Flattening process for steel strip

A flat and strip steel technology, applied in the field of steel processing, can solve problems such as the inability to guarantee the shape of the plate and the inability to guarantee the mechanical properties.

Active Publication Date: 2006-10-04
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0009] In addition, countries in the world have not yet been able to make the mechanical properties and shape of the strip steel good at the same time, but products with high requirements on the shape of the strip (such

Method used

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  • Flattening process for steel strip
  • Flattening process for steel strip
  • Flattening process for steel strip

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Embodiment Construction

[0056] The leveling process of strip steel of the present invention can be further described as follows:

[0057] 1. Optimized design of smoothing roll shape:

[0058] Generally, the range of steel strip varieties and specifications to be produced by the hot-dip galvanizing line is relatively wide, while the shape control means of the skin-pass mill are very limited. Practice has shown that even if the leveling parameters of each specification are optimized with the goal of the best export plate shape, the following situations still often occur:

[0059] A. Since the optimum bending force of certain specifications of strip steel is outside the range of bending force that can be provided by the bending system of the skin pass mill, no matter how the bending force is adjusted during online control, the exit shape will not be good.

[0060] B. Although the optimum bending force of certain specifications of strip steel is within the range of bending force that the skin-pass bendi...

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Abstract

The invention discloses a belt steel flattening craft, which is comprised the following parts: flattening roll roll-shape optimization design, flattening processing parameter optimization design initialization and elongation and slab-shaped composite optimization control, therein the craft doesn't need to draft flattener, which can guarantee export belt steel board mold and mechanical property on one common planisher; the invention is fit for hot-dip coating zinc units and annealed flattening; the belt steel slab-shaped guarantee value is 4-6T; the hit ratio is more or equal to 97%; the elongation control accuracy is smaller or equal to +-0.1%.

Description

technical field [0001] The invention relates to a steel processing method, in particular to a strip steel smoothing process. Background technique [0002] Leveling is to roll the strip steel after recrystallization annealing with a small amount of deformation (elongation is generally 0.2% to 3%) to eliminate the yield platform, ensure mechanical properties, control the shape of the plate, and obtain the required surface Morphology of the rolling process. Regardless of the traditional or modern cold rolling process, leveling is one of the essential production links. Since leveling is the last process that determines the shape and mechanical properties of the finished strip, it is of great significance to ensure the quality of cold-rolled strip. [0003] At present, the leveling function of the hot-dip galvanizing line is jointly completed by the skin pass machine and the stretching bending leveler. The main function of the skin pass machine is to improve the mechanical prop...

Claims

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Application Information

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IPC IPC(8): B21D1/02
Inventor 杨美顺顾廷权陈培林
Owner BAOSHAN IRON & STEEL CO LTD
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