Improved method for stretching straightening of strip steel cold rolling and pickling

A technology of stretching straightening machine and strip steel, applied in the direction of metal rolling, metal rolling, manufacturing tools, etc., can solve the problems of insufficient pickling, large consumption of rolls, and extension of straightening rolls, etc., to improve quality and production Efficiency, uniform wear, and extended service life

Active Publication Date: 2021-04-20
BENGANG STEEL PLATES +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0019] The invention provides an improved method for stretching and straightening of cold-rolled pickled strip steel, which solves the above-mentioned concentrated wear problem, thereby solving the problem of und

Method used

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  • Improved method for stretching straightening of strip steel cold rolling and pickling
  • Improved method for stretching straightening of strip steel cold rolling and pickling
  • Improved method for stretching straightening of strip steel cold rolling and pickling

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Example Embodiment

[0051]An improved method of tensile straightening of cold-rolled acid washing steel, using a tensile straightener to complete stretching, including the following steps:

[0052](1) such asFigure 6 As shown, the upper working roller 301 and the lower working roller 302 of the stretching challenge 3 are changed from the flat roller to a tapered roller, and the diameter ends at both ends of the working roll is 80 mm, and the other end is 78 mm, and a spiral effect is applied to ensure the work roller. The landscape movement, the same unit, the upper, lower working roller head, which is relatively opposite, such an arrangement is to produce the balance of the strip steel 1 and the working roller; 1 # unit, the lower working roller On the opposite, on the 2 # unit, the lower working roller is relatively, such an arrangement is to ensure a uniform extension in the width direction when the belt steel 1 is bonded by the tensile straightening machine 3.

[0053](2)Figure 7 The string roller shown:...

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Abstract

The invention relates to the field of cold rolling and pickling processes, in particular to an improved method for stretching straightening of strip steel cold rolling and pickling. According to the method, an existing stretching straightener is improved to enable an upper roller and a lower roller to reciprocate in the width direction of strip steel when the strip steel runs, so that the edge of the strip steel passes through all parts within the effective length of the rollers. Therefore, uniform abrasion of a working roll is achieved, the problem of concentrated abrasion is solved, the problems of insufficient acid pickling and plate shape defects caused by non-uniform extension are solved, the online service life of a straightening roll is prolonged, and the problem of high consumption of the roll caused by concentrated abrasion is solved.

Description

technical field [0001] The invention relates to the field of cold-rolled pickling technology, in particular to an improved method for stretching and straightening cold-rolled pickled strip steel. Background technique [0002] In the pickling process of cold-rolled strip production, the principle of reaction between hydrochloric acid and iron oxide is used to remove the oxide scale on the surface of the hot-rolled strip, so that the strip enters the cold-rolling mill with a silver-white iron matrix surface for rolling. Modern cold-rolled In the production of strip steel, the hot-rolled strip steel before entering the pickling tank is descaled by stretching and leveling machine, as shown in the attached figure 1 As shown, it shows the positional relationship between the stretch leveler and the pickling tank in the pickling process. The function of the stretch leveler is first to break the scale, so that many fine cracks are formed on the iron oxide scale on the surface of the...

Claims

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Application Information

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IPC IPC(8): B21B15/00B21B45/06
Inventor 王金鹏张勇吴长发付中华顾忠帅于世练
Owner BENGANG STEEL PLATES
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