Gas welding method for ultra-thin stainless steel workpieces

A technology of stainless steel and stainless steel wire, applied in the direction of gas flame welding equipment, welding equipment, manufacturing tools, etc., can solve the problems of power supply, low productivity, and large environmental impact, and achieve simple operation methods, high work efficiency, and low labor intensity Effect

Inactive Publication Date: 2009-12-16
CHONGQING JIANSHE MOTORCYCLE CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

If the usual manual arc welding is used, it is impossible to achieve it because it is easy to weld through
At present, most of these workpieces use argon arc welding. Due to the high cost and high cost of argon arc welding equipment, and the need for power supply during work, the use is limited.
In addition, argon arc welding is greatly affec...

Method used

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  • Gas welding method for ultra-thin stainless steel workpieces

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Effect test

Embodiment 1

[0025] When the welding material is 1Cr18Ni9Ti, Φ25×1.2 mm acid tank heating tube, first use the usual method to remove the rust, oil stains, paint and other dirt in the welded area, and select the welding wire 1 with the brand name of 0Cr18Ni9Ti and a diameter of 1.5 mm. Apply type "101" solder powder to the wire and weld. Align the two acid tank heating tubes 2 and 4 that need to be welded, and position the two workpieces by spot welding. The distance between points during spot welding is 30 mm. The aperture of the welding tip used by the thick low carbon steel is small, and the present embodiment adopts the No. 4 welding tip of the small size, and welds the heating pipes of the two acid tanks with the heat dissipation method of the loose welding method or the rigid fixing method. When welding, weld in sections from the middle to both ends. There is no heat treatment after welding, and the performance of the weld is good.

Embodiment 2

[0027] The welding material is 1Cr18Ni9Ti, Φ60×0.8 mm engineering safety guardrail. First, use the usual method to remove the rust, oil stains, paint and other dirt in the welded area. "101" solder powder is applied to the wire and to the weld. Align the two acid tank heating tubes that need to be welded, and position the two workpieces by spot welding. The distance between the spots during spot welding is 30mm. The flame adopts a slight carbonization flame. The welding tip used by the carbon steel has a small aperture. In this embodiment, a small No. 4 welding tip is used, and the two acid tank heating pipes are welded by a loose welding heat dissipation method or a rigid fixing method. When welding, weld in sections from the middle to both ends. There is no heat treatment after welding, and the joint performance is good.

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Abstract

The invention relates to a gas welding method for ultra-thin stainless steel workpieces. The method is characterized by comprising the following steps: (1) cleaning a welded area; (2) adopting ultra-low carbon stainless steel wires as welding wires; (3) using spot welding to align two weldments, preventing dislocation, adopting a bulk welding method or a rigid fixation method and using slight carburizing flame for welding; and (4) cleaning/clearing welding powder or slag. The method is easy to control welding temperature, can guarantee welding quality, and has the advantages of simple equipment, low cost and no need for power supply.

Description

technical field [0001] The invention relates to a welding process, in particular to a gas welding method for ultra-thin stainless steel materials. Background technique [0002] Ultra-thin stainless steel workpieces refer to workpieces made of stainless steel materials with a thickness of less than 1.2 mm. When it is necessary to weld workpieces of the same thickness together in production, due to the ultra-thin material of such workpieces, welding is difficult. If the usual manual arc welding is used, it is impossible to realize it because it is easy to weld through. At present, most of these workpieces are welded by argon arc welding. Because the equipment of argon arc welding is expensive, the cost is high, and a power source is required during work, the use is limited. In addition, argon arc welding is greatly affected by the environment during welding. If welding is performed in an outdoor environment and encounters a large air flow, the required atmosphere of argon sh...

Claims

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Application Information

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IPC IPC(8): B23K5/02
Inventor 王小平
Owner CHONGQING JIANSHE MOTORCYCLE CO LTD
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