Protection device for gas-protective welding

A protective device and gas shielding technology, applied in welding equipment, welding accessories, arc welding equipment, etc., can solve the problems of high cost, large gas consumption, difficult to effectively control, etc., and achieve welding quality improvement, cost reduction, and simple structure Effect

Inactive Publication Date: 2011-05-18
SHANGHAI MORIMATSU PHARMA EQUIP ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the gas shielded welding of the installation, production and maintenance of tee pipes and intersecting line welds of two rotary surfaces, because the limbs cannot enter the narrow and irregularly shaped inner cavity, corresponding The cavity is continuously provided and filled with the required shielding gas; the gas consumption is large, and the gas concentration and gas temperature near the weld are difficult to effectively control; the welding quality of the weld will be guaranteed by the consumption of a larger amount of shielding gas, and the cost very high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as figure 1 As shown, the protection device of the present invention for gas shielded welding of three-way pipe intersecting line welding includes a gas control valve 9, a gas pipe 8, a conversion joint 7, a centering cover plate 5, a gas guide rod 4, and a supporting rib 2. , Sealing cover 1.

[0043] The shielding gas flows in through the air pipe 8. A gas control valve 9 is provided at the entrance of the air pipe 8 to control the flow and flow rate of the shielding gas. The two ends of the adapter 7 are threaded pairs to connect the air pipe 8 with the connecting rod 4; The air guide rod 4 has an external thread structure and is fixed to the centering cover plate 5 by a nut 601.

[0044] The connecting air rod 4 is a hollow structure, and the evenly distributed air outlet 402 is provided on the wall of the connecting air rod 4 to fill the protective gas in the connecting air rod 4 into the gas protection cavity 10; the connecting air rod 4 has a built-in wire The n...

Embodiment 2

[0048] Such as figure 2 As shown, the protection device of the present invention for the gas shielded welding of the welding seam of the intersecting line of two rotating curved surfaces of the elliptical head includes a gas control valve 9, a gas pipe 8, a conversion joint 7, a centering cover plate 5, and a gas guide rod 4, Support rib 2, seal cover 1.

[0049] The shielding gas flows in through the air pipe 8. A gas control valve 9 is provided at the entrance of the air pipe 8 to control the flow and flow rate of the shielding gas. The two ends of the adapter 7 are threaded pairs to connect the air pipe 8 with the connecting rod 4; The air guide rod 4 has an external thread structure and is fixed to the centering cover plate 5 by a nut 601.

[0050] The connecting air rod 4 is a hollow structure, and the evenly distributed air outlet 402 is provided on the tube wall of the connecting air rod 4 to fill the protective gas in the connecting air rod 4 into the gas protection cavity...

Embodiment 3

[0055] Such as Figure 4 As shown, the protection device of the present invention for the gas shielded welding of the intersecting line of two rotating curved surfaces of an elliptical head includes a gas control valve 9, a gas pipe 8, a conversion joint 7, a centering cover plate 5, and a gas guide rod 4. Support rib 2, seal cover 1.

[0056] The shielding gas flows in through the trachea 8. A gas control valve 9 is provided at the entrance of the trachea 8 to control the flow and velocity of the shielding gas. The two ends of the adapter 7 are threaded pairs to connect the trachea 8 and the connecting rod 4; The air guide rod 4 and the centering cover plate 5 are firmly connected by an eccentric sleeve 602.

[0057] The connecting air rod 4 is a hollow structure, and the evenly distributed air outlet 402 is provided on the wall of the connecting air rod 4 to fill the protective gas in the connecting air rod 4 into the gas protection cavity 10; the connecting air rod 4 has a built...

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Abstract

The invention provides a protection device for gas-protective welding, comprising a gas pipe, a centering cover plate, a gas connecting-guide rod, a supporting rib and a sealing cover plate, wherein the sealing cover plate is connected with the supporting rib, the lower end of the gas connecting-guide rod is flexibly connected with the supporting rib; the gas connecting-guide rod is fixed with the centering cover plate via a fastening mechanism and is connected with the gas pipe; the gas connecting-guide rod is in a hollow structure, the pipe wall of the gas connecting-guide rod is provided with a gas outlet hole; the centering cover plate is provided with an exhaust hole; and the sealing cover plate is made of elastic material. When the protection device provided by the invention is utilized to perform gas protection on the welding for a weld seam of an intersecting line of two revolving curved surfaces, the protective gas can be saved considerably and provided constantly, stably anduniformly, thus the welding quality at the weld seam is dramatically raised and the cost is lowered. The protection device provided by the invention is also applicable to the gas-protective welding for three-way pipes with different diameters, materials and specifications and for the weld seam of the intersecting line of two different revolving curved surfaces.

Description

Technical field [0001] The invention relates to a protective device for gas shielded welding, in particular to a protective device for gas shielded welding of three-way pipes and intersecting lines of two rotating curved surfaces. In particular, it is a protective device for gas shielded welding of three-way pipes of special materials such as stainless steel pipes and even zirconium pipes and two intersecting lines of revolving curved surfaces. Background technique [0002] In the gas shielded welding of stainless steel three-way pipes and the welds of the intersecting lines of two revolving curved surfaces, the usual gas protection method is to continuously fill the required shielding gas in the pipe cavity to be welded to ensure protection during the welding process The gas forms a local gas protection layer around the arc to prevent the intrusion of gases harmful to the droplet and molten pool, ensuring the stability of the welding process; and the compression of the arc colum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/32B23K9/16
Inventor 陈俊鑫李小平范家鸿谢伟
Owner SHANGHAI MORIMATSU PHARMA EQUIP ENG
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