Enterprises specializing in the production of CNC cutting machine, CNC flame cutting machine, CNC plasma cutting machine and other CNC cutting equipment manufacturers. The CNC plasma cutting machine produced has the characteristics of fast cutting speed, smooth surface, and many cutting materials, which is loved by customers. However, 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. Wuhan resistance to tyrants numerical control to everybody introduces 15 commonly used methods, in order to reduce the plasma cutting machine to use the consumable material cost as far as possible:
1, the use of a reasonable cutting height in accordance with the requirements of the instructions, the use of a reasonable cutting height, cutting height is the distance between the cutting nozzle and the workpiece surface, when piercing, try to use slightly higher than the perforation height in the parameter table, this guarantee Cutting slag damage to the cutting nozzle and sheet temperature damage to the cutting nozzle.
2. Ensure that the correct gas pressure and flow of the plasma The correct gas pressure and flow are very important for the 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 to allow the nozzle to be overloaded (that is, to exceed the operating current of the nozzle), which will cause the nozzle to be damaged quickly. 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: 100A system is set to cut 1 In inch (about 25mm) carbon steel, the perforation thickness of the system should be 0.5 inches (about 12.5mm).
5. Maintain plasma gas drying and clean The plasma system needs dry and clean plasma gas to work properly. Dirty gas is usually a problem of 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 and start cutting as much as possible from the edge instead of perforation cutting. 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. Reducing unnecessary arcing (or arcing) time The nozzle and electrode consumption are very fast when starting the arc. Before starting, the torch should be placed within the walking distance of the cutting metal.
8, to avoid the plasma arc elongated expansion If the plasma arc can only reach the surface of the workpiece with extended elongation, the plasma arc will produce such stretching and expansion at the beginning and 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 the protective shell The splash-resistant chemical paint helps to reduce slag accumulation on the protective shell. However, be sure to remove the protective shell from the torch before applying paint.
10, after the replacement of consumables to remove gas After the replacement of consumables or a longer period of shutdown, the gas should be removed (2-3 minutes is appropriate), in order to maintain the water and the mist from the separatist discharge.
11. Remove the slag from the protective shell. The slag on the torch shield should always be removed. Otherwise, this 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. Removal of Oxygen from Air or Oxygen Jets When air or oxygen plasmas are used, oxides can be deposited in the nozzles. This oxide can affect air flow and reduce the life of consumables. Wipe the inside of the nozzle with a clean fleece to eliminate oxides.
14. The use of demineralized water to inject torch hard water will cause metal impurities to precipitate on the nozzle ring, which will affect the air flow, reduce torch quality and shorten the life of consumable parts.
15. Daily check of airflow and coolant flow One of the most common causes of damage to the torch is the lack of cooling flow. It requires frequent checks of torch flow and air pressure (if air cooled) or coolant (if water cooled) if found. When the air flow is insufficient or leaks, it should be stopped immediately to eliminate the malfunction.
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