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由轮心和轮箍组成的铁路车轮(带箍铁路车轮)是通过加热轮箍进行压装的。根据技术条件,轮箍的温度应为250～320℃,而同一轮箍上的温度差(加热不均匀性)则不许超过50℃。车轮的拆卸也是用加热或用气体割炬切割轮箍的方法来完成的。在用割炬切割的情况下,需要特别小心,否则往往会损伤轮心的配合表面,并且这些零件一旦受到损伤后只能在修复(堆焊和车削)后才能重新使用。组装时采用电阻炉加热,生产效率极低;而在拆卸时用电阻炉则是不可能的。采
Railway wheel (wheel with hoop) composed of wheel center and wheel rim is press-fitted by heating wheel rim. According to technical conditions, the temperature of the wheel rim should be 250 ~ 320 ℃, while the temperature difference (heating nonuniformity) on the same wheel rim should not exceed 50 ℃. Wheel disassembly is also done by heating or cutting the tire with a gas torch. Special care should be taken when cutting with a torch that would otherwise damage the mating surfaces of the wheel hubs and, once damaged, may only be re-used after repair (welding and turning). Resistance furnace assembly when the heating, production efficiency is very low; resistance furnace in the demolition is impossible. Mining