Preparation method for copper-based alloy material used for bearing

Abstract

The invention discloses a preparation method for a copper-based alloy material used for a bearing. The preparation method comprises the following steps: (1) preparation of raw materials consisting of brass powder, silicon carbide particles, graphite powder and carbon fiber; (2) with the brass powder as a matrix, adding the silicon carbide particles, graphite powder and carbon fiber and carrying out mixing under high-speed stirring so as to obtain a mixture; (3) subjecting the mixture to cold press molding; (4) packaging a molded material obtained after cold press molding by using copper sheet; (5) heating the packaged material to 200 to 250 DEG C so as to allow organic matters in the material to be totally volatilized; (6) subjecting the material in which the organic matters are volatilized to vacuum-pumping and then continuing to heat the material until the material is semi-solid; and (7) maintaining temperature, subjecting the material to thixoforming after the interior and exterior temperature of the material becomes uniform, and then carrying out cooling to room temperature so as to obtain the copper-based alloy material. The method provided by the invention improves the mechanical properties of copper alloy, thereby better meeting load requirements of a heavy-load sliding bearing.

Description

Technical field [0001] The invention relates to a preparation method, in particular to a preparation method of a copper-based alloy material for bearings. Background technique [0002] At present, some heavy-duty sliding bearings in low-temperature and high-temperature working environments require extremely strong tensile strength, bending strength and wear resistance, and their mechanical properties are extremely strict. [0003] Most of the existing heavy-duty bearings are made of copper alloys. Although they have excellent mechanical properties, with the continuous development and advancement of science and technology, the functions of mechanical equipment are continuously improved and improved, and the requirements for the load on the bearings are getting higher and higher. Heavy-duty bearings made of copper alloys have been difficult to meet the increasing load requirements of mechanical equipment. Summary of the invention [0004] In view of the above shortcomings of the prio...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing heavy-duty bearings are made of copper alloy. Although the mechanical properties are excellent, with the continuous development and progress of science and technology, the functions of mechanical equipment are constantly improved and improved, and the load requirements for bearings are getting higher and higher. Heavy-duty bearings made of copper alloys have struggled to meet the ever-increasing load requirements of mechanical equipment

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