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Surface slag type steel plate hot-dip galvanized aluminum Ca-Al-Bi zinc aluminum alloy

A hot-dip galvanizing, zinc-aluminum alloy technology, applied in the field of alloys, can solve the problems of inability to improve product quality, poor control of aluminum concentration, and particles on the surface of the coating, and achieve excellent volatility and oxidation resistance, and strong spreadability , low cost effect

Inactive Publication Date: 2018-08-24
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, the aluminum concentration in hot-dip galvanized aluminum alloy is not well controlled, not only can not improve product quality, but will cause particles on the surface of the coating, and even defects such as missing plating, especially in batch hot-dip production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The invention relates to a Ca-Al-Bi zinc-aluminum alloy which is hot-dip galvanized aluminum on a slag-faced steel plate at 320-340 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca:0.4wt.%, Na:0.2wt.%, In:0.3wt.%, Co:0.5wt.%, Al:30.0wt.%, Bi:0.6wt .%, the balance is zinc. Alloy preparation method: Add the above-mentioned raw materials into an induction furnace protected by argon gas, and use a silicon carbide crucible; add the above-mentioned raw materials into an atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heating Form the alloy solution at 500-600 degrees, and use the electromagnetic stirring effect to fully stir for about 10 minutes; keep the alloy liquid at 500-600 degrees for 10 minutes, then cast it into the same level equipment as the hot top for semi-continuous casting into the required For round ingots, the ingot moving speed is 5-8m / min. The cast ingot can be used as hot-dip galvan...

Embodiment 2

[0021] The invention relates to a Ca-Al-Bi zinc-aluminum alloy which is hot-dip galvanized aluminum on a slag-faced steel plate at a temperature of 320-340 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca: 0.6wt.%, Na: 0.4wt.%, In: 0.5wt.%, Co: 0.8wt.%, Al: 38.0wt.%, Bi: 0.8wt .%, the balance is zinc. Alloy preparation method: Add the above-mentioned raw materials into an induction furnace protected by argon gas, and use a silicon carbide crucible; add the above-mentioned raw materials into an atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heating Form the alloy solution at 500-600 degrees, and use the electromagnetic stirring effect to fully stir for about 10 minutes; keep the alloy liquid at 500-600 degrees for 10 minutes, then cast it into the same level equipment as the hot top for semi-continuous casting into the required For round ingots, the ingot moving speed is 5-8m / min. The cast ingot can be...

Embodiment 3

[0024] The invention relates to a Ca-Al-Bi zinc-aluminum alloy which is hot-dip galvanized aluminum on a slag-faced steel plate at 320-340 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca:0.5wt.%, Na:0.3wt.%, In:0.4wt.%, Co:0.6wt.%, Al:35.0wt.%, Bi:0.6wt .%, the balance is zinc. Alloy preparation method: Add the above-mentioned raw materials into an induction furnace protected by argon gas, and use a silicon carbide crucible; add the above-mentioned raw materials into an atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heating Form the alloy solution at 500-600 degrees, and use the electromagnetic stirring effect to fully stir for about 10 minutes; keep the alloy liquid at 500-600 degrees for 10 minutes, then cast it into the same level equipment as the hot top for semi-continuous casting into the required For round ingots, the ingot moving speed is 5-8m / min. The cast ingot can be used as hot-dip galvan...

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PUM

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Abstract

The invention discloses surface slag type steel plate hot-dip galvanized aluminum Ca-Al-Bi zinc aluminum alloy and a processing technology thereof. The alloy comprises the following elements of, by weight, 0.4-0.6wt.% of Ca, 0.2-0.4wt.% of Na, 0.3-0.5wt.% of In, 0.5-0.8wt.% of Co, 30.0-38.0wt.% of Al, 0.6-0.8wt.% of Bi, and the balance zinc. The alloy can be used for hot-dip galvanizing of a steelplate at 320-340 degree, and has better corrosion resistance compared with traditional pure zinc hot dipping. The technology can be used for hot-dip galvanizing protection of steel for an ocean platform, and can be widely applied in more hot-dip galvanizing situations with more engineering application fields expanded.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a zinc alloy. Background technique [0002] The potential of zinc is negative than that of iron. When electrochemical corrosion occurs, zinc can be used as a sacrificial anode for cathodic protection of steel. Hot-dip galvanizing can significantly improve the atmospheric corrosion resistance of steel, and the galvanized layer can provide physical barrier protection for steel and isolate steel from corrosive media. The hot-dip galvanizing process is simple, and the steel is immersed in a molten zinc or zinc alloy bath continuously or in batches to obtain a hot-dip galvanized layer. Hot-dip galvanizing has the following characteristics: (1) Thick coating can be obtained, and the corrosion resistance is good. (2) The coating has good adhesion, and can be properly processed after plating, such as forming, welding and painting. [0003] In recent years, people have tried to apply ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C18/04C22C1/02C23C2/06
CPCC22C18/04C22C1/02C23C2/06
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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