Sliding component and method for producing the same

Patent metadata

Field	Value
Publication number	US-10436192-B2
Application number	US-201515560222-A
Country	US
Kind code	B2
Filing date	Apr 15, 2015
Priority date	Apr 15, 2015
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

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.

First claim

The invention claimed is:

1. A method for producing a sliding component, comprising the steps of:
preparing a base member made of steel or cast iron and having a recessed portion formed therein, and a sliding member made of copper alloy including hard particles; and
joining the base member and the sliding member,
the step of joining the base member and the sliding member including steps of
increasing temperatures of the base member and the sliding member by relatively rotating the sliding member with respect to the base member while relatively pressing the sliding member against the base member with at least a part of the sliding member being received in the recessed portion, and
stopping the relative rotation of the sliding member with respect to the base member and cooling the base member and the sliding member with the members being pressed against each other.

2. The method for producing a sliding component according to claim 1 , wherein
the base member includes
a recessed portion bottom surface defining the recessed portion, and
a recessed portion side surface defining the recessed portion and extending in a direction intersecting the recessed portion bottom surface, and

in the step of increasing the temperatures of the base member and the sliding member, the sliding member is relatively rotated while being relatively pressed against the recessed portion bottom surface of the base member.

3. The method for producing a sliding component according to claim 2 , wherein in the step of increasing the temperatures of the base member and the sliding member, the sliding member is deformed to contact the recessed portion side surface.

4. The method for producing a sliding component according to claim 2 , further comprising the step of, in a state where the base member and the sliding member are joined, machining the base member to remove the recessed portion side surface.

5. The method for producing a sliding component according to claim 1 , wherein in the step of increasing the temperatures of the base member and the sliding member, the sliding member is rotated while the base member is fixed.

6. The method for producing a sliding component according to claim 1 further comprising the step of, in a state where the base member and the sliding member are joined, removing a flash formed due to deformation of the sliding member in the step of increasing the temperatures of the base member and the sliding member.

Assignees

• Komatsu Mfg Co Ltd

Inventors

• Matsuyama Toshikazu
• Amano Masaharu
• Shibata Yoshitaka

Classifications

• F16C33/124

  Details of overlays · CPC title

• B23K2103/22

  Ferrous alloys and copper or alloys thereof · CPC title

• B32B15/013 Primary

  one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium · CPC title

• F01B31/28

  Cylinders or cylinder covers · CPC title

• F16C33/14 Primary

  Special methods of manufacture; Running-in · CPC title