1958年全国大跃进后,在铸造方面,造型工段由于推行水玻璃砂、组芯造型、湿型和金属型,产量很快地就翻上去了,但在清砂工段措施不多,形成清砂工段跟不上造型工段,铸件大量积压的情况;另一方面,清砂工段的劳动条件原来就很不好,虽全国各厂曾大搞土设备,但铸工车间清砂工段搞的不多,当时对水力清砂有一定顾虑:根根过去设计资料,先要投资6O~80万元;设计工作最大,原第三设计分局设计的周期为8个月,厂内设计科重新审查一遍又化了三个月;施工时间长,洛阳矿山机器厂自1957年2月搞水力清砂,至今尚未完工。 After the Great Leap Forward in 1958, in the casting industry, due to the implementation of water glass sand, core molding, wet type, and metal type in the molding section, the production volume quickly turned up, but there were few measures in the sand cleaning section to form a clean sand. Sections can not keep up with the sculpting section, a large number of castings in the case of the situation; the other hand, the sand conditions of the working conditions of the original is very bad, although the country has been a large factory of soil equipment, but the cast workshop sand cleaning section engaged in little, At that time, there was a certain concern for hydraulic sand removal: In the past, the root design data, the first investment was 60-800,000 yuan; the design work was the largest, the design cycle of the original third design branch was 8 months, and the in-plant design department re-examined it again and again. Three months; construction time is long, Luoyang Mining Machinery Factory engaged in water-cutting sand in February 1957, has not yet completed.