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Production method of high-performance cladding coating on surface of aluminum alloy

An aluminum alloy surface, high-performance technology, applied in the direction of metal material coating process, coating, etc., to achieve the effect of low cost, enhanced comprehensive performance, and improved lifespan

Pending Publication Date: 2021-10-22
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention overcomes the deficiencies of the prior art, and proposes a method for preparing a high-performance cladding coating on the surface of an aluminum alloy, which solves the problem of the interface bonding between the aluminum alloy substrate and the cladding layer, so that a polymorphic microstructure is generated in the transition region

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Working with 300 golden phase sandpaper using 300, then performing surface sandblasting treatment.

[0035] 2. Clean the aluminum alloy surface with acetone and then washed 1 h in an ultrasonic cleaning machine.

[0036] 3. Preparation of mucous powder: 92% Ni60, 1% SiC and 7% LA with mass fraction 2 O 3 The ball mill is placed in the planetary ball mill, wherein the ball mill is: the rotational speed is 300r / min, the ball ratio is 5: 1, the time is 2 h, the diameter is 3mm, 5 mm, and the ratio of stainless steel ball ratio of 8 mm is 3: 5: 2 The ball milling process is carried out under argon atmosphere protection.

[0037] 4, the mixed powder after the ball is prepared into a paste and is uniformly applied to the surface-treated aluminum alloy surface with a thickness of about 1 mm. Then dry 1 h at 120 ° C.

[0038] 5. The coating layer is coldly pressed into a prefabricated block using a hydraulic device, wherein the cold pressure pressure is 30 MPa, and the holding...

Embodiment 2

[0042] 1. Working with 300 golden phase sandpaper using 300, then performing surface sandblasting treatment.

[0043] 2. Clean the aluminum alloy surface with acetone and washed 1.5 h in an ultrasonic cleaning machine.

[0044] 3. Preparation of mucous powder: 94% Ni60, 1% SiC and 5% LA with mass fraction 2 O 3 The ball mill is placed in the planetary ball mill, wherein the ball mill is: the rotational speed is 400r / min, the ball ratio is 5: 1, the time is 2 h, the diameter is 3mm, 5 mm, 8 mm stainless steel ball ratio is 3: 5: 2 The ball milling process is carried out under argon atmosphere protection.

[0045] 4, the mixed powder after ball mill is prepared into a paste, and is uniformly coated with a surface-treated aluminum alloy surface with a thickness of about 1.5 mm. Then dry at 140 ° C for 1 h.

[0046] 5. The coating layer is coldly pressed into a prefabricated block using a hydraulic device, wherein the cold pressure pressure is 40 MPa, and the holding time is 40 min....

Embodiment 3

[0050] 1. Working with 200 of the aluminum alloy surface to be credited using 200, then perform surface sandblasting treatment.

[0051] 2. Clean the aluminum alloy surface with acetone and washed 1.5 h in an ultrasonic cleaning machine.

[0052] 3. Preparation of mucous powder: 92% Ni60, 2% SiC and 6% LA with mass fraction 2 O 3 The ball mill is placed in the planetary ball mill, wherein the ball milling parameters are: the rotational speed is 400r / min, the ball ratio is 5: 1, the time is 3 h, 3mm, 5 mm, 8 mm, respectively, 3: 5: 2 The ball milling process is carried out under argon atmosphere protection.

[0053] 4, the mixed powder after ball mill is prepared into a paste, and is uniformly coated with a surface-treated aluminum alloy surface with a thickness of about 1.5 mm. Then dry at 140 ° C for 1 h.

[0054] 5. The coating layer is coldly pressed into a prefabricated block using a hydraulic device, wherein the cold pressure pressure is 50 MPa, and the holding time is 25 m...

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Abstract

The invention relates to an aluminum alloy surface modification technology, in particular to a production method of a high-performance cladding coating on the surface of an aluminum alloy. The production method of the high-performance cladding coating on the surface of the aluminum alloy comprises the following steps: conducting ball milling on Ni60, SiC and La2O3 with certain mass fractions to produce cladding powder; and blending the mixed powder obtained after ball milling into paste, coating the surface of the aluminum alloy with the paste, conducting drying, conducting cold pressing on a coating layer to form a prefabricated block, conducting induction cladding on the prefabricated block, subjecting a test piece obtained after cladding to heat-preservation aging standing treatment, and then making the test piece stand in air in a room temperature state. According to the production method of the high-performance cladding coating on the surface of the aluminum alloy, the problem of interface bonding of an aluminum alloy matrix and a cladding layer is solved, so that a polymorphic microstructure is generated in a transition area; and the service life of an aluminum alloy component is prolonged, and the aluminum alloy component adapts to severe environments.

Description

Technical field [0001] The present invention relates to an aluminum alloy surface modification technique, and is specifically an induction cladding process of an aluminum alloy surface for improving the performance of an aluminum alloy. Background technique [0002] It is well known that aluminum and aluminum alloys have small density, high thermal conductivity, high electrical conductivity, lower than high thermal expansion coefficient of strength and strength, etc., which are easy to process. Therefore, it is widely used in many industrial fields such as aerospace, automotive, ships, and petrochemicals. Especially in the automotive industry, due to light weight of aluminum and its aluminum alloy, the weight of the car can be reduced, so fuel consumption can be reduced, which will reduce the emissions of greenhouse gas such as carbon dioxide, which will greatly help energy conservation and environmental protection, and It is conducive to improving efficiency and enhancement. How...

Claims

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Application Information

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IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 刘和平杨恒喆张森铭郭支明孙凤儿
Owner ZHONGBEI UNIV
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