Rolling pressure setting method of precision rolling phase-change strip steel

A technology of rolling pressure and strip steel, applied in the field of setting rolling pressure, can solve the problems of inconvenient use, increase of test cost, influence of rolling stability, etc.

Active Publication Date: 2012-08-22
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) The continuity problem of the three-stage expression at the transfer point is not solved. When the temperature of the finishing stand fluctuates just near the transfer point, there will be a relatively large deviation in the setting of the rolling force, wh

Method used

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  • Rolling pressure setting method of precision rolling phase-change strip steel
  • Rolling pressure setting method of precision rolling phase-change strip steel
  • Rolling pressure setting method of precision rolling phase-change strip steel

Examples

Experimental program
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Example Embodiment

[0055] For the non-oriented silicon steel tapping mark IW9222E1, according to the data shown in Table 1, set the rolling pressure under the F1 stand to the F7 stand, and obtain the rolling pressure data shown in Table 1.

[0056] Table 1 Data related to rolling pressure setting

[0057]

[0058](Inlet thickness of strip steel finishing rolling is 49.12mm, width is 1264.19mm, h is the outlet thickness of strip steel in each stand)

[0059] like figure 1 As shown, set the rolling pressure according to the following steps (the relevant data in the setting process of the rolling pressure of the F1 stand to the F7 stand are shown in Table 1):

[0060] (1) start;

[0061] (2) Judging whether the strip steel has undergone phase transformation in the finishing stand, if no phase transformation has been invented, the influence term of the deformation temperature in the austenite region on the deformation strength is calculated according to the existing method only considering the ...

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Abstract

The invention discloses a rolling pressure setting method of precision rolling phase-change strip steel; and a formula for calculating the impact of temperature on deformation strength is set up by considering the volume fraction of rolled piece austenitic deformation and ferrite deformation, so that the rolling pressure setting precision of phase-change strip steel in a two-phase area and a ferrite area is significantly improved, and the purposes of improving the strip steel thickness control precision and production stability are achieved. According to the technical scheme, because a phase-change volume fraction calculation model in a cosine form and a deformation strength impact calculation formula in a weighted form are adopted in the double-phase area, the deformation characteristic of a rolled piece in the double-phase area can be better simulated, so that the matching with an actual rolling result is very high.

Description

technical field [0001] The invention relates to a strip rolling method, in particular to a method for setting rolling pressure in the strip rolling process. Background technique [0002] In the hot-rolled strip production process, the setting model of the finishing mill is the main part of the core technology. For a long time, improving the accuracy of the setting model of the finishing mill has been the main direction of research. The accuracy of the strip head and tail thickness mainly depends on the accuracy of the rolling pressure setting in the finishing mill setting. Therefore, in order to meet the increasing dimensional accuracy requirements of users, it is necessary to improve the flexibility and accuracy of the finishing mill setting, and the rolling pressure setting is the core of the computer setting model of the hot continuous rolling finishing mill, and its prediction accuracy It directly affects the setting of the roll gap and affects the stability of the bel...

Claims

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Application Information

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IPC IPC(8): B21B37/58
Inventor 李维刚张健民祝孔林张勇
Owner BAOSHAN IRON & STEEL CO LTD
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