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1.初次试用的情况,去年我厂铸造五十吨货车铸钢摇枕,外型采用潮模,内腔由11块干砂芯组合而成.每块砂芯大小约为400×200×300公厘,重约25公斤.芯砂成分原为4号右英砂100公斤,圩子土4公斤,莜面1公斤,松香1公斤,糖浆1公斤,豆油0.5公斤.因经常大量生产,粘结剂的费用很大,乃设法利用纸浆废液来代用.但太原地区均系碱性造纸,成分与亚硫酸盐纸浆废液不同;这种废液内有苛性钠1%,其余是水
1. The first trial of the situation, last year I cast 50 tons truck cast steel bolster, the appearance of the use of tidal mode, the cavity consists of 11 dry sand core combination of each sand core size of about 400 × 200 × 300 Mm, weight about 25 kg core sand composition was originally No. 4 right sand 100 kg, 4 kg Wei soil, Kamen 1 kg, 1 kg of rosin, syrup 1 kg, 0.5 kg of soybean oil. Due to frequent mass production, sticky The cost of the caking agent is great, and it is trying to use the pulp waste instead, but in Taiyuan area are all alkaline papermaking, the composition is different from sulfite pulp waste; this waste has caustic soda 1%, the rest is water