In terms of cutting accuracy, plasma can reach 1mm and laser can reach 0.2mm. Therefore, the accuracy of laser cutting machines is higher.
The laser cutting machine can realize non-contact cutting with the workpiece surface. The cutting gap is small, the precision is high, the Heat-affected zone is small, and the cutting end face is smooth without burrs. But the cutting gap of the plasma cutting machine is slightly larger, the cutting end face is rough and not smooth, and the cutting accuracy is low.
A laser cutting machine focuses the laser emitted by the laser into a high-power density laser beam through an optical system. The laser beam irradiates the surface of the workpiece to reach the melting or boiling point. At the same time, the high-pressure gas coaxial with the beam blows away the melted or evaporated metal. As the relative position of the beam and workpiece moves, the material will eventually form a slit, thereby achieving the purpose of cutting.
A plasma cutting machine is a gas that is heated to a very high temperature and highly ionized. It transfers arc power to the workpiece. The working state of plasma arc cutting is formed by high-temperature melting and blowing off the workpiece. Then, the plasma arc is used as a heat source to melt the metal. Cutting is a process where there is usually a certain arc during cutting faults. Therefore, when the cross-section we need is at right angles, the plasma cutting machine will no longer be suitable.
Laser cutting machines are suitable for cutting various materials: metal, non-metal, ceramic, glass, etc. Plasma cutting is suitable for cutting various metal materials, mainly thick plate cutting.
Due to the fact that laser cutting machines are composed of many precision parts and the high cost of mechanical parts, the procurement price of plasma cutting machines is much cheaper than that of laser cutting machines.
But in terms of consumables costs, the consumables cost of plasma cutting machines is very high. For example, the entire torch (nozzle, rotating ring, electrode, etc.) needs to be replaced within a few hours, and the plasma cutting machine consumes a lot of electricity. But the consumables cost of laser cutting machines is very low, and they are easily damaged without maintenance.
High cutting quality: small deformation, smooth cutting surface. The laser cutting groove is very small, and the laser cutting surface can be directly welded without the need for polishing.