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一、滑动轴承材料1.减摩合金绝大多数装置的滑动轴承采用巴氏合金、铅青铜和铝合金,有时也使用锌基合金。1)巴氏合金。由于锡稀缺且价昂,故多用铅基合金2(机车柴油机曲轴轴承)和6(COC 6—6)(主要用于汽车)。它们具有良好的抗咬合性、顺应性和嵌入性,然而疲劳强度都较低。合金层出现疲劳裂纹和剥落,乃是轴承损坏的主要原因。为提高这类轴承的工作能力,主要采用三种方法:a)寻求合理的轴承结构:如100型柴油机改用无油槽轴瓦后,由于最小油膜厚度增加一倍,而使最大油膜压力降低,从而使轴瓦工作潜力提高30～40%。
First, the sliding bearing material 1. Antifriction alloy The vast majority of devices using sliding bearings Babbitt, lead bronze and aluminum alloys, sometimes using zinc-based alloys. 1) Babbitt. Due to the scarcity and high price of tin, lead-based alloy 2 (locomotive diesel engine crankshaft bearings) and 6 (COC 6-6) (mainly used for automobiles) are mostly used. They have good seizure resistance, compliance and embedment, however, are less fatigue-resistant. Fatigue cracks and spalling alloy layer, but the main bearing damage. In order to improve the working ability of this type of bearing, there are mainly three methods: a) Seeking a reasonable bearing structure: If 100 diesel engines are replaced with oil-free bearing shells, the maximum oil film pressure is reduced due to the doubling of the minimum oil film thickness So that the work potential of the bush increased by 30 ~ 40%.