Switching method of hot-rolling recoiling machines

Abstract

The invention discloses a switching method of hot-rolling recoiling machines. The switching method comprises the steps that at the moment t1, a first recoiling machine, a second recoiling machine and a third recoiling machine are in an automatic switching mode, when the former strip steel enters the third recoiling machine and a steel biting signal is generated, the state of the first recoiling machine is judged the first time, and the first recoiling machine is the selected recoiling machine of the current strip steel; at the moment t2, when the current strip steel generates a steel biting signal at F7, the state of the first recoiling machine is judged the second time; at the moment t3, when the current strip steel reaches a fourth set of roller way, the state of the first recoiling machine is judged the third time; at the moment t4, when the current strip steel reaches an eighth set of roller way, the state of the first recoiling machine is judged the fourth time; if the fourth state judgment of the first recoiling machine is successful, the state of the first recoiling machine is judged the fifth time; if the five times of state judgments are successful, the first recoiling machine receives the current strip steel.

Description

technical field [0001] The present application relates to the field of metallurgical industry, in particular to a method for switching hot rolling coilers. Background technique [0002] The coiler is a very important equipment in the hot rolling production line. It is used to coil the steel strip produced by the finishing mill. The coiled steel strip is coiled for the next step of packaging and spraying. Generally, three coilers are installed on the hot rolling site for alternate production. After the previous piece of steel strip enters a certain coiler, how to select the next coiler for the next piece of steel strip is very important for normal production. The hot rolling coiler switching technology includes manual and automatic switching, but there are still the following problems: ①The normal switching time is relatively long, which affects the fast rolling rhythm of the entire rolling line; ②It is difficult to operate the switching process when the coiler is abnormal ...

AI Technical Summary

Problems solved by technology

The hot rolling coiler switching technology includes manual and automatic switching, but there are still the following problems: ①The normal switching time is relatively long, which affects the fast rolling rhythm of the entire rolling line; ②It is difficult to operate the switching process when the coiler is abnormal , it is easy to cause a coiler stacking steel accident; ③ does not have the function of automatically switching the coiler under abnormal conditions

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