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Li-Cu and multi-combination modified low-zinc hot-dip aluminum alloy coating material

A hot-dip plating, aluminum alloy technology, applied in hot-dip plating process, metal material coating process, coating and other directions, can solve the problems of easy peeling of the coating, high risk, large investment, etc., to achieve high strength and ductility, Rich source of raw materials, easy to recycle

Inactive Publication Date: 2013-06-12
GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] It can be seen that the main problems existing in the steel hot-dip coating industry at present are: ①The aluminum-zinc alloy coating has not overcome the problems of poor wettability and weak bonding force with the steel substrate, resulting in more serious problems such as missed coating and easy peeling of the coating after dipping Problems; ②The method of improving hot-dip galvanizing in terms of technology and equipment requires a lot of investment and high risk, and it is difficult to achieve significant technical and economic effects; ③The development of a large number of low-cost and high-performance coating materials that replace zinc has not yet achieved substantial breakthroughs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] (1) Select a group of elements according to the formula, according to the weight percentage: Zn: 25, Ru: 0.01, Cu: 2.0, Li: 1.2, Mn 2 (CO) 10 : 0.9, Cd: 0.45, Co-B: 0.08, rare earth additive Ce: 0.1, Si: 0.8, and the balance is Al; the total amount of alloy prepared is 1000kg, then the weight of each substance required is calculated as: Zn : 250kg, Ru: 0.1kg, Cu: 20kg, Li: 12kg, Mn 2 (CO) 10 : 9kg, Cd: 4.5kg, Co-B: 0.8kg, Ce: 1kg, Si: 8kg, Al: 694.6kg;

[0015] (2) First add aluminum ingots or molten aluminum into the melting furnace, heat it to melt it completely and keep it warm at 700-800°C;

[0016] (3) Add other substances according to the proportion of the formula, and finally add zinc and stir evenly; take samples and analyze on-site, adjust the addition amount according to the analysis results and formula range; Recipe required.

[0017] (4) Refining the above-mentioned alloy melt in a furnace; adding a refining agent to the alloy melt and stirring evenly,...

Embodiment 2

[0020] Select a group of elements according to the formula, according to the weight percentage: Zn: 27.5, Ru: 0.012, Cu: 2.25, Li: 1.3, Mn 2 (CO) 10 : 0.95, Cd: 0.47, Co-B: 0.09, rare earth additive La: 0.15, matrix interface reaction buffer Fe: 0.9, and the balance is Al; the total amount of the prepared alloy is 1000kg, and each material required is calculated The weight is: Zn: 275kg, Ru: 0.12 kg, Cu: 22.5 kg, Li: 13 kg, Mn 2 (CO) 10 : 9.5 kg, Cd: 4.7 kg, Co-B: 0.9 kg, La: 1.5 kg, Fe: 9 kg, Al: 334.7kg;

[0021] All the other steps are the same as in Example 1.

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Abstract

The invention discloses a Li-Cu and multi-combination modified low-zinc hot-dip aluminum alloy coating material. Based on element weight percentage, the alloy is composed of 25%-28% of Zn, 0.01%-0.015% of Ru, 2.0%-2.5% of Cu, 1.2%-1.4% of Li, 0.9%-1.0% of Mn2 (CO)10, 0.45%-0.5% of Cd, 0.08%-0.1% of Co-B, 0.1%-0.2% of rear earth additives, 0.8%-1.0% of a substrate interface reaction buffer agent, and the balance being Al and inevitable trace impurities. The Li-Cu and multi-combination modified low-zinc hot-dip aluminum alloy coating material provided in the invention has good overall performance, and overcomes problems of poor wettability and weak bonding force of the steel substrate.

Description

technical field [0001] The invention relates to an aluminum alloy coating material, in particular to a low-zinc hot-dip aluminum alloy coating material which is modified by combining Li-Cu and multiple components. Background technique [0002] Since the annual consumption of zinc for hot-dip galvanizing in the world reaches more than 70% of the total output of zinc metal, the shortage of zinc resources is becoming more and more serious. Since 2008, the world's zinc production has maintained an average of about 12 million tons per year, and the consumption of the hot-dip galvanizing industry has reached more than 8.5 million tons, while the coverage of galvanized steel products is less than 1 / 5 of the world's steel production. With the development of economy and society, the proportion of high-end coated steel products is increasing, but even if all the zinc in the world is used as coating materials, it is far from meeting the needs of hot dip coating of steel. This situatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/12C22C21/10
Inventor 张中可门三泉车云
Owner GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES