How do novices learn to weld quickly?

First of all, the welding skills of beginners are as follows:

When welding, keep your hands smooth, and your arms must be clamped to avoid shaking, so as to weld evenly and beautifully.

When welding, the included angle between the coated electrode and the iron plate is kept at 45 degrees, which is beneficial to the uniform distribution of molten iron and the sintered coated electrode is smooth. In overhead welding, because molten iron is easy to fall off, it is necessary to adopt spot welding to make the welding more firm.

When covered electrode moves to the top of the weld, it moves in a circle at the arc pit until the arc pit is filled, and then the arc is broken.

When replacing covered electrode or temporarily stopping arc-closing, when covered electrode moves to the welding end, stop at the arc pit for a while, slowly lift the arc, and then lead it to the parent metal groove at the edge of the weld. At this time, the molten pool will gradually shrink, and there are generally no defects after solidification.

Second, covered electrode operation taboo:

It is not easy for beginners to master the tapping method of carrying steel bars, and it is easy to have arc extinguishing or short circuit, which is also the reason why they have not mastered the speed and kept a certain distance.

It is easier to master the method of scraping the bar. If the covered electrode is pulled too fast or lifted too high during operation, the arc cannot be started, or the arc just burns and goes out instantly. On the other hand, if the action is too fast, the coated covered electrode will stick to the weldment, resulting in short circuit of the welding ring.

If covered electrode sticks to the weldment during arc striking, loosen the electrode holder immediately. Excessive short-circuit current will cause the short-circuit current of welding machine to burn out. The moving speed of covered electrode has an important influence on weld quality and welding efficiency.

Third, if the covered electrode moves too fast, the arc will not be able to melt enough covered electrode, which will easily lead to incomplete penetration or narrowing of the weld; If the covered electrode moves too slowly, the temperature of the molten pool will be too high to burn through the weldment, and it will also cause flash, too wide weld bead, metal accumulation, too high weld seam and irregular appearance. When the weldment is thin, it is easy to weld; Therefore, it is required that the moving speed of covered electrode should be appropriate to make the weld uniform.