Although the shape of the elbow pipe of Dongguan precision casting is bent, the appearance is not as good as the pipe, but if the indoor space is small or the environment is relatively unique, its function is very valuable. In Dongguan precision casting, it is produced and processed at a later stage, so its production must undergo various production processing and forming. The following issues must be paid attention to when applying Dongguan precision casting:

1. To avoid indirect corrosion caused by heating, the welding current should not be too large and the arc should not be too long. The welding layer should be cooled quickly, and the welding seam should be narrow.

2. During the welding process, carbides will settle according to constant heating, thereby reducing corrosion resistance and mechanical properties.

3. When using similar chromium stainless steel electrodes, they should be heated to above 200°C and quenched to around 800°C after welding. If the heat treatment process cannot be completed, chromium-nickel stainless steel plate electrodes should be used.

4. When welding the elbow in AC welding, the melting depth is very shallow, and it is easy to turn red at the same time. Try to apply DC stabilized power supply.

5. If the same type of elbow is welded, heat it to above 300°C, and do a slow cooling treatment at around 700°C after welding. After welding, the strength is high and it is easy to cause cracks.

In fact, whether it is a elbow pipe made of precision casting in Dongguan or other pipes, because its appearance is in contact with the wall and the soil layer, and its interior is also in contact with various raw materials for transportation, its characteristics are very good. However, please master the preventive measures before application. Since other emergencies may continue to occur during the application process, the preventive measures can assist in solving some emergencies.