CNC plasma cutting machine using skills and cutting knowledge

The CNC plasma cutting machine combines a simple and easy-to-use numerical control system to ionize a high-speed air jet ejected at a nozzle at a high temperature to form an electrical conductor. When the current is passed, the conducting gas forms a high temperature plasma arc, the heat of the arc locally melting (and evaporating) the metal at the workpiece cut, and a method of processing the molten metal to form a slit by the power of the high velocity plasma gas stream. The elongated and stable plasma arc formed by the annular airflow technique ensures that any conductive metal can be cut smoothly and economically.

When using a CNC plasma cutting machine, the cutting quality is unstable, and the wearing parts are frequently replaced. Discover more about the user's use of the operation of the CNC plasma cutting machine is not standardized, and at the same time the attention paid to some of the details of the problem is not enough, here we summarize some of the daily use of some CNC plasma cutting machine tips and hope to bring you convenience.

1. Cut as much as possible from the edge, not perforation. 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.
2. The nozzle and electrode are consumed very quickly when starting the arc. Before starting, the torch should be placed within the cutting metal walking distance.
3. Do not overload the nozzle. Use the nozzle overload (ie, exceed the operating current of the nozzle), will make the nozzle quickly damaged. 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. According to the requirements of the instruction manual, use a reasonable cutting distance, the cutting distance is the distance between the cutting nozzle and the surface of the workpiece. When piercing, try to use twice the distance of the normal cutting distance or the maximum height that can be transmitted by the plasma arc.
5. The cutter cannot pierce the steel plate beyond the working thickness. The perforation thickness should be within the allowable range of the machine system. The usual perforation thickness is 1/2 of the normal cutting thickness.
6. Any dirt on the torch and consumables can greatly affect the function of the plasma system. When replacing consumables, place them on a clean flannel. Always inspect the torch's connection ribs. Use hydrogen peroxide-based cleaners to clean the electrode contacts and nozzles. Keep the torch and consumables as clean as possible.
7. CNC plasma cutting machine gas selection tips and points, CNC plasma cutting machine usually has a high no-load voltage and working voltage, when using high ionization energy gas such as nitrogen, hydrogen or air, the need to stabilize the plasma arc The voltage will be higher. When the current is constant, an increase in voltage means an increase in the arc enthalpy and an increase in the cutting ability. If the diameter of the jet is reduced and the flow rate of the gas is increased while the enthalpy is increased, a faster cutting speed and a better cutting quality are often obtained. The use and selection of gas in the CNC plasma cutting machine is very important. The use of gas will seriously affect the cutting precision and slag.

CNC plasma cutting machine Air-cooled cutting torch refers to the air-cooled plasma cutting torch, which is mainly concentrated in the plasma power supply within 100A. Generally, the common CNC plasma cutting machine is matched with different types of cutting torch according to the cutting plate thickness. Here we The air-cooled CNC plasma cutting machine torch is mainly distinguished from the water-cooled cutting torch. It is generally suitable for cutting and processing metal materials such as stainless steel and carbon steel below 10mm. The air-cooled cutting torch is also called air-cooled cutting. The torch, in short, is to reduce the surface temperature of the torch by natural cooling of the air for long-term use. Air-cooled torches have a shorter service life due to different cooling methods.