大中型球磨机中的铸铁—轴承合金双金属球面轴瓦一般采用单件浇注,经划线和平面加工后合并,再经车加工等工序。这种方法铸造工时高,生产率低。另一种采用先刨平合并后浇注,然后内外径车加工,再经铣加工切割(主要切割轴承合金层)成为两件,又经刨加工或铣加工平面,最后铁槽。后一方法铸造生产率提高约一倍,但增加了切割,刨平两道机械加工工序。我厂原采用后一种工艺方法生产。 Large and medium-sized ball mill in the cast iron - bearing alloy bimetallic bearings commonly used single-piece castings, after scribing and planar processing after the merger, and then by car processing and other processes. This method has a high casting man-hour and low productivity. Another use of the first plane after the merger pouring, and then inside and outside the car processing, and then milling cutting (the main cutting bearing alloy layer) to become two, and after planing or milling plane, the last iron groove. The latter method of casting productivity increased by about double, but increased cutting, planing two machining processes. I used to plant after a production process.