Two materials combined through the technique by macromolecules, on the basis of the different shrinkages from aluminum and the wood.
两种材料通过高分子尼龙件连接，充分照顾了木材和金属收缩系数不同的属性。
2
The result shows that there are no casting defects, such as shrinkages, blowholes, and slag inclusions and the quality of casting is steady.
生产结果表明，铸件没有气孔、夹砂、夹渣、收缩等铸造缺陷，铸件品质稳定。
3
In order to eliminate the shrinkages, the casting process was optimized by using pad and insulated risers, which decreased the shrinkages, so the reasonable casting process was gained.