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Direct connection welding mounting process for stainless steel-lined composite pipes

An installation process, stainless steel technology, applied in welding equipment, welding/welding/cutting items, manufacturing tools, etc., can solve problems such as leakage and corrosion at pipe joints

Inactive Publication Date: 2014-04-23
WUHU XINLI PIPELINE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the lined stainless steel composite pipe is composed of two layers of different metal materials, how to effectively connect and install the pipes? It is the key to strictly ensure whether there is leakage and corrosion at the pipe joints, and it has also become a bottleneck restricting the popularization and application of lined stainless steel composite pipes

Method used

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  • Direct connection welding mounting process for stainless steel-lined composite pipes

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Embodiment Construction

[0021] The specific implementation manner of the present invention will be further described in detail below by describing the best embodiment with reference to the accompanying drawings.

[0022] as attached figure 1 As shown, the stainless steel-lined composite pipe body is composed of inner stainless steel and outer carbon steel, sawing and port beveling 45 0 ~60 0 After grinding, the lined stainless steel composite pipes A and B are axially aligned and then fixed respectively. The cross-sectional distance between the two pipes is about 1mm. After the inspection is correct, use ordinary carbon steel electrodes to evenly and densely cover the welded stainless steel welding layer and weld firmly.

[0023] The present invention has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods, as long as various insubstantial improvements are made using the c...

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Abstract

The invention discloses a direct connection welding mounting process for stainless steel-lined composite pipes. The process is characterized in that preparation before welding, welding material selection, a welding technology and the like are combined to realize direct connection welding mounting between the stainless steel-lined composite pipes. According to the process, the stainless steel-lined composite pipes can be conveniently rapidly and directly connected and mounted; an inner-layer pure stainless steel material after the welding of the stainless steel-lined composite pipes is integrated, so that the purity of a conveying medium after the direct connection welding mounting of the stainless steel-lined composite pipes is strictly ensured, and leakage and corrosion to pipe bodies after the direct connection welding mounting of the stainless steel-lined composite pipes are avoided.

Description

technical field [0001] The invention relates to the technical field of connection and installation of stainless steel composite materials, in particular to a direct connection welding installation process between lined stainless steel composite pipes. Background technique [0002] In the fields of oil refining, chemical industry, and urban and rural water supply, pipelines have become the most basic equipment for transporting various media. The carbon steel pipes commonly used in the past are not only easy to corrode, but also easy to corrode the conveyed medium. With the development of economy and society, the application of pure stainless steel pipes is becoming more and more common, but as we all know, pure stainless steel pipes are expensive, and nickel, the main element of stainless steel, has been globally deficient. [0003] In this game between performance and price, resources and quality, a new type of bimetallic composite pipe, that is, a stainless steel-lined com...

Claims

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Application Information

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IPC IPC(8): B23K28/02B23K9/173B23K9/23
CPCB23K9/173B23K9/0282B23K9/235B23K33/00B23K2101/06B23K2103/16
Inventor 汪正友
Owner WUHU XINLI PIPELINE TECH
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