7075 aluminum pipe is an auxiliary pipe used in industry. It is mainly used for the purpose of welding of large pipes. However, it is very firm when welding, but some people can't. What is the reason? Because they do not know the welding operation requirements of aluminum tubes, let's talk about the operation welding requirements of the 7075 aluminum tubes, so that the quality of the welded aluminum tubes is good.
1. Because the melting point of the electrode is too low, when the 7075 aluminum tube is welded, the welding torch cannot be used to heat the solder powder.
2. The aluminum tube is generally better for one-time welding. The aluminum tube is very easy to be deformed because of the low melting point of the aluminum tube.
3, the liner placed a wet towel, protection in place, because the welding space is very small, so be sure to pay attention to the protection of the refrigerator.
4, the torch flame can not be too long, and heated with a slight fire, otherwise the dispersant aluminum tube is very easy to melt.
5. After the welding is completed, it is necessary to wait for the special slurry of nylon wire for two or three minutes, and then the cement storage tank can be contacted, otherwise the solder joint is easy to leak.
6, evenly apply flux to ensure the quality of solder joints
7. The welding time of the aluminum tube should not be too long. Because the melting point is too low and the time is too long, it is easy to cause the aluminum tube wall to melt or thin, and the pressure is very easy to leak.
In short, in the process of welding the 7075 aluminum tube, it is necessary to pay attention to the welding requirements, so that the quality of the welded aluminum tube will be better.