Ring for spinning machinery
AssigneeKanai Juyo Kogyo Co., Ltd.
InventorShigeru Kibe
Life of this patent
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Abstract
A ring for use in spinning machinery such as ring spinning machines and twisting machines, which is usable at a high spindle revolutionary speeds of 20,000 r.p.m. The ring comprises a ring flange, a neck part, a collar and a trunk part. The trunk part has a ring fitting part and is provided, at the surface which contacts at least the ring traveller, with a composite plated layer of nickel and phosphorous alloy containing hard fine grains. The ring is further treated with heating and polishing processes to increase hardness and smoothness of the surface to thereby improve anti-wearing properties and heat-resistance properties.
Claims11
A ring for use in spinning machinery, comprising:
- an annular flange having an inner portion and an outer portion, said inner portion including an upper part, a lower part, and a central part between said upper and lower parts;
- wherein said annular flange is formed of a base material and a composite plated layer plated on said base material, said plated layer being formed of a nickel-phosphorus matrix material having hard fine particles of 0.2-3 .mu.m particle diameter co-separated therein;
- wherein some of said hard fine particles protrude slightly above the surface of said nickel-phosphorus matrix material such that a portion of an exposed surface of said plated layer consists of protruding hard fine particles;
- wherein a portion of the exposed surface of said plated layer consists of minute recesses from which hard fine particles have been exfoliated;
- and
- wherein said hard fine particles are dispersed in said matrix material more densely at said central part of said inner portion of said flange than at said upper and lower parts of said inner portion of said flange.
A ring as recited in claim 12, wherein
- a vertical distance along said central part of said inner portion of said annular flange is approximately 75% of the vertical distance along said inner portion of said annular flange.
Dependencies are inferred from the claim text.