Whether you need to precision cut thin gauge foils or cut through thick sheet metal, fiber lasers help get the job done easily. Unlike traditional laser cutting, fiber helps you tackle some of your biggest challenges, such as processing reflective metals or creating clean edges on small parts. Laser cutting machine is a kind of equipment that can partially replace traditional metal cutting method. It has the characteristics of fast cutting speed and high cutting quality.
Due to the transmission characteristics of the laser, the laser cutting machine is generally equipped with multiple numerical control worktables, and the entire cutting process can realize numerical control. The heavy metal processing industry which means a lot to the industrial manufacturing system, many metal materials, no matter how hard it is, can be cut without deformation. In the cutting process, the auxiliary gas suitable for the cut material is added. Compared with other thermal cutting methods, laser cutting is characterized by high cutting speed and high quality. That is to say, in the case where the processing power, the material, and the thickness of the sheet are the same, the larger the gas pressure, the more smoke dust that can be blown off at the unit speed. The auxiliary gas can prevent slag from returning during the cutting process, thereby protecting the internal lens of the laser head.
When cutting flammable materials such as cotton, paper, the inert gas is been used. As long as the balanced heating gradient is maintained, the laser beam can guide the cracks in any desired direction. The laser beam heats the small area of the brittle material, causing the large thermal gradient and serious mechanical deformation in the region, causing the material to crack. It is estimated that when the steel is cut, the amount of heat released by the oxidation is about 60% of the total energy required for cutting.
The laser beam is focused to form a very small operating point with strong energy, and it is applied to cutting with many characteristics. The material does not need to be clamped and fixed during laser cutting, which saves the fixture and saves the auxiliary time of loading and unloading. ② The cutting surface is smooth and beautiful, the surface roughness is only a few tens of micrometers, and even laser cutting can be used as the last process. The cutting speed of the controlled fracturing cutting is fast and does not require too much power, otherwise, it will cause the surface of the workpiece to melt and break the edge of the cutting. obviously, there are two heat sources in the process of oxidation melting, namely, laser irradiation and the heat energy produced by the chemical reaction of oxygen and metals.
Laser welding is usually done without filler metals so parts need to have good fit with a gap that’s less than 15% of the thickness of the thinnest component, which limits its scope of use. The use of wire-filled laser welding can greatly reduce the limitations for welding gap. For example, for an aluminum alloy plate with a thickness of 2mm, if no welding wire is used, the sheet gap must be zero to obtain a good weld shape. If a φ1.6mm welding wire is used as a supplementary metal, even if the gap is increased to 1.0mm, the weld can be ensured.
Just missed a little section about piercing but still this is the best there is!! In the field of automobile manufacturing, the cutting technology of space curves such as car roof windows has been widely used. Secondly, lasers can cut nonmetals, while other hot cutting methods cannot. It is convenient to combine with automation equipment, and it is easy to automate the cutting process. The auxiliary gas entering the nozzle can also cool the focus lens, prevent the dust from entering the lens seat to contaminate the lens and cause the lens to overheat.
The main applicable materials are aluminum, stainless copper, brass, electroplated steel sheet, non-metal and so on. The flow rate varies depending on the type of nozzle, but generally it is large. For example, cutting 12mm stainless steel requires 150m3/h, while cutting 3mm requires only 50m3/h. The main applicable plates are stainless steel, plated steel, brass, aluminum, aluminum alloy, etc.
For example, the laser cutter with 2KW laser power been adopted, the cutting speed of carbon steel with 8mm thickness is 1.6m/min. The cutting speed of stainless steel with 2mm thick is 3.5m/min, and the thermal influence area and the deformation are very small. When the laser power and the auxiliary gas pressure are certain, the cutting speed and the slit width maintain a nonlinear inverse relationship.
The laser generators and cutting heads are international brands, such as Precitec, Raytools cutting heads, IPG laser source, etc. We also offer economical solutions, such as using Raycus lasers and WSX laser cutting heads made in China. Enjoy both manual laser welding and auto laser welding with one machine. Because process control is more precise, the range of process parameters is wider. The additional control provides even greater capability to laser weld dissimilar materials.
The pressure and flow rate are different, which is inseparable from the size of the nozzle model and the thickness of the cutting material. Mainly used for rolling steel, rolled steel for welding structure, carbon steel for mechanical construction, high tension plate, tool plate, stainless steel, electroplated steel sheet, copper, copper alloy, etc. If oxygen purity is not high, and the processed parts have higher surface quality requirements, it is necessary to add oxygen drying and other devices to improve the purity of oxygen. Fiber Laser cutting equipment is very expensive, but it is still possible to use the device in large production because of the lower cost of subsequent processing. However, when oxygenated, a thin oxide film is formed on the cutting surface. At the same time, it has a better cutting effect for high reflective material such as aluminum alloy, copper, copper and various copper alloys.
MORN LASER fiber laser welding machines deliver more good parts faster than alternate joining techniques. Cutting, welding, marking, processing surfaces – more and more manufacturing technology experts are valuing the flexibility, versatility, and cost efficiency of the laser tool. In recent years, optical fiber laser cutting machine has been widely used to make metal laser cutting more convenient and efficient. Due to restricted by laser power and equipment volume, the laser cutter can only cut the small thickness of plate and pipe material, and with the increase of workpiece thickness, the cutting speed decreases significantly. Because the laser light spot is small, the energy density is high, the cutting speed is fast, so the laser cutting can obtain better cutting quality.
The thicker the plate thickness, the higher the pressure value of nitrogen work. When cutting stainless steel, the required purity of nitrogen is generally higher than 99.999%. Low purity nitrogen can lead to yellowing of the cutting surface and lower brightness. Nitrogen is usually used for cutting stainless steel and aluminum alloy materials. It is important to note that the oxygen contains impurities such as water, which can seriously affect the cutting quality of the plate surface.
Generally, the required pressure is 0.3-1Mpa, and the flow rate varies according to the thickness of the cutting material. For example, cutting 22mm carbon steel, the flow rate should reach 10m3/h (including the protection oxygen of the double-nozzle). While the oxygen reaction heat is used to increase the cutting efficiency, the resulting oxide film increases the beam spectral absorption factor of the reflective material. Therefore, the higher the air pressure value used, the faster the laser cutting speed can be. It can blow the cutting piece be melted and vaporized, can also blow the smoke in the process of cutting, so as to reduces the barriers to cutting the workpiece. In addition, the NC system can automatically adjust the cutting power according to the cutting speed.