蒸汽机车很多转动摩擦副采用了滑动轴承。根据不同的载荷,在轴承瓦体上挂着不同品种的白合金(轴承合金)。瓦体与白合金的浇挂质量直接关系着机车质量的高低。机车在定检时都要重新在瓦体上浇挂白合金。为了提高各种零、配件浇挂白合金的附着强度,在浇挂白合金前,被浇挂的零、配件都要进行彻底除油和清洗,并要放入预热炉中预热到所要求的温度。预热工作是保证白合金浇挂质量的一道很重要的工序。预热所用的预热炉种类很多,应根据对工件预热温度的要求、生产通过能力、零配件体积的大小、生产的经济性、能源的供给情况和 Many of the steam locomotive friction and friction using a sliding bearing. Depending on the load, hanging in the bearing tile body with different varieties of white metal (bearing alloy). Tile body and pouring the quality of white metal directly related to the level of quality of the locomotive. Locomotives in the inspection should be re-poured tile body hanging white gold. In order to improve a variety of zero, accessories, pouring white gold adhesion strength, before pouring white metal, was hanging hanging zero, accessories must be thoroughly degreasing and cleaning, and to be placed in the preheating furnace preheated to Required temperature. Preheating work is to ensure the quality of white metal pouring a very important process. There are many types of preheating furnaces for preheating, which should be based on the preheating temperature of the workpieces, the production capacity, the size of spare parts, the economy of production, the supply of energy and