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车辆轴瓦一般都是采用三连金属结合而成,即是在铸铜的底瓦上,浇铸一层铜合金,然后再在铜台金上浇铸一层白合金。自球墨铸铁制造成功以后,人们都想利用它来代替铜质的底瓦,这样不但可以节钢料,并且还可以减少铸造方面及加工方面的困难。可是由于球墨铸铁中有石墨,它对铜的结合性不强,因而给这一工作的发展带来了不少的因难。车辆轴瓦一般都是采用三连金属精合而成,即是在铸铜的底瓦上,浇铸一层铜合金,然后再在铜台金上浇铸一层白合金。自球墨铸铁造成功以后,人们都想利用它来代替铜质的底瓦,这样不但可以节省钢料,并且还可以减少铸造方面及加工方面的困难。可是由于球墨铸铁中有石墨,它对铜的结合性不强,因而给这一工作的发展带来了不少的因难。
Vehicle bearings are generally used in conjunction with three metal, that is, at the bottom of cast copper tile, cast a layer of copper alloy, and then casting a layer of white gold on the copper alloy. Since the successful manufacture of nodular cast iron, people want to use it to replace the copper bottom tile, so not only steel section, but also can reduce the casting and processing difficulties. However, due to graphite in ductile iron, its combination with copper is not strong, which has brought many difficulties to the development of this work. Vehicle bearings are generally made of three metal precision, that is, at the bottom of cast copper tile, cast a layer of copper alloy, and then casting a layer of white gold on the copper alloy. Since the success of ductile cast iron, people want to use it to replace the copper bottom tile, so not only can save the steel, but also can reduce the casting and processing difficulties. However, due to graphite in ductile iron, its combination with copper is not strong, which has brought many difficulties to the development of this work.