Fifteen points to extend the life of plasma cutting machine supplies tips summary

Fifteen points to extend the life of plasma cutting machine supplies tips summary:

Plasma supplies in the maintenance cost of CNC plasma cutters are a matter of great concern to customers. Cnc plasma cutting machine is one of the types of CNC cutting machine, also
Is a large one-time investment of a large device. Whether it is the United States Hypertherm, Flymatt or Germany Kelbe and other world's top ion cutting machines, although the cutting quality is good, but the problem of supplies can not be underestimated, how to take an effective approach to reduce losses is also a cost-saving
An effective means! As long as you pay attention to the problems mentioned in this article, can generally make the longgan-type CNC plasma cutting machine service life and maintenance costs to a large extent improved. Here's how to use the common methods to minimize the cost of plasma consumables:
1, the use of reasonable cutting height
In accordance with the requirements of the instruction manual, the use of reasonable cutting height, cutting height is the distance between the cutting nozzle and the surface of the workpiece, when perforated, as far as possible to use slightly higher than the perforated height value in the parameter table.
2, to ensure that the correct plasma air pressure and flow
The correct air pressure and flow of the plasma is very important to the life of the consuming parts. If the air pressure is too high, the life of the electrode will be greatly reduced;
3, nozzle do not overload use
Overloading the nozzle (i.e. exceeding the operating current of the nozzle) will cause the nozzle to damage quickly. The current strength should be 95% of the operating current of the nozzle. For example, the current strength of the 100A nozzle should be set to 95A.
4, perforated thickness should be within the permitted range of the machine system
The cutter cannot perforate on steel plates that exceed the working thickness, usually 1/2 (below 100A) of normal cutting thickness, for example, a 100A system is defined as cutting 1 inch (about 25 mm) of carbon steel, the system perforated thickness should be 0.5 inches (about 12.5 mm).
5, keep the plasma gas dry and clean
Plasma systems require dry and clean plasma gas to function properly, and dirty gases are usually problems with gas compression systems, which shorten the life of consumed parts and cause abnormal damage. The method of testing the quality of the gas is to place the torch in the test state, place a mirror under it, and consume the gas in the torch, and if there is moisture and fog on the mirror, the cause needs to be identified and corrected.
6. Cutting should start at the edge
Cut as early as possible from the edge, without perforating the cut. Using the edge as the starting point extends the life of the consumables, and the correct approach is to point the nozzle directly at the edge of the workpiece before starting the plasma arc.
7. Reduce unnecessary "arcing (or arcing) time
The nozzle and electrode consumption is very fast when the arc ingests, and the torch should be placed within the cutting metal walking distance before starting.
8. Avoid plasma arc elongating expansion
If the plasma arc can only reach the surface of the workpiece by elongating the extension, the plasma arc will produce this stretchand and expansion at the beginning and end of the cutting, which will cause abnormal damage to the nozzle. If you use the correct edge starting technique, choose the right "arc break" signal time,
This problem can be avoided.
9. Apply splash-proof chemical coatings to the protective case
Splash-resistant chemical coatings help reduce the accumulation of slag on the protective shell. However, be sure to remove the protective case from the torch before applying splash-proof paint.
10. Remove gas after replacing consumables
After replacing the consumables or a prolonged shutdown, remove the gas (2-3 minutes is appropriate) to protect water and fog from the cut.
11. Remove slag from the protective shell
The slag on the torch protector should be removed frequently, otherwise it will cause a destructive heavy plasma arc.
12. Keeping torches and consumables as clean as possible on any dirt on the torchand and consuming parts can greatly affect the function of the plasma system. When replacing the consumables, place them on a clean velvet cloth, check the torch's connection lines frequently, and clean the electrode contact surface and nozzle with hydrogen peroxide cleaner.
13. Remove oxides from air or oxygen nozzles
When air or oxygen plasma is selected, oxides are deposited in the nozzle, which affects airflow and reduces the life of consumables. Wipe the inside of the nozzle with a clean velvet cloth to remove the oxides.
14. Injection torch with softened water
Hard water causes metal impurities to precipitate on the nozzle ring, which affects air flow, reduces torch quality and shortens the life of the consumed parts.
15. Daily inspection of air flow and coolant flow
One of the most common causes of torch damage is the lack of cooling, which requires frequent inspection of the torch's air flow and air pressure (e.g. air-cooled) or coolant (e.g. water-cooled), and should be stopped immediately to troubleshoot if air flow is not enough or leakage is found.