Plasma Cutting Machines

Plasma Cutting Machines

Plasma cutting machines cut metal (thin or thick) using a plasma torch and often a plasma cutting table.

Manufacturers include Longevity, Plasmacam, Dynatorch, MSC, Retro Systems, Haco, ESAB, Blue Marlin, Cam, Arcraft, AKS Cutting, Torchmate, Hypermax and Bosj.

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Plasma Cutting Machine (HVAC)

Plasma Cutter Uses

Plasma cutting is a process that is used to cut steel and other metals using a plasma torch. In this process, an inert gas (or compressed air) is blown at high speed out of a nozzle; while an electrical arc is formed through that gas from the nozzle to the surface being cut, turning some of that gas to plasma.

The HF Contact type typically found in less expensive machines uses a high-frequency, high-voltage spark to ionise the air through the torch head and initiate an arc.

The Pilot Arc type uses a two stage approach to producing plasma. First, a high-voltage, low current circuit is used to initialize a very small high-intensity spark within the torch body, thereby generating a small pocket of plasma gas.

Since plasma cutters produce a very hot and very localized "cone" to cut with, they are extremely useful for cutting sheet metal in curved or angled shapes.

Analog plasma cutters, typically requiring more than 2 kilowatts, use a heavy mains-frequency transformer. Inverter plasma cutters rectify the mains voltage into DC, which is fed into either an IGBT or a MOSFET.

Plasma gouging is a related process, typically performed on the same equipment as plasma cutting. Plasma gouging uses a different torch configuration, and a longer torch-to-workpiece distance, to blow away metal.

Plasma cutters have also been used in CNC (computer numerically controlled) machinery. Manufacturers build CNC cutting tables, some with the cutter built in to the table.

Plasma torches were once quite expensive, usually at least a $1,000. For this reason they were usually only found in professional welding shops and very well-stocked private garages and shops.

Plasma Cutting Machines Items of Interest Hobart 500548 Airforce 500i 115/230 Volt Plasma Cutter The Hobart Air Force 500i plasma cutter features a multivoltage plug (MVP) that allows user to connect to common 120V or 230V power receptacles without tools. U.S.A. Cutting Thickness (in.): up to 5/8, Volts: 115/230, Amps: 27, Duty Cycle: 35% @ 27 Amps, Pilot Arc: Yes, Plasma Gas Flow/Pressure: 4.5 CFM @ 60 PSI, Clamp Cable Length (ft.): 16.5, Power Cord (ft.): 10, Cart: No, Dimensions L x W x H (in.): 14.25 x 8.25 x 11.25 Ramsond CT520DY 3-IN-1 DUAL VOLTAGE 110V/220V 50/60HZ MULTI FUNCTION INVERTER PLASMA CUTTER + TIG WELDER + ARC/MMA STICK WELDER: 50 AMP PLASMA CUTTER + 200 AMP TIG WELDER + 200 AMP ARC MMA STICK WELDER Ramsond introduces the 4th generation of its CT520DY. CT520DY is a 3-in-1 multifunction cutting and welding machine. It is a 50 Amp plasma cutter, a 200 Amp DC (Direct Current) TIG welder and a 200 Amp ARC/MMA stick welder. It is dual voltage 110V/220V and dual frequency 50/60 Hz. It is equipped with DIGITAL AMP DISPLAY, INTEGRATED PRESSURE GAUGE, FOOT PEDAL FUNCTION and FOLDABLE INSULATED HANDLE. It uses the most reliable high frequency V-MOSFETs by TOSHIBA along with PWM (Pulse Width Modulation Processor) which help deliver a constant, concentrated and precise current to the cutting/welding surface. Regardless of your training, you can achieve smooth, clean and uniform cuts (1 inch) and weld a wide range of surfaces and material (e.g. stainless steel, carbon steel, alloy steel, copper, brass and other conductive material) with minimal heat input and without distortion of metal. CT520DY is easy to use by the do-it-yourself user, while fully accommodating of the demands of professional operators. It has five controls; the ON/OFF switch, Amperage Control Knob, the Post Flow Knob, Function Selector and the foot pedal ON/OFF switch. It has an integrated air pressure gauge in the front panel of the unit, as well as a large digital display that conveniently displays the current (Amps) setting of the unit. Note: This is a DC (Direct Current) TIG Machine. For aluminum welding AC (Alternating Current) is recommended. Each Ramsond CT520DY comes fully equipped with all accessories: TIG Torch, Plasma Torch, ARC/MMA Electrode Clamp, Air Regulator/Filter, Argon Flow Meter, Set of Consumables for the plasma and TIG torches, and Ground Clamp. Plug is not included. It comes with a 1 year Limited Warranty (Parts and Labor). The consumables are readily available both through Ramsond and third party sellers and are reasonably priced. Cutting Machines: Circular Saw, Water Jet Cutter, Plasma Cutting, Band Saw, Punch Press, Wire Saw, Cold Saw, Shearing, Bystronic, Roll Slitting Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Chapters: Circular Saw, Water Jet Cutter, Plasma Cutting, Band Saw, Punch Press, Wire Saw, Cold Saw, Shearing, Bystronic, Roll Slitting, Hacksaw, Log Splitter, Abrasive Saw, Laser-Microjet, Diamond Wire Cutting. Excerpt: An abrasive saw with a 410 mm (16 in) diameter blade Steel cut off saw An abrasive saw , also known as a cutoff saw or metal chop saw , is a power tool which is typically used to cut hard materials, such as metals. The cutting action is performed by an abrasive disc, similar to a thin grinding wheel . The saw generally has a built-in vise or other clamping arrangement, and has the cutting wheel and motor mounted on a pivoting arm attached to a fixed base plate. They typically use composite friction disk blades to abrasively cut through the steel. The disks are consumable items as they wear throughout the cut. The abrasive disks for these saws are typically 14 in (360 mm) in diameter and 64 in (2.8 mm) thick. Larger saws use 410 mm (16 in) diameter blades. Disks are available for steel and stainless steel. Advantages Since their introduction, portable metal cutoff saws have made many building site jobs easier. With these saws, lightweight steel fabrication previously performed in workshops using stationary power bandsaws or cold saws can be done on-site. Abrasive saws have replaced more expensive and hazardous acetylene torches in many applications, such as cutting rebar . Cutoff wheels are composed primairly of fibers, held together with a group of small particles pressed and bonded together to form a solid, circular disk. Materials used are generally silicon carbide and diamond bits with a vitrified bonding agent. See also (online edition) Websites (URLs online) A hyperlinked version of this chapter is at A bandsaw in use A bandsaw on display in a hardware store. A band... QinetiQ licenses plasma technology. (Technology Transfer).(QinetiQ Nanomaterials Ltd. signs agreement with Tetronics Ltd.): An article from: Nanoparticle News This digital document is an article from Nanoparticle News, published by Business Communications Company, Inc. on May 1, 2002. The length of the article is 371 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser. Citation Details Title: QinetiQ licenses plasma technology. (Technology Transfer).(QinetiQ Nanomaterials Ltd. signs agreement with Tetronics Ltd.) Publication: Nanoparticle News (Magazine/Journal) Date: May 1, 2002 Publisher: Business Communications Company, Inc. 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