Longitudinal seam red copper liner welding process of steel sheet pressure vessel and red copper liner used by same

A pressure vessel and welding process technology, applied in the field of pressure vessel welding process, can solve the problems of high repair rate, increased product manufacturing cost, large consumption of flux materials, etc., and achieve the effects of saving flux materials, improving manufacturing quality, and reducing production costs

Inactive Publication Date: 2014-11-05
江门市新会区同达化工机械制造有限公司
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  • Application Information

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Problems solved by technology

[0006] (1) The surface shape of the longitudinal weld in the cylinder is not ideal, such as the weld seam has surface defects such as undercut, slag inclusions, unsmooth transition with the base metal, and weld bead;
[0007] (2) The q...

Method used

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  • Longitudinal seam red copper liner welding process of steel sheet pressure vessel and red copper liner used by same
  • Longitudinal seam red copper liner welding process of steel sheet pressure vessel and red copper liner used by same
  • Longitudinal seam red copper liner welding process of steel sheet pressure vessel and red copper liner used by same

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Embodiment Construction

[0032] Please also see figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 , the steel thin plate pressure vessel longitudinal seam copper liner welding process of the present invention includes the following points:

[0033] (1) Select a suitable copper pad 10 .

[0034] The copper pad 10 is block-shaped. It should be noted that the surface of the copper liner 10 that contacts and welds with the processing cylinder 20 is the upper end surface 11 of the copper liner 10 , which is a convex curved surface. The opposite surface of the upper end surface 11 of the copper liner 10 is the lower end surface 12 of the copper liner 10 . The cross-section of the red copper gasket 10 is the orthographic plane surrounded by the upper end face 11, the lower end face 12 and the two sides adjacent to the two straight sides of the upper end face 11, and the height a of the cross-section is the upper end face The average distance from the two straight sides of 11 to the lower end s...

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Abstract

The invention discloses a longitudinal seam red copper liner welding process of a steel sheet pressure vessel. The longitudinal seam red copper liner welding process sequentially comprises the steps of (a), aligning and splicing a longitudinal seam of a machined cylinder and carrying out point welding fixation; (b), placing the inner longitudinal seam of the machined cylinder on a red copper liner; (c), aligning the longitudinal seam of the machined cylinder to the center line of a welding groove of the red copper liner, fixing the machined cylinder and the red copper liner through an air cylinder, and guiding water into a cooling water pipe of the red copper liner; (d), carrying out welding; (e), disassembling the machined cylinder after the longitudinal seam of the machined cylinder is welded. The welding process has the advantages that automatic submerged arc welding of one-side welding and two-side forming is achieved, the RT flaw detection qualification rate is high, welding flux is saved, the manufacturing quality of the steel sheet pressure vessel is improved, and the production cost is lowered.

Description

technical field [0001] The invention relates to a welding process of a pressure vessel, in particular to a welding process of a red copper liner for a longitudinal seam of a steel sheet pressure vessel and the used red copper liner. Background technique [0002] The diameter of the steel sheet pressure vessel is generally 250-600mm, the material is Q235-B, and the wall thickness is 3-5mm; it is used in the production of industrial and mining enterprises, mainly including air compressor storage tanks, air purification series degreasers, and oil-gas separators , Flange air filter, air heat exchanger and other products. [0003] At present, steel sheet pressure vessels are widely used in my country's industrial production, and the demand is huge. In recent years, the number of steel sheet pressure vessels manufactured by our company has increased by 30% every year, and the annual output has exceeded 10,000 units. Since the welding of the longitudinal seam and the circumferent...

Claims

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Application Information

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IPC IPC(8): B23K9/035B23K9/025B23K9/18B23K9/235B23K9/32
CPCB23K9/035B23K37/003B23K2101/10
Inventor 谢坚鎏张德光谭远强李永欣汤汝壮谈振忠
Owner 江门市新会区同达化工机械制造有限公司
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