The result reveals that the practical secondary cooling system is not suitable and easy to cause quality defects such as internal crack.
结果表明，目前的二冷制度不甚合理，易产生内裂纹等质量缺陷。
Bearing parts in the process of hardening cooling by internal stress due to the formation of quenching cracks crack said.
轴承零件在淬火冷却过程中因内应力所形成的裂纹称淬火裂纹。
Ceramicss are not typically formed from the melt. This is because most ceramics will crack extensively (i. e. form a powder) upon cooling from the liquid state.
陶瓷一般不是由熔化形成的。因为大多数陶瓷在从液态冷却时将会完全破碎(即形成粉末)。
It is pointed out that the source of crack is formed during the fast heating process and expanded following the fast cooling process.
即裂纹源产生于快速加热过程并在随后的快速冷却中得以扩展。
The incubation period of crack nucleation decreases and the crack propagation rate increases with the increase of thermal cycling temperature and cooling rate in the cycle.
随循环温度和冷却速率的增加，裂纹形核的孕育期缩短，裂纹扩展速率增加。
The result shows that high cooling speed is the main reason of reforming the crack. Meanwhile, the countermeasures were put forward and good effect was obtained.
结果表明，裂纹的产生是由于车轮辐板在热成型中受到强烈的冷却影响所致，从而采取了相应的改进措施，取得了较好效果。
Also a closing course of initial crack and thermal cracking coming into being in the cooling process are observed in our experiment.
实验还观察到砂岩表面微缺陷发生闭合的全过程，在冷却过程也有微裂纹形成等现象。
A method about improving the crack resistance of weld metal and reducing structure stress during welding process, i. e. hammering welds and watered rapid cooling after welding, was obtained.
研究出了提高焊缝金属抗裂性能及降低焊接过程结构内应力的工艺方法——焊后捶击焊逢并浇水快速冷却。
The cause of thermal crack of the "bridge" is found to be scale formation and insufficient flow of cooling water, that is verified by practical running of an engine.
找出了“鼻梁”处热裂的原因之一是由于水垢及水流不畅，并从实际发动机中得到证实。
Ceramics are not typically formed from the melt. This is because most ceramics will crack extensively (i. e. form a powder) upon cooling from the liquid state.
陶瓷一般不是由熔化形成的。因为大多数陶瓷在从液态冷却时将会完全破碎(即形成粉末)。
Crack perpendicular to the axis is caused on too rapid quench cooling, non-hardenability of the thick-walled department, as well as mutation of cross-section size. This is a typical arc-shaped crack.
垂直于轴线的裂纹是因为淬火快速冷却时。厚壁处未淬透以及截面尺寸突变产生的弧形裂纹。
Using replacement of cooling section to repair intercooler resulted in free crack and leakage, and lower maintenance cost.
采用抽换散热单节进行中冷器修复后无裂漏，并降低了检修成本。
The coating material can automatically crack-off from the permanent liner of pouring basket during cooling after use.
使用后在冷却过程中这种涂料能自动地从中间包永久衬上脱落。
The coating material can automatically crack-off from the permanent liner of pouring basket during cooling after use.
使用后在冷却过程中这种涂料能自动地从中间包永久衬上脱落。
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