What are the commonly used cutting methods in Profile Steel Cutting

The commonly used cutting methods in Profile Steel Cutting mainly include the following:
Flame Cutting:
Principle: It utilizes a high-temperature flame generated by the combustion of a mixture of fuel gas (such as acetylene, propane, natural gas, etc.) and oxygen to heat the surface of the steel to its ignition point. Then, the molten metal is blown away by a high-pressure oxygen stream to achieve cutting.
Characteristics: The equipment is simple and the cost is low. It is suitable for cutting thick steel sections. However, it has a large heat-affected zone, significant thermal deformation, and relatively low cutting accuracy.
Plasma Cutting:
Principle: It uses a high-temperature plasma arc (with temperatures reaching up to 10,000-30,000°C) to melt and blow away the steel, completing the cutting process. The plasma arc is generated by ionizing the gas through the application of a high-frequency electric field between the electrode and the workpiece.
Characteristics: It offers fast cutting speeds, narrow kerfs, and a small heat-affected zone. It can cut a wide range of thicknesses (generally around 0.5-100mm) and is suitable for cutting medium to thin steel plates, such as stainless steel plates and aluminum plates.
Laser Cutting:
Principle: It focuses a high-energy-density laser beam onto the surface of the steel, causing the steel to melt or vaporize instantaneously to achieve cutting.
Characteristics: It provides high cutting accuracy (up to ±0.1mm), smooth cuts without burrs, and can cut various complex shapes. However, the equipment cost is relatively high, and it is suitable for cutting thin plates (with thicknesses typically around 0.5-20mm).
Water Jet Cutting:
Principle: It uses a high-pressure water stream (sometimes mixed with abrasives) to cut the steel.
Characteristics: It is environmentally friendly, safe, and has a wide range of applications. It can cut steel plates of various thicknesses. However, the cutting speed is relatively slow, and the equipment cost is high.