On cooling and contraction, the small cracks further expand into hottearing defect.
铸件冷却收缩时，小的裂纹源进一步扩展形成裂纹缺陷。
2
The effects of antimony and mischmetal on the casting properties of AZ31 alloy were investigated using the differential thermal analysis and hottearing ring method.
用差热分析及热裂环法研究了锑和混合稀土对AZ31镁合金铸造性能的影响。
3
It is liable to produce various casting defects, such as coarse grain, shrinkage cavity, shrinkage porosity, hottearing, microstructure segregation and solute segregation.