Laser cutting is a kind of high energy density controllable non-contact processing. It focuses the 30mw laser pointer beam into a spot with a minimum diameter of less than 0.1mm, so that the power density at the focal point can exceed 107W to 108W / cm ~ 2. The irradiated material is quickly heated to the vaporization temperature and evaporated to form pores. As the beam moves relatively linearly with the material, the apertures are continuously formed with slits of about 0.1 mm in width. The cutting also adds auxiliary gas to the material to be cut to accelerate the melting of the material, blown away the slag or protecting the slits from being oxidized.

Many metal materials, no matter what kind of hardness, can be used for laser deformation without cutting. Most organic and inorganic materials can be laser cut. Commonly used engineering materials, including copper, including carbon steel, stainless steel, alloy steel, aluminum and aluminum alloy, titanium and titanium alloy and most of the nickel alloy can be implemented laser cutting.Compared with the traditional plate cutting method, 50mw laser pointer cutting has obvious advantages. It is easy to cut fast, high production efficiency; cutting quality, slit narrow; material adaptability, no tool wear; whether it is simple or complex parts, you can use a laser precision forming rapid cutting; high degree of automation, Low labor intensity, no pollution; low production cost, good economic efficiency; the effective life cycle of the technology is long.

For iron and steel enterprises, the establishment of laser processing sheet metal distribution center, has a unique advantage. First, the production of sheet metal production and sales base, over the years to establish a wide range of sales channels, customer relations and sales network, the production and sales base of the plate, ; The small batch, multi-species needs of users, can directly provide the finished product after 100mw laser pointer precision processing to extend the service chain of the product, resulting in a secondary benefit; cutting waste can be quickly recycled; at the same time, reduce the intermediate transport links, Cost savings, to maximize the profits. And behind all this, laborers can provide long-term, strong technical support.

In fact, the establishment of laser processing center, in the western industrial developed countries have formed a trend. As the laser processing efficiency is high, in the past often need more than a dozen processes to complete the workpiece, with a laser cutting a process can be completed. On the one hand, many small and medium enterprises can not make full use of their own processing capacity of laser processing equipment; the other hand, 200mw laser pointer processing equipment investment and larger. In this case, small and medium enterprises to buy their own laser processing equipment will bring a certain waste. Based on this situation, the current Western industrial developed countries will be born out of more than 3,000 external commitment to the task of the Job, the United States next to the car there are more than 200 laser cutting machine.

Laser cutting has the same advantages as conventional processing methods. In the thermal cutting method, oxygen-combustible (such as acetylene) cutting and plasma cutting can not concentrate as much energy as a laser beam in a very small area, resulting in large incision width, large heat affected area and more obvious deformation of the workpiece. Oxygen-combustible cutting equipment is small, less investment, can cut up to 1m thick steel plate, is a very flexible cutting tools, mainly used to cut low carbon steel. However, due to its large heat affected area, cutting speed is low, the incision appears serious jagged and corrugated. Therefore, it is rarely used to cut the thickness of 20mm or less and require accurate size of the material. Plasma cutting is similar to high power laser pointer cutting speed, significantly higher than acetylene flame cutting. But its cutting energy is low, trimming at the top of a round head, cut from the obvious waveform. In operation, but also to prevent the arc generated by the UV radiation on the operator of the damage.

Compared with the laser cutting, plasma cutting slightly better is that it is more suitable for cutting thick steel and high reflectivity of the beam of aluminum and so on. However, the laser can cut non-metallic, while other thermal cutting methods can not. In the mechanical stamping process, the use of die-casting method to produce high-volume parts, with parts of low cost, short production cycle advantage, but this method is more difficult to adapt to the design changes, equipment dedicated, long manufacturing cycle, high cost. For small and medium-sized enterprises, the laser cutting expertise will be fully displayed. Laser cutting makes it easy to cut the cuttings of the workpieces, which is more economical than the blanks for each material around the workpiece. For the need for segmented punching large and complex parts, you need to punch with the punch, resulting in truncated many shells shell edge, resulting in a large number of corners more than material. For thin metal cutting method, the cutting speed is much slower than 20mw laser pointer cutting. Moreover, the laser as a flexible non-contact, profiling tool, you can start from any point in the material to any direction of cutting, which is on the sawing, is looking away. The use of EDM or wire cutting and other methods for the hard material of fine processing, although the incision is more smooth, but the cutting speed than laser cutting a few orders of magnitude. Water cutting can cut many nonmetallic materials, but the operating costs are higher.

Laser cutting for the steel industry in the establishment of "sheet metal distribution center", according to the use (user) needs to provide follow-up cutting products, and make computer discharge, to achieve two-dimensional, three-dimensional arbitrary cutting, to maximize the conservation of materials And supplies, to achieve a win-win situation of steel mills and customers.

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