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Sr and multi-combination-metamorphism low-zinc hot-dipping-coating aluminum alloy coating materials

A technology of hot-dip plating and aluminum alloy, which is applied in the field of low-zinc hot-dip aluminum alloy coating material, can solve the problems that the aluminum-zinc alloy coating is not overcome, difficult to obtain technical and economic effects, and no substantial breakthrough has been achieved, and achieves improved processing. The effect of high strength and solderability, strong bonding force, and refinement of crystal grain size

Inactive Publication Date: 2013-06-05
贵州铝厂有限责任公司
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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

[0021] Select a group of elements according to the formula combination, according to the weight percentage: Zn: 28, Sr: 0.01, Li: 0.1, solvent passivator Mo: 0.8, Bi: 0.025, grain refiner Nb-B: 0.1, Rare earth additive La: 0.1, substrate interface reaction buffer Si: 0.1, and the rest is Al; the total amount of alloy prepared is 1000kg, and the weight of each substance required is calculated as: Zn: 280kg, Sr: 0.1kg, Li : 1kg, Mo: 8kg, Bi: 0.25kg, Nb-B: 1kg, La: 1kg, Si: 1kg, Al: 708.6 kg.

[0022] Then add matrix interface reaction buffer, Sr, Mo, Li, grain refiner, rare earth additive and precipitation hardener according to the formula, and finally add zinc and stir evenly; on-site sampling analysis, according to the analysis results and formula range, adjust the addition amount; then continue to smelt and stir, and sample and analyze again until the ratio of each element fully meets the formula requirements.

[0023] Then refine the alloy melt in the furnace; add refining ...

Embodiment 2

[0026] Select a group of elements according to the formula, according to the weight percentage: Zn: 29, Sr: 0.015, Li: 1.0, W: 0.9, Bi: 0.03, grain refiner (Ti-N+V-B): 0.15, rare earth Additive (Nd+Sm+Eu): 0.3, matrix interface reaction buffer (Si+Se): 0.45, and the rest is Al; the total amount of alloy prepared is 1000kg, and the weight of each substance required is calculated as: Zn : 290kg, Sr: 0.15kg, Li: 10kg, W: 9kg, Bi: 0.3kg, Ti-N: 0.5kg, V-B: 1kg, Nd: 1kg, Sm: 1kg, Eu: 1kg, Si: 2.0kg, Se : 2.5kg, the rest is Al: 968.16 kg.

[0027] All the other steps are the same as in Example 1.

Embodiment 3

[0029] Select a group of elements according to the formula, according to the percentage by weight: Zn: 30, Sr: 0.02, Li: 2.0, solvent passivator (Mo+Nb): 1.0, Bi: 0.035, grain refiner (Ni- B+Ni-C+Ni-N): 0.2, rare earth additive (Tm+Yb): 0.5, substrate interface reaction buffer (Fe+Si): 0.8, and the rest is Al; the total amount of alloy prepared is 1000kg, then it is calculated The weight of each substance required to extract is: Zn: 300kg, Sr: 0.2kg, Li: 20kg, Mo: 5kg, N5.0kg, Bi: 0.35kg, Ni-B: 0.5kg, Ni-C: 0.5kg , Ni-N: 1kg, Tm: 2kg, Y: 3kg, Fe: 3kg, Si: 5kg, and the rest is Al: 654.45kg.

[0030] All the other steps are the same as in Example 1.

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Abstract

The invention discloses Sr and multi-combination-metamorphism low-zinc hot-dipping-coating aluminum alloy coating materials. According to element weight percentage, alloy constituent is that Zn: 28-30, Sr: 0.01-0.02, Li: 0.1-2.0, solvent deactivator: 0.8-1.0, Bi: 0.025-0.035, grain refiner: 0.1-0.2, rare earth additives: 0.1-0.5, basal body interface reaction buffering agent: 0.1-0.8, and the rest of the alloy constituent is Al and inevitable micro impurity. The Sr and multi-combination-metamorphism low-zinc hot-dipping-coating aluminum alloy coating materials have the advantages of being good in wettability of base steel, strong in combination force, high in strength, good in extensibility, high-temperature-resistant, thin in thickness of a coating layer, strong in corrosion resistance, and good in machinability and weldability and the like.

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 deteriorated by combination of Sr and multiple components. 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 w...

Claims

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Application Information

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IPC IPC(8): C23C2/12C22C21/10
Inventor 车云门三泉
Owner 贵州铝厂有限责任公司
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