Submerged-arc welding process of stainless steel composite steel plate

A composite steel plate, welding process technology, applied in welding equipment, arc welding equipment, welding/welding/cutting items, etc., can solve problems such as low production efficiency, reduce labor intensity, reduce production costs, and improve labor conditions.

Active Publication Date: 2010-07-14
LUXI IND EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the limited length of the welding rod, continuous welding is not possible, so the production efficiency is low, and the quality of the weld depends on the welder's operational skill level

Method used

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  • Submerged-arc welding process of stainless steel composite steel plate
  • Submerged-arc welding process of stainless steel composite steel plate
  • Submerged-arc welding process of stainless steel composite steel plate

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Technology of the present invention is:

[0019] 1) Groove 3 is processed, and the welded end of the stainless steel clad steel plate 1 to be welded is processed into groove 3; groove 3 is suitable for flat plate butt joints, longitudinal and circular seams of cylinders. The width of the middle part of the groove is 2±1mm or 6±1mm, the angle between the grooves of two opposite stainless steel composite steel plates is 65°±5°, the gap between the two opposite stainless steel composite steel plate grooves is 1±1mm, and the distance between the grooves and the stainless steel composite steel plates The surface distance of the composite layer of the steel plate is 9±1mm or 12±1mm, and the thickness of the stainless steel composite steel plate is 18-40mm. See figure 1 .

[0020] 2) Take the weld bead in the middle of the groove 3 as the base-level ...

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Abstract

The invention discloses a submerged-arc welding process of a stainless steel composite steel plate, which has the advantages that the labour intensity of welders can be effectively reduced, the labour condition, production efficiency and the welding quality are improved, the production cost is reduced, and the like. The invention comprises the following processes of: (1) processing a groove, i.e., processing the welding end of the stainless steel composite steel plate to be welded into a groove; (2) using the weld bead in the middle part of the groove as a bottoming weld line, using the weld bead at the upper part of the base layer bottoming weld line close to the stainless steel composite steel plate composite layer as the multicoat weld line and using the weld bead at the lower part of the base layer bottoming weld line as the base layer filling cap weld; (3) welding the base layer bottoming weld line by a traditional process; (4) welding the base layer filling cap weld by a traditional process; and (5) welding the multicoat weld line, wherein the welding current ranges from 350A to 400A, the welding voltage ranges from 28V to 30V and the welding speed ranges from 40cm/min to 50cm/min.

Description

technical field [0001] The invention relates to a submerged arc welding process, in particular to a submerged arc welding process of a stainless steel clad steel plate for welding transition layers and multiple layers of a stainless steel clad steel plate. Background technique [0002] In the welding of the transition layer and the clad layer of the traditional stainless steel clad steel plate (carbon steel, low alloy steel + 0Cr18Ni9), in order to reduce the dilution of the transition layer by the base layer and prevent the joint from producing martensitic structure and crack defects, the transition layer is often used High-chromium-nickel duplex chromium-nickel stainless steel electrodes with good dilution resistance are used for manual arc welding. However, manual arc welding operators have poor working conditions and high labor intensity. Due to the limited length of the welding rod, continuous welding is not possible, so the production efficiency is low, and the qualit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/18B23K9/12B23K101/16B23K103/16
Inventor 黄孝鹏高希改崔昌宇吴海伟
Owner LUXI IND EQUIP
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