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Plasma cutting machines
- Supply voltage: 230V ~50Hz
- Cykl pracy: 70% at 40A, 100% at 33A
- Cutting current adjustment range: 15-40A
- Maximum thickness of metal to be cut: 12mm
- Description: High-quality plasma cutting machine for high-precision cuts in metals of varying textures and thicknesses. The machine is characterised by quality workmanship, high productivity and many modern features that guarantee the highest quality.
- Supply voltage: 3x400V, 50 Hz
- Work cycle: 50% at 100A, 100% at 70A
- Cutting current adjustment range: 35-100A
- Maximum thickness of metal to be cut: 35mm
- Description: High-quality plasma cutting machine for high-precision cuts in metals of varying textures and thicknesses. The machine is characterised by quality workmanship, high productivity and many modern features that guarantee the highest quality.
Understanding Plasma Cutting
Plasma cutting is a process that uses a high velocity jet of ionized gas to cut through materials, resulting in accurate finishes with minimal distortion and clean edges.
Plasma cutters use the 4th state of matter, plasma, to create a plasma arc that cuts through metals like steel and aluminum.
Plasma cutting is ideal for cutting steel and non-ferrous materials less than 1 inch thick.
Plasma cutting is more forgiving than oxy/fuel cutting and can make non-linear cuts.
Key Features to Consider
- Choose a plasma cutter based on three criteria: duty cycle, maximum cut capacity, and available electrical input supply.
- Ensure the machine has a good duty cycle for extended use, especially for computer controlled plasma applications.
- Consider the availability of plasma torch spares, including nozzles, electrodes, and retaining caps.
- Ensure the machine can maintain the correct air pressure, as some models come with features that detect and alert users about air pressure levels.
- Look for a plasma cutter with a high-frequency ignition system for a smooth cut.
- Check if the machine has a pilot arc function for stability and a fast, strong, and smooth cut.
Pilot Arc and Auto Set
- Pilot arc ignites the cutting arc before touching the metal, using a high voltage spark to ionize compressed air in the torch head.
- Auto-set allows users to programme the material type and thickness, and the machine will set its cutting current accordingly, making it ideal for cutting thin materials with precision.
- Some machines with auto-set will also advise on a suitable cutting speed, allowing for smooth cuts with minimal dross.
Safety Features
- Insufficient air pressure detection: some machines have a built-in feature that detects incoming air pressure and alerts the user if it is insufficient.
- HF free arc starting: eliminates the high voltage, high frequency circuit, eliminating potential harm to electrical items.
- Built-in air compressor: some plasma cutters have a built-in air compressor, providing a permanently available compressed air supply.
Types of Plasma Cutters
- Inverter plasma cutters: rectify the mains supply to DC, which is fed into a high-frequency transistor inverter.
- CNC plasma cutters: capable of multi-axis cutting of thick material, allowing opportunities for complex welding seams that are not possible otherwise.
- Hand held plasma cutters: suitable for repair or demolition applications, offering flexibility and ease of use.
Advanced Features
- CNC plasma cutting configurations: 2-dimensional / 2-axis plasma cutting, 3-dimensional / 3+ axis plasma cutting, and tube and section plasma cutting.
- Plasma cutters produce clean and accurate cuts on thin and thick materials, including mild steel, stainless steel, and other conductive materials, making them versatile for cutting thin materials as well.
- Curved or angled shapes can be cut using CNC plasma cutters.
CNC Plasma Cutting Configurations
- 2-dimensional / 2-axis plasma cutting: produces flat profiles with cut edges at 90 degrees to the material surface.
- 3-dimensional / 3+ axis plasma cutting: produces flat profiles from sheet or plate metal, with the cutting head able to tilt while being taken through a conventional 2-dimensional cutting path.
- Tube and section plasma cutting: used in the processing of tube, pipe, or any form of long section, with the plasma cutting head usually remaining stationary while the workpiece is fed through and rotated around its longitudinal axis.
Top Plasma Cutter Brands and Models
- Clarke Plasma King 25Si Plasma Cutting Machine: a 25A plasma cutter with inverter technology for clean and accurate cuts on steel up to 6mm.
- Draper IPC40 Expert High Frequency 40A Plasma Cutter: features advanced IGBT technology with a digital meter.
- GYS Easycut 40 Plasma Cutter 40Amp (230V): a plasma cutter with a HF-free starting voltage, perfect for cutting all types of metal up to 20mm thick.
Conclusion
Plasma cutters are versatile tools that have revolutionized the way we cut through metals. With their ability to cut through thin and thick materials, plasma cutters have become an essential tool in various industries, including fabrication, automotive repair, and construction. The use of plasma cutting machines has also increased productivity and efficiency in many workshops.
When choosing a plasma cutter, it is essential to consider the duty cycle, maximum cut capacity, and available electrical input supply. Additionally, the availability of plasma torch spares, such as nozzles, electrodes, and retaining caps, should also be taken into account.
CNC plasma cutting machines have also become increasingly popular, offering high precision and accuracy in cutting complex shapes and designs. These machines are ideal for cutting thick steel plate and can produce clean and smooth cuts with minimal dross.
Plasma cutters produce a very hot and localized “cone” to cut with, making them useful for cutting sheet metal in curved or angled shapes. The use of compressed air and pilot arc technology has also improved the cutting process, allowing for more precise and efficient cuts.
In conclusion, plasma cutters are powerful tools that have transformed the metal cutting industry. With their ability to cut through various materials, including mild steel, stainless steel, and aluminum, plasma cutters have become an essential tool for many industries. By understanding the different types of plasma cutters and their applications, users can choose the right machine for their needs and achieve high-quality cuts with ease.
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