Plate shape control method of hot rolling thin checkered plates

A plate shape control and pattern plate technology, applied in the field of steel rolling, can solve the problems of no involvement, and achieve the effect of improving high quality, considerable economic benefits, and improving product quality

Inactive Publication Date: 2010-06-02
SHOUGANG CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there is no technology related to the shape control of hot continuous rolling mills rolling thin-gauge checkered plates

Method used

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  • Plate shape control method of hot rolling thin checkered plates
  • Plate shape control method of hot rolling thin checkered plates
  • Plate shape control method of hot rolling thin checkered plates

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] Shougang Qiangang’s 2160mm hot-rolled wide-band steel production line was put into operation at the end of 2006, and began to produce hot-rolled checkered plates in early 2009. In the initial stage of checkered plate production, the main problems were:

[0052] 1) The thin specifications of checkered plates are mostly in the shape of medium waves during the rolling process, and the waves are relatively large;

[0053] 2) Since the support roll of the end frame adopts the CVC roll shape, there is a poor transition between the edge chamfer and the curve of the roll body, so the width specification of the checkered plate cannot be greater than 1600mm.

[0054] The plate shape data of the rolled checkered plate with a thickness less than or equal to 2.5mm was counted, and the results are as follows Figure 4 , Figure 5 , Image 6 and Figure 7 shown. Since the flatness testing instrument on the 2160mm hot rolling production line of Shougang Qiangang adopts the average ...

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Abstract

The invention relates to a plate shape control method of hot rolling thin checkered plates. Process characteristics and a thermal crown value are established according to the working thermal crown of a tail frame of a finishing mill group, a checkered roller is used as an upper working roller, and a negative convexity roller form within the range of 0.05-0.15mm is used as a lower working roller and paired with the checkered roller for use, wherein the checkered roller is of a plain roller form, and a 6-power multinomial roller form is used as a supporting roller. The method solves the problems of severe middle wavy defects caused by large roller convexity of a rolled thin checkered plate when the working roller with a plain roller form is paired with the checkered roller, scratches of the edge of the checkered roller and local slow peeling because of non-uniform chamfer transition of the edge of a CVC supporting roller form, inability of rolling wide checkered plates and insufficient height of the edge of the rolled checkered plate.

Description

technical field [0001] The invention belongs to the technical field of steel rolling, and in particular relates to a method for controlling the shape of hot-rolled thin-gauge patterned plates. Background technique [0002] The steel plate with patterns on the surface is beautiful, can increase friction, strengthen performance, and save steel, and has been widely used in construction, shipbuilding, transportation, and machinery manufacturing industries. Checkered plate is a kind of non-slip steel plate widely used in construction, transportation and public places. There are many specifications in GB709-88, and its thickness is 1.5mm to 12.7mm. Hot tandem rolling mill rolling is the main process of producing checker plate. Thin-gauge checkered plates for construction and machinery manufacturing can replace thick-gauge flat plates, and can save a lot of steel. The pattern of the lentil-shaped checkered plate is an open shape, and it is the most widely used checkered plate at ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/30B21B27/02
Inventor 王晓东李飞朱国森李本海李明李彬余威张宝辉董佳彬马耀峰
Owner SHOUGANG CORPORATION
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