Papers - MAENO Tomoyoshi
about 84-
Tomoyoshi Maeno, Ken-ichiro Mori, Tomoki Ogihara, Tomohiro Fujita
International Journal of Advanced Manufacturing Technology 97 ( 9-12 ) 3827–3837 2018.6 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Springer Joint Work
To produce ultra-high-strength steel parts for improving fuel consumption and collision safety of automobiles, a compact hot-stamping process having resistance heating was developed. In this process, a blanking operation was introduced immediately after heating to deal with non-rectangular blanks in resistance heating. By blanking, not only were the blank shapes optimised for stamping but the formability was also improved by removing both non-heating edges in contact with the electrode. A rectangular quenchable steel sheet was resistance-heated; the sheet was immediately blanked into the desired shape, and the blank was hot-stamped. In addition, reinforcements used for a body-in-white were hot-stamped using the proposed process to examine the applicability. The reduction in thickness of the hot-stamped reinforcement using a hot-blanked sheet was reduced compared with that using a rectangular blank. The formability was improved by blanking immediately after heating. Moreover, ultrasonic cleaning with diluted hydrochloric acid removed the thin oxide scale caused by resistance heating, and the spot-resistance weldability and electrodeposition paintability were improved. Blanking immediately after heating and ultrasonic cleaning are useful for practical hot-stamping processes using resistance heating.
Other Link： https://link.springer.com/article/10.1007/s00170-018-2232-2
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Use of liquid lubricant for backward extrusion of cup with internal splines using pulsating motion
T. Maeno, K. Mori, Y. Ichikawa, M. Sugawara
Journal of Materials Processing Technology 244 273 - 281 2017.6 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Joint Work
Other Link： http://www.sciencedirect.com/science/article/pii/S0924013617300456
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Hot stamping of high-strength aluminium alloy aircraft parts using quick heating
Tomoyoshi Maeno, Ken-ichiroMori, Ryosuke Yachi
CIRP Annals 66 ( 1 ) 269 - 272 2017.4 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Joint Work
To improve the formability and productivity in conventional cold stamping of high-strength aluminium aircraft parts, a hot stamping process of heat-treatable aluminium alloy sheets using quick heating below the solution treatment temperature was developed. Quick heating just before forming has the function of producing sufficient strength increase in subsequent artificial ageing. This leads to the elimination of solution treatment and sizing processes for cold stamping. The effect of heating conditions was evaluated in hot hat-bending of A2024-T4 aluminium alloy sheets. In addition, an aluminium alloy aircraft part having high strength and dimensional accuracy was successfully produced by the present process.
Other Link： https://www.sciencedirect.com/science/article/pii/S0007850617301178
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Hot local compression and die quench ausforming of quenchable steel sheet
MAENO Tomoyoshi, IKEDA Yuto, HANADA Akihiro, MORI Ken-ichiro
Materials Research Proceedings 44 32 - 40 2024.9 [Reviewed]
Authorship：Lead author, Corresponding author Language：English Publishing type：Research paper (international conference proceedings) Single Work
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Effect of ductile cast iron tool with grooved polishing and die coatings on friction behaviour in flat strip drawing of A7075-T6 alloy strip with quick heating
HARADA Sohdai, MAENO Tomoyoshi, NOMURA Atsuya, HIROSAWA Shoichi, YABUKI Yuji, SUZUKI Yasushi
Materials Research Proceedings 44 456 - 464 2024.9 [Reviewed]
Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings) Single Work
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Improvement of formability of silicon-containing recycled wrought aluminum alloy by hot stamping after rapid heating
KAWANA Ryohei, HIROSAWA Shoichi, OOTAKI Mitsuhiro, MAENO Tomoyoshi, SUZUKI Yasushi, YABUKI Yuuji
Materials Research Proceedings 44 368 - 373 2024.9 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Single Work
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Concurrent Improvement of strength, formability and SCC resistance of Al-Zn-Mg-Cu alloy by hot stamping after rapid heating and re-aging on paint baking treatment
HIROSAWA Shoichi, KIM Junmo, MAENO Tomoyoshi, SUZUKI Yasushi, YABUKI Yuuji
Materials Research Proceedings 44 227 - 232 2024.9 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Single Work
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Enhancement of shape accuracy and die quenchability of ultra-high strength steel hollow products in hot stamping of tubes using eco-friendly fiber-reinforced ice mandrel
Ali Talebi-Anaraki, Tomoyoshi Maeno, Yuta Matsubara, Ryohei Ikeda & Ken-ichiro Mori
The International Journal of Advanced Manufacturing Technology 126 4369 - 4384 2023.4 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Prevention of peeling of Al-Si coated layer in hot stamping using corner thickening by planar compression
T Maeno, Y Ohtsuka, A Talebi-Anaraki and R Watanabe
IOP Conference Series: Materials Science and Engineering 1270 012032 2022.12 [Reviewed]
