Ring for spinning machinery
AssigneeKanai Juyo Kogyo Co., Ltd.
InventorsAkira Maruta, Ryouichi Motoyama
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Abstract
A ring for spinning machinery is made of alloy steel containing Cr 0.9-26% as basic material. The basic material is cut in the desired ring shape, is subjected to gas carburizing, quenching, subzero treatment and tempering and is finally subjected to a grinding. This ring has a surface layer in which carbide occupies 30-90% in the rate of area, with a surface roughness which has an average roughness of less than Ra 0.25 .mu.m at a center line.
Claims11
A ring for spinning machinery, said ring made of alloy steel containing 0.9-26% Cr, and said alloy steel of said ring having, at least at a surface for receiving a traveller sliding thereagainst, a surface layer in which swollen and diffused carbide occupies 30-90% of the area of said surface layer, with a surface roughness of less than Ra 0.25 micrometers in average roughness at a center line and a 1.5-5% carbon content.
Dependencies are inferred from the claim text.