Application for machining shaft sleeve by using high-strength low-expansion zinc-base abrasion-resistant alloy

Abstract

The invention discloses application for machining a shaft sleeve by using high-strength low-expansion zinc-base abrasion-resistant alloy. Raw materials for machining the shaft sleeve comprise by weight: 55-65% of zinc, 20-30% of aluminum, 10-15% of intermediate alloy aluminum and 1-2% of cobalt aluminum. A method for machining the shaft sleeve comprises the following steps of: melting the raw materials, conducting casting molding through a die, and machining to obtain the high-strength low-expansion zinc-base abrasion-resistant alloy shaft sleeve. The application for machining the shaft sleeve by using the high-strength low-expansion zinc-base abrasion-resistant alloy changes production materials of the traditional shaft sleeve, reduces proportion of the traditional production material to be 4.8, is better than bronze in wear-resisting property, tensile strength and compression strength, is small in starting resistance, not apt to abrade and drop scrapes and good in oil soaking performance of the materials, and can form a protective oil film on a work face. The application enables the shaft sleeve to be reliable in work, good in stability and high in accuracy, and the high-strength low-expansion zinc-base abrasion-resistant alloy is the preferential material for machining the shaft sleeve at present.

Description

technical field [0001] The invention relates to the technical field of application of metal materials, in particular to the application of a high-strength, toughness and low-expansion zinc-based wear-resistant alloy as a shaft sleeve. Background technique [0002] The shaft sleeve is an important part of mechanical transmission, and it is the load transmitted from the supporting shaft and the load-bearing shaft. The shaft sleeve can be made of a single anti-friction material, but the anti-friction material is expensive and uneconomical, and practice has proved that its rigidity is poor. The working performance is not good, so the material of the shaft sleeve must not only have wear resistance and thermal conductivity, but also have a certain rigidity. At present, there are mainly nodular cast iron, bronze and non-metallic materials to make shaft sleeves, but they all have disadvantages to varying degrees. The high-strength, toughness and low-expansion zinc-based wear-resista...

AI Technical Summary

Problems solved by technology

[0002] The shaft sleeve is an important part of mechanical transmission, and it is the load transmitted from the supporting shaft and the load-bearing shaft. The shaft sleeve can be made of a single anti-friction material, but the anti-friction material is expensive and uneconomical, and practice has proved that its rigidity is poor. The working performance is not good, so the material of the bushing should not only have wear resistance and thermal conductivity, but also have a certain rigidity