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Low zinc hot dipping aluminum alloy coating material

A hot-dip plating, aluminum alloy technology is applied in the field of low-zinc hot-dip aluminum alloy coating materials to achieve the effects of improving the plasticity of the alloy, improving the strength and high temperature performance of the alloy, and improving the hardness and wear resistance of the alloy

Inactive Publication Date: 2015-05-20
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] The technical problem to be solved by the present invention: Aiming at the existing problems of pure zinc coating and pure aluminum coating, the present invention provides a low-zinc hot-dip aluminum alloy coating material in which Al is substituted for Zn

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] (1) Select a group of elements according to the formula, according to the weight percentage: Zn: 20, Pd: 0.01, Li: 1.5, Cr: 0.1, Sn: 0.01, grain refiner Co-N: 0.1, Eu: 0.01, Fe: 0.01, and the rest are Al; the total amount of alloy prepared is 1000kg, then the weight of each substance required is calculated as: Zn: 200kg, Pd: 0.1 kg, Li: 15 kg, Cr: 1 kg, Sn: 0.1 kg, Co-N: 1 kg, Eu: 0.1 kg, Fe: 0.1 kg, Al: 782.6 kg.

[0013] (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;

[0014] (3) Add matrix interface reaction buffer, polarization modifier, solvent passivator, grain refiner, alloy strengthener, 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...

Embodiment 2

[0018] Select a group of elements according to the formula, according to the weight percentage: Zn: 15, Pd: 0.07, alloy strengthening agent Mg: 2.5, Cr: 0.3, Sn: 0.03, grain refiner (Ti-C+ Ni-B+ Zr-N): 0.2, rare earth additive (Tm+Yb+Lu): 0.05, Fe: 1.0, and the rest is Al; the total amount of the prepared alloy is 1000kg, and the weight of each substance required is calculated as: Zn: 150kg, Pd: 0.7 kg, Mg: 25 kg, Cr: 3 kg, Sn: 0.3 kg, Ti-C: 0.5 kg, Ni-B: 0.5 kg, Zr-N: 1 kg, Tm: 0.3 kg, Yb: 0.1 kg Lu: 0.1 kg, Fe: 10 kg, Al: 808.6.

[0019] All the other steps are the same as in Example 1.

Embodiment 3

[0021] Select a group of elements according to the formula, according to the percentage by weight: Zn: 30, Pd: 0.15, alloy strengthening agent Cu: 3.8, Cr: 0.5, Sn: 0.05, grain refiner (Fe-C, Fe-N , Ni-B): 0.3, rare earth additives (La+Ce+Pr+Nd+Sm): 0.1, Fe: 2.0, and the rest is Al; the total amount of alloy prepared is 1000kg, and the required amount of each substance is calculated The weight is: Zn: 300 kg, Pd: 1.5 kg, Cu: 38 kg, Cr: 5 kg, Sn: 0.5 kg, Fe-C: 1 kg, Fe-N: 1 kg, Ni-B: 1 kg, La : 0.2 kg, Ce: 0.2 kg, Pr: 0.2 kg, Nd: 0.2 kg, Sm: 0.2 kg, Fe: 20 kg, Al: 631.0 kg.

[0022] All the other steps are the same as in Example 1.

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Abstract

The invention discloses a low zinc hot dipping aluminum alloy coating material. Alloy compositions comprise, by element weight percentage, 20-30 parts of Zn, 0.01-0.15 part of Pd, 1.5-3.8 parts of alloy enhancers, 0.1-0.5 part of Cr, 0.01-0.05 part of Sn, 0.1-0.3 part of a grain refiner, 0.01-0.1 part of a rare earth addition, 0.01-2.0 parts of Fe, and the rest are Al and inevitable microimpurity. According to the low zinc hot and high performance dipping aluminum alloy coating material, the Zn is replaced by the Al.

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. Background technique [0002] The pure zinc coating and pure aluminum coating of steel have their own advantages and disadvantages for the protection of steel. Generally speaking, the galvanized layer has good sacrificial cathodic protection ability, and its protection can last until the coating is completely dissolved. Even if the coating is partially destroyed and the steel substrate is exposed, as long as the coating does not peel off, its protective performance will not be reduced ; while the aluminized layer has the characteristics of high coating protection ability and slightly poor sacrifice protection ability. Therefore, strengthening the advantages of the two, overcoming their shortcomings and superimposing them, and developing and applying new high-performance coating materials with zinc-aluminum alloy or aluminum...

Claims

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Application Information

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