Dissimilar metal material pipeline welding device

A welding device and technology for dissimilar metals, applied in welding equipment, metal processing equipment, high-frequency current welding equipment, etc., can solve the problems of difficult welding quality, expensive equipment, high welding contact requirements, etc., and achieve the goal of improving heating efficiency and heating temperature Uniformity, accelerated heating rate, and cost-saving effects

Inactive Publication Date: 2019-01-29
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, although resistance welding has been widely used in the industry, there are still some problems. Resistance welding of thin plate components with a thickness of less than 3mm requires expensive and complicated equipment, and the required current can be as high as 10kA. The contact requirements for welding are relatively large. High, resistance welding is not suitable for welding large-diameter metal pipes, the welding quality of resistance welding is controlled by many factors, and it is difficult to improve welding quality
The existing welding device is not very suitable for welding large-diameter dissimilar metal material pipes. Even if it can be welded, the welding effect is not good. And welding devices for medium and large diameter dissimilar metal material pipelines

Method used

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  • Dissimilar metal material pipeline welding device
  • Dissimilar metal material pipeline welding device
  • Dissimilar metal material pipeline welding device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as Figure 1-Figure 3 As shown, a pipe welding device 100 of dissimilar metal materials in this embodiment is used for welding coaxial first pipe 1 and second pipe 2 of different metal materials, including: a support sleeve assembly, a heat insulation assembly and High frequency induction heating coil 30 .

[0025] The first pipe 1 is a copper pipe with a tapered front end, the second pipe 2 is an aluminum pipe, and the tapered portion of the first pipe 1 is inserted into the second pipe 2 .

[0026] A hydraulic cylinder (not shown in the figure) is connected to the tail end of the first pipe 1 for applying pressure F to the first pipe 1 .

[0027] The first pipe 1 passes through the upper support sleeve 11 of the first pipe, the lower support sleeve 12 of the first pipe, and a baffle plate 40 for making the stress on the first pipe 1 more uniform is arranged between the hydraulic push rod of the hydraulic cylinder.

[0028] A stopper (not shown in the figure) is...

Embodiment 2

[0055] Such as Figure 4-Figure 6 As shown, this embodiment has a support sleeve assembly, a heat insulation assembly, and a high-frequency induction heating coil 30 . Compared with Embodiment 1, the upper middle support sleeve 19 and the lower middle support sleeve 110 of this embodiment are different, having the following structure:

[0056] The inner side of the upper middle support sleeve 19 and the inner side of the lower middle support sleeve 110 are provided with a channel with a larger radius on the left and a smaller radius on the right. liquid.

[0057] The radius of the left part of the hole is larger than the outer radius of the first pipe 1 , and the radius of the right part of the hole is the same as the outer radius of the first pipe 1 .

Embodiment 3

[0059] The structure of this embodiment is the same as that of Embodiment 2. There is a gap between the upper middle support sleeve 19 and the lower middle support sleeve 110 for discharging the copper-aluminum eutectic liquid, and the upper middle support sleeve 19 and the lower middle support sleeve respectively 110 is provided with grooves (not shown in the figure), two grooves are arranged on the left side of the junction of the first pipe 1 and the second pipe 2, and the groove on the upper middle support sleeve 19 is larger than that of the lower middle support sleeve 110 grooves are used to make the eutectic liquid flow out better when it flows upwards.

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Abstract

The invention provides a dissimilar metal material pipeline welding device. The device comprises a supporting sleeve assembly, a thermal insulation assembly and a high-frequency induction heating coil. The supporting sleeve assembly comprises a first pipe upper supporting sleeve and a first pipe lower supporting sleeve used for positioning a first pipe, a second pipe upper supporting sleeve and asecond pipe lower supporting sleeve used for positioning a second pipe, an upper supporting sleeve support with two ends fixed to the outer side of the first pipe upper supporting sleeve and the outerside of the second pipe upper supporting sleeve, a lower supporting sleeve support with two ends fixed to the outer side of the first pipe lower supporting sleeve and the outer side of the second pipe lower supporting sleeve, an upper middle supporting sleeve and a lower middle supporting sleeve, and the upper middle supporting sleeve and the lower middle supporting sleeve are arranged at the combination position of the first pipe and the second pipe; the thermal insulation assembly comprises a first pipe upper thermal insulation piece arranged on the first pipe upper supporting sleeve, a first pipe lower thermal insulation piece arranged on the first pipe lower supporting sleeve, a second pipe upper thermal insulation piece arranged on the second pipe upper supporting sleeve, and a second pipe lower thermal insulation piece arranged on the second pipe lower supporting piece. The high-frequency induction heating coil is arranged the upper middle supporting sleeve and the lower middlesupporting sleeve in a sleeving manner.

Description

technical field [0001] The invention relates to a pipe welding device, in particular to a pipe welding device for dissimilar metal materials. Background technique [0002] At present, although resistance welding has been widely used in the industry, there are still some problems. Resistance welding of thin plate components with a thickness of less than 3mm requires expensive and complicated equipment, and the required current can be as high as 10kA. The contact requirements for welding are relatively large. High, resistance welding is not suitable for welding large-diameter metal pipes, the welding quality of resistance welding is controlled by many factors, and it is difficult to improve the welding quality. The existing welding device is not very suitable for welding large-diameter dissimilar metal material pipes. Even if it can be welded, the welding effect is not good. And welding devices for medium and large diameter pipes of dissimilar metal materials. Contents of t...

Claims

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Application Information

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IPC IPC(8): B23K13/02B23K101/06
CPCB23K13/025
Inventor 曹蒙云张卓曹凯刘新宽王子延
Owner UNIV OF SHANGHAI FOR SCI & TECH
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