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Non-indentation adhesive welding connection method for metal plates

A connection method and a technology of metal plates, which are applied in metal processing, welding equipment, metal processing equipment, etc., can solve the problems of high glue welding process, accelerated electrode wear, and cavity formation, so as to achieve excellent corrosion resistance and improve joint performance , The effect of preventing the adhesive layer from burning

Active Publication Date: 2015-12-16
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing glue welding process also has significant disadvantages: 1) The energy input of the glue welding process is relatively high and very concentrated, so that there are obvious indentations at the joints and the surface is not smooth, resulting in a decrease in the aesthetics of the car body
2) During the glue welding process, due to the insulation of the glue layer, the contact resistance will increase, so that the heat generation will be larger under the same process parameters, and the electrode wear will be accelerated.
3) High heat input during welding will lead to local ablation of the glue layer, forming cavities and causing defects
4) The glue welding process is only suitable for the connection between metals of the same material. For the connection of dissimilar metals with large differences in melting point, such as aluminum alloy-steel plate, this process cannot be used

Method used

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  • Non-indentation adhesive welding connection method for metal plates
  • Non-indentation adhesive welding connection method for metal plates
  • Non-indentation adhesive welding connection method for metal plates

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The upper metal plate 1 of this embodiment is a stamped galvanized steel sheet with a thickness of 2mm for automobiles produced by Baosteel, and the lower metal plate 1 is also a stamped and galvanized steel sheet with a thickness of 2mm for automobiles produced by Baosteel. The diameter is 0.35mm, and its material is a certain type of zinc-tin-copper solder. Adhesive 3 is Henkel 5016 epoxy-polyurethane structural adhesive, and the roller electrode has a smooth surface.

[0028] Process parameters: The welding current is 6000A, the electrification equipment is a certain type of intermediate frequency DC welding machine, and the welding speed is 0.2m / min.

[0029] The process of this embodiment is as figure 1 a) ~ c) as shown:

[0030] 1) The glue injection gun moves to the top of the metal plate 1 to be glued, squeezes the glue injection gun so that a certain amount of structural glue 3 mixed with metal particles 2 falls on the metal plate, and the adhesive 3 is coated...

Embodiment 2

[0037] The upper metal plate 1 of this embodiment is a 1.6mm thick AA6061-T6 aluminum alloy plate, and the lower metal plate 1 is a stamped galvanized steel plate with a thickness of 2 mm for automobiles produced by Baosteel. The diameter is 0.76mm, the material is aluminum-silicon solder, the adhesive 3 is Dow 1486 epoxy structural adhesive, and the roller electrode has a smooth surface.

[0038] Process parameters: The welding current is 4000A, the electrification equipment is a certain type of intermediate frequency DC welding machine, and the welding speed is 0.1m / min.

[0039] The process of this embodiment is as figure 1 a) ~ c) as shown:

[0040] 1) The glue injection gun moves to the top of the metal plate 1 to be glued, squeezes the glue injection gun so that a certain amount of structural glue 3 mixed with metal particles 2 falls on the metal plate, and the adhesive 3 is coated by the continuous movement of the glue injection gun Cover the surface to be joined.

...

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Abstract

The invention discloses a non-indentation adhesive welding connection method for metal plates, and the method is implemented through the following steps that: an adhesive mixed with metal particles is coated between two layers of horizontally-placed metal plates; the two layers of metal plates gradually pass through a space between a roller electrode couple on which a welding current is exerted, so that a closed loop is defined by roller electrodes, the metal plates and the metal particles so as to achieve metallurgical interconnection; finally, after the adhesive is cured, an effect of non-indentation fixed connection is achieved. The method disclosed by the invention can be used for significantly improving the peel strength of joints and eliminate spot welding indentations, and also can be applied to the connection of heterogeneous metal sheets, and the normal tensile strength of processed metal plates can reach about 7000 N.

Description

technical field [0001] The invention relates to a technology in the field of automobile manufacturing, in particular to a non-indentation glue welding connection method for metal plates. Background technique [0002] Adhesive connection is widely used in the automotive industry due to its light weight, good sealing performance, high shear strength, excellent fatigue resistance and uniform stress distribution, and is an essential connection process in the body manufacturing process . At the same time, due to the insulation of the adhesive layer, it can effectively prevent the electrochemical corrosion caused by the potential difference, which is particularly important in the current multi-material body manufacturing. However, compared with connection methods such as resistance spot welding and riveting, the peel strength of glued joints has poor peel strength and joint ductility. security risks. In order to solve the above problems, especially to improve the peel strength ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/00C09J11/04B23K101/18
CPCB23K1/0004C09J11/04
Inventor 李永兵朱晓博武韬略张超群楼铭来新民林忠钦
Owner SHANGHAI JIAO TONG UNIV
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