改进蜡型制作工艺提高钛支架的铸造完整性

目的：研究不同蜡型制作工艺对钛支架铸造完整性的影响。方法：统计1626件钛支架铸件,按蜡型制作工艺不同分为4组,检测出有铸造缺陷的钛铸件,计算每组铸造缺陷率。结果：常规组、设置排气道组、安置水平铸道组、设置水平铸道与排气道组的铸造缺陷率分别是26%、8%、13%、2%,组间比较有显著性差异。结论：在蜡型制作时,设置水平铸道与排气道可明显提高钛支架铸件的完整性。

The advance in making technology of wax mold to improve the integrality of titanium framework

Objective：To study the influence of improvement in the making technology of wax mold to the integrality of titanium framework.Method：To collect 1626 titanium frameworks finished in lasted five years,and divide into them 4 groups according to different making methods of wax mold.The defective castings were detected,and calculate the castings defective percent of each group.Result：The castings defective percent of conventional groups,devising exhaust port groups,level sprue groups,and devising exhaust port and level sprue groups is 26 %、8 %、10 %、2 % respectively.There is a distinct difference between them.Conclusion：Devising exhaust port and level sprue can greatly improve the integrality of titanium framework.