Correct cleaning and maintenance methods of CNC plasma cutting machine

Correct cleaning and maintenance methods of CNC plasma cutting machine

CNC plasma cutting machine has the characteristics of multi-function, high efficiency, high speed, high precision, low labor intensity, and high automation. It is suitable for processing parts with multiple varieties, small batches, complex shapes, and frequent replacement. It is widely used in many industries such as automobiles, locomotives, pressure vessels, chemical machinery, nuclear industry, general machinery, engineering machinery, steel structures, and so on. Next, Huafei CNC introduces the cleaning and maintenance methods of CNC plasma cutting machine.

1. Assemble the torch correctly

Install the cutting torch correctly and carefully, make sure that all parts are well-matched, and ensure that the gas and cooling airflow. Put all parts on a clean flannel to avoid dirt sticking to the parts. Add suitable appropriate lubricating oil to the O shape ring, make the O-ring bright will be the standard, be careful do not to add too much.

cnc plasma cutter plasma cutting torch

2. Consumable parts should be replaced in time before they are completely damaged

Replace the consumables with new ones before they are completely damaged, because severely worn electrodes, nozzles, and swirl rings will produce uncontrollable plasma arcs, which can easily cause serious damage to the torch. So when the cutting quality is found to be degraded for the first time, the consumable parts should be checked in time.

3. Clean the connecting thread of the torch

When replacing consumable parts or daily maintenance and inspection, be sure to ensure that the internal and external threads of the cutting torch are clean. If necessary, clean or repair the connecting threads.

4. Clean the contact surface of the electrode and the nozzle

In many cutting torches, the contact surface between the nozzle and the electrode is charged. If there is dirt on these contact surfaces, the cutting torch will not work properly and should be cleaned with a hydrogen peroxide cleaning agent.

5. Check the gas and cooling gas every day

Check the flow and pressure of the gas and cooling airflow every day. If you find that the flow is insufficient or leaks, you should stop the machine immediately to troubleshoot.

cnc plasma cutter servo motor

6. Avoid torch collision damage

To avoid collision damage to the cutting torch, it should be programmed correctly to prevent the system from overrunning. The installation of an anti-collision device can effectively avoid damage to the cutting torch during the collision.
The most common causes of torch damage
(1) The cutting torch collides.
(2) Destructive plasma arc caused by damage of consumable parts.
(3) Destructive plasma arc caused by dirt.
(4) Destructive plasma arc caused by loose parts.

7. Maintenance of water cooler

The water inside the water cooler needs to be replaced regularly, and the replacement frequency is generally a week. The quality and temperature of the circulating water directly affect the service life of the plasma cutting torch. It is recommended to use purified water or distilled water, and the water temperature should be controlled below 35. If the water is not changed for a long time, it is easy to form scale, so the water should be changed regularly.

8. Maintenance of dust removal system

After the fan is used for a long time, a large amount of dust will accumulate, which will affect the exhaust and deodorization effect, and also produce noise. If the fan suction is insufficient and the smoke is not exhausted smoothly, first turn off the power, remove the air inlet and outlet pipes from the fan, remove the dust inside, then turn the fan upside down, flip the blades inside until it is clean, and then install the fan.

hypertherm plasma power

9. Maintenance of transmission system

CNC plasma cutting machine equipment will produce smoke and dust during long-term cutting. Fine smoke and dust will pass through the dust cover and adhere to the guide frame. Long-term accumulation will increase the wear of the guide frame. The rack rail is a relatively accurate accessory. Dust deposited on the surface of the guide rail and linear axis for a long time has a great impact on the processing accuracy of the equipment and will form corrosion spots on the surface of the linear axis of the guide rail, Thus shortening the service life of the equipment. Therefore, to ensure the normal and stable operation of the equipment and ensure the processing quality of the product, dust removal and cleaning should be carried out regularly.

The above is a detailed introduction of the maintenance work of the CNC plasma cutting machine. During maintenance, the operation of each link and each system must be in place to prevent problems that affect the later use and also prevent the overall operation from being affected.

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