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本检查制度适用于普通和低合金球墨铸铁的生产。一、原材料的质量检查: 1.进厂生铁,铁合金,各种稀土合金应进行化验,合乎厂标要求方可使用。材料应根据成份分类堆放。稀土合金应专门保管,并注意防潮变质。 2.进厂焦炭及煤粉要检查其成份,合乎厂标要求方可使用。煤粉要检查粒度及水份,粒度及水份过大的白煤粉应作予先处理,方可使用。
The inspection system applies to the production of ordinary and low-alloy ductile iron. First, the quality inspection of raw materials: 1. Into the factory pig iron, ferroalloy, a variety of rare earth alloys should be tested, in line with factory standard requirements before use. Materials should be classified according to the ingredients stacked. Rare earth alloys should be specially kept, and pay attention to moisture and deterioration. 2. Into the factory coke and coal to check its composition, in line with factory standard requirements before use. Pulverized coal to check the particle size and moisture, particle size and water is too large white coal powder should be dealt with before use.