Plasma Cutting Systems

Plasma cutting systems cut electrically conductive metal with a constricted arc and a high-velocity gas jet, so they handle stainless steel and aluminum as well as carbon steel. Seven Star LLC supplies plasma cutters in Oman from Hypertherm, with one air plasma model from Miller also listed. The category includes portable and handheld air plasma units for workshop and site use, and mechanized plasma systems built for CNC cutting tables.

Handheld air plasma and mechanized plasma cutting systems

Air plasma units run from compressed air and a single power source. They are used for cutting plate, pipe and sections by hand, for gouging out welds and defects, and on small cutting tables or pipe cutting rigs with a machine torch. Mechanized systems are a different class of equipment. They work with a CNC table, a torch height control and a gas console, and use oxygen, nitrogen or other gas combinations to get a squarer edge and a narrower kerf on each material.

How to size a plasma cutter

Manufacturers quote several thickness figures. The recommended or production cut thickness is the one to use for daily work. Severance thickness is the most the unit can part with a slow, rough cut, and pierce capacity, which matters on a table, is lower than edge-start capacity. Choose on the thickness you cut most of the time. Then check the duty cycle at that output, the input supply, and the compressed air flow, pressure and dryness the unit needs. Wet or oily air shortens consumable life quickly, a common problem in humid GCC coastal workshops.

What to send for a plasma system quotation

Tell us the materials and thickness range, handheld or mechanized use, the site supply voltage and phase, the torch lead length, and for table systems the CNC and height control in use. Add the consumables you want in the first order.