The relationship between annealing cracks and heating temperatures of Ni-based alloy cold-formed billets and the causes of annealing crack occurrence are studied.

研究了镍基合金冷变形管坯退火裂纹与加热温度的关系和退火裂纹产生的原因。

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Analyzing the reasons of semi-steel cold ingots crack occurred in heating and theoretically calculating heating speeds of semi-steel cold ingots, a practical curve of heating process is worked out.

通过分析半钢冷锭加热裂纹产生原因，以及对半钢冷锭加热速度进行理论计算，制订了切实可行的加热工艺曲线。

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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。

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