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Preparation method for aluminum alloy composite board

A technology for aluminum alloy sheets and composite sheets, applied in metal material coating process, superimposed layer coating, vacuum evaporation coating and other directions, can solve the problems of reduced life, negative electrode potential, thermal peeling effect, etc., to improve the combination of strength, avoidance of corrosion, high strength and effect of corrosion resistance

Active Publication Date: 2021-07-16
烟台通鼎舟汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the aluminum skeleton in the aluminum / lead anode plate obtained by the preparation method of the present invention can be recycled when the service life is reached, and new composite materials can be remanufactured, which is conducive to the recycling of resources, but it should be clear that the patent is in There are certain defects in theory, mainly focus on two points: (1) However, as known by those skilled in the art to directly electroplate the copper layer on the aluminum material, the thermal expansion coefficient of copper and aluminum is very different. Under certain conditions, an obvious thermal stripping effect will occur, resulting in bulging of the electrodeposition and a decrease in life; (2) The electrode potential of aluminum is very negative, and the patent uses electroplating to plate copper. In the electroplating process, aluminum and copper salts will first occur The replacement reaction, the formed copper metal, seriously affects the bonding strength between the coating and the aluminum substrate

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  • Preparation method for aluminum alloy composite board
  • Preparation method for aluminum alloy composite board
  • Preparation method for aluminum alloy composite board

Examples

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Embodiment 1

[0044] A method for preparing an aluminum alloy composite plate, comprising the following processing steps:

[0045] (1) Surface pretreatment aluminum alloy plate to remove the oxide film on the surface.

[0046] Pretreatment includes mechanical grinding, pickling step, described mechanical grinding is to use 300#, 600#, 1000# sandpaper is polished successively, and described pickling is 5g / L H 2 SO 4 , 0.03 g / L HF, fatty alcohol ether sodium sulfate 0.5g / L, temperature 35 o C, the time is 10 minutes.

[0047] (2) Preparation of metal fluoride transition layer.

[0048] The thickness of the metal fluoride transition layer is 0.5-1 μm, and the main component of the metal fluoride is fluorine aluminum titanium sodium salt. The preparation process is to soak the pretreated aluminum alloy in step (1) in a solution containing 4g / L hexafluoride Titanic acid, 2g / L NaF, monobutyric acid 4g / L, pH=4±0.2, time 4min, dry.

[0049] (3) Physical sputtering of chromium metal layer and c...

Embodiment 2

[0057] A method for preparing an aluminum alloy composite plate, comprising the following processing steps:

[0058] (1) Surface pretreatment aluminum alloy plate to remove the oxide film on the surface.

[0059] Pretreatment includes mechanical grinding, pickling step, described mechanical grinding is to use 300#, 600#, 1000# sandpaper is polished successively, and described pickling is 5g / L H 2 SO 4 , 0.03 g / L HF, fatty alcohol ether sodium sulfate 0.5g / L, temperature 35 o C, the time is 10 minutes.

[0060] (2) Preparation of metal fluoride transition layer.

[0061] The metal fluoride transition layer has a thickness of 0.5-1 μm, and the main component of the metal fluoride is sodium fluoride aluminum titanium salt. The preparation process is to soak the pretreated aluminum alloy in step (1) Fluotitanic acid, 2.5g / L NaF, 4.5g / L monobutyric acid, pH=4±0.2, time 4.5min, dry.

[0062] (3) Physical sputtering of chromium metal layer and chromium-copper-nitrogen alloy laye...

Embodiment 3

[0070] A method for preparing an aluminum alloy composite plate, comprising the following processing steps:

[0071] (1) Surface pretreatment aluminum alloy plate to remove the oxide film on the surface.

[0072] Pretreatment includes mechanical grinding, pickling step, described mechanical grinding is to use 300#, 600#, 1000# sandpaper is polished successively, and described pickling is 5g / L H 2 SO 4 , 0.03 g / L HF, fatty alcohol ether sodium sulfate 0.5g / L, temperature 35 o C, the time is 10 minutes.

[0073] (2) Preparation of metal fluoride transition layer.

[0074] The thickness of the metal fluoride transition layer is 0.5-1 μm, and the main component of the metal fluoride is sodium fluoride aluminum titanium salt. The preparation process is to soak the pretreated aluminum alloy in step (1) in a solution containing 5g / L hexafluoride Titanic acid, 3g / L NaF, monobutyric acid 5g / L, pH=4±0.2, time 5min, dry.

[0075] (3) Physical sputtering of chromium metal layer and c...

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Abstract

The invention provides a preparation method for an aluminum alloy composite board. The preparation method comprises the following treatment steps of (1) carrying out surface pretreatment on an aluminum alloy board to remove an oxidation film on the surface; (2) preparing a metal fluoride transition layer; (3) physically sputtering a chromium metal layer and a chromium-copper-nitrogen alloy layer; (4) casting a lead-silver alloy layer; and (5) obtaining the aluminum alloy composite board through heat treatment and rolling. The obtained aluminum alloy board is high in hardness and binding force, and when the aluminum alloy board serves as an electrodeposition anode, the service life and corrosion resistance of the aluminum alloy board are far better than those of similar anodes.

Description

technical field [0001] The invention relates to the technical field of anode plate preparation, in particular to a method for preparing an aluminum alloy composite plate. Background technique [0002] Modern zinc smelting methods are divided into two categories: fire method and wet method, among which the wet method is the main one. The fire method zinc smelting includes three main processes: roasting, reduction distillation and refining, mainly including closed blast furnace zinc smelting, flat tank zinc smelting, Vertical tank zinc smelting, and electrothermal zinc smelting. Flat tank zinc smelting and vertical tank zinc smelting are both indirect heating, which has high energy consumption and poor adaptability to raw materials. use. Although electrothermal zinc smelting is directly heated but does not produce combustion gas, it also has the problems of small production capacity, high energy consumption, and low direct recovery rate of zinc. Therefore, the development pr...

Claims

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Application Information

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IPC IPC(8): C23C28/00C22F1/04C23C6/00C23C14/02C23C14/06C23C14/16C23C14/34C23C22/34C23C22/78C23G1/12C25C1/16C25C7/02
CPCC23C28/322C23C28/321C23C28/34C23C22/78C23G1/125C23C22/34C23C14/34C23C14/165C23C14/0641C23C14/0036C23C14/025C23C6/00C22F1/04C25C7/02C25C1/16Y02P10/20
Inventor 莫日根
Owner 烟台通鼎舟汽车零部件有限公司
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