A method for protecting the straightening force at the entrance and exit of a hot straightening machine

A thermal straightening machine and straightening force technology, which is applied in the field of straightening force protection at the entrance and exit of the thermal straightening machine, can solve the problem that the gap between the entrance and the exit is large, cannot play a protective role, and cannot be straightened at the entrance and exit. Roller protection and other issues to avoid roll breakage accidents

Active Publication Date: 2012-02-01
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the straightening force protection function of the thermal straightening machine is to calculate the straightening force according to the straightening model and multiply it by 1.2 times as the protection setting value. This method only protects the resultant force, which is not accurate. Sometimes it cannot play the proper protective role, which often leads to broken roll accidents
The straightening force model assumes that the difference between the entrance and exit roll gap is large, and the tilting value reaches 7mm, causing the entrance straightening force to be about 2 times larger than the exit straightening force. Straightening rollers for protection

Method used

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Examples

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Effect test

Embodiment Construction

[0014] This method calculates the straightening force of steel plates of different varieties and specifications and counts historical records of broken rolls as the setting basis, increases the group protection function of the entrance and exit straightening force according to the thickness of different steel plates, and modifies the total straightening force multiple from the fixed 1.2 to straightening Direct force multiplier is configurable.

[0015] The specific description is as follows:

[0016] The configurable values ​​of the group protection are as follows:

[0017] For steel plates below 16mm, the protection value of the straightening force at the entrance and exit of the hot straightening machine is set to 16000KN;

[0018] For 16-25mm steel plate, the protection value of the straightening force at the entrance and exit of the hot straightening machine is set to 15000KN;

[0019] For 25-40mm steel plate, the protection value of the straightening force at the inlet ...

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Abstract

The invention relates to a method for protecting the straightening force at the entrance and exit of a hot straightening machine. The feature is that the protection values ​​are set separately for the straightening forces at the entrance and exit of the hot straightening machine, and are set as configurable values ​​for group protection according to the thickness of the steel plate. The invention has the advantages that: the protection values ​​of the straightening forces at the entrance and exit of the hot straightening machine are set respectively, and the protection values ​​are set in groups according to the thickness of the steel plates, which can effectively avoid the occurrence of roll breaking accidents.

Description

technical field [0001] The invention relates to a method for protecting the straightening force at the entrance and exit of a hot straightening machine. Background technique [0002] In the prior art, the straightening force protection function of the thermal straightening machine is to calculate the straightening force according to the straightening model and multiply it by 1.2 times as the protection setting value. This method only protects the resultant force and is not accurate. Sometimes it cannot play the proper protective role, which often leads to broken roll accidents. The straightening force model gives a large difference between the entrance and exit roll gaps, and the tilting value reaches 7mm, causing the entrance straightening force to be about 2 times larger than the exit straightening force. Straightening rollers for protection. Contents of the invention [0003] The purpose of the present invention is to provide a method for protecting the inlet and outl...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B21D1/02
Inventor张琳杨洲王小强吴海泉
OwnerANGANG STEEL CO LTD