Cast titanium tubes embedded in the material performance requirements

In order to obtain good medical casting Size casting titanium tube to embedding material expansion and thermal expansion compensation hardened metal casting contraction, is the most commonly used method.  titanium tubing grades  casting line shrinkage rate of 0.9-1.0%, and called for a total expansion of titanium tube when casting embedded material must be able to compensate for this range of metal shrinkage, and in principle, with the cast titanium tube system embedded material not mix. Therefore, the choice of cast titanium with embedded material conditions must have the following conditions:
    1. rarely react with titanium.
    2. Good surface properties can be obtained.
    3. The casting is not contaminated.
    4. Compensation titanium tube contraction moderate swell.