Fine Plasma Cutting Technology
Fine Plasma Cutting Technology Cutting Technologies Division Komatsu America Industries LLC
SUPERIOR CUT QUALITY FROM GAUGE TO 1" THICK MATERIAL With Rasor , smooth, square edges, minimal bevel angle, narrow kerf widths, and tight tolerances are simple and easy to achieve using our preprogrammed guidelines. INCREASED PRODUCTION RATES Komatsu’s patented fine plasma torch uses a magnetic field to constrict the plasma column.This combined with swirling assist gas technology provides superior cut quality and minimal bottom dross formation.This tightly focused plasma column creates a high energy density arc that enables Rasor Fine Plasma to provide much higher cutting speeds than other precision plasma systems. LOWER OPERATING COSTS Lower operating costs are achieved through a combination of higher cut speeds and significantly lower plasma gas usage. At 3-18 scfh of oxygen usage per hour, fine plasma uses two-thirds less gas than other precision plasma systems. Similar savings can be achieved when cutting other materials such as aluminum and stainless steel. LEADING EDGE PLASMA UNIT The Komatsu transistor inverter power unit with programmable controller provides stable and continuous duty D.C. output.Variable pilot and output current make this system infinitely flexible to meet material thickness and cutting conditions. Closed loop cooling system features keep torch cool there by increasing consumable components life. TORCH HEIGHT CONTROL (THC) Komatsu’s proprietary industry leading THC controls torch to work piece distance with superior accuracy. Initial pierce height sensing device prevents the torch from ever making contact with the work piece preventing contaminants from entering torch components.The torch and height control system is protected by our unique 360 degree hemispherical collision detection system.
Fine Plasma provides The G940-II cuts mild steels up to 1/4” at 100% duty cycle and 3/8” at 30% duty cycle. The system is capable of cutting stainless steel and aluminum in gauge through .1875. Other system features include: Liquid cooled (on demand) system improves torch and consumable life Proprietary torch height control measures voltage to .1 volts Only 3 nozzles (.4mm, .6mm, .7mm) required throughout cutting range. Variable amperage control 3-40 amps. 3-16 CFH O2 minimizes hourly operating costs. Optional Features: Rasor Auto Arc - Controls pilot and main current control to minimize set up time Rasor Writer - Automated change over process from cutting cycle to Argon marking your parts using single torch technology Quicksilver nozzles and electrodes available G940-II Model Item Rated input voltage 208V/230V (3 phase) Power supply unit Rated frequency 50/60Hz common Rated input 11KVA Rated output current 40A Range of output current 3-40A No-load voltage 280V Rating duty 100% External interface Torch G940-II Built-in Continuous allowable current Cooling method 40A Liquid cooled Dimensions and weight Power supply unit D26" x W18" x H24" 176 lbs. Gas-Cooling unit D22" x W18" x H24" 99 lbs. (dry) Torch body not actual size
higher cutting performance The G9120-II cuts mild steels from gauge to 1” in mild steel.The system will also cut stainless steel and aluminum from gauge to 3/4” thickness. No other precision plasma process offers the same range of flexibility. Other system features included are: 100% duty cycle throughout thickness range. Liquid cooled (on demand) system improves torch and consumable life. Proprietary Torch Height Control measures voltage to .1 volts. Only 4 (.6, .8, 1.1, 1.3) nozzles required throughout entire cutting range. Viable amperage control 3-120 amps. 3-18 CFH O2 minimizes hourly operating costs. Optional Features: Rasor Auto Arc - Controls pilot and main current control to minimize set up time Rasor Writer - Automated change over process from cutting cycle to Argon marking your parts using single torch technology Quicksilver nozzles and electrodes available G9120-II Model Item Rated input voltage Power supply unit Rated frequency 50/60Hz common Rated input 22KVA Rated output current 120A Range of output current 3-120A No-load voltage 330V Rating duty 100% Torch External interface Built-in Continuous allowable current Cooling method G9120-II 208V/230V (3 phase) 120A Liquid cooled Dimensions and weight Power supply unit Gas unit Cooling unit Torch body not actual size D26" x W18" x H24" 207 lbs. D8" x W18" x H19" 33 lbs. D18" x W18" x H24" 84 lbs. (dry)
