Continuous online coating and coiling process for color-coated steel coils

A color coating, steel coil technology, applied in the direction of winding strips, packaging, thin material processing, etc., can solve the problems of prone to heart roll, prone to collapse, film deformation, etc., to achieve good film effect and simple process Effect

Active Publication Date: 2012-11-07
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) In the film laminating process before coiling, the length of the ordinary color-coated plate is usually within 2 meters, so it can be cold-laminated piece by piece under static conditions, and the tension and pressure of the film are easy to control; the color-coated steel strip is usually as long as 1000 More than one meter, the maximum can reach 3000 meters, due to the limitation of the film lamination unit, production line and site, static film lamination cannot be carried out, so it is hoped to adopt the method of online continuous film lamination for cold film lamination, because the running speed of the conveyor belt will vary with the strip steel manufacturing process 1. The thickness of the strip fluctuates at any time. How to keep the tension of the film in the moving state of the color-coated strip to match the height of the moving tension of the color-coated strip running online is particularly important. If the tension of the film is too large, the film The force between the steel strip and the strip is too large, causing the film to be deformed or even broken; on the contrary, if the tension is too small, the film will loosen and produce defects such as small bubbles and various wrinkles on the surface of the color-coated steel strip. The film will be wrapped around the equipment along the way, causing the entire unit to stop running; 2) After coiling, due to the low friction coefficient of the surface due to the cold film, it is prone to collapse. In order to solve the problem of collapse, if the tension is increased blindly, then It is easy to deform the steel coil under pressure, and it is prone to the problem of heart coil; some enterprises such as Baosteel use vertical packaging and transportation after the coil is turned over to prevent the collapse of the coil, but this will increase the packaging and transportation costs of the steel coil. The logistics and transportation systems of many companies do not support the packaging and transportation solutions of vertical steel coils, which brings problems in the packaging and transportation of color-coated steel coils

Method used

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  • Continuous online coating and coiling process for color-coated steel coils
  • Continuous online coating and coiling process for color-coated steel coils
  • Continuous online coating and coiling process for color-coated steel coils

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The color-coated steel strip is sent through the conveyor belt to be pasted by the cold film, (strip width 1200mm, film thickness 0.06mm, film width 1202mm) the machine controls the pressure of the film roller on the cold film laminating machine at 9N / mm, and controls the film tension at 300- 400 Newtons, the pressure sensor is used to detect the film tension online in real time, and the information is sent to the tension controller. The tension controller converts, compares and judges the information, and then outputs the control signal to the core with the cold film roll on the cold film decoiler. The electronic braking device on the shaft controls the rotation speed of the mandrel (with cold film roll) through the electronic braking device. After testing, the film sticking effect is good, smooth and free of bubbles, and there is no deformation and wrinkle on the film surface.

Embodiment 2

[0031] Send the color-coated steel strip through the conveyor belt to the cold film laminating machine for film lamination (strip width 1100mm, film thickness 0.04mm, film width 1106mm), control the pressure of the film laminating roller on the cold film laminating machine at 11N / mm, and control the film tension at 60- 100 Newton, all the other are with embodiment 1. After testing, the film sticking effect is good, and there is no deformation and wrinkle on the film surface.

Embodiment 3

[0033] Send the color-coated steel strip through the conveyor belt to the cold film laminating machine for film lamination (strip width 1200mm, film thickness 0.08mm, film width 1204mm), control the pressure of the film laminating roller on the cold film laminating machine at 10N / mm, and control the film tension at 500- 600 Newton, all the other are with embodiment 1. After testing, the effect of the film is good, smooth and free of bubbles, and the film has no deformation and wrinkle problems.

[0034] Coiling Example

[0035] The color-coated steel strip after the cold film coating in Example 1 is sent to the coiler through the feeding roller to be coiled into a color-coated steel coil, and the specific parameters are controlled according to the different thicknesses of the steel strip as follows (wherein, refer to figure 1 , within 10cm of the inner circle is indicated as the distance of K-L, within 10-20cm of the inner circle is indicated as the distance of L-M, and if th...

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PUM

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Abstract

The invention relates to a continuous online coating and a coiling process for color-coated steel coils. The problems of defects such as deformations and small bubble folds in the continuous online coating process of the existing color-coated steel coils and collapsed coils or peach-heart coils easily produced in the coiling process are solved. Coating pressure and tension are effectively controlled, and different coiling unit tensions are selected at different coiling moments at the same time, so that problems can be effectively avoided. The continuous online coating and coiling process provided by the invention is simple has good coating effect, and can achieve continuous online cold coating of color-coated strip steel; problems of defects of pulled and deformed films or pulled and broken films or loosened films on the surface of the color-coated strip steel, small bubbles, various folds and the like are solved; the collapsed coils or the peach-heart coils can be avoided in the color-coated steel coils after the color-coated steel coils are coiled; and therefore horizontal type packaging and shipment standards are fully met.

Description

technical field [0001] The invention relates to a film-attaching process in the metallurgical industry, in particular to a continuous online film-attaching and coiling process for color-coated steel coils. Background technique [0002] Color-coated steel sheet (referred to as color-coated sheet) is an organic-coated steel sheet, also known as a pre-coated steel sheet. It is based on metal strip steel (such as cold-rolled steel sheet, hot-dip galvanized sheet, electro-galvanized sheet, etc.) through strict process control, and coated with various polymer coatings (such as polyester, silicone modified Polyester, polyvinylidene fluoride resin, polyvinyl chloride, acrylic resin, epoxy resin, etc.), and paste protective films of various plastic materials (such as polyvinyl chloride film, polyethylene film, etc.) in the final process - that is, The products made after cold laminating, as customers' usage of the products continue to increase, some new high value-added color-coated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65B33/06B65H26/04
Inventor 周小舟肖杰白俊刘海军黄渡华
Owner 武汉钢铁有限公司
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