Abstract
Apply an organic whole technological medium of computer aided three dimensions design 、computer aided solidification process numerical value simulation engineering ＆ computer aided numerical control programming manufacturing, by means of optimization product pattern structure、foundry processing parameters 、die auxiliary equipment and tool、riser gating system ＆ die cavity numerical control cutter location source file , the type of Z8A goods train low-carbon alloy adapter lost foam casting has been under development .Compare lost foam technology to ordinary sand mold casting ,the casting monomer weight lightened 3kg , grade of casting weight precision come to MT7 , grade of casting size precision come to CT8 ,foundry processing yield come to 65% ；Casting defects easily appeared in the course of large quantities production has been analysed ＆ offered solution methods in this article.
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