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal) Single Work
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Integration of Hot Tube Gas Forming and Die Quenching of Ultra-High Strength Steel Hollow Parts Using Low Pressure Sealed-Air
Ali Talebi-Anaraki, Tomoyoshi Maeno, Yuta Matsubara, Ryohei Ikeda, Ken-ichiro Mori
Materials 15 ( 4 ) 1322 2022.2 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：mdpi Joint Work
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Corner Strengthening by Local Thickening and Ausforming Using Planar Compression in Hot Stamping of Ultra-High Strength Steel Parts
Maeno Tomoyoshi, Mori Ken-ichiro, Homma Hiroki, Talebi-Anaraki Ali, Ikeda Ryohei
METALS 11 ( 12 ) 1977 2021.12 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：mdpi Joint Work
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Quenchability improvement and control simplification by ice mandrel in hot stamping of ultra-high strength steel hollow parts
Ali Talebi-Anaraki, Tomoyoshi Maeno, Ryohei Ikeda, Kazui Morishita, Ken-ichiro Mori
Journal of Manufacturing Processes 64 916 - 927 2021.4 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher： Elsevier Joint Work
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Improvement of burnished area in punching of stainless steel thick plate by means of pulsating motion
Tomoyoshi Maeno, Minoru Sugawara, Takumi Saito, Ayato Terada, Ken-Ichiro Mori
Procedia Manufacturing 50 203 - 209 2020.9 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Automatic re-lubrication by pulsating motion with punch having dimple bottom in backward extrusion of cylindrical cup
Tomoyoshi Maeno, Hiroki Homma, Ryohei Ikeda, Ken-ichiro Mori
Procedia Manufacturing 50 231 - 235 2020.9 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Minimisation of Heating Time for Full Hardening in Hot Stamping Using Direct Resistance Heating
Tomoyoshi Maeno, Ken-ichiro Mori, Masato Sakagami, Yoshitaka Nakao, Ali Talebi-Anaraki
Journal of Manufacturing and Materials Processing 4 ( 3 ) 2020.8 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Hot Gas Forming of Aluminum Alloy Tubes Using Flame Heating
Ali Talebi-Anaraki, Mehdi Chougan, Mohsen Loh-Mousavi, Tomoyoshi Maeno
Journal of Manufacturing and Materials Processing 4 ( 2 ) 2020.6 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Delayed cracking in hot stamping with hot trimming for ultra-high strength steel components
Yuki Nakagawa, Ken-ichiro Mori, Tomoyoshi Maeno, Ryo Umemiya
The International Journal of Advanced Manufacturing Technology 105 5081 - 5090 2019.11 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Improvement of sheet metal formability by local work-hardening with punch indentation
Yohei Abe, Ken‑ichiro Mori, Tomoyoshi Maeno, Sho Ishihara, Yuki Kato
Production Engineering 13 589 - 597 2019.6 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Springer Joint Work
Other Link： https://link.springer.com/article/10.1007/s11740-019-00910-6#citeas
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Tomoyoshi Maenoa, Ken-ichiro Mori, Tomoki Ogihara, TomohiroFujita
Procedia Manufacturing Vol.29 225 - 231 2019.4 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Science Direct Joint Work
Other Link： https://doi.org/10.1016/j.promfg.2019.02.130
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Joining of Bar and Nut to Die-Quenched Steel Sheet by Punching
SUZUKI Yasutaka, MORI Ken-ichiro, MAENO Tomoyoshi, NAKAMURA Mitsuru, ABE Yohei
Journal of the Japan Society for Technology of Plasticity 60 ( 707 ) 335 - 339 2019
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Technology of Plasticity Joint Work
<p>A mechanical joining process of a bar and nut to a hard hot-stamped steel sheet was developed, because the resistance projection welding generally used for joining of bolts and nuts to hot-stamped sheets has low joinability. In this process, a slightly smaller hole than a bar and nut was made in the sheet with the bar and nut having a small round or chamfer at the bottom corner, and then the bar and nut were inserted into the hole. The punched hole was ironed with the bar and nut during the insertion, and thus the joint strength became high. No pre-punching is required for the sheet, whereas higher strength than that for the sheet is necessary for the bar and nut. For the bar and nut having a radius of 1.0 mm at the bottom corner, the ironed surface was the largest, and thus the maximum joint strength was obtained.</p>
Other Link： https://ci.nii.ac.jp/naid/130007772376
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Yasutaka Suzuki, Ken-ichiro Mori, Tomoyoshi Maeno, Kazuki Sakakibara, Yohei Abe
Procedia Manufacturing 15 1119 - 1126 2018.8 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Elsevier Joint Work
The formability in hot stamping was improved by partial cooling of a heated sheet during the transfer from a furnace to dies. Using the transfer device having grips on the heated sheet, the temperature of the portions undergoing large deformation during forming is decreased to increase the flow stress. The cooling pressure and the contacting width in transfer device were changed to control the temperature distribution in the sheet. In W-bending, a temperature difference of 250 °C and a flow stress difference of 300 MPa were obtained, and the depth of the W-bent sheet was increased by 26.1%.
