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Arc weld bonding connecting system and method for dissimilar metals

A connection system and arc welding technology, applied in arc welding equipment, welding equipment, welding accessories, etc., can solve the problem of excessive corrosion of dissimilar metal welded joints, and achieve the purpose of suppressing the decline of mechanical properties of joints, easy to popularize and apply, and suitable for materials. wide effect

Active Publication Date: 2015-11-11
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By introducing an adhesive layer at a certain distance around the process hole to effectively isolate the joint gap from the surrounding corrosive environment, the joints are effectively protected, and by controlling the distance between the adhesive layer and the edge of the process hole, the adhesive layer during the welding process is effectively eliminated. Burning loss and the influence of water vapor in the adhesive layer on the quality and performance of the joint solve the problem of excessive corrosion of dissimilar metal welded joints

Method used

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  • Arc weld bonding connecting system and method for dissimilar metals
  • Arc weld bonding connecting system and method for dissimilar metals
  • Arc weld bonding connecting system and method for dissimilar metals

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Embodiment 1

[0042] Such as Figure 1~3 As shown, this embodiment includes: an automatic gluing system composed of a gluing hole positioning device 1 and a gluing device, and an automatic arc welding system composed of a welding hole locating device 19, an arc welding system and a robot system, wherein: gluing The hole positioning device 1 is connected with the gluing device and transmits the coordinates of the center position of the gluing process hole. The robot system is connected with the arc welding system and transmits welding control instructions to realize the welding action. The robot system is connected with the welding hole positioning device 19 and receives the welding hole position information. .

[0043] The glue application device includes: a glue injection cylinder 2, a blank holder 7 and a thermocouple 4 respectively arranged at both ends of the glue injection cylinder, a heating coil 3 arranged outside the glue injection cylinder, and a piston movably arranged in the glue...

Embodiment 2

[0060] The metal plate 9 with holes in this embodiment is aluminum alloy 6022-T4, the lower galvanized steel plate 10 is electro-galvanized dual-phase high-strength steel DP780, the thickness of the plate is matched: 1mm+2mm, and the aluminum alloy plate 9 is mechanically polished to remove the surface Oxide layer, galvanized steel plate 10 uses acetone reagent to remove oil stains on the surface of the metal plate, adhesive 8 is epoxy resin two-component structural adhesive, welding wire 20 is made of A1Si3Mn, and its diameter is 1.2mm.

[0061] Process parameters: Welding current is 116A, voltage is 14V, wire feeding speed is 5.4m / min, welding gun movement speed is 32.6mm / s, arc length correction is 0%, welding wire withdrawal frequency is 70Hz, and argon is used as shielding gas. The flow rate is 20L / min.

[0062] The process of this embodiment is as figure 1 (a)~(g), figure 2 (a)~(c) and Figure 4 (a) ~ (d) as shown:

[0063] 1) Pre-punching a number of process holes ...

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Abstract

The invention relates to the field of metal welding technology, and provides an arc weld bonding connecting system and method for dissimilar metals. The system comprises an automatic gluing system composed of a gluing hole positioning device and a gluing device, and an automatic arc welding system composed of a welding positioning device, an arc welding system and a robot system. The gluing hole positioning device is connected with the gluing device and transmits a coordinate of the central position of a gluing hole, the robot system is connected with the arc welding system and transmits a control instruction of the arc welding system to implement welding work, and the robot system is connected with the welding hole positioning device and receives the welding hole position information. The arc weld bonding connecting system composites the bonding technology and arc spot welding technology, mechanical property reduction of a joint caused by chemical potential difference of dissimilar metals and electrochemical corrosion in peripheral gaps of welding joint can be effectively inhibited. The arc weld bonding connecting system is low in technical cost, high in efficiency, and easy to popularize and apply in bodywork.

Description

technical field [0001] The invention relates to a technology in the field of metal connection, in particular to an arc glue welding connection system and method for dissimilar metals. Background technique [0002] Since reducing the weight of the car body can achieve the purpose of energy saving and emission reduction, light alloy materials such as aluminum and magnesium, which are much less dense than steel, are used by major car manufacturers in car body manufacturing. However, due to the immature manufacturing process and high cost, the application of light alloys in automobile bodies is limited. Therefore, it is a trend to use light alloys and advanced high-strength steels to form a mixed connection structure of dissimilar materials for automobile bodies, which involves light alloys and steel materials. Process issues for joining dissimilar metals. [0003] However, due to the huge difference in melting point, thermal expansion coefficient, electrical conductivity and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/23B23K9/32B23K9/16
Inventor 李永兵雷海洋C·布莱尔来新民林忠钦
Owner SHANGHAI JIAO TONG UNIV
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