Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of underwater submerged arc welding device and welding method

A technology of submerged arc welding and submerged arc flux, applied in welding equipment, welding accessories, arc welding equipment, etc., can solve the problems of obvious rapid cooling effect of weld seam and reduce the mechanical properties of welded joints, etc. Low, improve the effect of weld forming

Active Publication Date: 2020-12-04
SHANDONG UNIV
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During underwater wet welding, the workpiece to be welded is directly in the water, and the quenching effect of the water on the weld is obvious, and it is easy to produce a hardened structure with high hardness, which greatly reduces the mechanical properties of the welded joint

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of underwater submerged arc welding device and welding method
  • A kind of underwater submerged arc welding device and welding method
  • A kind of underwater submerged arc welding device and welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An underwater submerged arc welding device, including a solder box and a sleeve, solder is provided in the solder box, a solder delivery pipe is provided at the bottom of the solder box, one end of the solder delivery pipe is connected to the sleeve, and a stepper is provided at the other end of the solder delivery pipe An auger is arranged inside the motor and the solder conveying pipe, and the auger is connected with the stepping motor; the top of the sleeve is connected with the gun barrel of the welding gun, and the lower part of the welding torch is annularly nested inside the sleeve. By adjusting the rotation speed of the stepping motor, the control of the solder conveying speed can be realized, and the purpose of controlling the solder coverage thickness of the welding zone can be further achieved.

[0030] The solder is a viscous liquid water-resistant solder, and its components include HJ350 submerged arc flux and epoxy resin with a weight ratio of 3:2. Convent...

Embodiment 2

[0033] An underwater submerged arc welding device, the structure of which is as described in Embodiment 1, the difference is that in order to prevent the solder box from entering water, a box cover is provided on the top of the solder box, and a rubber ring is provided between the box cover and the solder box. The stepper motor is also waterproofed and sealed.

Embodiment 3

[0035] An underwater submerged arc welding device, the structure of which is as described in Embodiment 1, the difference is that the torch barrel is fixedly connected to the solder box through a connecting plate.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a novel underwater submerged arc welding device and a welding method and belongs to the technical field of underwater submerged arc welding. The device comprises a solder boxand a sleeve; the solder box is internally provided with a solder which is a viscous liquid water-resistant solder; the bottom of the solder box is provided with a solder conveying pipe; one end of the solder conveying pipe is connected with the sleeve, and the other end of the solder conveying pipe is provided with a stepping motor; the solder conveying pipe is internally provided with a screw; the screw is connected with the stepping motor; the top end of the sleeve is connected with a welding gun barrel; and the lower part of the welding gun is annularly nested in the sleeve. For the novelunderwater submerged arc welding device, by adjusting a rotating speed of the stepping motor, control of a solder conveying speed can be realized, the purpose of controlling a solder coverage thickness of a welding area is further achieved, welding seam formation is effectively improved, a welding seam cooling speed is lowered, the microstructure of a welding joint is improved, and the mechanicalproperty of the welding joint is effectively improved.

Description

technical field [0001] The invention relates to an underwater submerged arc welding device and a welding method, belonging to the technical field of underwater welding. Background technique [0002] With the continuous development of marine engineering and the increasing demand for marine resource exploitation, underwater wet welding technology has been widely used in the construction of offshore oil and gas platforms and the laying and construction of submarine oil pipelines due to its advantages of flexible operation and low cost. In maintenance. However, since the surrounding area of ​​underwater wet welding is not air but water, the two media have different physical and chemical properties, which brings a series of adverse effects to underwater welding. The main performance is as follows: (1) The hydrogen content of the weld is high. In the process of underwater wet welding, the underwater arc will cause the thermal decomposition of the surrounding water, resulting in ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/18B23K9/32
CPCB23K9/18B23K9/32
Inventor 贾传宝董胜法韩焱飞武传松
Owner SHANDONG UNIV