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內燃机連杆和主軸承軸瓦的耐磨合金,普遍采用錫基、鉛基巴氏合金及銅鉛合金等几种。但巴氏合金仅能用在120℃左右的較低工作溫度;含鉛量为25～30％的銅鉛合金軸瓦,在有鉛、錫等鍍层的情現下,承載强度及許可工作温度虽較高,但当失去鍍层后磨損就显著增大,而且它对机油的耐腐蝕性随着工作溫度的升高而降低,銅渗入钢中后又成为曲軸发生断裂的
Internal combustion engine connecting rod and bearing bearing wear-resistant alloy, commonly used tin-based, lead-based Babbitt and copper-lead alloy, and several other. However, the pasteurized alloy can only be used at a lower working temperature of about 120 ℃. Copper-lead alloy bearings with a lead content of 25-30%. In the presence of lead and tin plating, the bearing strength and permissible operating temperature High, but when the loss of coating significantly increased wear and tear, and its corrosion resistance of oil as the working temperature decreases, the copper infiltration into the steel after the crankshaft rupture again