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我厂是七十年代初开始应用热芯盒工艺的采用Z8612B射芯机,原配砂工艺如表1所示。表1型砂配比(%)湖南砂阜康破(占原砂重)(占原砂重)(占树脂重)100 70/140 50 3-3.5 0.3 25
I plant is the beginning of the seventies application of hot box process using Z8612B core shooting machine, the original sand process shown in Table 1. Table 1 Proportion of sand (%) Sand Fukang, Hunan (Original sand weight) (Weight of original sand) (Weight of resin) 100 70/140 50 3-3.5 0.3 25