公开(公告)号：EP2756971A8

公开(公告)日：2014-12-10

申请号：EP12831876.3

申请日：2012-04-23

申请人： Y-TEC CORPORATION ,  FUJI GIKEN CO., LTD.

发明人： EDAHIRO, Takeshi ,  AKUTAGAWA, Norifumi ,  YAMANE, Kyotaro ,  HIRAOKA, Teruhisa ,  YASUDA, Kazumi ,  ANDO, Shigeaki ,  HASHIMOTO, Masaru ,  ANDO, Yuichi ,  TSURUTA, Tetsuya

IPC分类号： B60G9/04 ,  C21D1/09 ,  C21D1/18 ,  C21D9/08 ,  F16F1/14

CPC分类号： B60G9/04 ,  B60G21/051 ,  B60G2206/20 ,  B60G2206/202 ,  C21D1/09 ,  C21D1/30 ,  C21D9/0068 ,  C21D9/08 ,  C21D2221/00

摘要： A tubular hollow member to which torsion about a center line is applied is characterized in performing a partial heat treatment on part of a peripheral wall of the hollow member to make the hardness of an outer portion of the peripheral wall greater than the hardness before heating and greater than the hardness of an inner portion of the peripheral wall, and reduce a residual stress of the inner portion of the peripheral wall.

公开(公告)号：EP2756971B1

公开(公告)日：2018-07-04

申请号：EP12831876.3

申请日：2012-04-23

申请人： Y-TEC CORPORATION ,  FUJI GIKEN CO., LTD.

发明人： EDAHIRO, Takeshi ,  AKUTAGAWA, Norifumi ,  YAMANE, Kyotaro ,  HIRAOKA, Teruhisa ,  YASUDA, Kazumi ,  ANDO, Shigeaki ,  HASHIMOTO, Masaru ,  ANDO, Yuichi ,  TSURUTA, Tetsuya

IPC分类号： B60G9/04 ,  C21D1/09 ,  C21D1/18 ,  C21D9/08 ,  F16F1/14

CPC分类号： B60G9/04 ,  B60G21/051 ,  B60G2206/20 ,  B60G2206/202 ,  C21D1/09 ,  C21D1/30 ,  C21D9/0068 ,  C21D9/08 ,  C21D2221/00

摘要： A tubular hollow member to which torsion about a center line is applied is characterized in performing a partial heat treatment on part of a peripheral wall of the hollow member to make the hardness of an outer portion of the peripheral wall greater than the hardness before heating and greater than the hardness of an inner portion of the peripheral wall, and reduce a residual stress of the inner portion of the peripheral wall.

公开(公告)号：EP2756971A1

公开(公告)日：2014-07-23

申请号：EP12831876.3

申请日：2012-04-23

申请人： Y-tec Corporation ,  Fuji Giken Co. Ltd.

发明人： EDAHIRO, Takeshi ,  AKUTAGAWA, Norifumi ,  YAMANE, Kyotaro ,  HIRAOKA, Teruhisa ,  YASUDA, Kazumi ,  ANDO, Shigeaki ,  HASHIMOTO, Masaru ,  ANDO, Yuichi ,  TSURUTA, Tetsuya

IPC分类号： B60G9/04 ,  C21D1/09 ,  C21D1/18 ,  C21D9/08 ,  F16F1/14

CPC分类号： B60G9/04 ,  B60G21/051 ,  B60G2206/20 ,  B60G2206/202 ,  C21D1/09 ,  C21D1/30 ,  C21D9/0068 ,  C21D9/08 ,  C21D2221/00

摘要： A tubular hollow member to which torsion about a center line is applied is characterized in performing a partial heat treatment on part of a peripheral wall of the hollow member to make the hardness of an outer portion of the peripheral wall greater than the hardness before heating and greater than the hardness of an inner portion of the peripheral wall, and reduce a residual stress of the inner portion of the peripheral wall.