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Combined type submerged-arc welding device and method for implementing butt welding on large-diameter steel pipe

A submerged arc welding and combined technology, applied in the direction of welding/welding/cutting items, welding equipment, arc welding equipment, etc. Large volume and other problems, to achieve the effect of efficiency and quality reliability, efficiency and quality assurance, reasonable structure

Active Publication Date: 2017-05-10
广西建工第五建筑工程集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Butt welding of large-diameter steel pipes is a problem often encountered in construction. For butt welding of large-diameter steel pipes, submerged arc welding is generally used. Submerged arc welding is a method in which the arc burns under the flux layer for welding. It has stable welding quality. , high welding productivity, no arc light, less smoke and less pollution, etc., making it the main welding method in the manufacture of important steel structures such as pressure vessels, pipe sections, and box-shaped beams and columns; due to the existing submerged arc welding equipment It is a trolley-type submerged arc welding machine, which mainly welds straight-line welds. It has obvious advantages in welding long straight welds, but it is not suitable for butt welding of steel pipes with circular welds, especially large-diameter steel pipes.
[0003] Due to the large size and weight of large-diameter steel pipes, there is no particularly effective method at present. The large-scale equipment dedicated to butt welding of large-diameter steel pipes is not only complex in structure but also expensive. Butt welding of large-diameter steel pipes has the following technical problems:
[0004] 1. The submerged arc welding head is not easy to adjust, and cannot adapt to the welding of steel pipes with different diameters and specifications, and has poor versatility;
[0005] 2. The operation is cumbersome, the efficiency is low, and the quality is difficult to guarantee

Method used

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  • Combined type submerged-arc welding device and method for implementing butt welding on large-diameter steel pipe
  • Combined type submerged-arc welding device and method for implementing butt welding on large-diameter steel pipe
  • Combined type submerged-arc welding device and method for implementing butt welding on large-diameter steel pipe

Examples

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Effect test

Embodiment 1

[0041] A combined submerged arc welding device, including a submerged arc welding machine, a two-way adjustment frame and a roller frame for supporting large-diameter steel pipes, the submerged arc welding machine is installed on the upper part of the two-way adjustment frame, and the rollers Below the welder;

[0042] The two-way adjustable frame includes a machine base 1, a column 2 and a rocker arm 3. The column is installed vertically on the machine base, and the rocker arm is arranged along the horizontal direction. , the submerged arc welding machine is installed on the rocker arm through the support plate 4, and the support plate is slidably connected with the rocker arm and positioned by locking bolts; the submerged arc welding machine includes a welding machine control box 7, a submerged arc welding machine The head 5 and the welding wire reel 6, the welding machine control box 7, the submerged arc welding head 5 and the welding wire reel 6 are installed on the suppor...

Embodiment 2

[0052]A method for carrying out butt welding of large-diameter steel pipes, the method is a method for carrying out butt welding of large-diameter steel pipes by using a combined submerged arc welding device described in Embodiment 1, comprising the following steps:

[0053] S1. Assembled combined submerged arc welding device

[0054] S11. Install the Z3032 radial arm drilling machine. According to the diameter of the welded steel pipe, add a pad under the base. When the diameter of the welded pipe is 2 meters, the pad should be up to about 1 meter. Rotate the rocker arm 180° so that the rocker arm and the base are aligned On the left and right sides of the column, press the weight on the base to make the base, column and rocker stable;

[0055] S12. Install and fix the submerged arc welding machine, and install the welding machine control box, submerged arc welding head, and welding wire reel connected to the beam of the welding machine on the rocker arm as a whole through...

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Abstract

The invention relates to a combined type submerged-arc welding device. The combined type submerged-arc welding device comprises a submerged-arc welding machine, a bidirectional adjusting rack and a roller carrier used for bearing a large-diameter steel pipe, wherein the bidirectional adjusting rack comprises a machine base, an upright post and a rocker arm, the rocker arm is arranged along the horizontal direction, the end part of the rocker arm is slidably and rotatably connected with the upright post and is located by virtue of a locking bolt, the submerged-arc welding machine is mounted on the rocker arm by virtue of a support plate, the support plate is slidably connected with the rocker arm and is located by virtue of a locking bolt; the submerged-arc welding machine comprises a welding machine control box, a submerged-arc welding nose and a wire panel which are mounted on the support plate by virtue of a welding machine cross beam, and the submerged-arc welding machine is electrically connected with an external submerged-arc welding machine main machine by virtue of a wire. A method for implementing butt welding on a large-diameter steel pipe comprises the steps of assembling the combined type submerged-arc welding device, hoisting the large-diameter steel pipe and welding. The submerged-arc welding device is convenient to mount, dismount and carry, reasonable in structure and strong in adaptability, can be applicable to butt welding on steel pipes with the diameter specification ranging from 500mm to 2000mm and is simple in operation, easy to popularize and reliable in quality.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a combined submerged arc welding device and a method for butt welding large-diameter steel pipes. Background technique [0002] Butt welding of large-diameter steel pipes is a problem often encountered in construction. For butt welding of large-diameter steel pipes, submerged arc welding is generally used. Submerged arc welding is a method in which the arc burns under the flux layer for welding. It has stable welding quality. , high welding productivity, no arc light, less smoke and less pollution, etc., making it the main welding method in the manufacture of important steel structures such as pressure vessels, pipe sections, and box-shaped beams and columns; due to the existing submerged arc welding equipment It is a trolley-type submerged arc welding machine, which mainly welds straight-line welds. It has obvious advantages in welding long straight welds, but it is not suit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/18
CPCB23K9/18B23K2101/06B23K2103/04
Inventor 林德桂高志鹏黄祺合张华秦康
Owner 广西建工第五建筑工程集团有限公司