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Welding method and device for welding with accelerated cooling

A technology of accelerated cooling and welding method, which is applied in the field of welding manufacturing, can solve the problems such as the inability to improve the structure and properties of the weld seam and the heat-affected zone, and achieve the effect of improving the embrittlement and softening problems and improving the metallographic structure

Inactive Publication Date: 2016-11-23
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the microstructure and properties of the weld seam and the heat-affected zone cannot be improved in the welding production of the prior art, the embodiment of the present invention provides a welding method and device for accelerated cooling with welding. The method and device do not sacrifice the quality of the weld seam Under the condition of welding production speed, the purpose of improving the metallographic structure of the weld seam and the heat-affected zone, refining the grain, and improving the embrittlement and softening of the heat-affected zone in the high-energy high-speed welding process

Method used

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  • Welding method and device for welding with accelerated cooling
  • Welding method and device for welding with accelerated cooling
  • Welding method and device for welding with accelerated cooling

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Embodiment 1

[0049] see figure 2 , the embodiment of the present invention provides a welding method of accelerated cooling with welding, the method is to accelerate the cooling of the weld seam and the heat-affected zone or the local area of ​​the base metal during the welding process, so as to improve the metallographic structure and mechanical properties.

[0050] The present invention improves the surface heat transfer coefficient of the steel plate through the above method, enhances the cooling effect, and accelerates the cooling of the weld seam and the heat-affected zone in a high-temperature state with welding, thus controlling and changing the inherent heat cycle in the welding process The process speeds up the cooling speed of the weld seam and the heat-affected zone, and superimposes the heat source of large heat input and the cold source generated by the accelerated cooling device with welding, resulting in a higher cooling speed than low-line energy welding. It has proved th...

Embodiment 2

[0057] Such as figure 1 shown, see also figure 2 , this embodiment takes figure 1 To illustrate mainly, the embodiment of the present invention provides a device 1 for accelerated cooling with welding, which is installed on the welding machine head 1, and the device is installed on the welding machine head 1 through a connecting piece 5, the described The device 1 moves synchronously with the welder head 1, and the device 1 includes a driving connection part B, a clamping adjustment part 7, a spray head 6, a medium conveying part 13A and an adsorption part 27A,

[0058] The driving connection part B is connected to the welder head 1, and the driving connection part B is used to drive the spray head 6 to move linearly,

[0059] The clamping adjustment part 7 is connected with the driving connection part B and moves relative to the driving connection part B. The clamping adjustment part 7 is used to clamp the spray head 6 and drive the spray head 6 to move horizontally and ve...

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Abstract

The invention discloses a welding method and device for welding with accelerated cooling and belongs to the field of welding and manufacturing. The method disclosed by the invention is characterized in that accelerated cooling for welding seams and a heat affected zone or a local zone of parent metal in the welding process is realized, and the aims of improving the welding seams and metallographic structures in the heat affected zone, refining grains and improving the problems of embrittlement and softening in the heat affected zone are achieved on the premise of not influencing the welding speed. The device is arranged on a machine head of a welding machine and synchronously moves along with the machine head of the welding machine, and comprises a driving connection part, a clamping and adjusting part, a spray head, a medium transporting part and an adsorbing part. By means of the structure, a proper accelerated cooling effect for high-temperature welding seams and metal in the heat affected zone in the welding process is realized, and the aims of improving the welding seams and the metallographic structures in the heat affected zone, refining the grains and improving the problems of embrittlement and softening in the heat affected zone are achieved on the premise of not influencing the welding speed.

Description

technical field [0001] The invention relates to the field of welding manufacturing, in particular to a welding method and device for accelerating cooling with welding that can improve the metallographic structure, grain size and mechanical properties of weld seams and heat-affected zones in the manufacture of welding structures. Background technique [0002] Welded structures are parts or components manufactured by welding methods. The welded joint is composed of the weld seam, the fusion zone, the heat-affected zone and the base metal. The weldment is melted under the action of heat to form a molten pool. After the heat source leaves the molten pool, the molten metal (the base metal in the molten pool and the The filler metal) cools and crystallizes, and integrates with the base metal to form a welded joint. [0003] The mechanical properties of welded joints are determined by the metallographic structure of the weld metal and the heat-affected zone metal. The welding met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K31/02B23K9/32B23K9/18
Inventor 赵波付彦宏王旭杨玮玮李国鹏
Owner BC P INC CHINA NAT PETROLEUM CORP
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