Underwater cutting

1, the underwater power - oxygen cutting

Commonly used in DC arc Aluminum Electrode(reverse), can cut carbon steel, stainless steel, cast iron and non-ferrous metals.

Underwater welding and cutting pliers clamp generally universal, open and close the valve is equipped with a clamp, with cuts and interruption of current through the gate. Clamp electrode head for the folder to eat or cut of the chuck.

Cutting oxygen pressure should be higher than the bottom pressure 5 ~ 7Kgf/cm2. Cutting of hollow carbon rods can be used underwater cutting or a dedicated section, the steel tube (diameter 8mm, diameter 3mm), coated with waterproof leather made medicine.

2, underwater plasma arc cutting

Plasma arc cutting is used underwater, the effective power will be reduced, cutting diminished capacity, arc stability deteriorated, arc more difficult. So cutting the power supply should be increased no-load voltage should be increased to 500 ~ 900V. If the cutting depth of 8m thickness of 30 ~ 100mm stainless steel work, the current 300 ~ 1000A, Voltage 180 ~ 450V, D arc current of 75 ~ 100A.

Torch should ensure that all parts sealed. Nozzles mounted an outer nozzle, high-speed rotation of the cooling water from the nozzle end of the pore through the outer nozzle spray out to form a water screen, umbrella, in order to improve the stability of the plasma arc burning.

keywords: Welding Wires