Hebei Juliang Technology Co., Ltd. is one of the leading manufacturers and suppliers of compact cnc 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.

Product Definition

A compact CNC plasma cutter is a precision thermal cutting system that utilizes an electrically conductive gas jet to slice through metals. This machine establishes an electrical arc between a torch's electrode and the metal piece. As compressed air passes through the torch, the arc ionizes it into plasma, generating temperatures above 20,000°C. This plasma stream is focused through a nozzle and aimed at the material, melting it. Simultaneously, a powerful gas current blows the molten metal out of the cut line. The 'compact' feature signifies a smaller size and simpler design than typical gantry systems, making it ideal for workshops with limited space or for jobs requiring light to moderate fabrication.

Compact CNC Plasma Cutter Structure and Materials

1.Gantry Beam:

The gantry beam supports the cutting torch and provides the structural framework for axis movement. It is typically fabricated from welded steel sections with ribbed reinforcement for rigidity. The beam spans the cutting table width. Thermal expansion of the beam during operation is managed through the machine's design and control system.

2. Cutting Table:

The cutting table supports the workpiece during cutting. It consists of a steel frame with slats spaced along the table length. The slats are typically fabricated from 6-8mm thick steel plate. Slat spacing ranges from 80-120mm depending on the material being processed. The table typically includes water trays or downdraft extraction for fume management. Slats are consumable items and require periodic replacement as the plasma arc cuts into them.

3. Side Rails:

Side rails provide the mounting surface for the gantry and the rack-and-pinion drive system for the Y-axis. Rail materials are typically hardened and ground steel profiles. The rails are mounted on the table frame and must maintain straightness and parallelism for accurate cutting.

4. Drive System:

The machine uses servo motors and precision ground rack-and-pinion drives for axis movement. The gantry moves along the Y-axis rails, and the torch carriage moves along the X-axis beam. The CNC controller coordinates the X and Y axes to move the torch along the programmed cutting path. Positioning accuracy is typically ±0.3mm.

5.Control System:

The CNC controller processes G-code programs and coordinates axis movements. The controller also controls plasma power supply output and gas flow.

Failure Modes

Inconsistent cut quality can stem from worn consumables, incorrect cutting speed, or improper gas pressure. Please inspect your consumables and adjust the cutting settings accordingly; replace parts if they are worn.

Excessive dross often arises from incorrect cutting speed, improper gas pressure, or a worn nozzle. Experiment with adjusting your cutting parameters and replace the nozzle if it shows signs of deformation.

Arc instability can be caused by worn electrodes, incorrect gas pressure, or moisture in the gas supply. Examine the electrode, verify the gas pressure, and check your air dryer or filter for any issues.

Nozzle damage typically occurs due to incorrect torch height or accidental contact with the workpiece. Ensure your torch height control is functioning correctly and inspect the nozzle for any physical damage.

Power supply overheating can happen if the duty cycle is exceeded or if airflow is obstructed. Allow the unit to cool, confirm the fan is operational, and clean the air intake filters.

qualification certificate

Frequently Asked Questions

What is the maximum thickness this machine can handle?

Compact systems typically cut carbon steel up to 25mm cleanly. Stainless steel and aluminum are typically limited to 12mm due to different material properties. Thickness capability depends on power supply output current and material characteristics.

Can this machine be used on a workbench or does it require a dedicated table?

The machine includes an integrated cutting table as part of the system. The table provides workpiece support and fume extraction. The machine should be installed on a level floor; specific foundation requirements depend on the machine size and weight.

How often should plasma consumables be replaced?

Consumable life depends on cutting current, gas type, and material. Electrodes and nozzles typically require replacement after 1–4 hours of arc-on time at high current. Visual inspection determines replacement: electrode hafnium pit depth, nozzle orifice roundness, and swirl ring condition.

Can the compact CNC plasma cutter cut without a water table?

Yes, the machine can operate without a water table using a downdraft extraction system. Water tables provide fume suppression and reduce distortion but add complexity to the table design. Dry cutting with downdraft extraction is a common configuration for compact machines.