公开(公告)号：US10071440B2

公开(公告)日：2018-09-11

申请号：US15329649

申请日：2014-08-29

申请人： KOMATSU LTD.

发明人： Yoshitaka Shibata ,  Atsushi Saitou ,  Masaharu Amano

IPC分类号： B23K20/00 ,  B23K20/12 ,  F04B1/22 ,  F04B27/08 ,  F03C1/06 ,  F04B1/12 ,  F04B53/14 ,  F03C1/28 ,  F01B31/26

CPC分类号： B23K20/12 ,  F01B31/26 ,  F03C1/06 ,  F03C1/0605 ,  F04B1/124 ,  F04B1/22 ,  F04B27/08 ,  F04B27/0886 ,  F04B53/14

摘要： A metal member producing device includes a spindle, a base portion, and a driving portion which drives at least one of the spindle and the base portion in an axial direction of the spindle. Of the spindle and the base portion, one includes a first holding portion for holding a first member. The other has disposed thereon a mold for holding a second member to oppose the first holding portion. The mold includes a bottom wall and a sidewall that extends from the bottom wall in a direction intersecting the bottom wall. The sidewall has a resistive wall formed thereon, the resistive wall being a wall surface inclined with respect to a plane parallel to the axial direction of the spindle so as to face the bottom wall side.

公开(公告)号：US10436192B2

公开(公告)日：2019-10-08

申请号：US15560222

申请日：2015-04-15

申请人： KOMATSU LTD.

发明人： Toshikazu Matsuyama ,  Masaharu Amano ,  Yoshitaka Shibata

IPC分类号： B23K20/12 ,  F04B53/16 ,  F16C33/14 ,  B32B5/16 ,  B32B15/01 ,  B32B15/18 ,  B32B15/20 ,  F01B31/28 ,  F16C33/12 ,  B23K103/22

摘要： A sliding component and its producing method are provided. The sliding component includes a base section made of steel or cast iron, and a sliding section having a sliding surface, made of copper alloy including hard particles, and joined to the base section. The hard particles in the sliding section are arranged such that those in a region including an outer periphery of the interface with the base section have their longitudinal directions coinciding with the directions along the outer periphery as compared to those in an inner peripheral side. This improves the durability of the sliding section in its region including the outer periphery of the interface with the base section.

公开(公告)号：US10384301B2

公开(公告)日：2019-08-20

申请号：US15023739

申请日：2013-10-16

申请人： KOMATSU LTD.

发明人： Yoshitaka Shibata ,  Masaharu Amano ,  Takuya Tsumura ,  Kazuhiro Nakata

IPC分类号： B23K20/12 ,  F04B1/12 ,  F03C1/28 ,  F04B27/08 ,  B32B7/02 ,  B32B15/01 ,  B23K101/00 ,  B23K103/04 ,  B23K103/12

摘要： A piston shoe as a sliding component includes a base section, which is made of steel, and a sliding section having a sliding surface, which is made of copper alloy and joined to the base section. The base section and the sliding section are joined, with a base section joint region being formed in the base section, the base section joint region including a base section joint surface that is a surface joined to the sliding section and having smaller grains than other regions in the base section.

公开(公告)号：US10906126B2

公开(公告)日：2021-02-02

申请号：US15560272

申请日：2015-04-15

申请人： KOMATSU LTD.

发明人： Toshikazu Matsuyama ,  Masaharu Amano ,  Yoshitaka Shibata

IPC分类号： B23K20/12 ,  B23K20/24 ,  B23K20/227 ,  B23K103/04 ,  B23K103/10 ,  B23K103/22 ,  B23K103/20

摘要： The method includes a step of preparing a first member made of a first metal and a second member made of a second metal having a smaller deformation resistance than the first metal, and a step of joining the first member and the second member. The step of joining includes a step of disposing the second member in a cavity of a mold, a step of heating the first member and the second member by relatively rotating the first member with respect to the second member, while pressing the first member against the second member, without changing a positional relationship, and a step of cooling the first member and the second member with the members being in contact with each other. In the step of disposing, the second member is disposed such that a second member contact surface is surrounded by the sidewall of the cavity.

公开(公告)号：US10583518B2

公开(公告)日：2020-03-10

申请号：US15560353

申请日：2015-04-15

申请人： KOMATSU LTD.

发明人： Toshikazu Matsuyama ,  Masaharu Amano ,  Yoshitaka Shibata

IPC分类号： B23K20/12 ,  B23K103/22

摘要： The method for producing a metal member includes a step of preparing a first member made of a first metal, a second member made of a second metal, and a third member made of a third metal, and a step of joining the first member and the second member via the third member. The step of joining includes a step of heating the first member, the second member, and the third member by stacking the first member, the third member, and the second member in this order and relatively rotating the first member about an axis of rotation, while pressing the first member against the third member, without changing a positional relationship, and a step of cooling the first member, the second member, and the third member heated, with the members being in the stacked state.

公开(公告)号：US10888951B2

公开(公告)日：2021-01-12

申请号：US15560171

申请日：2015-04-15

申请人： KOMATSU LTD.

发明人： Toshikazu Matsuyama ,  Masaharu Amano ,  Yoshitaka Shibata

IPC分类号： B23K20/12 ,  B23K20/24 ,  B23K20/227 ,  B23K103/20 ,  B23K103/22

摘要： The method for producing a metal member includes a step of preparing a first member made of a first metal and having a recessed portion formed therein, and a second member made of a second metal having a smaller deformation resistance than the first metal, and a step of joining the first member and the second member. The step of joining includes a step of increasing temperatures of the first member and the second member by relatively rotating the second member with respect to the first member while pressing the second member against the first member with at least a part of the second member being received in the recessed portion, and a step of stopping the relative rotation of the second member with respect to the first member and cooling the first member and the second member with the members being pressed against each other.

公开(公告)号：US11338385B2

公开(公告)日：2022-05-24

申请号：US15756002

申请日：2015-10-29

申请人： KOMATSU LTD.

发明人： Toshikazu Matsuyama ,  Masaharu Amano ,  Yoshitaka Shibata

IPC分类号： B23K20/00 ,  B23K20/12 ,  B23K33/00 ,  B23K20/227 ,  B23K20/24 ,  B23K103/22 ,  C21D9/50

摘要： A machine component includes a first region having a first linear expansion coefficient, and a second region having a second linear expansion coefficient greater than the first linear expansion coefficient and joined to the first region. A region including an outer periphery of an interface between the first region and the second region is inclined toward the second region side over the entire periphery. On a surface of the first region, a groove is formed to extend along the outer periphery of the interface.