Customers often reflect such a problem: the cost of using a CNC plasma cutting machine is too high! In order to allow customers to obtain greater benefits at the lowest cost. We will introduce the commonly used fifteen methods to reduce the cost of using consumables for plasma cutting machines as much as possible:

1, using a reasonable cutting height

According to the requirements of the instruction manual, a reasonable cutting height is adopted, and the cutting height is the distance between the cutting nozzle and the workpiece surface. When perforating, the perforation height value slightly higher than in the parameter table is used as much as possible so as to ensure the slag of the plate in cutting. Damage to the cutting nozzle and damage to the cutting nozzle due to the temperature of the plate.

2, ensure the correct pressure and flow of plasma

The correct air pressure and flow are very important to the service life of the consumables. If the pressure is too high, the life of the electrode will be greatly reduced; air pressure is too low, the life of the nozzle will be affected.

3, the nozzle should not be overloaded

Overloading the nozzle (ie, exceeding the operating current of the nozzle) will cause the nozzle to quickly deteriorate. The current intensity should be 95% of the operating current of the nozzle. For example, the current intensity of a 100A nozzle should be set to 95A.

4. The perforation thickness should be within the allowable range of the machine system

The cutting machine can not pierce the steel plate beyond the working thickness. The usual perforation thickness is 1/2 of the normal cutting thickness (below 100A). For example, the 100A system is set to cut 1 inch (about 25mm) of carbon steel. The system is perforated. The thickness should be 0.5 inches (about 12.5 mm).

5, keep the plasma gas dry and clean

The plasma system needs dry and clean plasma gas to work properly. Contaminated gas is usually a problem with the gas compression system. It will shorten the service life of the consumables and cause abnormal damage. The method for testing the gas quality is to set the torch in the test state and put a mirror under it to consume the gas in the torch. If moisture and mist appear on the mirror, you need to find out the reason and correct it.

6, cutting should start from the edge

Cut as much as possible from the edge instead of piercing the cut. Using the edge as a starting point will prolong the life of the consumable. The correct method is to align the nozzle directly at the edge of the workpiece and then start the plasma arc.

7. Reduce unnecessary arcing (or arcing) time

At the start of arcing, the consumption of nozzles and electrodes is very fast. Before starting, the torch should be placed within the walking distance of the cutting metal.

8, avoid plasma arc extension

If the plasma arc can only reach the surface of the workpiece when it is extended and extended, the plasma arc will produce such stretching and expansion at the beginning and the end of the cutting, which will cause abnormal damage to the nozzle. This problem can be avoided if the right edge start technique is used and the appropriate “off-of-arc” signal time is chosen.

9. Apply splash-proof chemical paint on protective shell

Splash-proof chemical paint helps to reduce slag deposits on the protective shell. However, be sure to remove the protective shell from the torch before applying paint.

10. Remove gas after replacing consumables

After replacing the consumables or a longer period of shutdown, the gas should be removed (2-3 minutes is appropriate) to retain water and mist from the segregation.

11, remove the slag on the protective shell

The slag on the torch shield should always be removed, otherwise the slag will cause a destructive heavy plasma arc.

12, try to keep the torch and consumables clean

Any dirt on the torch and consumables can greatly affect the function of the plasma system. When replacing the consumables, place them on a clean flannel. Always check the connection ribs of the torch and clean the electrode contact surfaces and nozzles with hydrogen peroxide-based cleaner.

13. Remove oxides from air or oxygen nozzles

When air or oxygen plasma is used, oxides are deposited in the nozzle. This oxide can affect airflow and reduce the life of consumables. Wipe the inside of the nozzle with a clean fleece to eliminate oxides.

14, using softened water injection cutting torch

Hard water can cause metal impurities to precipitate on the nozzle ring, which will affect airflow flow, reduce torch quality, and shorten the life of consumable parts.

15. Check airflow and coolant flow daily

One of the most common causes of damage to the torch is the lack of cooling flow. It is necessary to constantly check the gas flow and pressure (if air cooling) or coolant (if water cooling) to the torch. If the airflow is found to be insufficient or leaking, stop immediately. Troubleshooting.

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