With the application of laser cutting machine, sheet metal processing technology has developed rapidly, and has brought revolutionary ideas to sheet metal processing. As a traditional sheet metal cutting equipment, mainly CNC equipment, including the cutting machine, punch, flame cutting, plasma cutting, high pressure water cutting and so on, then what are the advantages of the laser cutting machine compared with it?CNC cutting machine is mainly straight cutting, although it can cut 4 meters long, but it can only be used in sheet metal processing that only needs straight cutting. It is usually used in industries such as cutting after Kaiping, and so on.
The CNC punch press has more flexibility in the curve processing. One can have one or more sets of square, circular or other special punches in the punch press. It can process some specific sheet metal parts at a time. The most common is the cabinet industry. The processing technology they require is mainly straight line, square hole, round hole and so on. Cutting, the pattern is relatively simple and fixed. Its advantages are fast processing of simple graphics and thin plates. The disadvantage is that the capacity of the steel plate is limited, even if the surface has a collapse, the die is long, the cost is high, and the degree of flexibility is not high.
As the original traditional cutting way, flame cutting is low in investment, the processing quality is not high in the past, and the process of machining can be solved when the requirement is too high, and the market is very large. Now it is mainly used to cut thick steel plates over 40mm. The disadvantage is that the thermal deformation during cutting is too large, the slotting is too wide, and the material is wasted. Furthermore, the machining speed is too slow, which is only suitable for rough machining.
Plasma cutting and fine plasma cutting are similar to flame cutting, the heat affected zone is too large, but the precision is much larger than the flame cutting, and the speed also has a magnitude leap, which has become the main force of the medium plate processing. The disadvantage is that when the thin steel plate is cut, the thermal deformation is too large and the slope is large.
High pressure water cutting is used to cut the sheet metal by doping emery in high speed water jet. It has almost no limitation on material, and the thickness of cutting can reach almost 100mm. The material that easily breaks when cutting ceramics and glass and so on is also cut. Copper and aluminum can cut the high reflective material water knife. But laser cutting has a big obstacle. The disadvantage of water cutting is that the processing speed is too slow, too dirty, not environmentally friendly, and consumables are also high.
Laser cutting is a technological revolution in sheet metal processing, and a "machining center" in sheet metal processing. Laser cutting has high flexibility, fast cutting speed, high production efficiency, short product life cycle, and has won wide market for customers. Laser cutting has no cutting force, no deformation, no tool wear, good adaptability of the material; no matter it is simple or complex part, it can be cut with laser first precision rapid forming; the cutting seam is narrow, the cutting quality is good, the automation is high, the operation is simple, the labor intensity is low, no pollution; it can realize the automatic cutting. Sample and nesting improve material utilization, low production cost and good economic benefit. The effective life period of the technology is long. At present, laser cutting is mostly used in the oversea superstructure 2 millimeter plates. Many foreign experts agree that the next 30-40 years are the golden period for the development of laser processing technology.
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