Roughing-rolling reversable mill strand continuous rolling process

Abstract

The present invention relates to a roughing-down reversing rolling mill straightaway and tandem rolling process. It adopts two-stand straightaway setup form, the distance between two reversing rolling mills is 10-70m, the blank can be undergone the straightaway rolling or tandem rolling process of two reversing rolling mills, and its total rolling pass is greater than or equal to even-numbered pass of two passes, in which the initial two passes of the described two stands are straightaway rolling and the final two passes are tandem rolling or straightway rolling.

Description

technical field [0001] The invention relates to a rough rolling reversing mill rolling process. Background technique [0002] The rough rolling area of ​​the existing hot tandem rolling mill generally has several types of rack layouts: [0003] 1. Typical 3 / 4 continuous rolling form: it consists of four stands R1~R4, where R1 is one pass rolling, R2 is reversible rolling, and R3 and R4 are continuous rolling, such as figure 1 shown; [0004] 2. The form of semi-continuous rolling, the rough rolling is composed of two independent reversible rolling mills, for example, the stands R1 and R2 can be rolled for 3 passes respectively, such as figure 2 shown; [0005] 3. Semi-continuous rolling, only one reversible rolling mill for rough rolling; [0006] 4. Fully continuous or semi-continuous rolling, with more than 5 rolling mills for rough rolling; [0007] Each of these mills has its own characteristics. Generally speaking, the more rolling mills, the higher the hourly ou...

AI Technical Summary

Problems solved by technology

[0005] 3. Semi-continuous rolling, only one reversible rolling mill for rough rolling;

Generally speaking, the more rolling mills, the higher the hourly output of the unit, but due to the long rolling line and many rolling passes, the temperature loss of the rolling line is greater, and the investment is more

And there are too few units, such as only one reversible stand, although the length of the rolling line is short, the hourly output of the unit is low

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