Form and dimension may also be achieved by a number of alternative processes such as hot or cold extrusion, sand casting, die casting, and precision casting. Sheet metal can be formed or drawn by the application of pressure. In addition to machining, metal removal can be accomplished by chemical or electrical methods. A great variety of workpiece may be produced without resorting to a machining operation. Economic considerations, however, usually dictate form generation by machining either as the complete process or in conjunction with another process.
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Combining RP technology and precision casting is a major way to rapidly manufacture metal parts.
快速成型工艺结合精密铸造技术是快速制造金属零件的主要途径。
Basing on the foregoing, we explored a rapid mould process consisting of RP and precision casting and used it to manufacture a casting mould for Changan auto-engine inhaust tube.
以上述思想为基础，本论文研究了以快速原形技术和陶瓷型精密铸造为基础的快速模具制造工艺，并将该工艺用于汽车发动机进气歧管铸造模具的快速制造。
This paper introduces the making method of the strippable soft dies of handiworks and precision casting wax patterns which are made of the silicic rubber and PVC and its practical application.
介绍了用硅橡胶和聚氯乙烯两种材料制作工艺品及精铸蜡模的可剥软模具的制作方法及其实际应用。
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