Method for coiling hot continuous rolling high-intensity medium plate

A hot continuous rolling, high-strength technology, which is applied in the coiling field of hot continuous rolling high-strength medium and heavy plates, can solve problems such as production instability of medium and heavy plates, surface defect appearance quality, etc. The effect of stabilizing factors and saving quality cost

Inactive Publication Date: 2009-05-27
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of coiling technology for high-strength medium and heavy plates in some production lines, the production of medium and heavy plates is unstable and a large amount

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The lead rate and lag rate of the roller table should be properly adjusted according to the production situation to prevent the strip from sheathing and tail edge out. The additional pressure value of the side guide plate has an important influence on the control of defects such as edge damage. If the side guide plate is severely worn, it should be replaced or dealt with in time. The size of the pressure correction value and the additional value are related to the width of the strip. Always observe the contact between the strip steel and the side guide plate, and keep the side guide plate in contact with the strip steel, and it is better to have less sparks. At the same time, observe the coil shape of the strip steel and the feedback value of the side guide pressure, and adjust it in time. The adjustment standard generally maintains the fluctuation of the pressure at 20-30KN, which is the ideal state. Failure to hold the strip produces delamination.

[0027] According ...

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PUM

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Abstract

The invention provides a coiling method of a hot continuous rolled medium plate with high strength which is applied to the production of the hot continuous rolled medium plate that has the characteristics of hard material, thick specification, high strength, etc. The invention aims at eliminating unstable factors of the medium plate during the rolling and lowering surface defects of the plate. The coiling method carries out the arrangement and the regulation of parameter control according to a hot continuous rolled coiling machine group, comprising setting the speed of a G roller, selecting proper leading rate and lag rate of the roller, selecting pressure coefficients, regulating laterally guided pressure coefficients and calibrating pressure coefficients of pinch rolls; controlling currents and negative currents of up and lower pinch rolls and setting the clearance between wrapper rolls and opening distance parameters; ensuring the tension added value of a drum and the current ratio.

Description

technical field [0001] The invention relates to a coiling method for a hot continuous rolling high-strength medium-thick plate. Background technique [0002] The hot-rolled coils with a thickness greater than 6mm in hot rolling mills are customarily called medium and heavy plates. With the increase of output, plate coiling technology has become a weaker link in the hot rolling production line. Due to the lack of coiling technology for high-strength medium and heavy plates in some production lines, the production of medium and heavy plates is unstable and a large amount of scrap steel is produced. At the same time, with the change of product specifications, many surface defects have appeared in actual production. and appearance quality problems. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a coiling method for hot continuous rolling high-strength medium-thick plate tha...

Claims

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Application Information

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IPC IPC(8): B21C47/02
Inventor 陈欣李彦芳
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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