Method for prolonging service life of bar slitting and rolling finished product hole

Abstract

The invention relates to the field of iron and steel smelting, in particular to a method for prolonging the service life of a bar slitting and rolling finished product hole. The method for prolongingthe service life of the bar slitting and rolling finished product hole comprises the steps: after the bar is cut, a first-section rolled piece and a tail-section rolled piece are included; the first-section rolled piece and the tail-section rolled piece are conveyed to a finished product hole after being twisted by a twisting guide; the first section rolled piece and the tail section rolled pieceare respectively twisted by the twisting guide; and during twisting, the first rolled piece and the tail rolled piece are twisted in a mirroring mode. The slitting ends are twisted toward the direction of an identifier, so that the slitting ends with higher temperature can be always in contact with the identifier in the finished product hole, and the first end and the second end of the bar with lower temperature can be prevented from being in contact with the identifier in the finished product hole. Therefore, the situation that the finished hole is integrally replaced due to different abrasion degrees of the finished hole caused by uneven temperature can be avoided. Further, the service life of the finished product hole can be effectively prolonged.

Description

technical field [0001] The present application relates to the field of iron and steel smelting, and in particular, relates to a method for increasing the service life of holes in finished products of bar splitting and rolling. Background technique [0002] Such as figure 1 , usually the end stand of the bar production line, that is, the finished rolling mill, is called K1, and the other rolling mills are named K2, K3, K4, K5, K6, etc. in turn from the finished rolling mill forward. [0003] Slit rolling refers to rolling a bar into two or more parallel rolled pieces with the same shape by using the function of the pass during the rolling process, and then using the splitting guide to tear the parallel rolled pieces longitudinally. Split into two or more single rolled pieces. Burrs are likely to occur at the slit strip of the rolled piece after being torn by the slitting guide. When the slit rolled piece enters the round hole (finished product hole) from the oval hole, it n...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiment of the present application is to provide a method to improve the service life of the finished hole of the bar splitting and rolling, which aims to improve the existing problem of short service life of the finished hole

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