Parameter setting and reeling method of thermal tandem rolling stainless steel band reeling equipment

A technology for stainless steel strips and coiling equipment, which is applied in the parameter setting of hot continuous rolling stainless steel strip coiling equipment and the field of coiling, can solve the problems of unstable incoming material width, easy edge folding, and low qualification rate. , to achieve the effect of reducing the number of times of coiling scrap

Active Publication Date: 2010-06-02
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the demands of the international and domestic steel markets, the applicant's variety structure has undergone significant changes, the proportion of stainless steel has increased year by year, and mass production of ≤ 3.0mm hot-rolled stainless steel strips, in order to build the world's most competitive stainless steel enterprise , the requirements for the quality of stainless steel products are constantly improving, but at present, in the production process of stainless steel, the appearance quality of coils is poor, especially in the actual production of 400 series stainless steel, there are many surface and appearance quality problems, mainly stainless steel. The running speed on the G roller table (heat output roller table) is high, the plate shape of the head is unstable, swings from side to side, sometimes to the working sid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0121] After the above settings are made to the equipment, 304 stainless steel with a thickness d of 3.0mm can be coiled. This embodiment includes the following steps in sequence:

[0122] a delivery

[0123] a. When the steel strip head passes through six sets of roller tables at a speed of 9m per second from the last stand of the finishing mill, the first group of roller tables, the second group of roller tables, the third group of roller tables, the fourth group of roller tables, and the fifth group of roller tables The advanced conveying speeds of the road and the sixth group of roller tables (the speed exceeding the last stand of the finishing mill) are 11.07m, 11.16m, 11.34m, 11.61m, 11.79m and 11.97m rotations per second respectively.

[0124] b When the steel belt passes through the side guide plate, the pressure coefficient of the side guide plate: 0.5~0.8, and the added value of the side guide plate is 0~+15mm.

[0125] c When the steel strip head passes through th...

Embodiment 2

[0145] In this embodiment, Ni-based stainless steel 304 is coiled, the thickness d is 6.0mm, and the width is 1250mm. The coiling step is the same as that of Example 1.

[0146] The above four embodiments are applicable to Ni-based stainless steels 321, 316 and 316L. The setting of coiling parameters and coiling steps are the same as those of 304 with the same thickness.

Embodiment 3

[0150] In this embodiment, Cr-based stainless steel 430 is coiled, the thickness d is 3.0 mm, and the width is 1250 mm. The coiling step is the same as that of Example 1.

[0151] The third embodiment of setting parameters and the steel strip coiling embodiment three are applicable to Cr-based stainless steel 436, 443 and 409, and the setting of coiling parameters and coiling steps are the same as those of 430 with the same thickness.

[0152] In this application document:

[0153] The percentage of total lead rate and lag rate is a percentage value determined based on the rolling speed of the last stand of finish rolling.

[0154] The total advance rate of the roller table is the percentage of the linear speed when the roller table rotates before coiling, that is, the advanced conveying speed, to the rolling speed of the final stand of the finish rolling.

[0155] The hysteresis rate of the roller table is the percentage of the linear speed when the roller table rotates dur...

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PUM

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Abstract

The invention relates to a parameter setting and reeling method of thermal tandem rolling stainless steel band reeling equipment. The method sets the following parameters: an advance speed set value of each sets of roller ways=a final finish rolling frame speed set value*(a total roller way advance rate+a corresponding grouped advance rate); a lagged set speed value of each sets of roller ways=a final finish rolling frame speed set value*a roller way lagged rate; the setting of the openness of a side guide plate; the pressure coefficient of the side guide plate of 0.5-0.8; the added value of the side guide plate of 0 to +15mm; and the settings of a pinch roll: calibration of the pinch roll of the reeling machine by guaranteeing normal calibration, the advance rate and the lagged rate of the pinch roll, the pressure coefficient of the pinch roll, the diameter of an upper roll of the pinch roll of the reeling machine, and the diameter of a lower roll of the pinch roll of the reeling machine. In the reeling method, a computer controls reeling equipment to reel according to the set parameters. The parameter setting and reeling method of thermal tandem rolling stainless steel band reeling equipment improves the appearance and surface quality of steel rolls.

Description

technical field [0001] The present invention relates to the parameter setting and coiling method of a hot continuous rolling stainless steel strip coiling equipment, specifically, it is the parameter setting of the relevant main equipment when the hot continuous rolling mill is coiling the hot rolled steel strip, the parameter The method of coiling the hot-rolled steel strip after setting. Background technique [0002] With the demands of the international and domestic steel markets, the applicant's variety structure has undergone significant changes, the proportion of stainless steel has increased year by year, and mass production of ≤ 3.0mm hot-rolled stainless steel strips, in order to build the world's most competitive stainless steel enterprise , the requirements for the quality of stainless steel products are constantly improving, but at present, in the production process of stainless steel, the appearance quality of coils is poor, especially in the actual production o...

Claims

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Application Information

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IPC IPC(8): B21C47/04
Inventor 陈欣
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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