A new sizing process schedule was applied to modify the sizing process and width reduction accuracy was improved obviously, the cutting loss at strip head and tail end was decreased also.

提出了新的减宽压下规程，对减宽技术进行了改进，减宽精度明显提高，带钢头尾部的切损减少。

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High local loads at leading edges, cobbles or doubling of the strip end (tail end pinching), exceed the shear strength of the shell material and initiate the crack.

过大的局部超负荷超过轧辊外层的抗剪切强度时则会引发裂纹。

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