Double-sided forming welding process of FGB process one-sided submerged arc welding

A single-sided welding double-sided, welding process technology, applied in welding medium, welding equipment, welding equipment and other directions, can solve the problems of welding quality relying on welders, difficult to guarantee welding quality, low efficiency, etc., to save labor costs and improve welding Efficiency, easy on-site operation

Active Publication Date: 2017-02-15
武汉天高熔接股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

More traditional artificial CO is now used 2 The semi-automatic submerged arc welding filling and covering welding technology of backing is low in efficiency, and the welding quality largely depends on the welder's operation, so the welding quality is difficult to guarantee

Method used

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  • Double-sided forming welding process of FGB process one-sided submerged arc welding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, the present invention provides a kind of FGB submerged arc single-sided welding double-sided forming welding process, comprising the following steps:

[0027] S1. Use a grinder to grind two steel plates with a thickness of 6mm to be welded to give a metallic luster to the groove and the parts with a width of 20mm on both sides of the groove. Wipe the polished place with absorbent paper or a dry rag to remove moisture or dust. Layer, etc., butt the two polished steel plates 1 to form an I-shaped groove with a gap of 0 mm, and control the staggered side and hypotenuse of the two steel plates 1 to be 0 mm;

[0028] S2. On the bottom surface of the groove, paste a glass fiber cloth 2 with a width of 50 mm and a thickness of 0.8 mm centering on the center line of the groove, and repeatedly scrape and press the ceramic liner block 3 along the direction parallel to the groove, so that The glass fiber cloth 2 is closely attached to the bottom surface...

Embodiment 2

[0031] Such as figure 1 As shown, the present invention provides a kind of FGB submerged arc single-sided welding double-sided forming welding process, comprising the following steps:

[0032] S1. Use a grinder to polish two pieces of steel plates to be welded with a thickness of 6mm to give a metallic luster to the groove and the parts within the width of 15-30mm on both sides of the groove. Wipe the polished place with absorbent paper or a dry rag to remove Moisture or ash layer, etc., butt the two polished steel plates 1 to form an I-shaped groove with a gap of 1 mm, and detect the misalignment and hypotenuse of the two steel plates 1 to be welded to be 2 mm;

[0033] S2. On the bottom surface of the groove, paste a glass fiber cloth 2 with a width of 50 mm and a thickness of 1.5 mm centering on the center line of the groove, and repeatedly scrape and press the ceramic liner block 3 along the direction parallel to the groove, so that The glass fiber cloth 2 is closely atta...

Embodiment 3

[0036] Such as figure 1 As shown, the present invention provides a kind of FGB submerged arc single-sided welding double-sided forming welding process, comprising the following steps:

[0037] S1. Use a grinder to grind the two steel plates to be welded with a thickness of 12mm to give a metallic luster to the groove and the parts within the width of 15-30mm on both sides of the groove, and wipe the polished place with absorbent paper or dry rag to remove Moisture or dust layer, etc., butt the two steel plates to be welded 1 after grinding to form an I-shaped groove with a gap of 0mm, and control the staggered side and hypotenuse of the two steel plates to be welded 1 to be 0mm;

[0038] S2. On the bottom surface of the groove, paste a glass fiber cloth 2 with a width of 50 mm and a thickness of 1.0 mm centering on the center line of the groove, and repeatedly scrape and press the ceramic liner block 3 along the direction parallel to the groove, so that The glass fiber cloth ...

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Abstract

The invention discloses a double-sided forming welding process of FGB process one-sided submerged arc welding. The process comprises the steps of: S1, butt-jointing ground two to-be welded steel plates to from a groove; S2, adhering a liner; and S3, when the groove is a V-shaped groove, filling alloy powder and then covering the groove with sintered flux and when the groove is an I-shaped groove, covering the groove with sintered flux, and pulling a welding wire for submerged-arc welding for automatic primary formed welding through a submerged arc welding machine for the I-shaped groove or the V-shaped groove covered by the sintered flux, wherein the welding parameters are as follows: the welding current is 400-1200A, the welding voltage is 25-45V and the welding speed is 10-80cm/min. By improving the composition ratio of raw materials of the sintered flux, the alloy powder and the ceramic liner, different welding modes are adopted due to different thicknesses of the welded steel plates; angular deformation is effectively avoided on the basis of improvement of the welding efficiency, and the process has the beneficial effects of simple field operation and wide application range.

Description

technical field [0001] The present invention relates to the field of welding. More specifically, the present invention relates to a FGB submerged arc single-side welding double-side forming welding process. Background technique [0002] In the splicing construction of ship decks and curved panels, bridge steel structure decks, or other similar steel structure panel construction operations, the efficiency of panel welding is the unanimous pursuit of everyone. The use of FCB method (plane segmented assembly line) welding equipment can indeed improve the efficiency of steel plate splicing to a large extent, but this equipment is expensive and the post-maintenance cost is extremely high. Relatively low-cost twin-wire welding equipment, but most of the twin-wire welding requires steel plates to be turned over for welding, which reduces efficiency. Some positions are not suitable for turning over operations, especially in the splicing of bridge decks. More traditional artificial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/18B23K9/235B23K33/00B23K35/30B23K35/362B23K9/035B23K101/18B23K103/04
CPCB23K9/035B23K9/18B23K9/235B23K33/004B23K35/3073B23K35/3602B23K35/362B23K2101/185B23K2103/04
Inventor 屠涛雄汪小根李华胡文喜易武强
Owner 武汉天高熔接股份有限公司
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