A plasma cutting machine is a device that uses a high-temperature plasma arc to cut metal. It creates a high-energy-density plasma beam by ionizing gas, rapidly melting and blowing away the material. It is suitable for processing conductive metals such as stainless steel, carbon steel, and aluminum alloys.
The core principle of a plasma cutting machine is to ionize gas (such as air or nitrogen) using a DC power supply to form a plasma arc with a temperature exceeding 20,000°C. The equipment mainly consists of a power supply system, a gas control module, a cutting torch, and a cooling device: the power supply provides a stable current, the gas control module regulates the airflow pressure, the cutting torch focuses the plasma beam, and the cooling device prevents the torch from overheating through circulating water or air cooling. During cutting, the plasma arc contacts the metal surface, and the localized material rapidly melts and is blown away by the high-speed airflow, forming a narrow kerf.