Other Link： https://www.sciencedirect.com/science/article/pii/S2351978918310758
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Reduction in holding time at bottom dead centre in hot stamping by water and die quenching
Yuki Nakagawa, Ken-ichiro Mori, Tomoyoshi Maeno, Yoshitaka Nakao
Procedia Manufacturing 15 1111 - 1118 2018.8 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Elsevier Joint Work
A water and die quenching process with submerged tools was developed to improve the productivity of hot stamping. Although heated steel sheets are cooled only by the tools in the conventional hot stamping operation, the bent sheets are cooled by water around tools in the water and die quenching process, and thus the holding time at the bottom dead centre is reduced. The sheets were bent into a hat shape to examine the quenchability and deformation behaviour. For 1.6 mm in thickness, the holding times for sufficient hardening and the prevention of springback were 5 s and 20 s with and without water, respectively. Furthermore, the holding time was reduced by bottoming due to the increase in heat transfer coefficient.
Other Link： https://www.sciencedirect.com/science/article/pii/S235197891831076X
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Improvement of product strength of bonded magnets by extrusion with counter pressure
Tomoyoshi Maeno, Toshiya Taniguchi, Ken-ichiroMori
Procedia Manufacturing 15 557 - 563 2018.8 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Elsevier Joint Work
A forming process composed of pre-compaction and extrusion with counter pressure was proposed to improve the strength of bond magnets. The pores of the compact reduced by the flow and breaking of the powder particle during the extrusion, hence the density and strength of the products were improved. Nd-Fe-B magnetic powder was formed into a ring magnet by conventional compaction and the proposed process. The density of the magnet was improved to be 3% compared with that of compacted ones. The hardness of the magnet expressing the bonding strength of powder particles was improved. The radial crushing strength was higher than 60% from the result of the compacted magnet.
Other Link： https://www.sciencedirect.com/science/article/pii/S2351978918309739
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Prevention of seizure in ejection of compact by control of internal diameter of container
Tomoyoshi Maeno, Katsuya Hirayama, Ken-ichiro Mori, Hiroki Homma
Procedia Manufacturing 15 550 - 556 2018.8 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Elsevier Joint Work
To decrease the ejection force and to prevent the seizure during ejection in compaction of iron powder without lubricant, a compaction process using control of an internal diameter of a die using a shrinkage ring is developed. The internal diameter before the compaction is decreased by inserting the container into the shrinkage ring, and the internal diameter after the compaction is increased by releasing the shrinkage ring from the die. The friction during the ejection of the compact is decreased by the difference in elastic recovery between the die and compact.
Other Link： https://www.sciencedirect.com/science/article/pii/S2351978918309727
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Hot stamping of titanium alloy sheets using partial contact heating
Tomoyoshi Maeno, Masayuki Tomobe, Ken-ichiro Mori, Yuto Ikeda
Procedia Manufacturing 15 1149 - 1155 2018.8 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Elsevier Joint Work
Hot stamping of titanium alloy sheets using partial contact heating by contact heating was developed, and cylindrical deep drawing was performed. An outer portion of a 6Al-4V titanium alloy disc blank was heated with a hot stainless-steel ring by thermal conduction. The partially heated blank was drawn just after contact heating. The limiting drawing ratio in partial contact heating was higher than that of whole heating with a furnace. The concentration in deformation at a corner was prevented by the difference in flow stress between the outer portion and punch portion of the blank. A small distortion of the bottom of the cup was observed for the result of partial contact heating because of the non-uniform thermal shrinking.
Other Link： https://www.sciencedirect.com/science/article/pii/S2351978918310710
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MohsenLoh-Mousavi, Mehdi AhmadiRad, Tomoyoshi Maeno, Denis J. Politis, LiLiang Wang
Procedia Manufacturing 15 1047 - 1054 2018.8 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Elsevier Joint Work
A hot metal gas stamping process of an ultra-high strength steel tube has been investigated using a coupled thermal-electrical finite element analysis. In this process, a quenchable air filled steel tube was quickly heated by resistance heating and compressed by a V-shape die at room temperature. In addition, a hot tensile test of the heated tube was simulated by this method to verify the calculated results. It was shown that the results were in good agreement. It was found that the cooling rate in the die quenching of the air filled tube is increased by increasing the internal pressure.
