论文部分内容阅读
采用有色金属合金作为模具材料具有制模简单、周期短、制件表面不易被划伤等优点。目前在国内外已有很大发展。一九七三年研制成功58％Bi(铋)、42％Sn(锡)的合金模具,并于一九七五年作了鉴定和推广。至今,这种合金已应用于汽车、拖拉机、飞机等制造行业。使用证明,在中、小批量生产的情况下,采用这种合金模具,具有明显的经济效果。由于该合金使用的Bi为稀有金属,产量少,材料供应困难。另一方面,为了进一步提高模具的使用寿命,根据一机部十年科技发展
The use of non-ferrous metal alloy as a mold material has the advantages of simple molding, short cycle, and easy scratching of the surface of the workpiece. At present, great progress has been made both at home and abroad. In 1973, 58% Bi (bismuth) and 42% Sn (tin) alloy molds were successfully developed, which were appraised and popularized in 1975. So far, this alloy has been used in automobiles, tractors, aircraft and other manufacturing industries. Use of proof, in the case of small batch production, the use of this alloy mold, with obvious economic effects. Due to the alloy used Bi Bi is a rare metal, less output, material supply difficulties. On the other hand, in order to further improve the service life of the mold, according to a machine Decades of scientific and technological development