Merkle Plasma cutter

Merkle plasma cutting systems - an economical alternative

Plasma cutting using compressed air as the plasma gas is an economical alternative to oxy-fuel cutting. Plasma cutting systems can cut all electrically conductive metals, including painted and galvanised metals, such as structural steels, high-alloy chromium-nickel steels, all hardened and unhardened tool steels, aluminium, aluminium alloys, brass, copper, grey cast iron and titanium. Plasma cutting systems are widely used in steel production, assembly, repair, the automotive industry and other fields. The success of plasma cutting is based on the ability of the plasma jet (arc)  to produce an extremely intense and tightly concentrated heat flow in the workpiece. The arc temperature is approximately 13,000 °C. Heat enters the workpiece very quickly, so lateral heat dissipation remains relatively low. This heat concentration, corresponding to an energy flux density of approximately 106 W/cm2, produces a narrow, clean kerf. Thermal distortion of the workpieces is very low. High-speed plasma cutting with narrow kerfs is characterised by:

• Low material consumption
• Low energy costs
• Little waste
• Low labour costs
• Precise, focused arc

Cutting capacity

Cutting capacity, cutting speed and current are interdependent. The diagram shows the relationship between cutting capacity and cutting speed at different current levels.

Operating costs

Plasma gas can be produced inexpensively from compressed air.

Thanks to its low consumption, plasma cutting with compressed air is an extremely economical and cost-effective process.

Functionality and ease of use

Welding torch connection  in the side compartment of the system: clearly arranged, easily accessible and fitted with a safety interlock.

• Integrated water circulation cooling unit.
• Long service life of consumables, with a cutting head temperature of just 80 C even at a cutting current of 120 A.
• Cutting capacity up to 50 mm.
• Recessed, tilting control panel, protected and clearly laid out.
• Three current settings: 40, 80 and 120 A.
• Safety interlock switch.
• Approved for operation in environments with increased electrical hazard (S marking).
• PR 122 W cutting torch with safety button to prevent accidental activation.