1.Comparison of application range
Laser cutting machine has a wide range of applications, metal and non-metal can be cut, non-metal, such as fabric, leather, etc. can be cut with CO2 laser cutting machine, metal can be cut with fibre laser Cutting machine. The deformation of the plate is small.
Water cutting belongs to cold cutting, no thermal deformation, good quality of cutting surface, no need for secondary processing, and it is easy to carry out secondary processing when necessary. Water cutting can perforate and cut any material with fast cutting speed and flexible processing size.
Plasma cutting machine can be used to cut stainless steel, aluminium, copper, cast iron, carbon steel and many other metal materials. Plasma cutting thermal effect is obvious, low precision, the cutting surface is not easy to secondary processing.
Wire cutting can only cut conductive materials, the cutting process requires the use of cutting coolant, so it can not cut paper, leather and other non-conductive, afraid of water, afraid of cutting coolant pollution of the material.
2. Cutting thickness comparison
Industrial applications of laser cutting carbon steel is generally less than 20mm. Cutting capacity is generally below 40mm. Industrial applications of stainless steel is generally less than 16mm, cutting capacity is generally less than 25mm. And as the thickness of the workpiece increases, the cutting speed is significantly reduced.
Breakthrough 30mm fibre laser cutting plate.
Water cutting thickness can be very thick, 0.8-100mm, even thicker materials.
Plasma cutting thickness of 0-120mm, the best cutting quality range of about 20mm plasma system is the most cost-effective.
Wire cutting thickness is generally 40-60mm, the maximum thickness of up to 600m.
3. Cutting speed comparison
The use of power 1200W laser cutting 2mm thick mild steel plate, cutting speed up to 600cm/min; cutting 5mm thick polypropylene resin plate, cutting speed up to 1200cm/min. Line cutting can achieve the cutting efficiency is generally 20 to 60 square millimetres / min, up to 300 square millimetres / min; Obviously, the laser cutting speed, can be used for mass production.
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Water cutting is quite slow and not suitable for mass production.
Plasma cutting cuts slowly and with low relative accuracy, more suitable for cutting thick plates, but with bevelled ends.
For metalworking, wire cutting is more accurate but very slow. Sometimes it is necessary to use other methods for additional perforation and threading cutting, and the cutting size is greatly restricted.
4. Comparison of cutting accuracy
Laser cutting kerf is narrow, the two sides of the kerf are parallel and perpendicular to the surface, and the dimensional accuracy of the cut pieces can reach ± 0.2mm.
Plasma can reach within 1mm.
Water cutting does not produce thermal deformation, accuracy ± 0.1mm. If the dynamic water cutting machine, can improve the cutting accuracy, cutting accuracy of up to ± 0.02mm, to eliminate the cutting slope.
Wire cutting processing accuracy is generally ± 0.01 ~ ± 0.02mm, up to ± 0.004mm.
5. Comparison of slit width
Compared with plasma cutting, laser cutting precision is higher, the slit is small, about 0.5mm.
Plasma cutting slit is larger than laser cutting, about 1-2mm.
The water cutting slit is about 10% larger than the diameter of the cutter tube, generally 0.8-1.2mm. As the diameter of the abrasive cutter tube expands, the slit becomes larger.
Line cutting the minimum width of the kerf, generally around 0.1-0.2mm.
6. Cutting surface quality comparison
The surface roughness of laser cutting is not as good as water cutting, and the thicker the material the more obvious.
Water cutting does not change the texture of the material around the slit (laser is thermal cutting, which will change the texture around the cutting area).
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