摘要
继气动微震压实造型、树脂砂造型等方法成功地应用于生产中之后,在七十年代后期和八十年代前期,又出现了真空密封造型、气流冲击造型、冷冻造型、静压造型、喷射造型、吸压造型、模板差动压实造型等新的造型方法。它们在提高铸件质量和等级、改善劳动条件、增加铸件产量、老设备更新换代、适应多品种小批量生产等方面,都在不同程度上起着引导作用,受到铸造工作者的重视。
As the processes of pneumatic vibratory jolt squeeze molding,resin-bonded sand molding etc have been successfully used in foundry production,new molding processes such as vacuum molding,air impact molding,frozen molding,static pressure molding,projecting,molding,suction squeeze molding as well as differe- ntial squeeze molding have subsequently come on the stage in the late 1970s and the early 1980s.These techniques in the aspects of improving casting guality and grade,improving working conditions,increasing casting produticvity,rene- wal of obsolete equipment,accommodating to great variety and short run pro- duction etc have shown its leading effects in varying degrees.
