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A Prediction 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: 2017-03-08
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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  • A Prediction Method of Rolling Mill Torque in Slab Rolling Process
  • A Prediction Method of Rolling Mill Torque in Slab Rolling Process
  • A Prediction Method of Rolling Mill Torque in Slab Rolling Process

Examples

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Embodiment Construction

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

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

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

[0015] image 3 Under the cond...

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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 thick plate rolling, in particular to a method for predicting the torque of a rolling mill in the slab rolling process. Especially in the rolling process of steel billet with wide specifications requiring large reduction, the torque prediction can be carried out before rolling, and the limit reduction of a certain specification steel billet can also be determined at the same time. 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 types, it is required to use a large reduction in the low temperature stage for rolling. To achieve this requirement, the equipment is The main limiting conditions, especially the torque borne by the transmission device of the work roll in the rolling process is the limiting link. The torque of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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