Welding method for heat radiating fin of heat exchanger and equipment thereof

Abstract

The invention is a method of welding cooling fins of a transducer, and its character: the end head of the stainless steel band is welt upright on the steel pine wall, then the steel pipes rotates at uniform speed to apply stretching prestress on the stainless steel band, the steel band is driven by the rotating steel pipe to be wound upright on the steel pipe, at the time of winding, the Wu electrode of an argon-arc welding gun aligns with the horizontal point of tangency between the stainless steel band and the steel pipe and at the time of welding, outputs current to stabilize the arc to weld the roots of the cooling fins. Its advantages: it can continuously weld 1.0 -1.5mm thick, 10-15mm wide steel bands upright on to a stainless steel pipe with a 40-60 mm diameter, and it has good welding effect and enhances heat conducting and transferring performances and prolongs service life of the transducer.

Description

technical field [0001] The invention belongs to a method and equipment for welding cooling fins of a heat exchanger. Background technique [0002] At present, the heat dissipation fin assembly process on oil and gas heat exchangers adopts a simple winding method, that is, a stainless steel strip with a thickness of 03-05 mm and a width of 10-15 mm is vertically wound on a steel pipe through a mold to increase heat transfer The heat exchange area of ​​the device. But it has the following disadvantages: 1. Only fins with a thickness of 03-05 mm can be wound. Because the fins are very thin, the heat conduction and heat dissipation are not good. 2. The contact connection structure between fins and tubes formed by winding makes the heat conduction effect not ideal. 3. After the heat exchanger has been used for a period of time, the fins will loosen due to heat extension and lose the heat conduction and heat exchange function. 4. The wrinkles produced by the fins affect the hea...

AI Technical Summary

Problems solved by technology

But it has the following disadvantages: 1. Only fins with a thickness of 03-05 mm can be wound. Because the fins are very thin, the heat conduction and heat dissipation are not good.

2. The contact connection structure between fins and tubes formed by winding makes the heat conduction effect not ideal

3. After the heat exchanger is used for a period of time, the fins become loose due to heat extension and lose the heat conduction and heat exchange function

4. The wrinkles produced by the fins affect the heat transfer effect

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