Air-conditioning refrigeration connection copper pipe fittings and welding points

Air-conditioning and refrigeration pipe fittings are pressed or drawn seamless pipes with light weight, good thermal conductivity, and high low-temperature strength. They are often used to manufacture heat exchange equipment such as condensers, and are also used to assemble low-temperature pipelines in oxygen production equipment. Copper pipes with small diameters are often used to transport liquids such as pressured lubrication systems and oil pressure systems or as pressure measuring tubes for instruments.

The air-conditioning connecting pipe is light and economical: For the threaded pipe with the same inner diameter, the copper pipe does not need the thickness of ferrous metal, and the copper pipe takes up less space during installation, so the copper pipe is relatively more economical. Because the copper pipe is easy to process and connect, it can save material and total cost during installation, stability and reliability, and can save maintenance.

The air conditioner connecting pipe has a hard texture: it is not easy to corrode, and is resistant to high temperature and high pressure, and can be used in a variety of environments. In contrast, the shortcomings of other pipes are obvious. For example, the galvanized steel pipes used in residential houses in the past are very easy to rust. If they are not used for a long time, the tap water will turn yellow and the water flow will become small. The melting point of copper is as high as 1083 degrees Celsius, and the temperature of the hot water system is negligible for copper pipes.

Generally, the copper pipes of air conditioners are relatively thin. If you use too much force, it is easy to cause damage, and you should also pay attention not to face the copper pipe for a long time when welding, because the copper pipe is relatively thin, and it will be damaged in a short time. After melting, the copper pipe needs to be cooled with cold water after welding, so that there will be no oxidation problems. The inside of the copper pipe is protected by nitrogen, so there will be no oxidation. Do not use force to break the welding place. Prone to cracks.

When welding copper pipes, you must prepare things related to the welding technology, such as the fuel used for welding with welding rods, the combustor used for welding, etc., and the operation should be carried out after the preparation is complete. Don't find it in the welding process. The lack of this and that, so that there is no way to make the welding successful. When operating the gas cylinder, keep the gas cylinder upright. The distance between the oxygen cylinder and the natural gas cylinder, and the distance to the open flame must be more than five meters, so as to ensure safety. , The connection method of the welding torch and the gas cylinder should also be checked for correctness, and the relative distance should also be maintained. It is also very important for everyone to wear protective glasses during the operation. Ensure that the ventilation is smooth when welding, so that the welding can be carried out. The environment is safe and not prone to accidents.