Other Link： https://www.sciencedirect.com/science/article/pii/S2351978918310849
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Yuki Nakagawa, Ken-ichiro Mori, Tomoyoshi Maeno
International Journal of Advanced Manufacturing Technology 95 ( 1-4 ) 459 - 467 2018.3 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Springer Joint Work
The springback-free mechanism in hot stamping of ultra-high-strength steel parts was clarified by the mechanical, thermal and transformation viewpoints. In hot stamping, the effects of elastic recovery during unloading and thermal shrinkage on the springback are comparatively small, but the effect of the phase transformation is critical. Volume expansion occurs primarily upon the start of the martensitic transformation, and plastic deformation is induced by the volume expansion during holding at the bottom dead centre, causing the springback including the post-stamping deformation to disappear. It was observed from well-organised experiments that holding at the bottom dead centre until the martensite finish temperature prevents the springback, and the springback-free mechanism in hot stamping of ultra-high-strength steel parts was clarified from the observation. The springback behaviour in hot stamping of a thin steel sheet with 0.6 mm thickness was explained from the above mechanism, and the deformation behaviour and quenchability for the thin sheet were examined. A sufficient holding time at the bottom dead centre was more closely associated with the prevention of springback rather than sufficient hardening. Additionally, local thinning around the bottom corner of a bent thin sheet was prevented by optimising the transfer time from the furnace.
Other Link： https://link.springer.com/article/10.1007%2Fs00170-017-1203-3#citeas
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NAKAGAWA Yuki, MORI Ken-ichiro, MAENO Tomoyoshi, UMEMIYA Ryo
Journal of the Japan Society for Technology of Plasticity 59 ( 694 ) 221 - 227 2018
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Technology of Plasticity Joint Work
<p>The effects of hot trimming conditions on the sheared-edge quality and mechanical properties in hot stamping of ultra-high strength steel parts were examined. In hot stamping, the temperature of the parts rapidly drops during stamping, and the subsequent trimming operation is greatly influenced by the temperature. The sheared-edge quality was high above the temperature at which the martensitic transformation starts for a comparatively small clearance. The trimming temperature had a great influence on the occurrence of delayed fracture, whereas the clearance had no influence. In hot trimming, delayed fracture was prevented by decreasing the tensile residual stress and hardness near the sheared edge. The static and fatigue strengths of the parts are reduced by delayed cracks and hydrogen embrittlement, whereas the fatigue limit is unaffected. In hot trimming of thin sheets, delayed fracture tends to occur as a result of a large temperature drop.</p>
Other Link： https://ci.nii.ac.jp/naid/130007521571
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超高強度鋼部材のホットスタンピングにおける切口面性状および機械的特性に及ぼすホットトリミング条件の影響
中川佑貴，森謙一郎，前野智美，梅宮涼
塑性と加工 59 ( 694 ) 221 - 228 2018
Language：Japanese Publishing type：Research paper (scientific journal) Joint Work
中川佑貴，森謙一郎，前野智美，梅宮涼，超高強度鋼部材のホットスタンピングにおける切口面性状および機械的特性に及ぼすホットトリミング条件の影響，塑性と加工, Vol.59, No. 694 (2018), 221-228.
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Yuki Nakagawa, Ken-ichiro Mori, Yoshimitsu Murata, Tomoyoshi Maeno
Procedia Engineering 207 693 - 698 2017.9 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Joint Work
Tailored blanks having a thickness distribution without welds were produced by successive forging, and the length of the transient region in which the thickness gradually decreases was reduced by an infinitesimal feed. The effect of the infinitesimal feed on the reduction of the length of the transient region was evaluated. A tailored blank having a desired thickness was successive-forged, and was hot-stamped into a roof bow. The produced roof bow had sufficient hardness and high paintability.
Other Link： https://www.sciencedirect.com/science/article/pii/S1877705817358368
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2-stage progressive-die hot stamping of ultra-high strength steel parts using resistance heating
Ken-ichiro Mori, Tomoyoshi Maeno, Masato Sakagami, Masanori Ukai, Yuki Agatsuma
Procedia Engineering 207 681 - 686 2017.9 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Joint Work
A 2-stage progressive-die hot stamping process using partial resistance heating was developed to produce a small-sized ultra-high strength steel parts without additional heat treatments. In the 1st stage, a uncoiled long plate was successively heated by partial resistance heating, and then is simultaneously blanked and punched. The blank is inserted in the blanked plate to be conveyed. In the 2nd stage, the blank is bent and die-quenched. The resistance heating and die quenching operations are synchronised to double the productivity. An automobile seat belt buckle having 1500 MPa in tensile strength was successfully produced without springback.
Other Link： https://www.sciencedirect.com/science/article/pii/S1877705817358344
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3D printing of carbon fibre-reinforced plastic parts
Yuki Nakagawa, Ken-ichiro Mori, Tomoyoshi Maeno
The International Journal of Advanced Manufacturing Technology 91 ( 5-8 ) 2811 - 2817 2017.7 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Springer London Joint Work
Carbon fibre-reinforced plastic parts were manufactured by sandwiching carbon fibres between upper and lower ABS layers made by a 3D printer using fused deposition modelling. Carbon fibre-reinforced plastic tensile specimens were manufactured, and the strength of the specimens was measured. The strength is not increased only by sandwiching of the carbon fibres, and thermal bonding between the fibres and layers is required. The strength for the small diameter of the nozzle is higher than that for the large diameter. The thermal bonding operation is simplified by using a microwave oven.
