Jinan REBOUND CNC machine co.,ltd is manufacture of CNC plasma cutting machine, CNC fiber laser cutting machine, CNC fiber laser marking machine, CNC laser welding machine, CNC laser cleaning machine, CNC router machine. All the products are sold all over the world. Today I will show you how to extend the service life of CNC plasma cutting machine.

1. Keep the gas of CNC plasma cutting machine dry and clean.

The plasma cutting machine system needs dry and clean gas to work normally. Dirty gas is usually the problem of gas compression system, which will shorten the service life of consumer parts and cause abnormal damage. The method to test the gas quality is to set the cutting torch in the test state and put a mirror under it to consume the gas in the cutting torch. If water vapor and mist appear on the mirror, it is necessary to find out the cause and correct it. At the same time, it is also necessary to ensure the correct air pressure and flow of the plasma cutting machine. The correct air pressure and flow of plasma cutting machine is very important for the service life of consumables. If the air pressure is too high, the service life of plasma nozzle and electrode will be greatly reduced; If the air pressure is too low, the life of plasma nozzle and electrode will be affected. After replacement of consumable parts or long-term shutdown, the gas shall be removed (2-3 minutes is appropriate) to ensure that the water and mist are discharged from the cutting torch.

2. Do not overload the nozzle and electrode of CNC plasma cutting machine.

Overloading the nozzle (i.e. exceeding the working current of the nozzle) will quickly damage the nozzle. The current intensity should be 95% of the working current of the nozzle. For example, the current intensity of 100A nozzle should be set to 95A. Reduce unnecessary "arc striking (or arc guiding)" time of NC plasma cutting machine. During arc starting, the consumption of nozzle and electrode of NC plasma cutting machine is very fast. Before starting, the cutting torch should be placed within the walking distance of cutting metal. Remove oxides from air or oxygen nozzles.

When air or oxygen plasma is selected, oxides will be deposited in the nozzle, which will affect the air flow and reduce the service life of consumer parts. Wipe the inside of the nozzle with a clean lint cloth to eliminate oxides.

3. Adopt reasonable plasma cutting distance

According to the requirements of the operation manual, a reasonable cutting distance shall be adopted. The cutting distance is the distance between the cutting nozzle and the workpiece surface. In case of perforation, try to use the distance twice the normal cutting distance or the maximum height that can be transmitted by plasma arc. CNC plasma cutting machine can not punch on the steel plate exceeding the working thickness. The usual perforation thickness is 1 / 2 of the normal cutting thickness.

4. CNC plasma cutting shall start from the edge of metal plate

As far as possible, start plasma cutting from the edge of the metal plate instead of perforation cutting. Using the edge as the starting point will prolong the service life of plasma vulnerable parts. The correct method is to directly align the nozzle with the edge of the workpiece and then start the plasma arc.

5. Apply anti splash chemical coating on the protective shell of plasma cutting torch

The splash proof chemical coating helps to reduce the accumulation of slag on the protective shell. However, the protective shell must be removed from the cutting torch before anti splash coating can be applied. At the same time, we should also remove the slag on the protective shell, otherwise this slag will cause destructive heavy plasma arc.

6. Try to keep the cutting torch and consumables of CNC plasma cutting machine clean

Any dirt on the cutting torch and consumable parts will greatly affect the function of the plasma system. When replacing consumable parts, place them on a clean flannelette, often check the connecting thread of the cutting torch, and clean the electrode contact surface and nozzle with hydrogen peroxide detergent.

7. Check the plasma flow and cooling flow every day

One of the most common causes of cutting torch damage is the lack of cooling flow. It is necessary to often check the air flow and air pressure (such as air cooling) or coolant (such as water cooling) to the cutting torch. If it is found that the air flow is insufficient or leaked, it shall be shut down immediately to eliminate the fault. When softened water is injected into the cutting torch, hard water will cause metal impurities to precipitate on the nozzle ring, which will affect the air flow, reduce the quality of the cutting torch and shorten the service life of consumables.

The above are 7 methods to extend service life of CNC plasma cutting machine.