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Technology for predicting and controlling surface roughness of finished plate for planishing mill

A control technology and roughness technology, applied in the direction of adaptive control, material size control, general control system, etc., can solve problems such as not found

Inactive Publication Date: 2006-07-19
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the domestic research on the surface roughness prediction model of the finished strip of the temper mill is blank, and no relevant literature has been found.

Method used

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  • Technology for predicting and controlling surface roughness of finished plate for planishing mill
  • Technology for predicting and controlling surface roughness of finished plate for planishing mill
  • Technology for predicting and controlling surface roughness of finished plate for planishing mill

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] According to rolling theory and field experience, it can be known that for the temper rolling process, the surface roughness of the finished strip is mainly superimposed by the roughness copied from the work roll to the strip and the genetic part of the strip roughness before tempering made. Among them, the roughness of the work roll copied to the strip surface is related to the roughness of the work roll itself and the impression rate (that is, the ability of the roll roughness to be transferred to the strip); the roughness of the inherited part of the strip before leveling is taken from The original roughness of the strip before leveling and the corresponding heritability. It can be seen that to realize the on-line prediction of roughness, it is very critical to obtain the expression of imprinting rate and heredity rate, and the present invention adopts the following formula to express the surface roughness of finished strip steel after smoothing:

[0082] Ra strip ...

Embodiment 2

[0125] 一般而言,对于特定平整机而言,建立成品板面粗糙度模型的目的之一是为了实现根据已知轧制工艺参数对成品的板面粗糙度进行在线预报。

[0126] image 3 是按照本发明一个较佳实施例的平整机成品板面粗糙度在线预报计算流程图。 该实施例被用于特定平整机成品板面粗糙度的在线预报,并且关于该平整机在平整前入口带材表面粗糙度与工作辊原始粗糙度及换辊后的轧制公里数已 Know.

[0127] 首先,在步骤31中,收集待平整带钢的主要特征参数,包括带钢的厚度h、强度k、原始表面粗糙度Ra ge Wait.

[0128] 随后,在步骤32中,收集平整机工作辊主要特征参数包括原始粗糙度Ra r0 与轧制公里数L。

[0129] 接着,在步骤33中,收集主要平整轧制工艺参数,主要是指平整的延伸率。

[0130] 随后,在步骤34中,调用相应的工作辊粗糙度模型,利用下式求出相应的工作辊表面粗糙度:

[0131] Ra r = Ra r 0 · e - B L · L - - - ( 58 )

[0132] 式(58)中,Ra r 为平整机工作辊表面粗糙度,Ra r0 为平整机工作辊原始粗糙度,L为工作辊换辊后的轧制公里数,B L 为工作辊粗糙度衰减系数。

[0133] 接着,在步骤35中,调平整机成品板面粗糙度预报模型。

[0134] 最后,在步骤36中,将平整带钢参数、工作辊特征参数、平整轧制工艺参数等代入平整机成品板面粗糙度模型,计...

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Abstract

The invention relates to a planisher product plate surface roughness forecast and control technology which comprises the following steps: a. establishing planisher working roller roughness and working roller initial roughness, drawing the mathematical model between the kilometers after changing the roller; b. constructing the function expression between the counter mark ratio Krs and the genetic ratio Kss; c. constructing the initial module of the planished product plate surface roughness; d. establishing the roughness forecast module of the special planisher by the on-site experiment data; e. online forecasting the product plate roughness by the plate surface roughness module; f. online controlling the product plate surface roughness.

Description

technical field [0001] The invention relates to a temper rolling technology, in particular to a technology for predicting and controlling the roughness of the finished plate surface of a temper machine. Background technique [0002] Surface roughness is one of the most important characteristics of flat finished strip steel. It not only affects the deformation behavior of the strip steel during stamping and the appearance after coating, but also can change the corrosion resistance of the material. Judging from the current quality development trend, the surface roughness control of strip steel has become an important quality index, especially for automobile sheets. How to establish a prediction model for surface roughness of the tempering machine, predict the surface roughness value of the strip to be produced, and finally achieve prior adjustment to avoid roughness out-of-tolerance has become the focus and difficulty of on-site technical research. For research in this area, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/00G05B13/04G05D5/00
Inventor 白振华周庆田
Owner YANSHAN UNIV
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