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Predicting method of rolling mill torque in slab rolling process

A technology of rolling process and prediction method, which is applied in the field of medium and heavy plate rolling, and achieves relatively accurate and accurate prediction results

Active Publication Date: 2015-10-07
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for predicting the torque of the rolling mill in the slab rolling process, which solves the problem of calculating the reduction limit of a certain billet shape in the medium and heavy plate rolling mill before rolling

Method used

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  • Predicting method of rolling mill torque in slab rolling process
  • Predicting method of rolling mill torque in slab rolling process
  • Predicting method of rolling mill torque in slab rolling process

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Embodiment Construction

[0012] 1) Find the rolling process data of a certain steel grade according to the three-level data of the rolling mill, such as Q345B, and collect the process parameters of the rolling process, such as: calculating thickness of 300mm, pass reduction of 25mm, rolling width of 3800mm, measuring rolling The braking force is 42KNM.

[0013] 2) Substitute each parameter into the compiled calculation program, and adjust with the coefficient x until the calculated torque and the torque given in the system reach a certain accuracy. For example, when the coefficient of Q345B is 0.6, the two are closest, and the value of the two is about 2900KNm.

[0014] 3) Use the coefficient value to calculate the reduction and set the rolling parameters. For example, the upper limit of the rolling mill torque of a steel mill is 3200KNm. According to the calculation results, the Q345B of this specification reaches the reduction when the reduction is 50mm The upper limit.

[0015] image 3 To calculate th...

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Abstract

The invention discloses a predicting method of rolling mill torque in a slab rolling process and belongs to the technical field of medium heavy slab rolling. An equipment built-in rolling force fundamental formula is adopted, according to actual rolling process data, a rolling force and torque formula is regressed to be complied into an easily-operated computational procedure, and rolling reduction predicting under different rolling conditions can be conducted off-line. The predicting method of rolling mill torque in the slab rolling process has the advantages that budgeting of torque values under any rolling condition and any rolling reduction can be conducted, and the budgeting is conducted on the condition that the normal production rhythm is not influenced.

Description

Technical field [0001] The invention belongs to the technical field of medium and heavy plate rolling, and particularly relates to a method for predicting rolling mill torque during slab rolling. Especially in the rolling process of wide gauge billet requiring large reduction, the torque is predicted before rolling, and the ultimate reduction of a certain specification billet can also be determined. Background technique [0002] In the current steel plate rolling process, in order to ensure the performance of high-quality steel plates, controlled rolling technology is widely used. In the production process of many steel grades, large reductions are required in the low temperature stage to achieve this requirement. The equipment is The main restriction conditions, especially the torque that the work roll transmission device bears during the rolling process is the limiting link. The torque of the work roll transmission shaft has a rated requirement. In order to obtain the ultimate ...

Claims

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Application Information

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IPC IPC(8): B21B1/22B21B38/00
CPCB21B1/22B21B38/00
Inventor 路士平李家鼎马长文顾林豪王振强刘春明隋鹤龙狄国标杨永达李群樊星辰
Owner SHOUGANG CORPORATION
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