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A device for connecting dissimilar materials based on electrodes on the same side

A technology of dissimilar materials and connecting devices, applied in welding equipment, resistance welding equipment, metal processing equipment, etc., can solve the problems of low welding strength and difficulty in achieving effective connection, and achieve the effect of avoiding shrinkage cavities

Active Publication Date: 2019-12-31
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a dissimilar material connection device based on electrodes on the same side, which solves the problem of low welding strength and difficulty in achieving effective connection between materials with large differences in physical and chemical properties in traditional devices

Method used

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  • A device for connecting dissimilar materials based on electrodes on the same side
  • A device for connecting dissimilar materials based on electrodes on the same side
  • A device for connecting dissimilar materials based on electrodes on the same side

Examples

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Embodiment 1

[0033] A dissimilar material connection device based on electrodes on the same side and its application method described in the embodiment of the present invention are as follows: figure 1 shown.

[0034] A dissimilar material connection device based on electrodes on the same side, including an indenter 1, a power source 2, an auxiliary electrode 3, a working electrode 4, a conductor 5, an upper sample 6, a lower sample 7 and a connector 8. The auxiliary electrode 3 and the working electrode 4 are connected to the power supply 2 through the conductor 5, the auxiliary electrode 3 is in contact with the lower sample 7, the lower sample 7 is located between the working electrode 4 and the indenter 1, and the upper sample 6 is located in the lower sample. Between the sample 7 and the indenter 1, the connecting piece 8 is located between the upper sample 6 and the indenter 1.

[0035] The auxiliary electrode 3 and the working electrode 4 are located on the same side of the lower s...

Embodiment 2

[0055] The dissimilar material connection device and its use method described in the embodiment of the present invention are as follows: figure 2 shown.

[0056] In this embodiment, the device for connecting dissimilar materials includes an indenter 1 , a power source 2 , an auxiliary electrode 3 , a working electrode 4 , a conductor 5 , an upper sample 6 , a lower sample 7 , a connector 8 and a spacer 10 . The auxiliary electrode 3 and the working electrode 4 are connected to the power supply 2 through the conductor 5, the auxiliary electrode 3 is in contact with the lower sample 7, the lower sample 7 is located between the working electrode 4 and the indenter 1, and the upper sample 6 is located in the lower sample. Between the sample 7 and the indenter 1, the connector 8 is located between the upper sample 6 and the indenter 1, the gasket 10 is located between the working electrode 4 and the lower sample 7 and has no direct contact with the auxiliary electrode 3, and the w...

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Abstract

The invention discloses a different material connecting device based on same-side electrodes, and belongs to the technical field of connection of different materials. The different material connectingdevice comprises a pressing head, a power source, an auxiliary electrode, a working electrode, an electric conductor, a connecting piece, and the like, wherein the auxiliary electrode and the workingelectrode are connected with the power source through the electric conductor; the auxiliary electrode and the working electrode are positioned on the same side of a lower sample; the connecting pieceis positioned between an upper sample and the pressing head; a molting point T8 of the connecting piece is higher than a melting point T6 of the upper sample, namely, T8 is larger than T6; joint strength of welding points meets the requirement that F87 is larger than F67; pressure N is applied between the working electrode and the pressing head; the power source outputs a piercing current I1; after being pierced by the steel connecting piece, the partially extruded upper sample enters a groove of the steel connecting piece; and the power source outputs a welding current I2 through a loop between the working electrode and the auxiliary electrode, welding is achieved and welding cores are formed. The different material connecting device has the advantages that resistance spot welding connection of different materials is effectively achieved, operation is simple, and cost is low.

Description

technical field [0001] The invention belongs to the technical field of connection of dissimilar materials, and in particular relates to a device for connecting dissimilar materials based on same-side electrodes. It is suitable for connecting dissimilar metals that are not easy to be welded by traditional welding methods. The joint has high strength and can effectively avoid shrinkage cavities and shrinkage porosity defects. Background technique [0002] Resistance spot welding is an important method of joining materials and is widely used in industries such as automotive. The welding process is realized under the action of pressure. When welding, external force must be relied on to make the workpieces to be welded in close contact. The welding current releases resistance heat through the workpieces to achieve welding. [0003] In traditional resistance spot welding, the upper sample and the lower sample are usually placed between the upper electrode and the lower electrode ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K11/20B23K11/36
CPCB23K11/20B23K11/36
Inventor 张永强付参汪小培伊日贵鞠建斌杨建炜章军
Owner SHOUGANG CORPORATION
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