TH42047B - Balls for constant velocity joints and methods of producing the same - Google Patents

Abstract

DC60 (01/07/52) This invention involves balls (16) for use in constant velocity joints and methods of Producing the same thing, balls (16) are produced by the hardening process of the quenching. Spherical housing with materials equivalent to standard high carbon chromium bearing steel. Japanese industry at 840 degrees Celsius to 900 degrees Celsius, followed by cooling the spherical housing in a manner That the area between the surface (30) and the first (32) at a depth of 0.1 mm from the surface (30) has a 10% to 25% austenite content by volume; Return of baking Return the spherical case at 150 ° C or higher; and the process of spraying or firing the case surface. The spherical shape is sprayed or fired in such a way that the area between the first (32) and the second (34) position at a depth of 0.2 mm from the surface (30) has a residual stress of -1000 mega. Pascal or higher:

Claims (1)

Disclaimers (all) that will not appear on the advertisement page: 1.Ball for use in constant velocity joints one position at a depth equal to 0.1 mm from the surface. And a second position at a depth equal to 0.2 mm from the surface, the ball is positioned Between outer rail parts And the inner rail part of the constant speed joint to transmit rotating power in The direction from the outer rail piece to the inner rail part or the reverse direction of that Where the ball is made by using steel to make bearings High carbon chromium as standard Japanese industry is raw material steel. Area between surfaces And the first position has a metal structure with 10% to 25% austenite content by volume.