Other Link： http://link.springer.com/article/10.1007/s00170-016-9891-7
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Hot stamping of ultra-high strength steel parts
K.Mori, P.F. Bariani, B.-A. Behrens, A. Brosius, S. Bruschi, T. Maeno, M. Merklein, J. Yanagimoto
CIRP Annals 66 ( 2 ) 755 - 777 2017.6 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Joint Work
The demand for new processes to produce high strength parts, under appropriate cost and productivity, has grown with weight reduction and crash safety improvements in automobile design. The hot stamping processes of quenchable steel sheets potentially offer not only small forming load and high formability, but also high strength and no springback by die quenching. This paper aims to provide an overview of the state-of-the-art in such hot stamping processes, including quenchability, formability, heating and cooling approaches and lubrication. The paper also includes a description of the mechanism of formability and quenching, tailoring, analysis of hot stamping processes and applicability.
Other Link： https://www.sciencedirect.com/science/article/pii/S0007850617301464
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Ken-ichiro Mori, Tomoyoshi Maeno, Makoto Tsuchiya, Tatsuhiro Nanya
The International Journal of Advanced Manufacturing Technology 90 ( 9-12 ) 3585 - 3594 2017.6 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Springer London Joint Work
Hot stamping operations of a quenchable steel sheet were included in progressive-die plate forging to produce a tailored high strength gear part without additional heat treatments. As process design for the inclusion, the former stages in the progressive-die operations for punching and trimming were cold stamping, and subsequently, resistance heating, blanking, forging and die quenching were performed. The plate was partially resistance-heated with a pair of electrodes to produce a tailored gear part having high strength teeth and a ductile remainder. The tooth portion was uniformly heated around 1050 °C in the transversal current direction, and a gear part having teeth having 520 HV2 in hardness was produced. The quality of the teeth was improved by hot semi-blanking with local compression and cold scrap removing. It is found that the combined process of plate forging and hot stamping is useful to produce ultra-high strength steel parts.
Other Link： http://link.springer.com/article/10.1007/s00170-016-9705-y
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Successive forging of tailored blank having thickness distribution for hot stamping
Liyana Tajul, Tomoyoshi Maeno,Takaya Kinoshita, Ken-ichiro Mori
International Journal of Advanced Manufacturing Technology 89 ( 9 ) 3731 - 3739 2017.4 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Springer London Joint Work
A successive forging process of tailored blanks having a thickness distribution supplied for hot stamping was developed. In this process, a blank having a uniform thickness was successively compressed with the upper and lower punches, simultaneously. Since local deformation was repeated in successive forging, the forging load is comparatively small, and tailored blanks without joining are produced similar to the tailor rolling process. The thickness was controlled only by the feed under a fixed stroke of the punch. As the feed decreases, the forging load decreases due to small contact area, and thus, the reduction in thickness of the blank becomes large for small elastic deformation of the press and tools. Tool marks appearing on the surface of the tailored blank were prevented by inserting concave and convex plates into a C-frame of a press. A tailored blank having two thicknesses was successively forged, and then hot-stamped into a roof rail.
Other Link： http://link.springer.com/article/10.1007/s00170-016-9356-z
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Tomoyoshi Maeno, Yuya Yamashita, Ken-Ichiro Mori
Key Engineering Materials 716 915 - 922 2016.9 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Trans Tech Publications Ltd. Joint Work
Other Link： https://www.scientific.net/KEM.716.915
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Prevention of local thinning and springback in hot stamping of thin sheets
Yuki Nakagawa, Ken-Ichiro Mori, Tomoyoshi Maeno
Key Engineering Materials 716 487 - 493 2016.9 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Trans Tech Publications Ltd. Joint Work
In hot stamping of thin quenchable steel sheet, local thinning, springback and hardness of stamped parts were investigated. The sheets having 0.6, 1.0 and 1.6 mm in thickness were heated at 900 °C by a furnace and hot-stamped into a hat shape. Local thinning around the bottom corner of the hat-shaped part for a thickness of 0.6 mm was considerably remarkable in comparison with those above 1.0 mm in thickness. Local thinning was relieved for a transfer time of 15 s from the furnace because of the uniformity of the temperature distribution. In addition, the springback was prevented above 5s.
Other Link： https://www.scientific.net/KEM.716.487
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Deep drawability and bendability in hot stamping of ultra-high strength steel parts
Ken-Ichiro Mori, Tomoyoshi Maeno, Yuzo Yanagita
Key Engineering Materials 716 262 - 269 2016.9 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Trans Tech Publications Ltd. Joint Work
The deep drawability and bendability in hot stamping of ultra-high strength steel parts were examined. Although the cold drawability is greatly influenced by the blank shape, the limiting drawing depths for the square and circular blanks were equal for hot stamping because of small flow stress. In hot hat-shaped bending using draw-and form-type tools, the effect of the blankholder force generated with the draw-type tools on the springback was small, and the seizure for the form-type tools was smaller than that of the draw-type tools. Since both edges in contact with the electrodes are not heated for resistance heating, cracks were caused at the edges for resistance heating in the transversal directions in hot stamping of an S-rail with form-type tools, and thus it is required to control deformation of the non-heating zones.
