Welding preparation: 4mm thickness of about not break open, direct welding wire, a single penetration. 4 - 6 mm thickness of butt weld joints can be no open break-sided welding. 6 mm or more, generally open V or U, X-shaped groove.

Second: welding pieces of filler wire for degreasing and descaling. To ensure the welding quality.

Welding parameters: including the welding current, tungsten diameter, arc length, arc voltage, welding speed, protect air, the nozzle diameter.

1, weld welding current is a key factor in the decision. Usually based on welding consumable  , thickness, and the groove shape to decide.

2, welding pole diameter according to the size of the welding current decisions, current increases, the greater the diameter.

3, the welding arc and electric arc movies, arc length range of about 0.5 to 3mm, the corresponding arc voltage is 8 ~ 10V.

4, the welding speed: Choose to take into account the current size of the sensitivity of weldment material, welding position and method of operation and other factors.

keywords: Welding Alloys