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Welding method for improving aluminum and steel weldment welding effect

A welding method and technology of welded parts, applied in the direction of welding/welding/cutting articles, welding equipment, laser welding equipment, etc., can solve the problems of poor service characteristics of assemblies, uneven weld composition, and low bonding strength, etc., and achieve good results The effect of promoting value, improving quality and prolonging service life

Active Publication Date: 2017-10-24
YANGZHOU FUWATER CONSTR MASCH MFG CO LTD
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Problems solved by technology

In this way, there is inevitably the problem of welding aluminum / aluminum alloy workpieces and steel workpieces, and the characteristics of the two materials are significantly different, and there are prone to problems such as easy oxidation of the welded joints, uneven weld composition, and cracks in the welded joints. , leading to problems such as low bonding strength of the two weldments and poor service characteristics of the assembly

Method used

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  • Welding method for improving aluminum and steel weldment welding effect
  • Welding method for improving aluminum and steel weldment welding effect

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Embodiment 1

[0027] A welding method for improving the welding effect of aluminum and steel welded parts, comprising the following steps:

[0028] (1) Surface treatment:

[0029] The surfaces of the aluminum weldment 2 and the steel weldment 1 to be welded are respectively subjected to oxidation film and oil removal treatment in sequence;

[0030] (2) Lap joint treatment:

[0031] Place the aluminum welded part 2 processed in step (1) directly above the steel welded part 1 for lap joint, and the length of the lap joint is 5-8 mm;

[0032] (3) Modified powder addition treatment:

[0033] The modified powder and the solvent are mixed evenly according to the mass ratio of 1:1.8 to obtain a paste additive, and then the paste additive is coated on the upper surface and side surface of the aluminum weldment 2, correspondingly forming the upper surface additive strip 6 and The side surface additive stack 7, the upper surface additive strip 6 and the side surface additive stack 7 are continuous...

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Abstract

The invention discloses a welding method for improving an aluminum and steel weldment welding effect. The method comprises the following steps of surface treatment, lamp joint treatment, modified power adding treatment and laser welding treatment. Accordingly, special improvement treatment is conducted on an existing welding treatment process, the welding quality is effectively improved, the overall mechanical strength characteristic of aluminum and steel weldments is enhanced, the service life is prolonged, and very good popularization value is achieved.

Description

technical field [0001] The invention belongs to the technical field of welding treatment, and in particular relates to a welding method for improving the welding effect of aluminum and steel welded parts. Background technique [0002] Welding parts of the same material are better welded to each other, but when welding parts of different materials are welded to each other, due to differences in material melting point, shrinkage rate and other characteristics, there are usually problems such as poor welding effect and poor welding quality. Steel is a common raw material in the fields of machinery and construction. Sometimes, in order to reduce the quality and other characteristics of the overall component, aluminum / aluminum alloy workpieces need to be used instead of steel workpieces. For example, in automobile manufacturing, aluminum / aluminum alloy workpieces are used After replacing steel workpieces, the overall weight of the car will drop significantly, and when the overall...

Claims

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Application Information

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IPC IPC(8): B23K26/244B23K26/323B23K26/211B23K26/12B23K26/60B23K103/20
CPCB23K26/123B23K26/211B23K26/244B23K26/323B23K26/60B23K2103/20
Inventor 周正明
Owner YANGZHOU FUWATER CONSTR MASCH MFG CO LTD
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