Welding method for ultra-thin composite layer low-carbon steel - austenitic stainless steel multiple tube adaptor

A technology of austenitic stainless steel and welding method, which is applied to the welding of low carbon steel composite materials and the field of stainless steel, which can solve the problems of complicated welding process and easy mistakes.
CN1546267AActive Publication Date: 2004-11-17XI AN JIAOTONG UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2004-11-17

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Abstract

The invention discloses a welding method for low carbon steel-austenite stainless steel compound pipe of ultra-thin stainless composite bed. The character is: the welding is completed with transition layer welding seam and base layer welding, it hasn't single stainless steel composite bed seam; the welding rod for low carbon steel base layer seam is the same to the one for mother metal; the first welding for stainless steel composite layer and the transition layer between the stainless composite layer and the low carbon steel base layer use argon tungsten-arc welding with back argon filling protection, or uses manual arc welding; the welding wire or welding rod use stainless steel in order to form the transition welding seam; after the transition welding seam is completed, the second time uses manual arc welding to weld the low carbon steel base layer, the welding rod uses low carbon steel in order to form base layer welding seam.
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Description

technical field

[0001] The invention relates to a welding method of stainless steel and low-carbon steel composite materials, in particular to a welding method of a low-carbon steel-austenitic stainless steel composite pipe with an ultra-thin-wall stainless steel composite layer. Background technique

[0002] No similar stainless steel-carbon steel composite pipe welding method has been found through patent retrieval. In the current general stainless steel-carbon steel composite pipe, the thickness of the stainless steel composite layer is generally more than 2mm, while the thickness of the stainless steel composite layer involved in the present invention is less than 1mm, and This type of composite pipe is widely used, but the corresponding welding method has not yet been searched. Because the low-carbon steel-austenitic stainless steel composite pipe with ultra-thin-wall composite layer has certain difficulties in welding, mainly how to ensure the same corrosion resistance...

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
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