Hebei Juliang Technology Co., Ltd. is one of the leading manufacturers and suppliers of compact plasma cutter in China. Please feel free to buy CE approved machinery made in China here from our factory. All customized machines are with high quality and competitive price.

What This Machine Is

A compact plasma cutter is a thermal cutting tool. It uses an electric arc to turn compressed air into plasma, a gas heated to over 20,000°C. This superheated plasma stream slices through any electrically conductive metal. The machine has a power supply, a torch you hold, and a connection for compressed air. The power supply takes standard 110V or 220V power and transforms it into high-frequency, high-voltage electricity. This electricity sparks an arc between the torch's electrode and the metal you're cutting. The arc heats the air into plasma, melting the metal, and the forceful gas blast clears away the molten material from the cut.

What sets a compact cutter apart from a big industrial setup is its integrated design, not just its smaller size. The power supply, controls, and sometimes even the air compressor are all built into a single unit that can sit on a workbench or a cart. You don't need special three-phase power or a separate cutting area. Just plug it into a regular outlet, hook up the air, and you'll be cutting in no time.

How Plasma Cutting Works

1. The Pilot Arc:When you turn on the torch, a high-voltage, high-frequency spark is generated internally by the power supply. This spark jumps from the electrode to the nozzle, ionizing the air and establishing a pilot arc. This arc then paves the way for the main electrical current.

2. The Transfer Arc:When the torch is brought close to the metal (about 3–5mm away), the pilot arc transfers to the workpiece. This completes the electrical circuit, initiating the main cutting arc. The power supply then switches from pilot mode to cutting mode, boosting the current from approximately 10–15 amps to its full cutting capacity.

3. The Plasma Stream:The arc ionizes the compressed air flowing through the torch, turning it into plasma. The nozzle then focuses this plasma into a concentrated jet. This stream can get incredibly hot, exceeding 20,000°C, which is more than enough to melt any metal it touches.

4. The Cut:The superheated plasma stream melts the metal it encounters. Simultaneously, the high-speed gas blows the molten metal away from the cut line, effectively separating the material. You just guide the torch along your desired path, and the machine does the heavy lifting.

At its core, the process is simple: the power supply delivers the electricity, the torch shapes the plasma, and the compressed air serves as both the gas and the force to remove molten material. There are no intricate optical setups, no mirrors to fuss with, and no need for specialized gases. This inherent simplicity is why plasma cutters are typically more reliable and easier to maintain compared to laser systems.

Common Problems We See

Bad air quality. Moisture in air lines kills plasma consumables. Drain your compressor daily. Use a filter-dryer. This is the single biggest factor in consumable life.

Wrong consumables. Different materials and thicknesses need different nozzles and electrodes.

Ignoring THC. Height controller needs calibration for each thickness.

Incorrect gas pressure. Too little oxygen, cut won't penetrate. Too much, waste gas.

Poor grounding. Plasma needs solid ground. Bad grounding causes erratic arc.

Our Certificate

Frequently Asked Questions

What's the difference between a compact plasma cutter and a full-size industrial system?

A compact plasma cutter is smaller, lighter, and runs on standard household power. It's designed for portability and limited floor space. A full-size system is larger, requires three-phase power, and is designed for continuous high-volume production. Compact units typically cut up to 20mm cleanly; full-size systems handle much thicker materials.

Can I cut stainless steel and aluminum with this machine?

Yes. Stainless steel, aluminum, copper, and other conductive metals cut well with plasma. You may need slightly different settings-higher amperage for thicker aluminum, different gas flow rates. For best results, test on scrap material before cutting production parts.

How long do plasma consumables last?

Consumable life depends on amperage, material, and air quality. At 45 amps on mild steel, an electrode and nozzle typically last 1–3 hours of arc-on time. Higher amperage reduces life. Clean, dry air extends life significantly. Replace the electrode and nozzle together for best results.

What kind of training is provided?

Our technicians provide on-site or remote training covering basic operation, daily inspections, parameter adjustment, and troubleshooting. Your operators run parts under supervision before we sign off. We also provide detailed manuals and video references for ongoing training.