Characteristics of laser cutting machine

Characteristics of laser cutting machine 1. Fast cutting speed, smooth and flat incision, no burrs; 2. The cut is narrow, with minimal deformation, and the material on the cutting surface does not harden; 3. High machining accuracy and good repeatability; 4. CNC programming is simple, with a wide range of processing capabilities, no need for mold making, and is economical and time-saving; Types of auxiliary air sources 1. Nitrogen: Generally used as an auxiliary gas source for processing precious metals or when high processing requirements are necessary; 2. Oxygen: Due to the strong oxidizing nature of high-purity oxygen, the cutting surface will turn black and its hardness will increase, commonly known as "charring"; 3. Compressed air: It has a wide range of applications. The air itself, which exists in the atmosphere and contains about 20% oxygen, can compensate for the shortage of oxygen and nitrogen to a certain extent. The cost of gas source Since the cost of nitrogen and oxygen is higher than that of compressed air, and the prices of nitrogen and oxygen are rising year by year, using air as the cutting auxiliary gas can greatly reduce production costs by about half. The role of high-pressure gas source 1. Cooling prevents the material from hardening, that is, being heat-treated; 2. The air pressure blows away the molten metal slag, preventing dust from clogging the laser nozzle, thus protecting it and extending its service life; Requirements of laser cutting machine for compressed air source Laser cutting machines have relatively high requirements for the compressed air source, which must be free of water and oil. Generally, users equip with four-stage or even five-stage filtration to better protect the service life of the laser cutting machine. If the air source entering the cutting head contains water and oil, it will cause fogging of the protective lens in a short period of time, affecting the cutting quality. If the protective lens is not replaced in time, under the irradiation of high-power beams, the internal temperature of the cutting head may rise, causing damage to the internal lens group. Post-processing installation and layout 1. The compressor is positioned closely to the laser cutting machine, and the cold dryer filter is connected in sequence; 2. Given the long distance between the compressor and the laser cutting machine, two filters are installed at the usage terminal to treat residual water and oil in the long-distance pipeline;