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8 Item(s)

12 48 96

  • Plasma Cutting Systems - Plasma-Jet DSL Compact

    Plasma-Jet DSL Compact

    Plasma Cutting Systems
    Price on request
    Control: Hypertherm®
    Hypertherm® plasma source
    Cutting width 1000 - 2000 mm
    Cutting length 2000 - 6000 mm
  • Plasma Cutting System - TFGM Plasma 3015 PM1250

    TFGM Plasma 3015 PM1250

    Plasma Cutting System
    Price on request
    Production cutting capacity (plunge-cuts) St 37 0.4 in
    Rapid feed 472 in/min

8 Item(s)

12 48 96

Plasma Cutters and Plasma Cutting Systems

 

Solid, Liquid, Gas, Plasma

Plasma is one of the fourth state of matter, after solid, liquid and gas. It is formed when overheating a gas. In case of plasma cutting machine the gas is subject to strong electric system. This causes the gas to ionize by losing electrons and in the same time overheat, going into plasma state. Due to it’s very high temperature, plasma can easily melt through most metals, making cutting very easy.

Plasma Cutting is one of the most spreaded cutting technology

Plasma cutting is one of the most spreaded cutting technology. Due to high cutting speed, good precission and low operation costs, these equipments gained a big popularity, their presence been noticed in both large-scale industrial CNC companies and in small workshops.


Cut Quality: Excellent angularity, Small heat-affected zone, Virtually dross-free, Good to excellent fine-feature cutting.
Productivity: Very fast cutting speeds for all thicknesses, Very fast pierce times, Quick-disconnect torches maximize productivity.
Operating Cost Long consumable life, good productivity and excellent cut quality drive the cost per part lower than other technologies.
Maintenance: Mechenical systems require simple to moderate maintenance, with most components serviceable by in-house maintenance groups.

Sequence of Operating a Plasma Cutter

Sequence of Operating a Plasma Cutter

A start input signal is sent to the power supply. This simultaneously activates the open circuit voltage and the gas flow to the torch. Open circuit voltage can be measured from the electrode (-) to the nozzle (+). Notice that the nozzle is connected to positive in the power supply through a resistor and a relay (pilot arc relay), while the metal to be cut (workpiece) is connected directly to positive. Gas flows through the nozzle and exits out the orifice. There is no arc at this time as there is no current path for the DC voltage.

Sequence of Operating a Plasma Cutter

After the gas flow stabilizes, the high frequency circuit is activated. The high frequency breaks down between the electrode and nozzle inside the torch in such a way that the gas must pass through this arc before exiting the nozzle. Energy transferred from the high frequency arc to the gas causes the gas to become ionized (electrically conductive). This gas creates a current path between the electrode and the nozzle, and a resulting plasma arc is formed. The flow of the gas forces this arc through the nozzle orifice, creating a pilot arc.

Sequence of Operating a Plasma Cutter

Assuming that the nozzle is within close proximity to the workpiece, the pilot arc will attach to the workpiece, as the current path to positive (at the power supply) is not restricted by a resistance as the positive nozzle connection is. Current flow to the workpiece is sensed electronically at the power supply. As this current flow is sensed, the high frequency is disabled and the pilot arc relay is opened. Gas ionization is maintained with energy from the main DC arc.

Sequence of Operating a Plasma Cutter

The temperature of the plasma arc melts the metal, pierces through the workpiece and the high velocity gas flow removes the molten material from the bottom of the cut kerf. At this time, torch motion is initiated and the cutting process begins.

 

Machine construction of Plasma Cutting Systems

Machine construction of Plasma Cutting Systems

Extremely rigid welded design offers maximum cutting precision. Bridge with dual-drive system with solid structure designed for stress free continuous work. Base including cable cannels for cable protection and clear moving area around the machine.

Machine construction of Plasma Cutting Systems

Pneumatically controlled cutting table. Cutter table features rigid steel construction for high load capacity. Cutter table has a stand-alone design to eliminate thermal and mechanical influences on the plasma cutter system. Table is prepared for dust collection system, being equipped with electro-pneumatic controlled valves. Aspiration is efficiently done only on the working area.

