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SAI WELD INDIA
Manufacturer of CNC Plasma Cutting Machine
Authorised Distributor of Thermal Dynamics
Dealers & Importer of : Hypertherm, IGBT Inverter, Plasma / TIG / MIG / Arc Welding Machines & Tungsten Electroddes
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PLASMA CUTTERS
Kjellberg Plasma Cutting Systems
HiFocus 80i
HiFocus 130
HiFocus 160i
HiFocus 161i
HiFocus 280i
HiFocus 360i
HiFocus 440i
Thermal Dynamic Automated Plasma Cutting Systems
Thermal Dynamic High Precision Plasma Cutting Systems
Thermal Dynamic Automation Series
Thermal Dynamics Manual Plasma
Cutting Inverters
Hypertherm Mechanized Plasma Cutter
Plasma Consumables
Plasma Torches
CNC Machines
Welding Machines
Controller / THC
Nesting Software
Servo Motor Drives / Gearbox
 
Kjellberg Plasma Cutting Systems
  HiFocus 80i
Cutting current at 100% duty cycle : 10 - 80 A
Cutting range : 0.5 - 25 mm
Piercing : up to 15 mm
 
  HiFocus 130
Cutting current at 100% duty cycle : 20 - 130 A
Cutting range : 16 A
Piercing : 0.5 - 40 mm
 
  HiFocus 160i
Cutting current at 100% duty cycle : 10 - 160 A
Marking current : 4 - 25 A
Cutting range : 0.5 - 50 mm
 
  HiFocus 161i
Cutting current at 100% duty cycle : 10 - 160 A
Marking current : 5 - 25 A
Cutting range : 0.5 - 50 mm
 
  HiFocus 280i
Cutting current at 100% duty cycle : 280 A
Marking current : 5 - 50 A
Cutting range : 0.5 - 70 mm
 
  HiFocus 360i
Cutting current at 100% duty cycle : 360 A
Marking current : 5 - 50 A
Cutting range : 0.5 - 80 mm
 
  HiFocus 440i
Cutting current at 100% duty cycle : 440 A
Marking current : 5 - 50 A
Piercing : up to 50 mm
 
Comparison with Other Separation Methods
Although users increasingly choose plasma cutting, there are of course other alternatives, too. These include oxy-fuel and laser cutting, both being likewise thermal separation methods, but also water jet cutting which does not have a thermal influence on the material. But what are the advantages of each method? How can the plasma cutting method compete with the other mentioned alternatives? Generally it can be said that each method has its right to exist because the demands on the separation method depend on the individual cutting task. Economic aspects, too, should not be overlooked. Often, there are several options how to solve a specific cutting task. Finally, the decision is often made by comparing the separation methods with each other with regard to their costs. In the following you will find a brief overview of the advantages and disadvantages of plasma, oxy-fuel, laser and water jet cutting.
 
  • Plasma Cutting
  • Oxy-Fuel Cutting
  • Laser Cutting
  • Water Jet Cutting
     
Advantages
Highest flexibility when cutting all electrically
conductive materials
Lowest requirements on material quality and working
environment
High cutting speeds when cutting thin and medium-
sized plates (up to 10 times higher compared to oxy-
fuel)
Higher cutting speeds when cutting medium-sized and
thick materials compared to laser
Operation with one or more torches possible
depending on batch size
Materials can be cut nearly dross-free (no after-
treatment required)
Without alternative when cutting medium-sized and
thick high-alloyed steel and aluminium plates
Excellent suitability when cutting thin and medium-
sized mild steel (up to 30 mm)
Cutting of high-tensile mild steel with low heat input
Very good automation capabilities
Underwater plasma cutting for very low heat warpage
of the workpiece and low noise level in the working
environment
 
Disadvantages
Limited use for materials with a thickness from 0.5 mm
up to 160 mm at present
A little broader kerf compared to laser cutting
     
Advantages
Suitable for medium-sized and thick materials
Economic use of several torches
Low investment and consumables costs
Bevel cutting with up to three torches on one
aggregate
 
Disadvantages
Suitable for cutting mild steel only
High heat input, large heat-affected zone
Material warpage when cutting thin materials;
straightening work required
Bad cuts under 5 mm material thickness
Low dimensional accuracy when cutting repeat cuts
due to heat influence
Low cutting speed
After-treatment required due to partial dross
formation
Grinding of oxidized cut surfaces necessary for weld
preparation
     
Advantages
High accuracy when cutting thin plates
Cutting of very small holes, narrow webs, acute-
angled geometric shapes, complex contours possible
Rectangular cutting edges
Very good automation capabilities
Extremely low heat input, no material warpage
Very small cutting kerf (0.2 mm to 0.4 mm)
High cutting speed when cutting thin plates (up to
approx. 4 mm)
 
Disadvantages
High investment and operating costs (high gas
consumption)
Special material quality required (laser plates)
Limited use (mild steel: 20 (25) mm, high-alloyed steel:
15 mm, aluminium: 10 mm)
Uneconomic for small batch sizes
Long piercing time for thick materials
No continuously smooth surface when cutting
medium-sized plates
High-precision height control between torch and
workpiece necessary
Restricted beam stability when cutting mild steel with
normal Si- and P-content
Reduced process liability when cutting mirroring
surfaces
Low efficiency factor (CO2 laser max. 10%)
     
Advantages
Cutting of very small contours possible
No thermal influence on the material to be cut
Cutting of insulating materials also possible (also
combinations of materials)
Nearly rectangular cutting edges
No dust, smoke or vapours
 
Disadvantages
Very low cutting speed
Due to strong frictional forces on the cut surface the
beam looses energy with increasing depth and the
cutting quality worsens.
Direct water contact (materials get wet)
Water must be processed or filtered, abrasives must be disposed of separately
 
 
 
 
 
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