Fast cooling speed was the main reason of generating cold crackle.

认为冷却速度过快是产生冷裂纹的主要原因.

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Affect the melt flow rate and the cooling speed.

会影响熔体的流动性和冷却速度.

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In transient rheological aspect, apparent viscosity increases more evident with the increment of cooling speed.

稳态流变情况下,低剪切速率随固相率的增加, 其表观粘度增加的速度较高剪切速率时的快.

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After steel parts are welded, the cooling speed directly affects the quality of welding.

钢零件焊后, 冷却速度的快慢直接影响焊接质量,预热是降低冷却速度的一种手段.

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The grain boundary segregation becomes more severe when the cooling speed is increased.

同时,随着冷却速率加大,晶界偏析变得更为显著.

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The cooling in gradient method was applied, the uneven cooling speed was avoided.

通过工艺改进,采用自上而下的梯度式降温方式, 避免了降温速度不均匀的问题.

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