Superior Cut Quality Guide Guide Cooling water Magnet Oxygen gas Oxygen gas Cooling water Cooling water Vortex Gas Flow Magnet Oxygen gas Guide Magnet Guide Magnet Oxygen gas Cooling water 120A Cooling water 40A Air Air Hafnium electrode Cooling water Nozzle The special design of the nozzle shape and swirl ring create a high speed vortex of plasma gas flow out of the torch, generating a very dense and stable oxygen plasma arc. Swirler Ring (Swirler No. 2) Nozzle Hafnium electrode Swirler No. 1 Ring (Swirler No. 2) Shield cap Material Material Magnetic Field The Komatsu Rasor Fine Plasma process is the only process to utilize a revolutionary new technology that spins the plasma arc column through the use of the Lorentz forces created by a magnetic field.This focuses and tightens the plasma beam as well as rotating the arc generation point on the electrode. The result is better arc stability and longer consumable life. Electrode Current Magnetic field Magnetic field The dual vortices of the plasma and assist gases generate a square edge on the product side using the 120 amp output Electrode Scrap Rotation of plasma arc by a Lorentz force Hafnium Magnet Dual Gas Swirl Product Magnet Plasma arc Arc generation point Scrap Scrap Product
40 Amp Cut Speeds MILD STEEL Plasma Gas O2 O2 O2 O2 O2 O2 O2 O2 O2 Plasma Gas N2 N2 N2 O2 O2 Plasma Gas N2 N2 N2 O2 120 Amp Cut Speeds Assist Gas No No No No No No No No No Assist 24GA Assist 22GA Assist 20GA Assist 18GA Assist 16GA Assist 14GA Assist 11GA Assist 7GA Assist 1/4" STAINLESS STEEL Assist Gas Thickness N2 18GA N2 16GA N2 14GA No Assist 11GA No Assist 7GA ALUMINUM Assist Gas Thickness N2 N2 Air No Assist 16GA 14GA 11GA 7GA Cut Speed Inches per Minute 200 180 150 140 130 120 110 60 45 Cut Speed Inches per Minute 120 100 100 85 50 Cut Speed Inches per Minute 130 120 100 50 MILD STEEL Plasma Gas Assist Gas O2 O2 O2 O2 O2 O2 O2 O2 Plasma Gas N2 N2 N2 N2 N2 N2 N2 Thickness Air 11GA Air 7GA Air 1/4" Air 3/8" Air 1/2" Air 5/8" Air 3/4" Air 1" STAINLESS STEEL Assist Gas Air N2 Lpg N2 Lpg N2 Lpg N2 Lpg N2 H2 N2 H2 ALUMINUM Thickness 1/8" 3/16" 1/4" 3/8" 1/2" 5/8" 3/4" Plasma Gas Assist Gas Thickness N2 N2 N2 N2 N2 N2 N2 Air N2 Lpg N2 Lpg N2 Lpg N2 Lpg N2 H2 N2 H2 1/8" 3/16" 1/4" 3/8" 1/2" 5/8" 3/4" Cutting Technologies Division Komatsu America Industries LLC 92 Cummings Park Woburn MA 01801 800-70-RASOR Fax: 781-782-0506 www.fineplasma.com SLERT021 Rev. 2.0 05/06 Thickness Cut Speed Inches per Minute 300 200 170 140 100 80 60 25 Cut Speed Inches per Minute 100 80 70 45 40 40 30 Cut Speed Inches per Minute 150 120 100 60 50 40 30
of higher cut speeds and significantly lower plasma gas usage.At 3-18 scfh of oxygen usage per hour,fine plasma uses two-thirds less gas than other precision plasma systems.Similar savings can be achieved when cutting other materials such as aluminum and stainless steel. LEADING EDGE PLASMA UNIT The Komatsu transistor inverter power unit with pro-
2.0 Smoothcut Plasma Cutters 8 2.1 Fundamentals of Plasma Cutting 8 2.2 Process operation 9 3.0 Plasma cutting components 10 3.1 Plasma cutting power sources 10 3.2 Plasma cutting capacity 10 3.3 Plasma cutting torches 10 3.4 Air supply 11 3.5 Process comparisons 11 3.6 Earth cable assembly 11 4.0 Cutting Technique 12 4.1 Cutting 12
2.0 MagMate Cut25 Plasma 6 2.1 Fundamentals of Plasma Cutting 6 2.2 Process operation for transferred arc applications 7 3.0 Plasma cutting components 8 3.1 Plasma cutting power sources 8 3.2 Plasma cutting capacity 8 3.3 Plasma cutting torches (general) 8 3.4 Air supply 9 3.5 Process comparisons 9 3.6 Work return cable assembly 9
While "thermal cutting" would include plasma cutting, "oxyfuel cutting" would not. In many, and perhaps most cases, the use of the more restrictive term "oxyfuel cutting" was not selected to exclude plasma cutting but rather identified only the older technology that was in use before plasma cutting existed or became popular.
Hardox and Weldox are easily cut by the plasma cutting process. Plasma cutting has a limitation when it comes to material thickness and the main thickness to be cut is below 50 mm (plasma cutting machine dependent). Ge-nerally features for plasma cutting can be seen in table 4. Tabel 4. General features for plasma cutting. Figure 7 shows .
Principle of plasma cutting Plasma cutting is a thermal cutting process in which a plasma arc is constricted through a nozzle. The transferred arc, which occurs when electricity flows from the non-melting electrode (cathode) to the workpiece (anode), is used to cut electrically conductive materials. This is the most commonly used form of plasma .
CNC PLASMA CUTTING MACHINE 3000X1500MM CUTTING TABLE MODEL: FLASHCUT/AC200 Plasma cutting machine with a 3000x1500mm cutting table TECHNICAL DATA: Power Voltage: 220V/380V, 50HZ Effective Cutting Width (mm): 1500 Rail width(mm) 1800 Effective Cutting Length (mm):
Plasma Etching Page 2 OUTLINE Introduction Plasma Etching Metrics – Isotropic, Anisotropic, Selectivity, Aspect Ratio, Etch Bias Plasma and Wet Etch Summary The Plasma State - Plasma composition, DC & RF Plasma Plasma Etching Processes - The principle of plasma etching, Etching Si and SiO2 with CF4
CC-S1 CNC cutting controller is used for flame and plasma cutting machines. 2. Controller features 1.2.1 CC-S1 CNC cutting controller is used for flame and plasma cutting machines. 1.2.2 It has a reliable design, anti-plasma interference, lightning proof and surge proof. 1.2.3 It has perfect flame/plasma cutting technology.
