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Butt welding assembly method for stainless steel tubes

A technology of stainless steel pipe and assembly method, which is applied in the direction of welding/welding/cutting articles, auxiliary devices, welding equipment, etc., can solve the problems of low efficiency, large consumption of argon gas, and difficult control of welding size, and achieve low precision requirements, The effect of reducing the amount of argon used and reducing the cost of use

Inactive Publication Date: 2021-03-02
CSSC MES DIESEL
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a butt welding assembly of stainless steel pipes by overcoming the disadvantages of difficulty in controlling the overall welding size of the butt weld assembly, large argon gas consumption, and low efficiency in the production process of the existing stainless steel pipe for marine diesel engines. Method, in the production process of the stainless steel pipe, based on the positioning of the embedded iron, the assembly of the butt weld is completed through the positioning of the stainless steel pipe fittings and the triangular iron embedded spot welding, so as to ensure the gap of the butt weld, avoid the oxidation of the inner wall of the weld, and improve the efficiency of assembly operations , The purpose of improving the quality of assembly

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  • Butt welding assembly method for stainless steel tubes
  • Butt welding assembly method for stainless steel tubes
  • Butt welding assembly method for stainless steel tubes

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings. All equivalent changes and modifications made according to the contents of this specification should belong to the technical scope of the application of the present invention.

[0026] The present invention is used for the butt weld assembly of stainless steel pipes. Several triangular inserts are placed in the butt welds between the circumferences of the stainless steel pipes, and the depth of the triangular inserts inserted into the butt welds is controlled to control the The size of the weld gap between the stainless steel pipes is kept consistent along the circumferential direction, and the spot welding is positioned at the contact position.

[0027] Please refer to figure 1 , image 3 and Figure 4 , the triangular inlay 2 is made of the same material as the stainless steel pipe 1, and the thickness, size and angle of the triangular inlay 2 are determined accord...

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Abstract

According to a butt welding assembly method for stainless steel tubes, multiple pieces of triangular embedded iron are placed in a butt welding seam between the circumferences of the stainless steel tubes, and by adjusting the depths by which the triangular embedded iron is inserted into the butt welding seam, the size of the welding seam gap between the stainless steel tubes is controlled and kept consistent in the circumferential direction, and spot welding positioning is conducted at the contact position. Argon filling protection is not needed, the operation efficiency is improved, the welding quality of the stainless steel tubes is improved, and the butt welding assembly method has the advantages of being simple in structure, convenient to use, low in process cost, high in precision and stability, wide in application range and the like.

Description

technical field [0001] The invention relates to the manufacture of marine diesel engine pipe fittings, in particular to a butt welding assembly method for stainless steel pipes, and belongs to the technical field of diesel engine manufacture. Background technique [0002] With the deterioration of the global environment and the strengthening of people's awareness of environmental protection, the requirements for controlling air pollution and greenhouse gas emissions are becoming increasingly stringent. The dual-fuel engine has become an important development direction of marine engines, and the material of the new dual-fuel main engine is made of stainless steel, which requires high precision. The butt joint structure of the flange and the round pipe has the characteristics of many weld seams and large welding deformation. In the traditional production process of stainless steel pipes, the back of the butt welding is filled with argon during the assembly process, and the tw...

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Application Information

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IPC IPC(8): B23K31/02B23K37/053
CPCB23K31/027B23K37/053B23K2101/06B23K2103/05
Inventor 王猛周文新毛瞻
Owner CSSC MES DIESEL
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