公开(公告)号：JP2000017418A

公开(公告)日：2000-01-18

申请号：JP18243298

申请日：1998-06-29

Applicant: TOSHIBA CORP

Inventor： ITO MASAYUKI ,  WADA KUNIHIKO ,  MAKINO YOSHINOBU ,  KATAOKA MASAKI ,  SATO MAMORU

IPC: F16C33/12 ,  C23C4/02 ,  C23C4/08 ,  C23C4/18 ,  C23C10/28

Abstract: PROBLEM TO BE SOLVED: To obtain a wear resistant coating layer free from segregation and good in adhesion without requiring working for thinning by subjecting a white metal layer with specified thickness and porosity coated on the bearing face of a bearing base material by a thermal spraying method to diffusion adhesion heating treatment at the temperature equal to or below the m.p. thereof. SOLUTION: The bearing face of a bearing base material 1 is roughened to 5 to 50 μm Ra or 30 to 500 μm Rmax, preferably by blasting treatment and is thereafter thermal-sprayed with white metal powder of 10 to 200 μm grain size at a high speed of 350 to 1500 m/sec by a high speed flame spraying or the like. In this way, the bearing face is densely coated with a white metal layer 2 to 1 to 30 mm thickness and

公开(公告)号：JP2001159425A

公开(公告)日：2001-06-12

申请号：JP34235599

申请日：1999-12-01

Applicant: TOSHIBA CORP

Inventor： ITO MASAYUKI ,  WADA KUNIHIKO ,  SENDA ITARU ,  KATAOKA MASAKI ,  SATO MAMORU

IPC: B23K35/28 ,  C22C12/00 ,  C22C13/00 ,  C22C13/02 ,  F16C33/12 ,  F16C33/14

Abstract: PROBLEM TO BE SOLVED: To eliminate machining for reduction in thickness, a degreasing work using an organic solvent and a plating work as a substrate treatment, to prevent segregation of white metal layers and to improve adhesion to a beating base material. SOLUTION: This manufacturing method for a bearing component, having a wear-resistant coating layer composed of the white metal layers on the beating base material comprises the steps of overlaying the white metal layer having a thickenss of 0.2 to 2.0 mm on the beating surface of the beating base material by TIG welding; closely coating the overlaid white metal layer the white metal layer having a thickness of 1.0 to 30.0 mm and a porosity of 20% or less by thermal spraying and subjecting the bearing base material formed with the white metal layers to a diffusion adhesive heat treatment, carried out by heating in a heating furnace at a temperature equal to or lower than the melting point of white metal.

公开(公告)号：JP2000234161A

公开(公告)日：2000-08-29

申请号：JP3245699

申请日：1999-02-10

Applicant: TOSHIBA CORP

Inventor： WADA KUNIHIKO ,  ITO MASAYUKI ,  MAKINO YOSHINOBU ,  KATAOKA MASAKI ,  SATO MAMORU

IPC: F16C33/12 ,  C23C4/02 ,  F16C33/14

Abstract: PROBLEM TO BE SOLVED: To provide bearing parts having a long service life and high reliability by providing the surface of a bearing base material with an intermediate layer of metal and securing mechanical and chemical adhesion between the white metal and the base material, to provide a method for producing the same and to provide a method for repairing the same. SOLUTION: In bearing parts having a wear resistant coating layer composed of white metal 3 applied to a bearing base material 1 by a thermal spraying method, the layer 2 of a metallic element or an alloy having