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轴承在使用过程中,受力颇为复杂。由于接触面积小,故在使用时将承受很大的应力,据资料所载,达150～500公斤/平方公厘,且不断地发生伸长与压缩的弹性变形。因此,当选择轴承材料时,必须考虑到应具有一定的强度、耐磨、及抗疲性能。铬加入钢中,增加了钢的硬化深度,因而在热处理后具有较高的机械性能。根据某些资料指出,шХ15钢淬火后的性能如下:抗拉强度220～260公斤/平方公厘,屈服强度170～185公斤/平方公厘,比例极限为115～125公斤/平方公厘,硬度60～65Rc,冲击韧性0.3～0.7公斤·公尺/平方公分。且其价格低廉,因
Bearing in use, the force is quite complex. As the contact area is small, so in use will be under great stress, according to the information contained, up to 150 ~ 500 kg / mm2, and continue to occur elongation and compression of the elastic deformation. Therefore, when choosing the bearing material, we must take into account should have a certain strength, wear resistance, and fatigue resistance. Chromium added to the steel increases the hardened depth of the steel and therefore has a high mechanical properties after heat treatment. According to some sources, the hardened properties of Х15 steel are as follows: tensile strength of 220-260 kg / mm2, yield strength of 170-185 kg / mm2, and proportional limit of 115-125 kg / mm2. Hardness 60 ~ 65Rc, impact toughness 0.3 ~ 0.7 kg · m / cm. And its low price, because