Solar heat conduction pipe surface processing method

Abstract

The invention provides a solar heat conduction pipe surface processing method. According to the method, firstly a heat conduction pipe is placed into a copper chemical polishing brightener to be soaked for 2-5 minutes, taken out to be washed out through running water, placed into hot water to be processed and vertically hung up after an oxide layer is removed; a condensing end is sequentially placed into a dark nickel groove and a bright nickel groove to be powered on for 2-6 minutes and placed into running water to be cleaned after nickel plating is conducted; the electroplating portion of the heat conduction pipe is placed into a nickel plating sealing agent, and a protection layer is formed on the electroplating portion; the condensing end of the heat conduction pipe on which the protection layer is plated is cleaned through running water and then processed through hot water, dried, checked and packed. According to the method, the copper chemical polishing brightener processes the oxide layer, copper pipe surface oxide layer processing and forming the protection layer on the copper pipe surface are integrated, the processing effect is good, the cost is low, and the splashed-out solution is easy to process; two layer of nickel are plated on the condensing end, the oxidation resistance and the heat collection performance of the condensing end are improved, the service life of the heat conduction pipe is prolonged, waste water is less and easy to process, and all the waste water can be repeatedly used.

Description

technical field [0001] The invention relates to the technical field of solar energy, in particular to a surface treatment method of a solar heat pipe. Background technique [0002] The solar heat pipe is made of metal material. In the process of production and manufacturing, there are several heating processes, so the surface of the heat pipe has a dark oxide layer. The oxide layer on the surface must be treated to ensure that the heat pipe is in good condition. heat conduction effect. In the prior art, traditional processing methods are generally used to treat these oxide layers, but in the process of processing, the performance of the heat transfer tube will be more or less affected. Because the inside of the heat transfer tube is a vacuum, the traditional process uses While treating the oxide layer with strong acid, it will inevitably corrode the heat pipe itself and the weld, reducing the oxidation resistance and thermal conductivity of the heat pipe. Contents of the ...

AI Technical Summary

Problems solved by technology

In the prior art, traditional processing methods are generally used to treat these oxide layers, but in the process of processing, the performance of the heat transfer tube will be more or less affected. Because the inside of the heat transfer tube is a vacuum, the traditional process uses While treating the oxide layer with strong acid, it will inevitably corrode the heat pipe itself and the weld, reducing the oxidation resistance and thermal conductivity of the heat pipe