公开(公告)号：EP2601321B1

公开(公告)日：2017-11-29

申请号：EP11760871.1

申请日：2011-08-04

申请人： Sintokogio, Ltd.

发明人： KOBAYASHI, Yuji ,  TSUJI, Toshiya

IPC分类号： C21D7/06 ,  C23C8/80 ,  C21D1/06 ,  C23C8/22 ,  C21D11/00

CPC分类号： B24C1/10 ,  C21D7/06 ,  C21D11/00 ,  C23C8/80

公开(公告)号：EP2601320A1

公开(公告)日：2013-06-12

申请号：EP11760870.3

申请日：2011-08-04

申请人： Sintokogio, Ltd.

发明人： KOBAYASHI, Yuji ,  TSUJI, Toshiya

IPC分类号： C21D7/06 ,  C23C8/22

CPC分类号： C21D7/06 ,  C21D2211/001

摘要： The present invention is to provide a method for shot peening for producing a compressive residual stress that exceeds 60% of the yield strength at 0.2% offset without using stress shot peening. Shot media are peened onto a processed steel that has an amount of retained austenite in a range between 5 to 30%, and any change in the amount of retained austenite is controlled to be in a range of 2 to 30% before and after shot peening to produce the compressive residual stress in the processed steel.

摘要翻译： 本发明提供一种喷丸硬化方法，用于在不使用应力喷丸硬化的情况下产生超过60％屈服强度0.2％偏移的压缩残余应力。 将喷丸介质喷丸在残留奥氏体量为5-30％的加工钢上，并且在喷丸硬化前后将残余奥氏体量的变化控制在2-30％范围内 在加工后的钢中产生压缩残余应力。

公开(公告)号：EP4427881A1

公开(公告)日：2024-09-11

申请号：EP24160452.9

申请日：2024-02-29

申请人： Sintokogio, Ltd.

发明人： NISHIJIMA, Hitoshi ,  HIRANO, Masao ,  TSUJI, Toshiya

IPC分类号： B24B31/00 ,  B22F10/66 ,  B24B31/02 ,  B24B31/06 ,  B24B31/14 ,  B24B39/00 ,  B24B39/04 ,  B24C1/08 ,  B33Y40/20 ,  B22F3/24

CPC分类号： B24B31/02 ,  B24B31/14 ,  B24B31/00 ,  B24B31/06 ,  B24C1/08 ,  B24B39/003 ,  B24B39/045 ,  B33Y40/20 ,  B22F2003/24720130101 ,  B22F10/66 ,  B24C1/10

摘要： A processing method for an additively manufactured article, the processing method including: accommodating an additively manufactured article containing metal and a medium made of metal in a barrel polishing device; and reducing a roughness of a surface of the additively manufactured article and applying a residual stress to the additively manufactured article by stirring the additively manufactured article and the medium, in which a surface of the medium includes a curved surface.

公开(公告)号：EP4049791A1

公开(公告)日：2022-08-31

申请号：EP22158196.0

申请日：2022-02-23

申请人： Sintokogio, Ltd.

发明人： TSUJI, Toshiya ,  SHIBUYA, Norihito ,  OKADA, Akira ,  SHINONAGA, Togo ,  WATANABE, Taisei ,  KOBAYASHI, Hiroya

IPC分类号： B24C1/06 ,  B23K26/354 ,  B33Y40/20 ,  B22F10/64 ,  B22F10/66 ,  B23K26/00 ,  B24C9/00 ,  B24C11/00

摘要： A method for surface treatment includes performing blasting (S10) on a surface of a workpiece, and irradiating (S20) the blasted surface of the workpiece with electron beam.

公开(公告)号：EP2601320B1

公开(公告)日：2018-01-17

申请号：EP11760870.3

申请日：2011-08-04

申请人： Sintokogio, Ltd.

发明人： KOBAYASHI, Yuji ,  TSUJI, Toshiya

IPC分类号： C21D7/06 ,  C23C8/22

CPC分类号： C21D7/06 ,  C21D2211/001

摘要： The present invention is to provide a method for shot peening for producing a compressive residual stress that exceeds 60% of the yield strength at 0.2% offset without using stress shot peening. Shot media are peened onto a processed steel that has an amount of retained austenite in a range between 5 to 30%, and any change in the amount of retained austenite is controlled to be in a range of 2 to 30% before and after shot peening to produce the compressive residual stress in the processed steel.

公开(公告)号：EP2601321A1

公开(公告)日：2013-06-12

申请号：EP11760871.1

申请日：2011-08-04

申请人： Sintokogio, Ltd.

发明人： KOBAYASHI, Yuji ,  TSUJI, Toshiya

IPC分类号： C21D7/06 ,  C23C8/80 ,  C21D1/06 ,  C23C8/22 ,  C21D11/00

CPC分类号： B24C1/10 ,  C21D7/06 ,  C21D11/00 ,  C23C8/80

摘要： The present invention is to provide a method for shot peening for producing a high compressive residual stress in a gas carburized steel that has a soft layer. In this method, a depth where the maximum compressive residual stress is generated is estimated and the hardness on the surface or near the surface is not used. The depth where the maximum compressive residual stress is generated is estimated by multiplying the depth where the maximum stress is generated under contact stresses caused by the collision of shot media by the constant K. A processed steel that comprises a gas carburized steel and that has a hardness at that depth that exceeds 750HV is used. Shot media that have a hardness that is greater than that of the processed steels at that depth by 50HV or more are shot onto the processed steels to produce a high compressive residual stress in the processed steels.

摘要翻译： 本发明提供一种用于在具有软层的气体渗碳钢中产生高压缩残余应力的喷丸硬化方法。 在该方法中，估计产生最大压缩残余应力的深度，并且不使用表面或表面附近的硬度。 产生最大压缩残余应力的深度是通过将由喷射介质的碰撞引起的接触应力下产生的最大应力的深度乘以常数K来估计的。包括气体渗碳钢并且具有 使用该深度超过750HV的硬度。 具有比在该深度处的加工钢的硬度大50HV以上的硬度的喷丸介质被喷射到经处理的钢上，以在加工钢中产生高的压缩残余应力。