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缸体是高压轴向柱塞泵的重要部件。用烧结扩散焊接工艺制取的粉末冶金双金属缸体,是以45号钢作为缸体基体,在柱塞孔侧壁和配油面,烧结一层减摩性好的铜铅材料而成的一种复合结构制品。本文简述了缸体减摩材料的机械、物理性能,列出了两轮台架试验的主要结果。试验表明:型式试验结束后泵的容积效率为η_v=92.35％,高于部颁标准要求(η_v=88％),且减摩层磨损量极微。粉末冶金双全属缸体与QAL9—4青铜整体结构缸体和浇铸双金属缸体比较,可大幅度节约铜合金材料。根据试验测算,一个63CY14—1B泵缸体,可节约铜合金约8kg。
Cylinder is a high pressure axial piston pump an important component. Sintering diffusion welding process made of powder metallurgy bimetallic cylinder, 45 steel as the cylinder base, the plunger hole in the wall and oil distribution, sintering a layer of anti-friction and good copper and lead material A composite structural product. This article outlines the mechanical and physical properties of the cylinder friction-reducing materials and lists the main results of the two-wheel bench test. The test shows that after the type test, the volumetric efficiency of the pump is η_v = 92.35%, which is higher than the standard of the Ministry of Education (η_v = 88%). Powder metallurgy double all-cylinder and QAL9-4 bronze overall structure of the cylinder and cast bimetallic cylinder, can greatly save the copper alloy material. According to test calculations, a 63CY14-1B pump cylinder, copper alloy can save about 8kg.