Other Link： https://www.scientific.net/KEM.716.262
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Incremental forging of long plates having inclined cross-section and local thickening
Liyana Tajul, Tomoyoshi Maeno, Ken-ichiro Mori
International Journal of Mechanical & Mechatronics Engineering 16 ( 3 ) 34 - 52 2016.6 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
Incremental forging processes of long plates having an inclined cross-section and local thickening were developed. A long plate was compressed with an inclined punch to produce long parts having an inclined cross-section. Since local deformation was repeated in incremental forging, the forging load is comparatively small and hence small mechanical presses conventionally used in the forming industry can be used. Although waving and depression of the plate were decreased by a tapper bottom inclined punch, the plate curvature was large. A grooved die was employed to eliminate the curvature of the forged plate having an inclined cross-section. Plates having local thickening were also produced by beading and compression. The plate was freely compressed by a punch to form a beaded portion at the center of the sheet. The beaded portion was then compressed to form a local thickening without changing the width of the plate. The thick part possesses higher strength as compared to the thin part due to work-hardening during compression.
Other Link： http://ijens.org/Vol_16_I_03/161903-4848-IJMME-IJENS.pdf
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Full hardening of products in hot stamping using rapid resistance heating
T. Maeno, K. Mori, M. Sakagami, Y. Nakao
Proceedings of 5th International Conference on Hot Sheet Metal Forming of High-performance Steel 323 - 330 2015.6 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Joint Work
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Hot semi-punching and cold scrap removing processes for hot stamping of ultra-high strength steel parts
K. Mori, T. Maeno, T. Suganami,
Manufacturing Review 2 11 2015.5 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：EDP Sciences Joint Work
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Improvements in productivity and formability by water and die quenching in hot stamping of ultra-high strength steel parts
T. Maeno, K. Mori, M. Fujimoto
CIRP Annals - Manufacturing Technology 64 ( 1 ) 281 - 284 2015.4 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：CIRP, The International Academy for Production Engineering Joint Work
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Local prevention of hardening for punching of hot-stamped parts
Ken Ichiro Mori, Tomoyoshi Maeno, Takuya Suganami
Key Engineering Materials 639 205 - 212 2015.3 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Trans Tech Publications Ltd Joint Work
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1-shot hot stamping of ultra-high strength steel parts consisting of resistance heating, forming, shearing and die quenching
K. Mori, T. Maeno, H. Yamada, H. Matsumoto
International Journal of Machine Tools and Manufacture 89 124–131 2015.2 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Ltd Joint Work
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Dieless forming of carbon fibre reinforced plastic parts using 3D printer
Ken Ichiro Mori, Tomoyoshi Maeno, Yuki Nakagawa
Procedia Engineering 81 1595 - 1600 2014.10 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Elsevier Ltd Joint Work
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Successive forging of long plate having inclined cross-section
Liyana Tajul, Tomoyoshi Maeno, Ken Ichiro Mori
Procedia Engineering 81 2361 - 2366 2014.10 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Elsevier Ltd Joint Work
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Prevention of seizure in inner spline backward extrusion by low-cycle oscillation using servo press
Tomoyoshi Maeno, Ken Ichiro Mori, Yuki Ichikawa, Minoru Sugawara
Procedia Engineering 81 1860 - 1865 2014.10 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Elsevier Ltd Joint Work
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Improvement of die filling by prevention of temperature drop in gas forming of aluminium alloy tube using air filled into sealed tube and resistance heating
Tomoyoshi Maeno, Ken Ichiro Mori, Chihiro Unou
Procedia Engineering 81 2237 - 2242 2014.10 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Elsevier Ltd Joint Work
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Hot semi-punching of quenchable steel sheet
Ken Ichiro Mori, Tomoyoshi Maeno, Takuya Suganami, Masato Sakagami
Procedia Engineering 81 1762 - 1767 2014.10 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Publisher：Elsevier Ltd Joint Work
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Forging of parts having strength distribution using tailor friction-welded billets composed of steel bars having different quenchabilities
T. Maeno, K. Mori, Y. Yanagiya, S. Nishino
Key Engineering Materials 622-623 186 - 193 2014.9 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Trans Tech Publications Ltd Joint Work
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Hot spline forming of ultra-high strength steel gear drum using resistance heating
Mori, T. Maeno, S. Nakamoto
Key Engineering Materials 622-623 201 - 206 2014.9 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Trans Tech Publications Ltd Joint Work
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Improvement in formability by control of temperature in hot stamping of ultra-high strength steel parts
Tomoyoshi Maeno, Ken Ichiro Mori, Takaaki Nagai
CIRP Annals - Manufacturing Technology 63 ( 1 ) 301 - 304 2014.8 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：CIRP, The International Academy for Production Engineering Joint Work
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Application of load pulsation using servo press to plate forging of stainless steel parts
T. Maeno, K. Mori, A. Hori
Journal of Materials Processing Technology 214 ( 7 ) 1379 - 1387 2014.7 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Ltd Joint Work
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Hot gas bulging of sealed aluminium alloy tube using resistance heating
T. Maeno, K. Mori, K. Fujimoto
Manufacturing Review 1 5 2014.5 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：EDP Sciences Joint Work
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Hot Semi-Punching and Local Prevention of Quenching in Punching of Hot-Stamped Parts
MORI Ken-ichiro, MAENO Tomoyoshi, SUGANAMI Takuya
Journal of the Japan Society for Technology of Plasticity 55 ( 636 ) 50 - 54 2014.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Technology of Plasticity Joint Work
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Gas forming of ultra-high strength steel hollow part using air filled into sealed tube and resistance heating
T. Maeno, K. Mori, K. Adachi
Journal of Materials Processing Technology 214 ( 1 ) 97–105 2014.1 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Ltd Joint Work
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Hot stamping of titanium alloy sheet using resistance heating
