Alone or assisted with water, plasma has proven itself to be one of the most efficient cutting processes for sheet, plate, tube, pipe, and profiles. Search this technology area for information on equipment, cutting tips, and gases.
March 13, 2003
Just 20 years ago most heating, ventilation, and air-conditioning (HVAC) ductwork was cut by hand with snips and shears. Cutting out HVAC fittings was slow and labor-intensive. It took an experienced tinsmith with strong hands to slice through galvanized steel all day. It took even more skill to get the cuts and bends just right to coax flat panels of sheet metal into precise 3-D forms.
August 29, 2002
Many fabricators use plasma arc cutting torches every day, either to replace or complement saws, cut-off wheels, snips, and oxyfuel rigs. It can be used in a variety of applications—installing or remvoving HVAC/R equipment, plumbing systems, and industrial equipment; reparing equpment and systems; and cutting shapes consistently.
July 25, 2002
In comparing cutting costs associated with precision plasma, punch-plasma, and laser cutting, it's important to account for labor costs, operating costs, and depreciation. All three of these processes have benefits and drawbacks cost-wise, depending on how they're deployed.
June 13, 2002
The evolution of high power dry plasma technology and other cutting methods, such as conventional dual gas PAC, water injection PAC, high precision PAC, and laser for metal fabrication. Variables such as, process speed, cut quality, productivity, and cost per foot are discussed in detail.
July 26, 2001
The first plasma arc cutting (PAC) systems, developed in the '60s, were 1,000-amp monsters designed to blast through 6-inch stainless steel.
July 12, 2001
This study conducted at Hypertherm characterizes thermal and chemical changes in plasma-cut stainless steel and aluminum alloys and recommends process alternatives that may improve aesthetics and cut quality to improve forming and fabricating of the materials. The systems used were water-injection PAC, conventional dual-gas PAC, and high-precision PAC. It was learned that the heat-affected zone (HAZ) is small in plasma-cut pieces, HAZ varies with speed and power, faster cutting produces less HAZ, and more heat per square inch can produce less HAZ.
May 30, 2001
To clean-cut stainless steel sheet and plate, fabricators first must choose the right CNC cutting equipment and then set the correct process-related variables. Precise machine motion controls, torch-to-material distance control, and the correct plasma and assist gases all are crucial to producing weld-ready plasma-cut edges on all stainless steel thicknesses.
February 19, 2001
Attention to detail at the outset can save plasma cutting operators a load of trouble during production.