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我厂生产的SG8、003、093、1/2等躯壳铸件是节能仪表蒸汽流量计中的主要工作部件,铸件材质为HT20-40,在机加工后需能承受49MPa(5kgf/mm~2)的水压。铸件外表面有8片深浅不一的散热片,最大深度达40mm叶片壁厚为5 mm。由于叶片成型困难,一度将其做成实体,然后再把叶片加工出来,见图1所示。采用上述方式生产躯壳铸件,增加了材料消耗量及切削工时。同时,由于叶片做成
The castings of SG8, 003, 093, 1/2 and so on, which are produced by our factory, are the main working components in the steam meter of energy-saving instruments. The material of the castings is HT20-40 and can be 49MPa (5kgf / mm ~ 2) Water pressure. Castings have 8 different depths on the outer surface of the heat sink, the maximum depth of 40mm blade wall thickness of 5 mm. Due to the difficulty of forming the blade, it was once made into a solid body, and then the blade is machined out, as shown in FIG. 1. Using the above method to produce body castings, an increase of material consumption and cutting time. At the same time, due to the blade made