Novel hot dipping aluminum alloy with hydrogen sulfide and sodium chloride corrosion resistance

A technology of hydrogen sulfide resistance and hot-dip plating, applied in the field of alloys, can solve the problems of difficulty in hot-dip plating, easy oxidation, etc., and achieve the effects of good cold-formability and welding performance, micro-dense structure, and good corrosion resistance.

Inactive Publication Date: 2018-09-28
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the relatively flexible nature of aluminum, it is very easy to oxidize, so hot-dip plating is more difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A new type of aluminum alloy for hot-dip plating resistant to hydrogen sulfide and sodium chloride corrosion. In terms of weight percentage, the composition of the alloy is Ba:0.1wt.%, Hf:0.3wt.%, Ca:0.4wt.%, Bi:1.2wt.%, Sc:0.2wt.%, Eu:0.1wt.% ,S:0.2wt.%, the balance is aluminum. The preparation method of the above-mentioned novel aluminum alloy for hot-dip plating which is resistant to corrosion by hydrogen sulfide and sodium chloride comprises the following steps: adding the above proportioned raw materials into an induction furnace protected by argon gas, and using a silicon carbide crucible; The raw materials are added to the induction furnace protected by the atmosphere, and a silicon carbide crucible is used; the alloy solution is formed by induction heating to 700-800 degrees, and the electromagnetic stirring effect is fully stirred for about 10 minutes; the alloy liquid is kept at 700-800 degrees and static Put it in place for 10 minutes and then pour it into t...

Embodiment 2

[0019] A new type of aluminum alloy for hot-dip plating resistant to hydrogen sulfide and sodium chloride corrosion. In terms of weight percentage, the composition of the alloy is Ba: 0.2wt.%, Hf: 0.5wt.%, Ca: 0.6wt.%, Bi: 1.5wt.%, Sc: 0.4wt.%, Eu: 0.2wt.% ,S:0.3wt.%, the balance is aluminum. The preparation method of the above-mentioned novel aluminum alloy for hot-dip plating which is resistant to corrosion by hydrogen sulfide and sodium chloride comprises the following steps: adding the above proportioned raw materials into an induction furnace protected by argon gas, and using a silicon carbide crucible; The raw materials are added to the induction furnace protected by the atmosphere, and a silicon carbide crucible is used; the alloy solution is formed by induction heating to 700-800 degrees, and the electromagnetic stirring effect is fully stirred for about 10 minutes; the alloy liquid is kept at 700-800 degrees and static Put it in place for 10 minutes and then pour it ...

Embodiment 3

[0022] A new type of aluminum alloy for hot-dip plating resistant to hydrogen sulfide and sodium chloride corrosion. In terms of weight percentage, the composition of the alloy is Ba:0.1wt.%, Hf:0.4wt.%, Ca:0.5wt.%, Bi:1.3wt.%, Sc:0.3wt.%, Eu:0.1wt.% ,S:0.2wt.%, the balance is aluminum. The preparation method of the above-mentioned novel aluminum alloy for hot-dip plating which is resistant to corrosion by hydrogen sulfide and sodium chloride comprises the following steps: adding the above proportioned raw materials into an induction furnace protected by argon gas, and using a silicon carbide crucible; The raw materials are added to the induction furnace protected by the atmosphere, and a silicon carbide crucible is used; the alloy solution is formed by induction heating to 700-800 degrees, and the electromagnetic stirring effect is fully stirred for about 10 minutes; the alloy liquid is kept at 700-800 degrees and static Put it in place for 10 minutes and then pour it into t...

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Abstract

The invention discloses a novel hot dipping aluminum alloy with hydrogen sulfide and sodium chloride corrosion resistance. The aluminum alloy comprises the following components in percentage by weight: 0.1-0.2 wt.% of Ba, 0.3-0.5 wt.% of Hf, 0.4-0.6 wt.% of Ca, 1.2-1.5 wt.% of Bi, 0.2-0.4 wt.% of Sc, 0.1-0.2 wt.% of Eu, 0.2-0.3 wt.% of S, and the balance aluminum. The aluminum alloy solves the current situation of backward technologies in the national hot dipping aluminum alloy field at present, and breaks through the bottleneck of restricting the development of hot dipping aluminum steel plate production technologies and equipment in the national high-end field through technology innovation and optimal design. In the near future, the material can be widely applied to more fields.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to an aluminum alloy. Background technique [0002] Corrosion of steel refers to a damage phenomenon caused by chemical or electrochemical action when steel is in contact with the surrounding medium. Corrosion of steel has brought a lot of inconvenience to production and life, resulting in huge economic losses. The direct economic loss caused by steel corrosion in the world is about 700 billion U.S. dollars every year, which is 6 times the sum of losses caused by natural disasters such as earthquakes, floods, and typhoons. The loss caused by steel corrosion in my country accounts for about 4% of the gross national product, and the amount of steel scrapped due to corrosion accounts for about 25%-30% of the annual output of steel. [0003] Hot-dip galvanizing is the reaction of molten zinc with an iron substrate to produce an alloy layer, thereby combining the substrate and the coati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/02C23C2/12
CPCC22C21/003C22C1/026C23C2/12
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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