Gas protecting device for welding

A technology of air inlet and air outlet, which is applied in the field of gas protection devices, can solve the problems of weakening of weld strength and corrosion resistance, unprotected welding area, and inability to isolate air in the weld area, so as to reduce chronic radioactivity. The effect of preventing disease and preventing threats

Inactive Publication Date: 2015-06-24
SHANDONG LIJIU SPECIAL PURPOSE ELECTROMOTOR CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, gas shielded welding often has poor gas shielding, so that the air erodes the molten pool and causes the weld metal to be oxidized, and the weld area cannot be effectively isolated from the air, so that the weld area cannot be protected, resulting in holes and other defects , so that the weld strength, corrosion resistance and other properties are greatly weakened, so that good welding quality cannot be obtained
Even void weldments of some expensive materials
Moreover, the light radiation and harmful gases produced during the welding process are harmful to the human body.

Method used

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  • Gas protecting device for welding
  • Gas protecting device for welding

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Embodiment Construction

[0009] The present invention will be further described below in conjunction with accompanying drawing:

[0010] Such as figure 1 , 2 As shown, the present invention relates to a gas protection device for welding, which consists of an operating door 1, a cover shaft lug 2, a gasket 3, a handle 4, a sight glass 5, an operating hole 6, an air inlet hole 7, an air outlet hole 8, The pressure gauge 10, the cooling water inlet 9, and the cooling water outlet 11 are characterized in that: the whole device is a cylindrical design, and one end is provided with an operating door 1, and the operating door 1 is connected to the cylindrical part through the cover lug 2, and the operation There is a handle 4 on the door 1, a sealing ring 3 is arranged between the operating door 1 and the cylinder, three viewing mirrors 5 and two operating holes 6 are evenly distributed in the middle part of the outer circle of the cylinder, and there is also an inlet on the outer circle of the cylinder. A...

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Abstract

The invention relates to a gas protecting device for welding. An operating hole, a gas hole, a sight glass and the like through which staff can perform welding conveniently are arranged. The gas protecting device is characterized in that a workpiece and outside air are totally isolated through the whole device, and a welding area is isolated from workers. Due to the structure, not only can existence of hydrogen in a welding joint be effectively suppressed and hydrogen holes and cracks be prevented, but also harmful effects of nitrogen in air on molten drops and metal of a molten pool can be effectively prevented. Due to the structure, harm to operators can be reduced, and a tidy and high-quality welding bead uniform in clarity and smooth in surface can also be obtained. The gas protecting device is particularly suitable for welding needing gas protection, simple in structure, convenient to manufacture and maintain, economical and practical.

Description

technical field [0001] The invention relates to a protective device, in particular to a gas protective device for welding. Background technique [0002] We know that various welding methods have been widely used in chemical machinery, pressure vessels, automobiles, shipbuilding, engineering machinery, aerospace and other fields. However, gas shielded welding often has poor gas shielding, so that the air erodes the molten pool and causes the weld metal to be oxidized, and the weld area cannot be effectively isolated from the air, so that the weld area cannot be protected, resulting in holes and other defects , so that the weld strength, corrosion resistance and other properties are greatly weakened, so that good welding quality cannot be obtained. Even make some weldments of expensive materials invalid. And the light radiation in the welding process and the harmful gas produced have certain harm to the human body. Therefore, when performing gas shielded welding, it is nece...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K37/00
CPCB23K37/006
Inventor 张成于丽娜
Owner SHANDONG LIJIU SPECIAL PURPOSE ELECTROMOTOR CO LTD
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