What is the relationship between the nozzle and the quality of laser cutting processing

The coaxiality between the center of the nozzle exit hole and the laser beam is one of the important factors affecting the quality of laser cutting. The thicker the workpiece, the greater the impact. When the nozzle is deformed or has melting stains, it will directly affect the coaxiality. Therefore, the nozzle should be stored carefully to avoid bumps to avoid deformation. The shape and size of the nozzle are manufactured with high precision, and the correct method should be paid attention to when installing. If the condition of the nozzle is poor, and various conditions during cutting need to be changed, it is better to replace the nozzle with a new one. If the nozzle and the laser are not coaxial, it will have the following effects on the quality of laser cutting. Impact on the cutting section    When the auxiliary gas is blown out from the nozzle, the gas volume is uneven, and there is a phenomenon that there are melting stains on one side and not on the other side. When cutting thin plates below 3mm, its impact is small, when cutting more than 3mm, the impact is more serious, and sometimes it cannot be cut through. Impact on sharp corners    When the workpiece has sharp corners or small angles, overmelting is easy to occur, and thick plates may not be cut.   Impact on perforation   Perforation is unstable, time is not easy to control, it will cause overmelting to thick plates, and the penetration conditions are not easy to grasp. The impact on the thin plate is small.