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Repair welding method for copper-steel composite plate joint face defective area

A composite board and joint surface technology, applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve problems such as unseen repair welding, achieve high production efficiency, high-quality repair welding repair, and reduce consumption.

Inactive Publication Date: 2018-01-09
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

201480043947.9 Friction stir welding method, in aluminum alloy castings, 2000 series, 4000 series, 5000 series and 7000 series aluminum alloy materials, which are considered to be difficult to weld during friction stir welding Friction stir welding can be beneficial to obtain welded products with intact welded parts without welding defects, but there is no friction stir welding method for repair welding of defective areas of the joint surface of copper-steel clad plates

Method used

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  • Repair welding method for copper-steel composite plate joint face defective area
  • Repair welding method for copper-steel composite plate joint face defective area
  • Repair welding method for copper-steel composite plate joint face defective area

Examples

Experimental program
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Effect test

Embodiment 1

[0025] In this example, the red copper-low carbon steel clad plate was prepared by explosive cladding technology. The size of the copper plate is 500mm*250mm*3mm, and the size of the low carbon steel plate is 500mm*250mm*10mm. The red copper plate is used as the cladding material 1 on the top, and the low-carbon steel plate is used as the substrate 2 on the bottom. A D150mm joint surface defect area 3 of the composite plate was found by ultrasonic testing. Such as figure 2 It is a metallographic photo of the defect area of ​​the joint surface of the composite plate before repair welding. It can be seen from the picture that there are large gaps at the interface between the copper and the low-carbon steel, and no effective metallurgical connection has been formed.

[0026] Such as figure 1 As shown, the friction stir treatment method is used to repair the defect area of ​​the joint surface of the composite plate. Fasten the copper-steel composite plate on the workbench of ...

Embodiment 2

[0030] In this example, the red copper-stainless steel clad plate was prepared by explosive cladding technology. The size of the copper plate is 500mm*250mm*3mm, and the size of the stainless steel plate is 500mm*250mm*8mm. The copper plate is used as the cladding material 1 on the top, and the stainless steel plate is used as the substrate 2 on the bottom. A D120mm joint surface defect area 3 of the composite plate was found by ultrasonic testing. Such as Figure 4 It is a metallographic photo of the defect area of ​​the joint surface of the composite plate before repair welding. It can be seen from the picture that there are large gaps at the interface between copper and stainless steel, and no effective metallurgical connection has been formed.

[0031] Such as figure 1As shown, the friction stir treatment method is used to repair the defect area of ​​the joint surface of the composite plate. Fasten the copper-steel composite plate on the workbench of the friction stir ...

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Abstract

The invention relates to a repair welding method for a copper-steel composite plate joint face defective area. The method comprises the steps that a stirring friction treatment method is adopted to carry out repair welding on the copper-steel composite plate joint face defective area, and for the copper-steel composite plate, recovery by repair welding on the joint face defective area can be achieved; according to the repair welding process of the stirring friction treatment method, a stirring friction welding machine is adopted to carry out stirring friction welding on the copper-steel composite plate joint face defective area, the copper-steel composite plate is prepared through a certain metal composite plate lap-joint jointing technology, the copper-steel composite plate is fastened ona work table of the stirring friction welding machine, a friction welding stirring head of the stirring friction welding machine is moved to the position above the copper-steel composite plate jointface defective area, the stirring head rotates at the high speed, a stirring needle below the stirring head is inserted into the metal layer above the defective area and penetrates the joint interfaceof the copper-steel composite plate, and the stirring head linearly advances in the defective area with a certain rate; when one pass of stirring friction treatment is finished, the stirring head islifted up, the stirring head is horizontally moved in the copper-steel composite plate joint face defective area.

Description

technical field [0001] The invention relates to the field of metal composite plate preparation, in particular to a repair welding method for a defect region of a joint surface of a copper-steel composite plate. Background technique [0002] Metal composite panels are layered composite materials obtained by closely bonding two or more metal panels together. The metal composite board can make full use of the physical and chemical properties of the components that make up the board, thereby improving the overall performance of the composite board. At the same time, for more expensive metals such as titanium alloys and copper alloys, conventional metal substrates and expensive metal cladding composite boards are used. The structure can significantly reduce the use of expensive metals and greatly reduce production costs under the premise of ensuring performance. As far as copper-steel composite metal plates are concerned, due to the excellent properties of both copper and steel,...

Claims

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Application Information

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IPC IPC(8): B23K20/12
Inventor 冯斌徐宇皓史清宇方雨吴建军夏小院贾强赵鹏飞邹贵生夏克瑞
Owner TSINGHUA UNIV
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