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Weld joint back surface gas protection and forming device for pipeline welding and application thereof

A gas shielding and forming device technology, which is applied in the direction of providing/removing shielding gas devices, welding accessories, etc., can solve the problem of not being able to take into account the formation of the back of the weld and gas protection, etc., to reduce the difficulty of welding for welders, simple structure, reduce The effect of shielding gas volume on the back of the weld

Pending Publication Date: 2021-10-22
合肥聚能电物理高技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the existing technology, the present invention provides a gas protection and forming device for the back of the weld for pipeline welding, an Internet of Things equipment system, and a method for information access and transmission, which solves the problem that the back of the weld cannot be considered in the prior art. The problem of forming and gas protection has achieved the technical effect of improving the welding effect and reducing the difficulty of welding

Method used

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  • Weld joint back surface gas protection and forming device for pipeline welding and application thereof
  • Weld joint back surface gas protection and forming device for pipeline welding and application thereof
  • Weld joint back surface gas protection and forming device for pipeline welding and application thereof

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Embodiment 1

[0043] Please refer to Figure 1-4 , This embodiment takes the typical case of four arc-shaped seats to describe in detail the gas protection and forming device for the back of the weld for pipeline welding of the present invention.

[0044] The device includes a molding base 1 and a ring-shaped gasket 2 arranged outside it, wherein the molding base includes 4 arc-shaped seats 11, and the arc-shaped seats 11 are arranged at intervals in a circle, and the distance between them is 3-4mm. The inner side of the shaped seat body 11 is connected with a lifting adjustment mechanism 3, and the arc-shaped seat body 11 realizes scaling in the radial range of the molding base 1 through the lifting adjustment mechanism 3; in this embodiment, the lifting adjustment mechanism includes a screw rod 301, and the A nut 302 is fixedly sleeved on the screw rod 301, and the nut 302 can be fixed by a self-locking nut. One end of the nut 302 is connected to the arc-shaped base body 11, and the other...

Embodiment 2

[0049] This embodiment provides a method for welding pipelines using the gas protection and forming device described in Embodiment 1, including the following steps:

[0050] Place the device under the pipe groove, and place the welding groove gap in the middle of the forming groove;

[0051] Adjust the nut, and push the arc-shaped base to squeeze outward through the rotation of the screw rod, so that the liner fits with the back of the tube;

[0052] Insert the ventilation hose into the air inlet placed under the tooling;

[0053] According to the length of the pipeline, choose to wrap the traction rope on the device;

[0054] Open the inert gas valve, perform gas shielding, and start welding;

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Abstract

The invention relates to the technical field of welding, and discloses a weld joint back surface gas protection and forming device for pipeline welding and application thereof. The device comprises a forming base and a gasket annularly arranged outside the forming base, wherein the forming base comprises a plurality of arc-shaped base bodies which are circularly arranged at intervals; the inner side of the forming base is connected with a lifting adjusting mechanism, so that the scaling of the forming base in the radial range can be implemented; the gasket comprises a forming groove and a gasket body which are connected up and down, wherein the forming groove is set to be of a structure that two sides are of a V shape and the bottom is chamfered in an arc mode; the gasket body is of a hollow structure; air holes communicated with the hollow portion of the gasket body are formed in the bottom of the forming groove at intervals in a penetrating mode; and the end portion of the gasket passes through through holes to extend inwards to form an air inlet. According to invention, the problems of weld joint back surface gas protection and weld joint forming are solved, meanwhile, the welding difficulty of a welder is reduced so as to improve the production efficiency, the amount of gas for weld joint back surface protection is reduced so as to reduce the production cost; and the weld joint back surface gas protection and forming device for pipeline welding has the practical value in practical significance.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a gas protection and forming device for welding the back of a weld and its application. Background technique [0002] With the large-scale application of stainless steel pipes in chemical industry, water supply system, food, nuclear industry, pressure vessels and other fields, the quality of welded joints of stainless steel pipes directly affects the safe service of products. Due to the poor protection of the back of the weld and the poor formation of the back of the weld, it has become an important reason for high welding rework rate, low welding production efficiency and failure of welded joints. Especially in the welding of some long pipelines under pressure or with corrosive media, the butt welding of elbows and straight pipes, and the welding of some "S"-shaped elbows, gas shielding and backside formation of welds are very important. [0003] At present, most of the publis...

Claims

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Application Information

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IPC IPC(8): B23K9/32
CPCB23K9/325
Inventor 沈旭刘志宏吴杰峰李波任睿马兆龙史磊朱孝东
Owner 合肥聚能电物理高技术开发有限公司
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