Plasma cutting and precision plasma cutting are similar to flame cutting. The heat affected zone is too large, the precision is much larger than the flame cutting, and the speed has an order of magnitude leap. It has become the main force in the processing of the middle plate.
High-pressure water cutting is the application of high-precision water jet doped diamond to cut the sheet metal. It has no restrictions on the material, and the thickness of the cutting can reach 100mm or more. It is also easy to burst when hot cutting is used for ceramics and glass. It can cut, copper, aluminum, etc,which is material of high-reflection , but laser cutting has a big obstacle. The drawback is that the processing speed is too slow, too dirty, not environmentally friendly, and the cost is high.
Laser cutting is a process reaction of sheet metal processing, and is the "machining center" in sheet metal processing;
Laser cutting has a high level of flexibility, fast cutting speed, high consumption efficiency, and short product consumption cycle, which has won a common market for customers. Laser cutting has no cutting force, no deformation in processing; no tool wear and good material compliance; whether simple or complex parts, it can be finished by laser cut.The cutting is fast; its slit is narrow, cutting quality is good, automation level is high.Low in labor intensity, and free from pollution; it can complete automatic cutting and increase material utility.At present, most of the plates that exceed the thickness of 2 mm in foreign countries is cut by laser cutting. Many foreign experts agree that the next 30-40 years is the golden period of laser processing technology (the direction of sheet metal processing).
Generally speaking, it is recommended to use laser cutting on cutting carbon steel plates within 20mm, stainless steel plates and non-metallic materials such as acrylic and wood boards within 10mm. The steel plates within 20-50mm are recommended for plasma cutting, and the thicker steel plates are cut by flame-cut. Use waterjet to cut high-reflection materials:copper, aluminum and fragile non-metallic materials such as glass and marble. Manufacturers of chassis cabinets within 1mm use CNC punching machines in large quantities and relatively single sheet metal processing, and then assist with other cutting way to carry out the cutting process.
First of all, the traditional laser cutting machine,as the mainstream in sheet metal processing industry, uses CO2 laser, which can stably cut carbon steel within 20mm, stainless steel within 10mm, and aluminum alloy below 8mm. Secondly, the fiber laser has obvious advantages when cutting thin plates within 4mm.Quality is poor by the effect of the solid laser wavelength when cutting thick plates. Laser cutting machines in sheet metal processing are not omnipotent. The wavelength of CO2 lasers is 10.6um. The wavelength of solid-state lasers such as YAG or fiber lasers is 1.06um. The former is easy to be absorbed by non-metals. It can cut wood, acrylic, PP and plexiglass with high quality. The latter is not easily absorbed by non-metals, so it is impossible to cut non-metallic materials. Above two cannot be used to cut high-reflection materials such as copper, silver, and pure aluminum.
With the rapid development of laser technology and the increasing use of consumer technology in sheet metal processing, laser cutting as a fine cutting equipment is quietly replacing traditional punching and shearing equipment.
There are many factors to be considered in the selection of laser cutting machine in sheet metal processing industry. In addition to thinking about the maximum size, material, maximum thickness of the required cutting and the size of the original material, more needs are considered in the future direction, for example, The maximum workpiece size to be processed after the technical modification, and the material information provided by the steel market, which is the most suitable for workpiece size, the loading and unloading time, and so on. The laser cutting machine is a modern equipment with high input and high output in sheet metal processing industry. Saving one minute per time may mean earning more than ten yuan.And the fierce market competition must try to prevent homogenization competition.