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本试验的目的是:1、判明化学镀镍修复柱塞偶件在寿命上有无优越性;2、观察选择适用于柱塞偶件的含磷量,热处理规范;3、对比镀套与镀柱塞两种方案的耐磨性。材料与方法实验在燃油泵试验台上进行。实验采用平衡不完全区组法进行组织,每批试验取五台Ⅱ号燃油泵,每个油泵装有四种不同规范的试件,与非镀件进行对照。燃油泵在磨损试验前首先进行24小时磨合运转,然后进行磨损试验,实验时间为
The purpose of this experiment is: 1, determine whether the nickel plating repair plunger life in terms of any advantages; 2, observe the choice of suitable for the plunger of the phosphorus content, heat treatment specifications; 3, Plunger two programs wear resistance. Materials and methods The experiment was carried out on the fuel pump test bench. The experiment was carried out by the method of incomplete grouping by equilibrium method. Five sets of No.2 fuel pumps were taken from each batch of experiments. Each pump was equipped with four kinds of test pieces of different specifications, which were compared with non-plated parts. Fuel pump wear tests in the first 24 hours before running-in, and then wear test, the experimental time