中英文外文翻译压力铸造

中英文外文翻译压力铸造内容摘要：

equipment and manhour。 The price of the casting is easy。 Can adopt and make die casting up with other metal or nonmetallic materials . Assemble manhour save metal also sparingly. There are a lot of advantages in though die casting, but there are some shortings, to be solved. For instance: 1) Because one of speeds is high in the liquid metal filling with type at the time of die casting, the flow state is unstable, so adopt and generally press the casting method, the 南通职业大学毕业设计 (论文 ) 39 casting is apt to produce the air vent, not Can heattreat。 2) To the concave and plicated casting, die casting is paratively difficult。 3)High point alloy (such as the copper, ferrous metal), it is relatively low to press the lifespan of casting mould。 4)Should not produce in batches small , it is with high costs that its main reason pigeonholes the casting mould and is made, the production efficiency of die casting machine is high, produce in batches uneconomically small. Second . The range of application of die casting and development trend Die casting is one of the most advanced metal shaping methods , realizing lacking the smear metal, without effective way of smear metal, it is very wide to use。