Plasma cutting consumables - electrode nozzle used in the process of how to maintain

1. Ensure correct plasma air pressure and flow rate.
Plasma is the right air pressure and flow is very important for the service life of consumable parts, If air pressure is too high. The life of the electrode can be greatly reduced; Air pressure is too low, the life of the nozzle will be affected.

2. Adopt the reasonable cutting height
According to the requirements of the instruction for use, adopt the reasonable cutting height,Cutting height is the distance between cutting nozzle and the workpiece surface, when the perforation, as far as possible use perforated slightly higher than the parameters in the table height value.

3. Perforation thickness should be within the scope of the machine system allows
Cutting machine can't work in more than the thickness of the steel plate on perforation, perforation thickness usually as normal cutting 1/2 (100 a), the thickness of the case: 100 a system as the cutting of 1 inch (25 mm) of carbon steel, the perforation thickness should be 0.5 inches (12.5 mm).

4. Nozzle do not overload use
Let the nozzle exceed over working current, will make the nozzle damaged very quickly. Current strength should be should be 95% of the working current of the nozzle. For example: 100 a of the nozzle should be set to the current strength of 95 A.

5. Keep the plasma dry and clean
Plasma system need to be dry and clean plasma can work normally, the dirt is usually a gas compression system problems, it will shorten the life of consumable parts, non-normal damage. Method to test the gas quality is cutting torch in test status, putting a mirror below, consume the gas inside the cutting torch, if appear on the mirror humidity and fog, you will need to find out the reason and correct.

6. Cutting should be started from the edge
As far as possible, starting from the edge of the cut, and don't punch cutting. Using edge as the starting point will prolong the life of consumable parts, the right approach is to aim the nozzle directly artifacts edges before you start the plasma arc.

7. Avoid plasma arc spin extension
If the plasma arc can only come into contact with the workpiece surface, elongated extension in plasma arc cutting was both the start and end the stretch and expand, it will cause the nozzle non-normal damage. If the right edge of the starting point skills, choose the right time to arc "break" signal, can avoid this problem.

8. Reduce unnecessary (or a guide arc ignition) time
Arc in the nozzle and electrode consumption are very fast, in before the start, should put cut metal cutting torch within walking distance.

9. Apply chemical coating on protection shell, prevent splash
Splash chemical coating helps reduce slag accumulation on the shell. But must will protect shell removed from the cutting torch to spray coatings.

10. Clear the slag on the shell
Often should clean up on the cutting torch to protect shell slag, otherwise the slag will cause a heavy destructive plasma arc.

11. Replacement of consumable parts after removal of gases
In the replacement of consumable parts or after a longer downtime, the gas should be removed (2-3 minutes advisable), in order to make sure the water and the mist from the eduction in cutting torch.

12. Try to keep the cutting torch and consumable parts clean Shanghai SaHaiBao komatsu electrode nozzle
Any dirt on the cutting torch and consumption will greatly affect the function of plasma system. Replacing consumable parts to put it in a clean flannelette, to check the connection of the cutting torch rib, with hydrogen peroxide, detergent cleaning electrode contact area and the nozzle.

13. Clear the oxide on the air or oxygen nozzle
Was elected with air or oxygen plasma, the nozzles will be deposited oxide, the oxide will affect the service life of air flow and reduce consumption. Use clean cloth to clean the inside of the nozzle can eliminate oxides.

14. Use demineralized water injection cutting torch
Hard water can cause precipitation of metal impurity on the nozzle ring, it will affect the air flow, reduce consumption of cutting torch quality and shorten life

15. Daily check the air flow and coolant flow
Cutting torch of the most common damage is one of the reasons for the lack of cooling flow standard, need to check the airflow to the cutting torch and air pressure (if gas cooled) or coolant (thus water), if it is found that air flow is not enough or leak, should immediately stop troubleshooting.