Electrode types
You can classify them as follows:
- Coating of the acid plan. To create this coating, metal oxides are used. It is possible to work with such a coating with alternating and direct current. Apply it to the steel, which contains a large percentage of sulfur and carbon is not worth it.
- Basic type coating. It is created with the help of fluorine and carbonite. This type is suitable for cooking thick walls.
- Coating cellulose type. With its help there is a possibility of cooking "from top to bottom".However, it must be ensured that the electrodes do not overheat, it is also possible to spray metal during the process.
- Rutile type coating. It differs in that the seams obtained have an increased degree of viscosity. In addition, the slag is removed very simply.
Preparing for welding
Before starting the cooking process, you must prepare. Perhaps the stage is more responsible than welding itself.
1. The pieces must have the same diameter.
2. The pipe sections must be free of deformation.
3. GOST requirements for composition should be met.
4. The ends should be cleaned of rust or dirt. Pipes should be as close as possible to each other. In the case of projections, they must be removed. With the help of a grinder or grinder. Also, for large volumes, a milling cutter can be used.
Welding process
Arc welding.
- The first thing to do is sticking, they are made crosswise across the electrodes, which will be used for the whole cooking process.
- Seams should be applied in a rotary position and have three layers.
- Pivoting position:
- The first seam is along the perimeter of the joint. Apply the best standard electrodes.
- After the first seam, each subsequent seam should be made with electrodes larger diameter than the previous one.
- First of all, the upper part is brewed, after which the piece turns around, and the lower part is brewed.
The process is different for plastic pipes. What electrodes should be used to make pipes of this kind? Since plastic pipes have become very popular, it is not surprising that more and more people are asking such a question. However, for them there is another device - namely a special soldering iron.
Use it carefully and carefully. Before you start working with the soldering iron, it is necessary to read the instruction, as the nuances are more than enough and much depends on the pipe itself( its dimensions, scope of application) and also on the apparatus itself( power, maximum temperature).However, it should be noted that the obtained seams after working with this device are characterized by increased strength and high service life, therefore this type of welding is gaining popularity, like the plastic pipes themselves.