Z. Hamedon,K. Mori, T. Maeno, Y. Yamashita.
Vestnik of Nosov Magnitogorsk State Technical University 45 ( 5 ) 12 - 15 2013.5 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Magnitogorsk State Technical University Joint Work
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1 Shot Hot Stamping of Ultra-High Strength Steel Parts Consisting of Resistance Heating, Forming, Shearing and Die Quenching
MORI Ken-ichiro, YAMADA Hiroaki, MAENO Tomoyoshi, IEDA Kazunori
Journal of the Japan Society for Technology of Plasticity 54 ( 627 ) 343 - 347 2013.4 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Technology of Plasticity Joint Work
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Tailored die quenching of steel parts having strength distribution using bypass resistance heating in hot stamping
K. Mori, T. Maeno, K. Mongkolkaji
Journal of Materials Processing Technology 213 ( 3 ) 508 - 514 2013.3 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Ltd Joint Work
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Improvement in Formability of Steel Sheets by Preventing Decrease in Temperature of Flange Portion in Hot Stamping
MAENO Tomoyoshi, MORI Ken-ichiro, NAGAI Takaaki
Journal of the Japan Society for Technology of Plasticity 53 ( 622 ) 1013 - 1017 2012.11 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Technology of Plasticity Joint Work
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Gear extrusion using control of counter pressure genarated by frictional force of die land
Tomoyoshi Maeno, Ken Ichiro Mori, Katsuya Hirayama, Yusuke Hashimoto, Kozo Osakada
Steel research international SPL. ISSUE 511 - 514 2012.9 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Wiley-VCH Joint Work
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Hot bending of titanium alloy sheet using resistance heating
Tomoyoshi Maeno, Ken Ichiro Mori, Zamzuri Hamedon
Steel research international SPL. ISSUE 287 - 290 2012.9 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Wiley-VCH Joint Work
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Punching of small hole of die-quenched steel sheets using local resistance heating
Ken Ichiro Mori, Tomoyoshi Maeno, Yoshihiro Maruo
CIRP Annals - Manufacturing Technology 61 ( 1 ) 255 - 258 2012.4 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：CIRP, The International Academy for Production Engineering Joint Work
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Punching of Ultra-High Strength Steel Sheets Using Local Resistance Heating of Shearing Zone
K. Mori, T. Maeno, S. Fuzisaka
Journal of Materials Processing Technology 212 ( 2 ) 534 - 540 2012.2 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Ltd Joint Work
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Hot Metal Gas Forming Process for Aluminium Alloy Tube Using Sealing Pressure and Resistance Heating
T. Maeno, K. Mori, C. Unou
Journal of the Japan Society for Technology of Plasticity 53 ( 612 ) 54 - 58 2012.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Technology of Plasticity Joint Work
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Small Hole Punching Using Local Resistance Heating for Die-Quenched Steel Sheets
K. Mori, Y. Maruo, T. Maeno
Journal of the Japan Society for Technology of Plasticity 52 ( 609 ) 1114 - 1118 2011.10 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Technology of Plasticity Joint Work
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Influence of initial wall thickness of tube on formability in hot gas bulging of aluminium alloy tube using pressure of sealed air and resistance heating
T. Maeno, K. Mori, C. Unou
Steel research international ICTP2011 Special Edition 475 - 480 2011.9 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Wiley-VCH Joint Work
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Die Forging of Parts Having Strength Distribution Using Tailor Friction-Welded Billet
T. Maeno, K. Mori, Y. Yanagiya, Y. Matsui, M. Kudo, A. Kimura
Journal of the Japan Society for Technology of Plasticity 52 ( 608 ) 1022 - 1026 2011.9 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Technology of Plasticity Joint Work
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Manufacturing of Ultra-High Strength Steel Formed Products Having Strength Distribution by Stamping Using Bypass Resistance Heating
K. Mori, M. Kittikul, T. Maeno, M. Uchida, S.Kamizono, T. Hayashi, A. Noda
Journal of the Japan Society for Technology of Plasticity 52 ( 606 ) 801 - 805 2011.7 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Technology of Plasticity Joint Work
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Optimisation of Condition in Hot Gas Bulging of Aluminium Alloy Tube Using Resistance Heating Set into Dies
Tomoyoshi Maeno, Ken-ichiro Mori and Chihiro Unou
