Method for eliminating jaw bending of inner ring of hot-rolling finishing coil

Abstract

The invention discloses a method for eliminating jaw bending of an inner ring of a hot-rolling finishing coil. The method comprises the steps that firstly, the head of strip steel is placed in a jaw of a jaw-type coil cylinder to be coiled, and the coiled strip steel coil is placed on a steel coil trolley, so that the tail of the outer ring of the strip steel coil is placed on a supporting plate of the steel coil trolley; secondly, the jaw-type coil cylinder is contracted, so that gaps of all layers of the strip steel coil are same; thirdly, half of the strip steel head in the jaw is pulled out of the jaw, and the pulled-out part is flattened; fourthly, an all-cotton fabric on the strip steel head in the jaw in the third step is pulled out of the jaw, and the pulled-out part is flattened;fifthly, the jaw-type coil cylinder is rotated to enable the jaw and the strip steel head to make relative displacement, the length of relative replacement is the same as the length of the pulled-outpart in the fourth step, and the relative displacement part is flattened; and sixthly, the strip steel coil is pulled out. Jaw bending caused by the jaw-type coil cylinder can be effectively eliminated.

Description

technical field [0001] The invention relates to a method for eliminating the pinch bending of the inner ring of a hot-rolled finishing roll. Background technique [0002] At present, the steel head of the inner ring of the hot-rolled finishing coil is generally bent by the jaws, such as figure 1 As shown in part A of the steel coil, the loading and uncoiling of the hot rolling process are generally fully automatic operations. The bending of this part will affect the inner diameter of the steel coil, which will bring the risk of core pulling and overturning to the automatic loading of the next process. , More and more cold rolling processes have clearly required that the inner ring of the hot-rolled steel coil must not be bent. [0003] The main reason for the occurrence of jaw bending is that most of the domestic coiling units are basically equipped with jaw type reels, such as the jaw type reel with patent number 200820226945.5. The working principle of the jaw type reel ...

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art of hot rolling, the method of cutting and removing the bent part of the jaw in the storage area can solve the problem of bending the jaw, but it increases the manual workload, the efficiency of manual cutting operation is low, and the manufacturing cycle is increased. And the cutting place is also less beautiful

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