The application cost of the CNC plasma cutting machine is a problem most concern to every CNC cutting machine company. How to extend the service life of the power consumption parts of the CNC plasma cutting machine. The following only discusses the application experience from the characteristics of the plasma power cutting system. As to how to use a CNC cutting machine cutting process to achieve a solution including reducing the consumption of plasma power consumption components and the like, a solution to reduce the production cost is described.
First, use a reasonable cut length
According to the requirements of the instruction manual, a reasonable cutting distance is adopted, and the cutting distance is the distance between the cutting nozzle and the surface of the workpiece. When perforating, the normal cutting distance of 2 times or the maximum height that can be transmitted by the plasma arc is adopted as far as possible.
Second, ensure the correct pressure and flow of plasma
The correct plasma 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.
Third, 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.
Fourth, 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.
6. The use of demineralized water to inject torch hard water can cause metal impurities to precipitate on the nozzle ring, which will affect the flow of air, reduce torch quality and shorten the life of consumable parts.
VII. Daily Inspection of Airflow and Cooling Flow One of the most common causes of torch damage is the lack of cooling flow, which requires frequent checks of torch flow and air pressure (if air-cooled) or coolant (if water-cooled) if insufficient airflow is found. When leaked, it should be stopped immediately to eliminate the malfunction.
VIII. Ensure that the correct gas pressure of the plasma and the correct pressure and flow of the flowing plasma are 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.
9. Use a reasonable cutting distance in accordance with the requirements of the instruction manual, using a reasonable cutting distance, cutting distance that cuts the distance between the nozzle and the workpiece surface, when piercing, try to use the normal cutting distance of 2 times or the use of plasma arc can be transmitted The maximum height.
X. Do not overload the nozzle. Use a nozzle that is overloaded (ie, exceeds the operating current of the nozzle), which 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.
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