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Material metal, triangular sieve plate with 5(mm) holes in ceramic plate thickness, filtering, laser cutting and drilling technology of mechanical parts and the application of laser cutting and drilling are the processes of melting materials with high energy density laser beams and removing the melted materials with high pressure gas. 4. 1 Advantages of laser cutting (1) Narrow slit, clean cutting surface and no slag hanging. (2) The heat affected zone of the notch is small, and the workpiece deformation is small. (3) High cutting accuracy, good repeatability, small machining error, fast cutting speed and low noise. (4) AutoCAD graphics can be directly converted into laser cutting files, which is suitable for cutting parts with complex shapes. 4.2 Advantages of laser drilling (1) Fine deep holes with a minimum diameter of 0. 1mm can be drilled, with high drilling accuracy and good repeatability. (2) Inclined holes, special-shaped holes, hollow holes and complicated cooling channel holes can be drilled on the inclined plane. (3) Perforation can be carried out on very hard ceramic parts and cemented carbide parts. (4) Laser drilling has no tool wear and high processing efficiency. (5) High-density micropores can be made on thin plate materials. 4.3 Laser for laser cutting drilling ● PROFILE(PLUS) CNC laser cutting system 5KW longitudinal CO2 laser is imported from ROFIN TRIAGON Company in Germany. The power and output mode of laser are controlled by computer, linked with numerical control system, and built-in CAD/CAM software package, which can be used for laser cutting, laser welding, laser drilling and laser three-dimensional free forming of metal parts. It has great advantages in laser cutting and steel plate blanking. 4.4 Application example of laser cutting 4.4-a spring steel sheet. Application example of laser cutting 4.5 laser drilling 4.5-a ceramics. φφ0.5mm hole. Laser drilling. Laser etching technology and application Laser etching, also known as "laser honing", uses high-energy pulsed laser beams to etch the surface of parts with a width of 10 ~ 50 microns and a depth of 5 ~ 100 microns. Laser etching can accurately control the depth and pattern of grooves. The thin grooves etched by laser play the role of storing oil and collecting wear debris during the movement of the friction pair, which reduces the friction coefficient and greatly improves the service life of the friction pair. Laser etching is especially suitable for all kinds of friction pairs working in high-pressure, high-speed and heavy-load environments, such as the inner wall of cylinder block of high-speed and high-pressure air compressor and cylinder liner of large diesel locomotive. 5. 1 industrial application of laser etching 5. 1-a etching line width 10 micron 5. 1-b cylinder liner of internal combustion engine. Laser etching