结果表明：用冶炼高钛渣的副产半钢生产球墨铸管在工艺上是可行的。
As a result, it is feasible that making of ductile iron pipe use of semi-steel.
目的比较不同包埋材料对铸钛适合性的影响。
Objective To compare the effect of different investment materials on the fit of titanium castings.
结合大型钛材铸焊结构高速鼓风机叶轮的研制，阐述了其叶轮的制造工艺特点。
Combining with development of high speed blower impeller with large titanium material cast welding structure, the manufacturing technical feature of the impeller is set forth.
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