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Mo-complex modified low-zinc hot-dip aluminum alloy coating material

A technology of hot-dip plating and complexes, applied in hot-dip plating process, metal material coating process, coating, etc., can solve the problems of weak bonding force, poor wettability of steel substrate, high risk, etc., and achieve processability and workability Good weldability, good wettability of steel base, good elongation effect

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] However, the existing problems in the steel hot-dip coating industry are: the 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; ②The method of improving hot-dip coating from the aspects 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 a substantial breakthrough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Select a group of elements according to the formula combination, according to the weight percentage: Zn: 28, Sr: 0.01, Li: 0.1, Nb: 0.8, Bi: 0.025, Ti-B: 0.1, substrate interface reaction buffer Te: 0.1, The rest is Al and unavoidable trace impurities, modifier Mo(CO) 6 It is 0.6% of the total charge; the total amount of alloy prepared is 1000kg, then the weight of each substance required is calculated as: Zn: 280kg, Sr: 0.1 kg, Li: 1 kg, Nb: 8 kg, Bi: 0.25 kg, Ti-B: 1 kg, substrate interface reaction buffer Te: 1 kg, Al: 702.65kg, Mo(CO) 6 : 6 kg;

[0015] Then add other substances according to 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; then continue smelting and stirring, and sample and analyze again until the ratio of each element fully meets the formula requirements;

[0016] Then refine the alloy melt in the furnace; add a refining agent to th...

Embodiment 2

[0019] Select a group of elements according to the formula, according to the percentage by weight: Zn: 29, Sr: 0.015, Li: 0.15, Nb: 0.9, Bi: 0.03, Ti-B: 0.15, substrate interface reaction buffer Fe: 0.45, the rest For Al and unavoidable trace impurities, modifier Mo(CO) 6 It is 0.55% of the total charge; the total amount of alloy prepared is 1000kg, then the weight of each substance required is calculated as: Zn: 290kg, Sr: 0.15 kg, Li: 1.5 kg, Nb: 9 kg, Bi: 0.3 kg, Ti-B: 1.5 kg, matrix interface reaction buffer Fe: 4.5 kg, Al: 687.55kg, Mo(CO) 6 5.5kg;

[0020] All the other steps are the same as in Example 1.

Embodiment 3

[0022] Select a group of elements according to the formula, according to the percentage by weight: Zn: 30, Sr: 0.02, Li: 2.0, Nb: 1.0, Bi: 0.035, Ti-B: 0.2, substrate interface reaction buffer Si: 0.8, the rest For Al and unavoidable trace impurities, modifier Mo(CO) 6 0.5% of the total charge; the total amount of alloy prepared is 1000kg, then the weight of each substance required is calculated as: Zn: 300kg, Sr: 0.2kg, Li: 20kg, Nb: 10kg, Bi: 0.35 kg , Ti-B: 2 kg, substrate interface reaction buffer Si: 8 kg, Al: 654.45kg, Mo(CO) 6 : 5kg;

[0023] All the other steps are the same as in Example 1.

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Abstract

The invention discloses a Mo-complex modified low-zinc hot-dip aluminum alloy coating material. Based on element weight percentage, the alloy is composed of 28%-30% of Zn, 0.01%-0.02% of Sr, 0.1%-2.0% of Li, 0.8%-1.0% of Nb, 0.025%-0.035% of Bi, 0.1%-0.2% of Ti-B, 0.1%-0.8% of a substrate interface reaction buffer agent, and the balance being Al and inevitable trace impurities; and the modifier Mo(CO)6 accounts for 0.5%-0.6% of a total amount of furnace charging materials. The aluminum alloy coating material provided by the invention is a high-quality aluminum alloy coating material used for steel hot-dip and integrates various advantages such as wettability to base steel, strong bonding force, high strength, good elongation, high temperature resistance, thin coating, good corrosion resistance, workability and weldability together.

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 degraded by a Mo complex. Background technique [0002] Compared with electroplating, spray plating, evaporation plating, mechanical barrel plating and other methods, hot-dip galvanizing protection technology for steel surface has the characteristics of easy control of coating thickness, strong corrosion resistance, low cost, good process controllability, and high efficiency. Since it was first used in industrial production in France in 1836, after more than 170 years of development, great progress has been made in coating materials, hot-dip coating technology and equipment, product types and uses. [0003] However, the existing problems in the steel hot-dip coating industry are: the aluminum-zinc alloy coating has not overcome the problems of poor wettability and weak bonding force with the steel substrate, resulting in more...

Claims

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Application Information

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IPC IPC(8): C23C2/12C22C21/10C22C1/06
Inventor 门三泉张中可车云陈新孟
Owner GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES
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