Application of high-toughness low-expansion zinc-based wear-resisting alloy for production of bearing cage

Abstract

The invention discloses application of a high-toughness low-expansion zinc-based wear-resisting alloy for production of a bearing cage. The alloy comprises, by weight, 55-65% of zinc, 20-30% of aluminum, 10-15% of intermediate alloy aluminum and 1-2% of aluminum cobalt. A method for producing the bearing cage comprises that materials are smelted, cast and molded by a mold and subjected to finish machining, and then the high-toughness low-expansion zinc-based wear-resisting alloy bearing cage is produced. According to the application of the high-toughness low-expansion zinc-based wear-resisting alloy for the production of the bearing cage, production materials and production processes of traditional bearing cages are changed, the specific gravity of the bearing cage is reduced to 4.8, the wearing resistance and the strength of the bearing cage are better than those of lead bronze, the starting resistance is low, the bearing cage is not easy to wear, scraps are not easy to fall, the bearing cage are good in material oil immersion performance, and a layer of protective oil film can be formed on every working surface. According to the application, the alloy is low in starting resistance, free from scrap falling during operation, reliable in operation, good in stability and high in working precision, so that the alloy is the preferred application material for current processing of the bearing cage.

Description

technical field [0001] The invention relates to the technical field of metal material application, in particular to the application of a high-strength, toughness and low-expansion zinc-based wear-resistant alloy as a bearing retainer. Background technique [0002] Bearings are important mechanical transmission components, which support the shaft and bear the load from the shaft. The bearing is composed of outer ring, inner ring, balls and cage. The cage is a key component to maintain the relative position of the balls in the bearing. The traditional cage is formed by stamping a metal plate. Because the material is close to the inner and outer rings and the balls, it is easy to produce Affinity phenomenon, as well as the use of non-metallic materials to make retainers. Although these materials solve the problem of affinity, there are certain problems in their wear resistance, water resistance, and flame retardancy, and the processing performance and other indicators are also ...

AI Technical Summary

Problems solved by technology

The bearing is composed of outer ring, inner ring, balls and cage. The cage is a key component to maintain the relative position of the balls in the bearing. The traditional cage is formed by stamping a metal plate. Because the material is close to the inner and outer rings and the balls, it is easy to produce Affinity phenomenon, as well as the use of non-metallic materials to make retainers. Although these materials solve the problem of affinity, there are certain problems in their wear resistance, water resistance, and flame retardancy, and the processing performance and other indicators are also poor. not as good as steel

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