First of all, the hand should be steady, that is, the hand should have the power to control the welding torch. Breathe carefully. When breathing, the chest will expand and contract, which will drive the arm to move and make the welding unstable. Practice breathing, keep your fingers in a certain posture, breathe carefully, control your hands or fingers in a straight line with your will, and find the feeling of breathing. A rhythmic swing. When swinging, you should stay at the break point for 0.5 seconds, and the straight line segment should be fast. When exercising the sense of rhythm, you can shout slogans at 12- 12- 12, and control the rhythm according to the slogans.

Extended data:

Adjustment skills of current and voltage in secondary shielded welding

Welding current is the main factor affecting the quality and productivity of welded joints. Excessive current, rapid metal melting, deep penetration, large metal splash, and easy to produce defects such as burning through and undercut. If the current is too small, it is easy to produce defects such as incomplete penetration and slag inclusion, and the productivity is low.

When determining welding current, covered electrode diameter, weldment thickness, joint type, welding position and other factors should be considered, among which covered electrode diameter is the main factor. Generally speaking, small current is selected for fine covered electrode and large current is selected for coarse covered electrode.

During vertical welding, horizontal welding and overhead welding, the welding current is less than that of flat welding 10% ~ 20%. Stainless steel covered electrode and alloy steel covered electrode have high resistance and thermal expansion coefficient. When the welding current is high, the covered electrode coating will fall off due to redness, which will affect the welding quality. When welding, the welding current should be reduced accordingly.