Stainless steel tube with welding bevel model, welding method and argon shield apparatus

A stainless steel pipe and welding bevel technology, which is applied to welding equipment, pipes/pipe joints/fittings, pipes, etc., can solve the problems of poor back forming effect, uneven weld reinforcement, affecting fluid performance, etc., and achieve inner wall cleaning , The inner wall weld reinforcement is uniform, and the effect of ensuring the quality of weld formation

Inactive Publication Date: 2009-11-25
SICHUAN KEXIN MECHANICAL & ELECTRICAL EQUIPCO
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Problems solved by technology

However, due to the inherent physical properties of the flux-cored wire, the backside molding effect is poor, and the weld reinforcement is uneven, whi

Method used

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  • Stainless steel tube with welding bevel model, welding method and argon shield apparatus
  • Stainless steel tube with welding bevel model, welding method and argon shield apparatus
  • Stainless steel tube with welding bevel model, welding method and argon shield apparatus

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Embodiment Construction

[0033] Such as figure 1 , figure 2 , image 3 As shown, a stainless steel pipe with a welded groove type, one end of the stainless steel pipe 1 has an arc-shaped groove 2 on the wall, and the arc-shaped grooves 2 of adjacent stainless steel pipes are put together to form a U-shaped groove 3. The groove angle a of the arc-shaped groove 2 is 20°, the thickness of the blunt edge of the arc-shaped groove is 2 mm, and the width of the blunt edge of the arc-shaped groove is 1 mm. The size of the item can ensure the quality of the weld seam of the steel pipe wall in the self-fluxing welding of the stainless steel pipe, especially the size of the blunt edge of the arc-shaped groove is increased to 2mm, so as to ensure that the self-fluxing metal of the stainless steel pipe base material is used to fill the welding The bottom weld seam ensures the forming quality of the weld seam on the inner wall of the stainless steel pipe. The inner wall of the steel pipe at the arc-shaped groov...

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Abstract

The invention discloses a stainless steel tube with welding bevel model. One end of the stainless steel tube is provided with an arc bevel. The arc bevels of the adjacent stainless steel tubes are jointed together to form a U shaped bevel. Meanwhile, the invention also discloses a welding method of the stainless steel tube and an argon shield apparatus used in the welding method. The invention has good weld joint molding effect and uniform weld joint reinforcement. The invention is mainly applied to the austenitic stainless steel welding in the fields of petroleum, chemical industry, metallurgy, machinery and naval construction.

Description

technical field [0001] The invention relates to the field of stainless steel pipe-pipe welding engineering, in particular to a welding method and technology for thick-walled pipe ring seam joints, such as power pipeline systems such as gas pipelines of gas turbines. The invention mainly relates to a welding groove Types of stainless steel pipes, the pipe welding method and the argon protection device used in the welding method. Background technique [0002] The welding of stainless steel pipes usually adopts single-sided welding and double-sided forming technology, which is usually composed of three parts: bottoming, filling welding and covering. The seam is easily oxidized, and the forming quality of the back side directly affects the qualified rate of weld flaw detection, and the weld reinforcement also affects the fluid performance of the pipeline during use. At present, the commonly used welding methods mainly include manual argon arc welding (TIG) and metal arc welding...

Claims

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Application Information

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IPC IPC(8): F16L9/02F16L13/02B23K33/00B23K9/16
Inventor 王晓明李新李修道
Owner SICHUAN KEXIN MECHANICAL & ELECTRICAL EQUIPCO
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