Metal Powder Cutting Procedure:

In the powder cutting procedure oxygen stream react with finely divided powder and increase the temperature so high that the refractory oxides melt eroded and fluxed resulting in an unhindered cut. Some of the powders react chemically with the refractory oxides generated in the kerf and enhance their fluidity. The resultant molten slag is washed out of the reaction zone by the oxygen jet. Fresh metal surfaces are constantly exposed to the powder and oxygen jet. Iron powder and mixtures of metallic powders, such like aluminium and iron, are utilized.

Cutting of oxidation resistant steels by the powder method might be done at about the similar speeds as oxygen cutting of carbon steel of equivalent thickness. The cutting oxygen flow should be slightly higher with the powder procedure.

In cutting any metal by the method, dry air and powder, correct dispenser setting, leak tight joints and clean powder passages all help towards ensuring a good quality cut. Speed of powder flow is first adjusted to the exact amount for the particular work in hand by trial cuts.