Bearing material obtained through loose sintering and having ultralow porosity and manufacturing method thereof
A technology of bearing material and manufacturing method, which is applied in the field of bearing materials, can solve the problems of unsatisfactory anti-fatigue strength and mechanical properties, and achieve the effect of meeting human health and environmental protection requirements, high mechanical strength, and excellent anti-fatigue performance
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[0065] Comparing Example 1 with Comparative Example 1 and Comparative Example 2, under the premise of the same ratio of different particle sizes, the mesh number of the small particle ball powder is reduced, so that the pores between the loosely stacked ball powders with larger particle size are covered. The ball powder with smaller particle size can be filled to the greatest extent, see image 3 . The porosity of the sintered body of Example 1 is reduced to less than 1%, and the maximum size of a single pore is only 35 um. As the particle size ratio decreases, the porosity of the sintered body and the maximum size of a single pore decrease rapidly. Experiments have proved that the copper alloy particle mixture in the loose state is not compressed, and only through the matching and mixing of copper alloy particles of different meshes, a denser sintered body can be obtained after sintering. Due to the high cost of the pressing equipment and the relatively complicated pressing pr...
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