If it is manual arc welding, first of all, pay attention to distinguish molten iron and coating. Observe the molten pool: the shiny liquid is molten iron, and what floats on it and flows is the coating.
When welding, pay attention to not let the coating exceed the molten iron, otherwise it is easy to get slag, and you need to control the welding handle by hand to adjust the angle of the welding rod.
Also, if you feel that the technique is okay, you can use a higher current, because the high current can better distinguish the coating from the molten iron, and the welding will be more transparent, but you must be able to control it. The current of vertical welding is smaller than that of flat welding, and the current of overhead welding is smaller than that of vertical welding.
When welding, find a posture that is both comfortable and able to complete the weld at one time, and learn to use your wrist to control the welding handle. If it is carbon dioxide welding, the first thing to pay attention to is to always observe the molten pool during the welding process, and it is best to use one-way control, and the gas flow rate is generally 18-20. If there is no unitary control, it must be adjusted according to the welding process. If the welding wire does not melt or does not melt well, the voltage should be adjusted higher, or the current should be lowered. If the welding wire melts in large drops or the melting area of the capacity pool is too large, it means that the voltage is too large.
If it is a tungsten electrode, it is similar to oxygen welding, but also pay attention to that the extension length of the tungsten electrode should not be too long, and the shape of the head of the tungsten electrode should be maintained. Note that electric welding cannot be operated in windy places, which will have a great impact on welding quality. The cleanliness of the weldment must be guaranteed and safety must be paid attention to.
The essence is: control the melting pool and keep the melting pool in an elliptical shape under any circumstances. Then you’re done welding! You have to know which is molten iron and which is the coating. This is the basic. First of all, you have to know which is the molten iron and which is the coating. This is the basic. After knowing the molten iron, it can be said that you have initially learned electric welding. Everything is based on this foundation.
The angle does not need to pursue 45 degrees, we all know it, but it is affected by objective reasons, such as the magnitude of the current. location of weldments, etc. Just take care of the molten iron and control the capacity pool and it will be OK. The most important thing is to weld more! A good welder cannot be trained overnight. It takes a lot of welding rods to pile up!
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Post time: Jun-02-2023
