Main plate opposing connection welding method

A welding method and plate technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve the problems of light radiation pollution and little efficiency improvement, and achieve small droplet transition, fast melting speed, and deposition efficiency increased effect

Inactive Publication Date: 2009-01-14
中船海洋与防务装备股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this method, the efficiency is not greatly improved, and there is strong optical radiation pollution

Method used

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  • Main plate opposing connection welding method
  • Main plate opposing connection welding method

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Embodiment Construction

[0018] As shown in Figure 4, the two plates are butt welded. When welding, first closely butt the bottom of the welding groove 2 of the two plates 1 to be welded and fix them by spot welding in the groove; then, paste ceramics on the bottom of the joint through aluminum foil. Liner 3; Then, the thin welding wire 4 is simultaneously output to the two conductive tips of the welding torch through the wire feeder, so that the two thin welding wires are arranged side by side at a certain distance, and the two welding wires are energized and welded by submerged arc welding, and the weld seam is welded from bottom to top The whole weld is full.

[0019] During welding, the weld seam is submerged arc welded by two thin welding wires with a certain transverse distance, which effectively shunts the welding current while maintaining a large heat input, and distributes the current evenly to the two welding wires, effectively It avoids the problem that the liner is easy to burn through bec...

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Abstract

The invention discloses a butt-jointing and welding method of plates. The bases of the grooves of two plates which need to be welded are butt-jointed closely and are fixed in the groove through spot welding. A ceramic pad is stuck at the bottom of the butt-jointing place by an aluminum foil. Two parallel and separated thin welding wires are used to treat welding seam by submerged arc-welding. The butt-jointing and welding method effectively shunts the welding current to the two thin welding wires, not only improves the melting efficiency of the welding wire, but also avoids the excessive concentration of the active force of electric arc, not only has high welding efficiency, but also is easier to achieve a balance state to form the welding seam under the support of surface tension and the ceramic pad.

Description

Technical field: [0001] The invention relates to a welding method for butt-joining plate parts. Background technique: [0002] In the process of ship construction, no matter in the processing of the panel, subsection, general section or hull of the ship, a large number of plate splicing welding work is required. The welding workload of these plate splicing is extremely large, and the welding length is often It can reach several thousand meters or even longer, and its welding efficiency directly affects the construction period of the ship. [0003] CO 2 Gas shielded welding is a commonly used welding method. Its welding energy is low, and the melting speed of the welding wire is slow during welding. A certain gap needs to be reserved at the butt joint of the plates for welding seam forming. Since there is a gap between the butt plates, in order to make the plates on both sides stable after butt joint, it is necessary to use The type bracket supports and fixes the plates ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/18B23K9/02
Inventor 吴强麻孟锴
Owner 中船海洋与防务装备股份有限公司
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