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Tension distribution setting method in steel belt asynchronous cold continuous rolling process

A setting method, cold continuous rolling technology, applied in the field of rolling production, to achieve the effect of high calculation accuracy

Pending Publication Date: 2020-12-25
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In summary, the above-mentioned patents provide a tension distribution setting method for the conventional rolling process, but there is no report on the tension distribution setting method for the asynchronous continuous cold rolling process of the steel strip.

Method used

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  • Tension distribution setting method in steel belt asynchronous cold continuous rolling process
  • Tension distribution setting method in steel belt asynchronous cold continuous rolling process
  • Tension distribution setting method in steel belt asynchronous cold continuous rolling process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Taking the 2150mm five-stand six-high tandem cold rolling unit as an example, the working roll diameter of the unit is 430-570mm, the middle roll diameter is 580-650mm, the support roll diameter is 1325-1485mm, and the maximum rolling force of the unit is 32MN. Set the tension before the first stand of steel strip asynchronous continuous cold rolling. Among them, the chemical composition of the steel strip by weight percentage (≤, %) is: C: 0.15, Si: 0.63, Mn: 1.66, Cr: 0.57, P: 0.014, S: 0.008, the asynchronous ratio is 1.3, and the rolling speed is v u = 1.8m / s, v b =2.34m / s, the hot-rolled raw material is 4mm, the thickness of the entrance of the first frame is 4mm, and the thickness of the exit of the first frame is 2.8mm.

[0036] (1) Using the experimental cold rolling mill, the steel strip material samples are 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65% %, 70%, 75%, 80%, 85%, 90% reduction rate for cold rolling, the cold rolling rolling speed is...

Embodiment 2

[0048] Taking the 2150mm five-stand six-high tandem cold rolling unit as an example, the working roll diameter of the unit is 430-570mm, the middle roll diameter is 580-650mm, the support roll diameter is 1325-1485mm, and the maximum rolling force of the unit is 32MN. Set the front tension of the second stand of steel strip asynchronous continuous cold rolling. Among them, the chemical composition of the steel strip by weight percentage (≤, %) is: C: 0.20, Si: 1.82, Mn: 2.43, Cr: 0.11, P: 0.014, S: 0.004, the asynchronous ratio is 1.18, and the rolling speed is v u = 4.1m / s, v b =4.84m / s, hot-rolled raw material 3mm, entrance thickness 2.1mm, exit thickness 1.3mm.

[0049] (1) Using the experimental cold rolling mill, the steel strip material samples are 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65% %, 70%, 75%, 80%, 85%, 90% reduction rate for cold rolling, the cold rolling rolling speed is 5m / s. The room temperature uniaxial tensile test was carried out on t...

Embodiment 3

[0061] Taking the 2150mm five-stand six-high tandem cold rolling unit as an example, the working roll diameter of the unit is 430-570mm, the middle roll diameter is 580-650mm, the support roll diameter is 1325-1485mm, and the maximum rolling force of the unit is 32MN. Set the front tension of the fourth stand of steel strip asynchronous continuous cold rolling. Among them, the chemical composition of the steel strip by weight percentage (≤, %) is: C: 0.15, Si: 0.7, Mn: 0.8, Ni: 0.35, P: 0.04, S: 0.03, the asynchronous ratio is 1.07, and the rolling speed is v u =5m / s, v b =5.35m / s, hot-rolled raw material 3.5mm, entrance thickness 1.2mm, exit thickness 0.8mm.

[0062] (1) Using the experimental cold rolling mill, the steel strip material samples are 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65% %, 70%, 75%, 80%, 85%, 90% reduction rate for cold rolling, the cold rolling rolling speed is 3m / s. The room temperature uniaxial tensile test was carried out on the ex...

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Abstract

The invention belongs to the technical field of rolling production, particularly relates to a tension distribution setting method in the steel belt asynchronous cold continuous rolling process, and solves the problem that a mathematical model and a calculation method for tension distribution in the asynchronous cold continuous rolling process are lacked in the prior art. The method includes: obtaining a regression coefficient related to a steel strip material in the cold continuous rolling deformation resistance mathematical model according to a conventional rolling experiment, and calculatinga tension distribution set value according to parameters such as the radius of a roller at each rack, the linear speed of the roller and the thickness of the strip before and after rolling in the cold continuous rolling process and the regression coefficient, so as to achieve the purposes of accurately setting tension parameters in the steel belt asynchronous rolling process, adjusting loads of all racks and stabilizing the rolling process.

Description

technical field [0001] The invention belongs to the technical field of rolling production, and in particular relates to a method for setting tension distribution in a steel strip asynchronous continuous cold rolling process. Background technique [0002] Tension rolling is the main feature of the tandem cold rolling process. The main functions of tension are: to prevent the strip from running off during rolling; to keep the strip in good shape; to reduce the rolling force to facilitate the rolling of thinner strips; to properly adjust the load of the main motor. In order to accurately set the parameters of the steel strip asynchronous rolling process, it is urgent to establish a tension distribution setting method for the steel strip asynchronous tandem cold rolling process. [0003] The Chinese invention patent with application number 201910642699.4 discloses "a continuous rolling method with tension of high silicon steel". A thin strip of high silicon steel with a thickn...

Claims

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Application Information

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IPC IPC(8): G06F17/18B21B37/48
CPCG06F17/18B21B37/48
Inventor 李长生王煜金鑫陈亚飞李恩
Owner NORTHEASTERN UNIV
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