Method for machining hot-dipped galvanized steel sheet having two faces with different types of spangles

A technology of hot-dip galvanized steel sheet and processing method, applied in hot-dip galvanizing process, metal processing equipment, manufacturing tools, etc., to achieve the effect of reducing cost

Active Publication Date: 2009-10-14
CHANGSHU HUAYE STEEL STRIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The applicant also believes that, so far, neither the technical revelation of the processing method of hot-dip galvanized steel sheets with different types of spangles on both sides has been seen in the literature, nor the corresponding reports of success in the industry have been heard. That is because Manufacturers engaged in hot-dip galvanized steel sheets are deeply rooted under the influence of traditional design thinking and production methods, lest they go against the public

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  • Method for machining hot-dipped galvanized steel sheet having two faces with different types of spangles
  • Method for machining hot-dipped galvanized steel sheet having two faces with different types of spangles
  • Method for machining hot-dipped galvanized steel sheet having two faces with different types of spangles

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Embodiment 1

[0019] please see Figure 1 to Figure 4 .

[0020] The method of the present invention includes rolling the substrate 7, cleaning with a cleaning tank 9, annealing in an annealing furnace 10, galvanizing with a zinc pot 11, and smoothing with a skin pass machine 12, thereby obtaining hot-dip galvanizing with different types of spangles on both sides Zinc steel. As the technical gist of the inventive method: for upper and lower work rolls 5,6 ( figure 2 shown) to carry out texturing treatment on the surface so that the surfaces of the upper and lower work rolls 5 and 6 each form a textured surface structure, specifically: use CO 2 Laser texturing technology for texturing treatment, the preferred texturing treatment equipment is the HGL-HAT3500 large-scale roll laser texturing complete set of equipment produced by Wuhan Huagong Laser Engineering Co., Ltd. in Wuhan City, Hubei Province, China. It adopts high-energy, high-repetition frequency of pulsed CO 2 After the laser be...

Embodiment 2

[0028] please see Figure 1 to Figure 4 .

[0029] The method of the present invention includes rolling the substrate 7, cleaning with the cleaning tank 7, annealing in the annealing furnace 10, galvanizing with the zinc pot 11 and smoothing with the skin pass machine 12, thereby obtaining a hot-dip galvanized steel sheet with different types of spangles on both sides . In this embodiment, the roughness of the surface of the upper work roll 5 is controlled to be 2.1 μm, and the number of bosses on the surface of the upper work roll 5 is set to 20 / mm 2 The diameter of the bosses on the surface of the upper work roll 5 is controlled to be 200 μm, and the center distance between adjacent bosses is 45 μm; the roughness of the surface of the lower work roll 6 is controlled to be 0.9 μm, and the number of bosses on the surface of the lower work roll 6 is set to 8 piece / mm 2 , the diameter of the bosses on the surface of the lower work roll 6 is controlled to be 100 μm, and the ce...

Embodiment 3

[0035] please see Figure 1 to Figure 4 .

[0036] The method of the present invention includes rolling the substrate 7, cleaning with the cleaning tank 7, annealing in the annealing furnace 10, galvanizing with the zinc pot 11 and smoothing with the skin pass machine 12, thereby obtaining a hot-dip galvanized steel sheet with different types of spangles on both sides . In this embodiment, the roughness of the surface of the upper work roll 5 is controlled to be 1.5 μm, and the number of bosses on the surface of the upper work roll 5 is set to 15 / mm 2 , the diameter of the bosses on the surface of the upper work roll 5 is controlled to be 155 μm, and the center distance between adjacent bosses is 20 μm; the roughness of the surface of the lower work roll 6 is controlled to be 0.6 μm, and the number of bosses on the surface of the lower work roll 6 is set to 5 piece / mm 2 , the diameter of the bosses on the surface of the lower work roll 6 is controlled to be 52 μm, and the c...

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Abstract

The invention relates to a method for machining a hot-dipped galvanized steel sheet having two faces with different types of spangles, belonging to the technical field for machining hot-dipped galvanized steel sheet. The method comprises the steps of rolling a base plate, washing, annealing, zinc boiler galvanizing and skin rolling. The method is characterized in that the surfaces of an upper working roll and a lower working roll for rolling the base plate in the step of rolling are processed in a way of roughening so that the surfaces of the upper working roll and the lower working roll are respectively form a roughened surface structure; the roughened surface structure on the upper working roll is different from the roughened surface structure on the lower working roll; when the upper working roll and the lower working roll with the roughened surface structures roll the base plate, the two faces of the base plate are respectively form the roughened surface structure of the base plate, wherein, the roughened surface structure of the base plate formed at one face of the base plate is different from the roughened surface structure of the base plate formed at the other face of the base plate. The method is good for saving zinc raw materials and reducing cost for manufacturers and is helpful for users to elect according to use and request.

Description

technical field [0001] The invention belongs to the technical field of hot-dip galvanized steel sheet processing, and in particular relates to a processing method of a hot-dip galvanized steel sheet with different types of spangles on both sides. Background technique [0002] As is well known in the industry, there are mainly but not limited to the following two types of manifestations of the two surfaces of the hot-dip galvanized steel sheet. One is the hot-dip galvanized sheet with spangles on both surfaces of the sheet ; The other is a hot-dip galvanized steel sheet with spangles on one side of the board and one side that is not galvanized. The former is widely used in industries such as home appliances, construction, solar energy, automobiles and decoration, while the latter is mainly used in occasions without decoration requirements or appearance requirements, such as processing various containers and so on. The former is divided into two types, one is that both surfac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P23/04B21B1/22B21B28/02B21B27/00C21D1/26C23C2/06
Inventor 杭永海张洵许秀飞
Owner CHANGSHU HUAYE STEEL STRIP
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