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铝活塞毛坯重力硬模铸造,目前国内普遍采用的浇注系统有鹅颈式,蛇形和刀形三种。冒口的设置,多采用双冒口。浇冒口重量与毛坯重量的比值较大,一般在1～1.5左右。国外的情况比较先进,比值比我国小得多。据机械工业部82年10月赴西德,英国“活塞技术考察报告”中介绍;英国威尔沃斯公司为0.5～0.6,西德卡尔斯密公司为0.3～0.4,西德马勒公司为最先进,估计不大于0.2。 为了减少能源和材料的消耗,国内各厂家多年来一直在研究和探讨缩小这一比值的方法,以争取较好的经济效益。某些厂家,采用单冒口铸造,收到一定的效益。但是,至今没有重大突破。浇冒口重量与毛坯重量的比值,与国外先进水平相比仍有很大差距。
Aluminum piston rough die casting, the current domestic commonly used casting system gooseneck, serpentine and knife-shaped three. Riser settings, the use of double risers. Riser weight ratio and the weight of rough larger, usually in the 1 ~ 1.5 or so. The foreign situation is more advanced, the ratio is much smaller than our country. According to the Ministry of Machinery Industry in October 1982 to West Germany, the United Kingdom, “Piston Technology Inspection Report” introduced in the United Kingdom; Wilcox company 0.5 ~ 0.6, West Germany Karl Smith Company 0.3 ~ 0.4, West Germany Mailer company The most advanced, it is estimated not more than 0.2. In order to reduce energy and material consumption, domestic manufacturers over the years has been studying and exploring ways to reduce this ratio in order to obtain better economic returns. Some manufacturers, using a single riser casting, received some benefits. However, no major breakthrough so far. Riser weight and the ratio of the weight of rough, compared with the advanced level of foreign countries is still a big gap.