Low-zinc hot dipping aluminum alloy coating material containing Mg multiple combination metamorphism

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 poor wettability with steel substrate, easy peeling of coating, weak bonding force, etc. The effect of good property, good wettability and strong binding force

Inactive Publication Date: 2013-06-05
GUIZHOU ACAD OF SCI
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Problems solved by technology

[0003] The technical problem to be solved in the present invention is: provide a kind of low-zinc hot-dip aluminum alloy coating material that contains Mg multi-combination metamorphism, to solve: 1, the zinc content of current coating material exceeds 50%, zin

Method used

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Embodiment Construction

[0018] According to the weight percentage of elements in the present invention, the alloy composition is Zn: 20-22, alloy strengthening agent Cu: 4.0, polarizing modifier Mg: 0.2, solvent passivating agent Mn: 1, precipitation hardening agent Sb: 0.1, crystal grain Refining agent Zr: 0.01, matrix interface reaction buffer Fe: 2.0, rare earth additives are La, Ce or their mixture: 0.5, the rest are Al and unavoidable trace impurities.

[0019] Select a group of elements according to the formula combination table, according to the percentage by weight: polarizing modifier Mg: 0.2, alloy strengthening agent Cu: 4.0, solvent passivating agent Mn: 1, precipitation hardening agent Sb: 0.1, grain refinement Agent Zr: 0.01, rare earth additive La: 0.5, matrix interface reaction buffer element Fe: 2.0, second solvent element Zn: 22, and the balance is Al;

[0020] The total amount of alloy prepared is 1000kg, then the weight of each substance required is calculated as: Mg: 2kg, Cu: 40k...

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Abstract

The invention discloses a low-zinc hot dipping aluminum alloy coating material containing Mg multiple combination metamorphism. The material comprises, by weight, 20% to 22% of alloying component Zn, 4.0% of alloying enhancer Cu, 0.2% of polarization metamorphism agent Mg, 1% of solvent passivant Mn, 0.1% of precipitation hardening agent Sb, 0.01% of grain refiner Zr, 2.0% of substrate interface reaction buffer agent Fe, 0.5% of rare earth addition, the balance A1 and inevitable trace impurities. The problem that hot-dip galvanizing occupies a high proportion of zinc is solved, zinc resources are saved, the aluminum alloy coating materials which are good in wettability to base steel, high in bonding force, high in intensity, good in extensibility, high temperature resistance, good in corrosion resistance, good in machinability and weldability are obtained by utilizing Mg and the above alterant and low-zinc aluminum alloys, and the aluminum alloy coating materials are used for hot dipping of high quality steel.

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 Mg 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, but due to the high cost of zinc materials and the increa...

Claims

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Application Information

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IPC IPC(8): C23C2/12C22C21/10
Inventor 张中可李荣华朱绍严谢贵生李家华
Owner GUIZHOU ACAD OF SCI
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