Surface treatment process before bonding of aluminium alloy automobile body component, aluminium alloy automobile body component, automobile body component connecting method, automobile body and automobile

A technology of surface treatment and aluminum alloy, which is applied in the direction of vehicle parts, upper structure, upper structure sub-assembly, etc., can solve the problem of poor comprehensive performance of the body, failure to meet the connection performance requirements of the all-aluminum body, and inability to give full play to the bonding strength and Performance and other issues, to achieve good bonding, to ensure protection and bonding performance, to improve the effect of bonding quality

Inactive Publication Date: 2018-01-09
ZHEJIANG YINGLUN AUTOMOBILE CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are few studies on the bonding process of aluminum alloys in the automotive field. The traditional universal process conditions cannot g

Method used

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  • Surface treatment process before bonding of aluminium alloy automobile body component, aluminium alloy automobile body component, automobile body component connecting method, automobile body and automobile
  • Surface treatment process before bonding of aluminium alloy automobile body component, aluminium alloy automobile body component, automobile body component connecting method, automobile body and automobile

Examples

Experimental program
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Effect test

Embodiment 1

[0126] A surface treatment process before bonding aluminum alloy body components, comprising the following steps:

[0127] (1) Degreasing: Use LQ18 degreasing fluid with a volume fraction of 3% to degrease the aluminum alloy body components, the degreasing temperature is 70°C, and the degreasing time is 4 minutes;

[0128] (2) Alkali etching: The alkali etching tank contains 60g / L NaOH, 150g / L Al powder and 15g / L 1015Blend additive, the alkali etching temperature is 65°C, the alkali etching time is 20min, and the alkali etching rate is controlled at 3g / m 2 / min;

[0129] (3) Alkaline cleaning: the cleaning tank contains 5g / L NaOH and 5g / L Al powder, the cleaning temperature is 38°C, and the cleaning time is 5min;

[0130] (4) Wash twice with tap water, the washing time for both times is independently 0.5min, and the chloride ion concentration in tap water is 20ppm;

[0131] (5) Deashing: use D17Blend with a volume fraction of 2% for ash removal, and the ash removal time is...

Embodiment 2

[0139] A surface treatment process before bonding aluminum alloy body components, comprising the following steps:

[0140] (1) Degreasing: Use LQ18 degreasing fluid with a volume fraction of 10% to degrease the aluminum alloy body components, the degreasing temperature is 50°C, and the degreasing time is 60 minutes;

[0141] (2) Alkali etching: the alkali etching tank contains 100g / L NaOH, 140g / L Al powder and 25g / L 1015Blend additive, the alkali etching temperature is 72°C, the alkali etching time is 5min, and the alkali etching rate is controlled at 7g / m 2 / min;

[0142] (3) Alkaline cleaning: the cleaning tank contains 25g / L NaOH and 30g / L Al powder, the cleaning temperature is 42°C, and the cleaning time is 4min;

[0143] (4) Wash twice with tap water, the washing time for both times is 7 minutes independently, and the chloride ion concentration in tap water is 50ppm;

[0144] (5) Deashing: use D17Blend with a volume fraction of 10% for ash removal, and the ash removal...

Embodiment 3

[0152] A surface treatment process before bonding aluminum alloy body components, comprising the following steps:

[0153] (1) Degreasing: Use LQ18 degreasing fluid with a volume fraction of 5% to degrease the aluminum alloy body components, the degreasing temperature is 60°C, and the degreasing time is 30 minutes;

[0154] (2) Alkali etching: The alkali etching tank contains 80g / L NaOH, 160g / L Al powder and 20g / L 1015Blend additive, the alkali etching temperature is 68°C, the alkali etching time is 16min, and the alkali etching rate is controlled at 4g / m 2 / min;

[0155] (3) Alkaline cleaning: the cleaning tank contains 10g / L NaOH and 60g / L Al powder, the cleaning temperature is 40°C, and the cleaning time is 3min;

[0156] (4) Wash twice with tap water, the washing time for both times is 5 minutes independently, and the chloride ion concentration in tap water is 10ppm;

[0157] (5) Deashing: use D17Blend with a volume fraction of 5% for ash removal, and the ash removal t...

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Abstract

The invention discloses a surface treatment process before bonding of an aluminium alloy automobile body component, the aluminium alloy automobile body component, an automobile body component connecting method, an automobile body and an automobile, and relates to the technical field of aluminium alloy automobile body component connecting. The surface treatment process comprises an anodic oxidationtreatment step and a sealing treatment step; when the anodic oxidation treatment step is performed, an anodic oxidation fluid contains H2SO4, the current density is 1.4 to 1.6 A/dm<2>, the oxidizingtemperature is 17 to 20 DEG C, and the thickness of an oxidation film after treatment is 2 to 10 [mu]m; the sealing treatment is performed by using hot water at the temperature of 96 to 100 DEG C; andthe sealing time is 10 to 45 minutes. According to the surface treatment process before the bonding of the aluminium alloy automobile body component, the aluminium alloy automobile body component, the automobile body component connecting method, the automobile body and the automobile, the defects that conventional universal process conditions cannot fully play the strength and performance of thebonding, the requirements on connection performance of an overall aluminium automobile body cannot be met, and the comprehensive performance of the connected automobile body is poor are relieved. Thebonding performance is higher than the welding performance and the corrosion resistance is improved after the bonding of the automobile body component which is treated by the treatment process disclosed by the invention.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy vehicle body connection, in particular, to a surface treatment process of aluminum alloy body components before bonding, an aluminum alloy body component, a method for connecting body components, a vehicle body and an automobile. Background technique [0002] Aluminum alloy has the advantages of good mechanical properties and light weight, and has been widely used in various industries, especially in the field of aerospace vehicles and high-end sports cars that require high lightweight. Mechanical connections can be used between aluminum alloy components, such as ordinary aluminum alloy body frame connection technology welding and riveting methods, but both of these are point or line contact connection methods, which are prone to stress concentration and cause the defect of low connection strength. With the popularization of lightweight aluminum alloy body technology in automobiles, the con...

Claims

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Application Information

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IPC IPC(8): C25D11/08C25D11/18C25D11/16B62D25/00
Inventor 黄艳灵张之好陈春龙张羽翼林明世李寅蔡伟坚
Owner ZHEJIANG YINGLUN AUTOMOBILE CO LTD
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