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Low zinc hot dipping aluminium alloy plating material containing Ca multi-combination metamorphism

A technology of hot-dip plating and aluminum alloy, which is applied in the field of low-zinc hot-dip aluminum alloy coating materials, can solve the problems of reduced ability to wet the surface of the steel substrate, deterioration of the ductility and appearance of the coating, and increased viscosity of the zinc solution. The effect of wetting and fusion ability, reducing cold barrier, and reducing eutectic temperature

Inactive Publication Date: 2015-05-20
贵州铝厂有限责任公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is: provide a low-zinc hot-dip aluminum alloy coating material that contains Ca and multi-combination metamorphism, to solve: in the hot-dip plating process, due to the dissolution of iron, the viscosity of the zinc solution increases and infiltrates the surface of the steel substrate The ability to reduce and due to the increase of iron content in the zinc solution, the thickness of the zinc layer also increases significantly, so that the ductility and appearance of the coating deteriorate.

Method used

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Embodiment Construction

[0017] According to the weight percentage of elements in the present invention, the alloy composition is Zn: 10-13, alloy strengthening agent Cu: 5.0, polarization modifier Ca: 0.03, solvent passivating agent Mo: 0.2, precipitation hardening agent Sn: 0.1, crystal grain Refining agent Zr: 0.1, matrix interface reaction buffer Fe: 0.5, rare earth additive: 0.5, the rest is Al and unavoidable trace impurities.

[0018] Select a group of elements according to the formula combination table, according to the percentage by weight: polarization modifier Ca: 0.03, alloy strengthening agent Cu: 5.0, solvent passivator Mo: 0.2, precipitation hardening agent Sn: 0.1, grain refinement Agent Zr: 0.1, rare earth additive: 0.5, matrix interface reaction buffer element Fe: 0.5, second solvent element Zn: 13, and the balance is Al;

[0019] The rare earth additive is one of the 17 rare earth elements, or more than one mixed rare earth element.

[0020] The total amount of the prepared alloy i...

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Abstract

The invention discloses low zinc hot dipping aluminium alloy plating material containing Ca multi-combination metamorphism. The composition of alloy comprises, by element weight, 10%-13% of Zn, 5.0% of alloy enhancer Cu, 0.03 % of polarization metamorphic agent Ca, 0.2 % of solvent passivator Mo and 0.5% of rare earth addition, and the rest of the composition of the alloy are A1 and micro impurities which are unavoidable. The low zinc hot dipping aluminium alloy plating material containing the Ca multi-combination metamorphism solves the problems that due to dissolution of iron in a hot dipping plating process, zinc liquid viscosity is enabled to be increased and the capability of the surface of an infiltrating steel matrix is reduced, the thickness of a zinc layer is obviously increased due to the fact that iron content in zinc liquid is increased, and therefore ductility and the appearance of the a plating layer are enabled to be poor, and other problems are solved too. The aluminium alloy plating material for hot dipping is obtained, wherein the aluminium alloy plating material for hot dipping is good in matrix wettability, strong in binding force, high in strength, good in extensibility, high temperature-resistance, thin in plating layer, and strong in corrosion resistance.

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 containing Ca and multi-combination deterioration. Background technique [0002] Due to the carbon content in iron and steel materials, the higher the carbon content, the easier it is for the material to be corroded. The temperature, humidity, oxygen content, and pH of the environment where the steel is located will all affect corrosion. The higher the temperature, the greater the humidity. The more oxygen, the more acidic environment will greatly accelerate the corrosion rate. At present, the corrosion prevention and control of steel materials is mainly through adding metal coatings on the steel surface for corrosion protection. Among the metal coating anti-corrosion methods, hot-dip galvanizing is recognized as the most effective and direct way to protect steel. One, the maximum solubility of iron in zinc liquid is 0.02%. I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/12C22C21/10
Inventor 门三泉车云胥光酉
Owner 贵州铝厂有限责任公司
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