Slender Hole Process of Titanium Alloy Prepared by Inlay Casting+Investment Casting
Titanium alloy slender hole specimens were prepared by inlay casting+investment casting,and microstruc-ture analysis,micro-morphology and chemical composition were carried out to investigate morphology and structural characteristics of the inlay cast interface bonding under different inlaying ratio and analyze the leaching effect of pickling on cast tube.The results indicate that the slender holes of inlay cast specimens can be formed completely,and the fusion effect of inlaid interface is desirable with the increase of inlaying ratio.When the inlay ratio reaches 20∶1,a fine and dense mesh fusion layer is distributed on the interface,which can be completely removed by pickling process.
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