In the welding process of high-frequency brazing equipment used in refrigeration and air conditioning, non-ferrous materials such as copper and aluminum are generally used. In the process of manufacturing, installation and maintenance, the welding of pipelines is a key link. It not only affects the appearance, but more importantly affects the normal work of the system, which must be paid great attention to.

The selection of equipment generally adopts IGBT high-frequency induction heating equipment, the frequency is generally 20-30KHZ, the power of the equipment can be selected from 30KW-120KW according to the welding process.

The selection of solder refrigeration and air conditioning pipe fittings are mostly made of copper pipe. The commonly used solder types are copper phosphorus solder, silver copper solder, copper zinc solder and so on.

In welding according to the characteristics of pipeline materials, the correct choice of solder and skilled operation, to ensure the quality of welding. The brazing of copper with copper can choose phosphor copper solder or phosphor copper solder with low silver content, such as 2% or 5% silver-based solder. This kind of solder is cheaper, and has a good molten liquid, using the caulking and wetting process, no need for flux.

The welding of steel and steel can choose brass strip solder with appropriate flux. When welding, the solder will be heated to a certain temperature and inserted in the flux, so that the flux will be melted and attached to the solder, so it is particularly important to choose the solder in different welding processes!

Main equipment parameters

Main Features of equipment

1 using IGBT as the main device, full bridge inverter, perfect protection function, high reliability.

2 can be remote control and equipped with infrared temperature measurement, to achieve automatic temperature control, improve the heating quality and simplify the operation of workers.

3  replace oxyacetylene flame, coke furnace, salt bath furnace, gas furnace, oil furnace and other heating methods.

4  Adopt frequency automatic tracking and multi-channel closed-loop control, easy installation and easy operation.

5 equipment with voltage, current display, over voltage, over current, over temperature, lack of equal protection device.

6  the vibration speed is fast, heating, electric energy conversion efficiency is up to 97.5% or more, 30% than SCR equipment power saving.