Plasma cutting is a cost-effective way of cutting metals when compared to lasers. Plasma cutters can typically cut a wider range of materials as well as coping with thicker sheets. On the downside they are slower than a laser and produce a lower quality cut edge.
The plasma cutting process involves creating a focused beam of superheated, electrically ionized gas from the plasma cutter nozzle through the work piece to be cut. The compressed gas flows through a focused nozzle at high speed toward the work piece. An electrical arc is then formed within the gas, between an electrode near or integrated into the gas nozzle and the sheet material being cut. The electrical arc ionizes some of the gas, thereby creating an electrically conductive channel of plasma. As electricity from the cutter torch travels down this plasma it delivers sufficient heat to melt through the sheet. At the same time the high velocity plasma and compressed gas blow the hot molten metal away, cutting through the sheet.
When selecting which Plasma Cutter to purchase you should consider the sheet sizes as this will determine the table size required and then the thickness. The thickness determines the power source needed. We offer a range of table sizes and power sources for you to choose from.