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随着改造自然,开发和利用自然资源活动的不断伸展,在海底、地下及江河中工作的机械日益增多,它们既受到液体介质的腐蚀,又受到石英砂、刚玉、泥土等坚硬质点的磨粒磨损,即使在地面上工作的机械中也不乏这种工作条件的另件。本研究根据这种典型机械易磨件的工作条件,进行了模拟对比试验,通过各种化学热处理来提高其使用寿命,模拟对比试验发现,A_1点下氮碳共渗处理的20Cr、20CrMo、38CrMoAl等试样比20CrMo渗碳试样抗液体介质腐蚀磨粒磨损耐磨性要高一倍以上。而且从现场二
With the continuous transformation of nature, the development and utilization of natural resources, there is an increasing number of machines working on the sea floor, underground and rivers. They are both corroded by the liquid medium and are hardened by hard particles such as quartz sand, corundum and earth Wear, even in the machinery working on the ground there is no lack of other parts of this working conditions. According to the working conditions of this typical mechanical wear part, this study carried out a comparative simulation experiment, through various chemical heat treatment to improve its service life, simulated comparative test found that under the A_1 point nitrocarburizing 20Cr, 20CrMo, 38CrMoAl Other samples than the 20CrMo carburizing sample corrosion resistance of abrasive medium abrasive wear more than doubled. And from the scene two