Plasma Kerf Width
The plasma cutting kerf width is the width of the cut groove in plasma cutting. It is determined by plasma gas flow, arc power, and nozzle diameter, and affects the heat-affected zone at the cut edges.
Physical-Chemical Mechanism of Action
The plasma cutting kerf width results from the interaction between the plasma gas, the electric arc power, and the nozzle diameter. A larger gas volume or higher power increases the kerf width, while a larger nozzle diameter narrows it.
Metallurgical Relevance & Welding Risks
A kerf width that is too large leads to a wider heat-affected zone and can cause uneven distortion or damage to the material structure. A kerf width that is too small can result in fine cutting residue that is hard to remove, or the material may not be heated through sufficiently.
Workshop Practice & Operating Instructions
To achieve an optimal plasma cutting kerf width of 0.3 to 0.5 mm, use the following parameters: plasma gas flow set to 20 l/min, electric arc power set to 150 kW, and a nozzle diameter of 4 mm. Continuously monitor the temperature and distortion of the material.