进一步提高剪切圆钢端头质量的研究

Investigation in Further Improvement of Quality of Sheared Ends of Round Steel Bar

在剪切中，发现在圆钢的端头有一定的压痕，经分析认为这是由于剪切力矩造成的轧件弯曲的原因。如果在剪切过程中，加上一个与剪切力矩大小相等或相近的反力矩，这样保证轧件不产生弯曲，从而使轧件与剪刃之间的接触面积增大，可完全消除或进一步减小压痕。

In the shearing process it is found there are definite pressed marks onends of round steel bar,it is due to the fact that shearing moment causes rolled productbending,if a count-shearing moment that is equal or similar to the shearing moment insize is applied,so makes sure rolled product be not bent,as a result contact surface between rolled product and shear edge increases,and pressed marks may be entirely eliminated or reduced further