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Zn-Al-Si-Mn-Bi-Ti-Ce alloy for hot dip plating and use method therefor

A hot-dip plating and alloy technology, applied in hot-dip plating process, metal material coating process, coating and other directions, can solve the problem of super-thick coating, improve corrosion resistance, refine coating structure, and reduce production costs Effect

Inactive Publication Date: 2020-09-29
HUIBO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of Zn-Al-Si-Mn-Bi-Ti-Ce alloy and hot-dip plating method thereof for hot-dip plating, aim to solve the corrosion resistance of alloy coating, and in the hot-dip plating process due to The violent reaction of Zn-Fe and Al-Fe causes the problem of super thick coating. The specific way is to add more effective alloying elements in the alloy, suppress the reaction speed of Zn-Fe and Al-Fe, refine the coating structure, reduce The thickness of the coating can save production costs and produce zinc-aluminum alloys with better corrosion resistance

Method used

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  • Zn-Al-Si-Mn-Bi-Ti-Ce alloy for hot dip plating and use method therefor

Examples

Experimental program
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Embodiment 1

[0019] A Zn-Al-Si-Mn-Bi-Ti-Ce alloy for hot-dip plating, the composition of which is calculated according to mass percentage, Al 45wt.%, Si 0.3wt.%, Mn 0.15wt.%, Bi 0.3wt.% , Ti 0.075wt.%, Ce 0.075wt.%, the rest is Zn.

[0020] The specific steps of the hot dip coating method for preparing the above-mentioned coating are as follows:

[0021] (1) Pretreatment before plating: First, the steel plate is degreasing treatment, using 5wt.% NaOH as the degreasing agent, degreasing treatment at 80 ℃, until the steel plate is washed with water without water droplets, and then through 60 ℃ hot water and Two washing processes in cold water at 20°C, and then pickling with 5wt.% HCl to remove rust, and then electro-galvanizing with electrolytic boosting process, and then drying in a drying oven at 100°C to prepare for hot dip plating;

[0022] (2) Hot-dip plating process: Put the pre-melted Zn-Al-Si-Mn-Bi-Ti-Ce alloy into the graphite crucible under the galvanizing simulation device, and the allo...

Embodiment 2

[0026] The difference from Example 1 is that the composition of the coating is as follows: Al 35wt.%, Si 0.20wt.%, Mn0.05wt.%, Bi 0.10wt.%, Ti 0.03wt.%, Ce 0.05wt.%, and the rest are Zn.

Embodiment 3

[0028] The difference from Examples 1 and 2 is that the composition of the coating is as follows: Al 55wt.%, Si 0.4wt.%, Mn0.25wt.%, Bi 0.5wt.%, Ti 0.12wt.%, Ce 0.1wt.%, The rest is Zn.

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Abstract

The invention discloses a Zn-Al-Si-Mn-Bi-Ti-Ce alloy for hot dip plating and a use method therefor, and belongs to hot dip plating. The alloy is characterized by comprising the following components of, in percentage by mass, 35 wt.%-55 wt.% of Al, 0.20 wt.%-0.40 wt.% of Si, 0.05 wt.%-0.25 wt.% of Mn, 0.10 wt.%-0.50 wt.% of Bi, 0.03 wt.%-0.12 wt.% of Ti, 0.05 wt.%-0.10 wt.% of Ce, and the balance Zn. The alloy has the following technical effects that after Mn, Bi, Ti and Ce are added, grains can be refined, the fluidity of a plating solution is improved, the Sandelin effect is inhibited, and the Zn-Fe reaction is inhibited. According to a plating layer obtained by using the alloy, the corrosion resistance rate thereof is reduced by 16 times or so as compared to a Galfan plating layer.

Description

Technical field [0001] The invention belongs to the technical field of hot-dip plating, and particularly relates to a Zn-Al-Si-Mn-Bi-Ti-Ce alloy for hot-dip plating and a method of use during hot-dip plating. Background technique [0002] Hot-dip galvanizing refers to immersing the steel material whose surface has been cleaned, activated and other pre-treatments in molten zinc or its alloy liquid. The reaction between the steel material matrix and the zinc liquid or its alloy liquid will form on the surface of the steel substrate. The process of metal film that is firmly bonded to the substrate and has certain corrosion resistance. [0003] Hot-dip galvanized aluminum coating is a widely used coating, which takes into account the durability of aluminum and the anodic protection of zinc. The overall performance of the coating is better than that of pure zinc coating. With the increase of aluminum content, the corrosion resistance of the coating will be significant To improve, for e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22C18/04C23C2/02C23C2/06C23C2/12C25D3/56
CPCC22C21/10C22C18/04C23C2/06C23C2/12C23C2/02C25D3/565
Inventor 杨建辉刘状高波樊泽贵付海洋李魁孙悦尹俊太
Owner HUIBO NEW MATERIAL CO LTD