 

Plasma Cutting Head

Plasma Cutting Head

Magnetic torch coupling to reduces tooling times and also to ensures more safety for drives and torch in case of a collision. Height sensing and height control via plasma arc for maximum quality and productivity throughout the cutting process.

Plasma Cutting Head

Z axis with ball screw transmission and servo-driven Automatic torch height control (THC). This ensures to always maintain the optimal distance between work piece and cutting head. The THC is controlled by CNC and doesn’t need additional adjustments.

Plasma Kinematics

Plasma Kinematics

High-performance Mitsubishi servo motors and drives on all axes enable fast and accurate positioning, and support high-speed handling of works. Offering more than just improved performance, these servos are designed to drive the industries of tomorrow due to it’s long life, maintenance free and energy-efficient design.

Plasma Kinematics

Low-wear and low maintenance helical rack and pinion drive system on X and Y axis for easily handling heavy load capacities and duty cycles due to a higher contact ratio (number of effective teeth engaged).

Plasma Kinematics

Low-backlash gearboxes offer high output in a compact design. As a result they have high stiffness and overload capacity but at the same time their low inertia, resulting in a high efficiency. They have also lifetime lubrication making them maintenance free and reliable.

Plasma Kinematics

Special linear guide ways on all axes, designed for large load capacity with high rigidity. It features equal load ratings in the radial, reverse radial and lateral directions, and self-aligning to absorb installation-error. They are designed for long life and smooth linear motion even at high speeds.



Plasma Cutting Precision

Plasma Cutting Precision

Tolerances –› Hy Definition:
up to a plate thickness of 3 mm = Ø 5 mm larger plate thickness 3 mm = Ø 1 times plate thickness.

Plasma Cutting Precision

Tolerances –› conventional plasma:
up to a plate thickness of 3 mm = Ø 5 mm larger plate thickness 3 mm = Ø 1.5 times plate thickness.

Tolerances for Plasma Cutting

ISO 9013 (DIN 2310)



Plasma torches create an extremely hot ionized gas beam that can penetrate up to 80 mm thick unalloyed steel. At these high temperatures, which reach about 30,000 °C, the material melts rapidly. To accelerate the process even further, process gases are used to blow out the resulting smelt from the kerf. This results in very high cutting speeds. Subsequently, the plasma cutter offers significantly higher productivity in medium to thick materials than the laser cutter, which has a limit of 30 mm in stainless steel. Contrary to the laser cutter, the plasma cutter is used for much coarser cutting requirements. Depending on system configuration and material thickness, the kerf can be about 1.35 and 4 mm wide, and cut part tolerances are in the vicinity of ± 0.5 mm. Depending on the used plasma source and the material to be cut, the maximal material thickness is 38 – 80 mm at edge-start, and hole cutting capacity is between 22 and 50 mm. An optional oxy-fuel cutter head can be used for severing very thick material. This allows cutting of sheets with thicknesses up to 150-200 mm. Currently, three series are available. All of them use the industry-leading Hypertherm technology for plasma source, cutter head, control and software. The Plasma-Jet DSL series systems are robust high-capacity systems for around the clock (3 shifts) use, and cutting width of 1,600 to 4,150 mm and cutting lengths of 1,600 to 25,150 mm. The Plasma-Jet DSL Compact series systems are designed for 1-shift operations and feature a very small footprint and high precision cuts. They allow cutting widths up to 1,000 or 2,000 mm and cutting lengths of 2,000 or 3,000 mm, respectively. Plasma-Jet systems can be equipped with an optional tube cutter. The latest option is a 5-axis cutter head that allows bevel cuts and chamfer cuts. With the appropriate setting, these cutter heads also can be used to compensate for angled cuts. This ensures clean, vertical edges of the cut out part. The Plasma-Jet Eco Compact series features an excellent price/performance ratio and is designed for personal use applications. The cutting functionality is the same as in the larger systems, but in a more compact, space-saving package.