Is the air conditioner copper pipe welded or welded?
The connection of air conditioning copper pipe interface mainly depends on the construction process level, and requires higher construction quality.The fittings for the air conditioner copper pipe need to buy the relevant fittings, and the installation will occupy a certain space, and the welding technology can not meet the requirement in space. In addition, not in the fire area, must be used with connector.The brazing connection mode of air conditioning copper tube requires good welding technology, low cost and little space for connection. In hot conditions, this method can not be used.The air conditioning copper pipe connection way mainly has the mechanical connection, the pipe fitting and the brazing connection, the pipe fitting.
How can the air conditioning copper tube and copper pipe be welded?Copper tube and copper tube welding is generally used silver electrode (its silver content is 25%, 15% or 5%) or copper and phosphorus series welding rod, they all have good fluidity, do not need welding flux. Specific welding procedures are as follows:1) welding copper tube processing: expansion and deburring, old copper pipe must also use abrasive paper to remove oxide layer and dirt. When the diameter of the welded copper pipe is different greatly, it is necessary to clamp the pipe with big diameter in order to ensure that the gap between welds should not be too large.2) nitrogen filling: the copper pipe is filled with nitrogen to carry out welding, which can make the inner wall of copper tube bright, clean and oxide free, so as to effectively control the cleanliness of the system.3) open the welding torch, adjust the mixture ratio of oxygen and acetylene, and choose neutral flame.4) first heated by the flame tube insertion, slightly hot after the flame moves outward a little casing, heating the pipe when the pipe joint uniformly heated to the welding temperature (micro solder (red), adding silver electrode or phosphorus brazing). By the solder melting temperature, and flame temperature maintaining outer flame pipe joints, and not using pre solder melt drip welding joints, then heating welding, otherwise it will affect the strength and density of joints.5) remove the flame and close the torch. Check the quality of the weld. If there is a gap or a sand heel in the weld, re weld the weld
