One-step molding submerged arc welding method for steel sheet docking
A technology of submerged arc welding and thin plates, which is applied in welding equipment, welding accessories, arc welding equipment, etc., and can solve problems such as longitudinal deformation of thin plates
Inactive Publication Date: 2014-05-28
TIANJIN XINGANG SHIPBUILDING HEAVY IND
View PDF8 Cites 10 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] In order to solve the problems existing in the above-mentioned technologies, the object of the present invention is to provide a one-time forming submerged arc welding method for the butt joint of steel sheets to solve the problem of longitudinal deformation in sheet welding
Method used
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
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] The operation process of the one-time forming submerged arc welding method for butt jointing of thin steel plates of the present invention will be described in conjunction with the accompanying drawings.
[0025] This method is aimed at the reason why thin plate welding is easy to produce longitudinal deformation. After repeated tests, from the perspective of reducing welding deformation and restraint stress, the input of large current single wire is changed to small current double wire input, and double-sided welding is changed to back welding. One-sided welding and double-sided molding with ceramic liner attached, welding is carried out.
[0026] Such as figure 1 , 2 , 3, 4, and 5, the specific operation steps of steel plate 1 welding are as follows:
[0027] 1) first as figure 1 As shown in Fig. 1, first spread the steel plates 1 to be joined on the welding platform, check whether the joints are smooth and straight, and regrind if necessary.
[0028] 2) Setting t...
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
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
Login to View More
Abstract
The invention provides a one-step molding submerged arc welding method for steel sheet docking. The one-step molding submerged arc welding method includes: evenly paving steel sheets to be docked on a welding platform, and examining whether welding lines of steel sheets to be welded are even and straight; setting gaps; fixing by welding and setting fixing points; applying an end tab and slotting as regulated; fixing a ceramics backing on the reverse side of a welding bead; performing welding, namely paving a submerged arc welding machine walking trolley track and performing timely site adjustment according to walking speed of a submerged arc welding machine and situations of wire feeding transmission and welding flux delivery during welding. The one-step molding submerged arc welding method has the advantages that a double-side welding mode adopted in traditional submerged arc welding is broken through, the problem about concentration of arc heat is solved, the problem about high welding heat transmission is solved, and constraint stress generated from welding is reduced; the ceramics backing is adhered to the reverse side, so that the problems of welding deformation and welding stress brought by twice welding are solved; by the method, electric arc is distracted, heat input is lowered, heat deformation is reduced, and welding line can be formed at one step.
Description
technical field [0001] The invention relates to a one-shot forming submerged arc welding method for butt jointing of thin steel plates. Background technique [0002] With the continuous update of the concept of "green and environmental protection" in the international shipbuilding industry, the choice of ship steel plate thickness is more and more inclined to meet the minimum plate thickness under the strength. A large number of 6-10mm thin plates are used for the deck, so the effective control of the welding deformation of the thin plates is a problem that has been troubled by domestic counterparts. The traditional submerged arc welding method of steel plate butt joint adopts two-side welding method, and the weld bead needs to receive welding heat input twice, which is easy to produce large longitudinal deformation of the weld bead, and it is difficult to correct the deformation of the thin plate. In addition, single-wire submerged arc welding is used, the heat of the weld...
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
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/18B23K9/133B23K9/32
CPCB23K9/188B23K9/0356B23K2101/185B23K2103/04
Inventor 齐振聪夏晓萍胡术朋张明高
Owner TIANJIN XINGANG SHIPBUILDING HEAVY IND