Key Engineering Materials 473 69 - 74 2011.4 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Trans Tech Publications Ltd Joint Work
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Reduction of Friction in Compression of Plates by Load Pulsation
T. Maeno, K.Osakada, K.Mori,
International Journal of Machine Tools & Manufacture 51 ( 7-8 ) 612 - 617 2011.4 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Ltd Joint Work
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Hot Spline Forming of Ultra High Strength Steel Gear Drum Using Resistance Heating
T. Maeno, K. Mori, Y. Fukui, K. Ueno, K. Saito, Y. Hokazono, Y. Anada
Journal of the Japan Society for Technology of Plasticity 52 ( 601 ) 277 - 281 2011.2 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Technology of Plasticity Joint Work
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Control of Slide Motion in Hot Die Forging of Aluminum Alloy Billets Using Servo Press
T. Maeno, H. Fujii, K. Mori, M. Sato
Journal of the Japan Society for Technology of Plasticity 51 ( 597 ) 958 - 962 2010.10 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Technology of Plasticity Joint Work
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Control of slide motion in hot impression die forging of aluminium alloy billets using servo press
T. Maeno, H. Fujii, K. Mori, M. Sato
Steel research international 81 ( 9 ) 354 - 357 2010.9
Language：English Publishing type：Research paper (scientific journal) Publisher：Wiley-VCH Joint Work
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Punching of Ultra High Strength Steel Sheets Using Local Resistance Heating
K. Mori, S. Fujisaka, M. Uchida, S. Kamizono, T. Maeno
Journal of the Japan Society for Technology of Plasticity 51 ( 588 ) 55 - 59 2010.1 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Technology of Plasticity Joint Work
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Reduction in Friction in Forging of Plates by Load Oscillation
T. Maeno, K. Osakada, K. Mori
Journal of the Japan Society for Technology of Plasticity 50 ( 585 ) 951 - 955 2009.10 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Technology of Plasticity Joint Work
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Hot Gas Bulging of Aluminum Alloy Tube by Resistance Heating in Forming Machine
T. Maeno, K. Mori, K. Fujimoto
Journal of the Japan Society for Technology of Plasticity 50 ( 580 ) 424 - 428 2009.5 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Technology of Plasticity Joint Work
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Development of the hot gas bulging process for aluminium alloy tube using resistance heating
Tomoyoshi Maeno, Kenichiro Mori, Kouji Fujimoto
Key Engineering Materials 410-411 315 - 323 2009.3 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Trans Tech Publications Ltd Joint Work
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3-D finite element simulation of pulsating free bulge hydroforming of tubes
M. LOH-MOUSAVI, M. BAKHSHI, K. MORI, T. MAENO, M. FARZIN AND S.J.HOSSEINIPOUR
Iranian Journal of Science & Technology, Transaction B, Engineering 32 ( B6 ) 611 - 618 2008.11 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Joint Work
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Improvement of hydroformability of tube by control of wrinkling
T. Maeno, K. Mori, K. Hayashi and M. Loh-Mousavi
Steel research international 79 ( 1 ) 265 - 271 2008.9 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Wiley-VCH Joint Work
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Improvement of Formability by Wrinkling Control in Hydroforming of Tubes
Journal of the Japan Society for Technology of Plasticity 49 ( 567 ) 341 - 345 2008.4 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Technology of Plasticity Joint Work
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Mechanism of improvement of formability in pulsating hydroforming of tubes
K. Mori, T. Maeno and S. Maki
International Journal of Machine Tools and Manufacture 47 ( 6 ) 978 - 984 2007.6 [Reviewed]
Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Ltd Joint Work
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Mechanism of Improvement of Formability in Pulsating Free Bulging Hydroforming of Tubes
Journal of the Japan Society for Technology of Plasticity 47 ( 548 ) 835 - 839 2006.9 [Reviewed]
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for Technology of Plasticity Joint Work
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Measurement of friction force in free bulging pulsating hydroforming of tubes
K. Mori, T. Maeno, M. Bakhshi-Jooybari and S. Maki
Advanced Technology of Plasticity 2005 2005 [Reviewed]
Language：English Publishing type：Research paper (international conference proceedings) Joint Work