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Cr(CO)6 modified low-zinc hot-dip aluminum alloy coating material

A technology of hot-dip plating and aluminum alloy, which is applied in the direction of hot-dip plating process, metal material coating process, coating, etc., to achieve the effects of improving stress corrosion crack resistance, increasing strength, and refining crystal grain size

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] 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, Cu: 1.5, Sn: 0.01, grain refiner Ti-B: 0.1, rare earth additive Pr: 0.01, Fe: 0.01, the rest is Al and unavoidable trace impurities, modifier Cr(CO) 6 Accounting for 0.1% of the total charge; the total amount of alloy prepared is 1000kg, then the weight of each substance required is calculated as: Zn: 200kg, Pd: 0.1kg, Cu: 15 kg, Sn: 0.1 kg, Ti- B: 1kg, Pr: 0.1kg, Fe: 0.1kg, Al: 783.6kg, Cr(CO) 6 : 1kg;

[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 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 complete...

Embodiment 2

[0019] Select a group of elements according to the formula, according to the weight percentage: Zn: 25, Pd: 0.012, Cu: 2.6, Sn: 0.03, grain refiner Co-C+Co-N: 0.2, rare earth additive Pr: 0.05 , Fe: 1.0, the rest is Al and unavoidable trace impurities, modifier Cr(CO) 6 Accounting for 0.3% of the total charge; the total amount of alloy prepared is 1000kg, then the weight of each substance required is calculated as: Zn: 250kg, Pd: 0.12kg, Cu: 26kg, Sn: 0.3kg, Co-C : 1kg, Co-N: 1kg, Pr: 0.5kg, Fe: 10kg, Al: 711.08kg, Cr(CO) 6 : 3kg.

[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 weight percentage: Zn: 30, Pd: 0.15, Cu: 3.8, Sn: 0.05, grain refiner Fe-N+Ni-B+Ni-C: 0.3, rare earth Additive Pr: 0.1, Fe: 2.0, the rest is Al and unavoidable trace impurities, modifier Cr(CO) 6 Accounting for 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, Pd: 1.5kg, Cu: 38kg, Sn: 0.5kg, Fe-N : 1kg, Ni-B: 1kg, Ni-C: 1kg, Pr: 1kg, Fe: 20kg, the rest is Al: 636.0kg, Cr(CO) 6 : 5kg.

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

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PUM

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Abstract

The invention discloses a Cr(CO)6 modified low-zinc hot-dip aluminum alloy coating material. Based on element weight percentage, the alloy is composed of 20%-30% of Zn, 0.01%-0.15% of Pd, 1.5%-3.8% of Cu, 0.01%-0.05% of Sn, 0.1%-0.3% of a grain refining agent, 0.01%-0.1% of rear earth additive Pr, 0.01%-2.0% of Fe, and the balance being Al and inevitable trace impurities; and a modifier Cr(CO)6 accounts for 0.001% of to 0.01% of the total amount of furnace charging materials. The low-zinc, high-performance and hot-dip aluminum alloy coating material with Zn substituted by Al has relatively high overall performance.

Description

technical field [0001] The invention relates to an aluminum alloy coating material, in particular to a Cr(CO) 6 Deteriorated 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-alu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22C1/06C23C2/12
Inventor 门三泉张中可车云
Owner GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES
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