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我厂在型砂及涂料方面,会有过数次改进与试验。(1)辊身部份:第1次配合情形:型砂:二号矽砂(含二氧化矽96%,粒度6目左右)100%,粘土(含氧化铝50%)10%,水份5%。
I plant in the sand and paint, there will be several improvements and tests. (1) Roller body part: The first time with the situation: Molding sand: Silica sand II (96% of silicon dioxide, particle size of about 6) 100% clay (including alumina 50%) 10% %.