Toyofumi Hasegawa | Researchain

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Archive | 1980

Warm forging method for cup-shaped pieces

Masatoshi Nishizawa; Toshihiro Minami; Takeshi Nakahara; Toyofumi Hasegawa

Archive | 1994

SHAFT PARTS FOR MACHINE STRUCTURAL USE EXCELLENT IN TORSIONAL FATIGUE STRENGTH

Toyofumi Hasegawa; Toshio Kawasaki; Toshiki Suwa; 稔夫川崎; 敏樹諏訪; 豊文長谷川

Archive | 1996

Outer ring for high strength uniform coupling and its manufacture

Tatsuhiro Gotou; Toyofumi Hasegawa; Toshio Kawasaki; Toshiki Suwa; Hideo Takeshita; Akira Wakita; Kazuhiko Yoshida; 和彦吉田; 稔夫川崎; 竜宏後藤; 秀男竹下; 明脇田; 敏樹諏訪; 豊文長谷川

Archive | 2001

WIRE OR ROD STEEL SUPPRESSED ARISING OF DEFORMATION RESISTANCE AT ROOM TEMPERATURE AND IN AREA OF WORKING HEAT GENERATION

Toyofumi Hasegawa; Hiroshi Momozaki; Masato Shikaiso; 豊文長谷川; 正人鹿礒

Archive | 1998

LOW CARBON FREE CUTTING STEEL EXCELLENT IN CHIP TREATABILITY, AND ITS PRODUCTION

Toyofumi Hasegawa; Masami Somekawa; 雅実染川; 豊文長谷川

Archive | 1992

Parts for machine structure excellent in fatigue resistance, particularly in face fatigue strength and its production

Toyofumi Hasegawa; Takehiko Kato; Masayoshi Ogura; Shunzo Umegaki; Yoichi Watanabe; 猛彦加藤; 真義小倉; 俊造梅垣; 陽一渡辺; 豊文長谷川

Archive | 1990

High strength steel bolts

Sadayoshi Furusawa; Toyofumi Hasegawa; Takeshi Nakahara; Takehiko Kato

Archive | 1997

Steel for non-heattreated bolt

Goro Anami; Toyofumi Hasegawa; 豊文長谷川; 吾郎阿南

Archive | 1993

Manufacture of parts for machine structure use

Satoshi Abe; Toyofumi Hasegawa; Takashi Matsumoto; Yoshitake Matsushima; Morifumi Nakamura; Masayoshi Ogura; Yoichi Watanabe; 守文中村; 安部聡; 真義小倉; 義武松島; 隆志松本; 陽一渡辺; 豊文長谷川

Archive | 1995