Production device for minimized spangle on surface of cold-rolled steel sheet

A technology for cold-rolled steel sheets and production equipment, applied in coating, metal material coating technology, hot-dip galvanizing technology, etc., can solve the problems of irregular surface of cold-rolled steel sheets, uneven spangles, spangles, etc., and achieve reduction The effect of production cost, stable production operation and quality improvement

Inactive Publication Date: 2014-10-15
BAOSTEEL IND FURNACE ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has the following disadvantages. Because the nozzle is blocked or damaged, it is easy to cause local uneven spangles; the spray medium does not reach a good atomization state, and it is easy to cause irregular spangles on the surface of the cold-rolled steel plate; The maximum distance between the rolled steel sheets is not reached, and it is easy to cause large spangle structures and small spangle structures on the surface of cold-rolled steel sheets to cover the entire surface at regular intervals in the width direction

Method used

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  • Production device for minimized spangle on surface of cold-rolled steel sheet
  • Production device for minimized spangle on surface of cold-rolled steel sheet

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Embodiment Construction

[0016] Such as figure 1 with figure 2 As shown, the small spangle production device on the surface of the cold-rolled steel sheet of the present invention includes an air knife 2 and a post-plating cooling bellows 3 positioned at the top of the zinc pot 1 at intervals in sequence, and also includes an air spray box 4 and a fan 5, and the fan 5 passes through the pipeline. 6 is connected to the air spray box 4, and the air spray box 4 is arranged between the air knife 2 and the post-plating cooling wind box 3 and symmetrically arranged on both sides of the cold-rolled steel plate 7.

[0017] Further, the distance between the bottom of the air spray box 4 and the zinc liquid surface 11 of the zinc pot 1 is 1000-2300mm, and the distance between the top of the air spray box 4 and the post-plating cooling bellows 3 is 100-2000mm. The distance between the spout of the spray box 4 and the surface of the cold-rolled steel plate 7 is 60-300mm.

[0018] Further, the temperature of th...

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Abstract

The invention discloses a production device for minimized spangles on a surface of a cold-rolled steel sheet. The device comprises an air knife above a zinc pot and air spray tanks positioned between the air knife and a cooling-after-plating bellows, and a fan; the fan is connected with the air spray tanks through pipelines; the air spray tanks are arranged between the air knife and the cooling-after-plating bellows and are symmetrically distributed at two sides of the cold-rolled steel sheet. The device overcomes the defect of the traditional production of minimized spangles on the surface of the cold-rolled steel sheet, so that the minimized spangles on the surface of the cold-rolled steel sheet are uniformly distributed; and the production is stable, has reduced production cost, and improves the quality of minimized spangle cold-rolled steel sheet products.

Description

technical field [0001] The invention relates to a small spangle production device on the surface of a cold-rolled steel plate. Background technique [0002] Galvanized and galvanized cold-rolled steel sheets are widely used in construction, light industry and other industries. After galvanized or galvanized, the surface of cold-rolled steel sheets has beautiful spangles. The industry’s continuous demand for galvanized cold-rolled steel products, the large spangles on the surface of cold-rolled steel sheets are still partially exposed after painting, which affects the appearance of the final product, so the production of small spangled cold-rolled steel products is becoming more and more more attention. [0003] At present, the production of small spangles on the surface of cold-rolled steel sheets mainly adopts two methods: [0004] (1) Increase the number of crystals on the surface of the zinc layer of the cold-rolled steel sheet, so that a large number of crystals grow s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/26C23C2/06
Inventor 王林建谷硕蒋彦军刘义平
Owner BAOSTEEL IND FURNACE ENG TECH
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