The basic principle and characteristics of fiber cutting machine laser

First, the principle of fiber laser cutting
Focused laser beam into a small spot (the smallest diameter less than 0.1 mm), achieve high power density, making light of materials at the spot was quickly heated to gasification temperature, evaporation hole formation, chase the speed of light relative movement and material to make the hole continuously, form the kerf width is very narrow.

Second, the characteristics of the laser cutting
A. good cutting quality.Because of the small laser spot, high energy density, a laser cutting can get better cutting quality.Laser cutting slot is in commonly 0.1 0.2 mm, heat affected zone width is small, good kerf geometry, kerf width of rectangular cross section presents more rules.Laser cutting cutting surface, no burrs, surface roughness R generally can reach more than 12.5 um, laser cutting and even as a final machining process, the cutting surface is generally not need to processing can be directly welded, parts can be used directly.
B. cutting speed is fast.Laser cutting speed is faster.Using 2 kv laser power, for example, 8 mm thick carbon steel cutting speed 1.6 m/min, 2 mm thick stainless steel cutting speed 3.5 m/min. Hesitation when laser cutting, work piece heat affected zone is small, deformation, do not need to be fixed clamping, can both save the clamping fixture, and saves the clamping auxiliary time, etc.

C. can be variety of cutting materials.In the oxygen - ethane cutting and plasma cutting, cutting methods, laser cutting class cutting material sort is more, including metal, nonmetal, metal and nonmetal based composite material, etc.For different materials, because of material itself the absorptance of laser is thermal physical properties and different, show different laser cutting adaptability.
D. is suitable for large products processing.Large products mould manufacturing cost is very high, laser processing does not need any mold, and laser machining completely avoid material shearing formed when the collapse edge, can greatly reduce the production cost of enterprise, enhance the grade of the product.
E. clean, safe, no pollution.Laser cutting in the process of low noise, small vibration, no pollution, greatly improved the working conditions of operators.
F. susceptible to electromagnetic interference.Unlike electron beam machining, laser machining is not sensitive to electromagnetic interference, without vacuum environment.