Fiber lasers have proven their core competitive advantage in the cutting field. The Yb-doped fiber laser with wavelength of 1070 nm is the ideal light source for laser cutting, excellent beam quality, high anti-material reflection, and high efficiency is the advantage of fiber laser in cutting application. Laser cutting is the use of high-density 5mw green laser beam scanning the surface of the material in a very short period of time the material heated to tens of thousands to tens of thousands of degrees Celsius, the material melting or gasification, and then high-pressure gas will melt or gasification material from the slit Blow away to achieve the purpose of cutting materials. Laser cutting technology is widely used in metal and non-metallic materials processing, can greatly reduce the processing time, reduce processing costs, improve the quality of the workpiece.
Pure titanium can be a good combination of focusing laser beam transformation of thermal energy, auxiliary gas when the use of oxygen when the chemical reaction is intense, faster cutting, but easy to produce oxide layer in the trimming, careless also cause burning. For the sake of safety, the use of air as auxiliary gas is better to ensure the quality of cutting. Aircraft manufacturing industry commonly used titanium red laser pointer cutting quality is better, although the bottom of the slit will have a little sticky slag, but it is easy to clear. Aluminum cutting is melting and cutting, the auxiliary gas used is mainly used to blow away the molten product from the cutting zone, usually get a better cut surface quality. For some aluminum alloys, it is important to prevent the formation of intergranular microcracks on the surface of the slit.
High-brightness fiber laser processing of high thermal conductivity material, it is best to use a small spot to maintain the stability of the welding hole, but this process may make the process is too intense, resulting in a large number of welding splash. Experiments show that high-brightness laser with high-speed positioning of the remote scanning head, significantly reduce the welding splash, which is achieved by beam swing to ensure that the welding hole stability to achieve. By installing a protective device, to avoid damage to the equipment by the back light. Processing of copper and aluminum such high reflective metal, the backlit light is inevitable, the traditional burning laser pointer due to the natural sensitivity of the return light, may lead to processing instability and destructive automatic shutdown, or even scrapped.
Today, in the field of transport, especially in the aircraft and automotive industries, there are lightweight needs, which reduce energy consumption and CO2 emissions and other sustainable development strategies have far-reaching significance. Large-scale manufacturing markets (such as cars) are increasingly demanding fast and low-cost manufacturing processes, including carbon fiber composite molding, joining and cutting processes. The mechanical cutting of long fiber composites will cause the machine tool to be worn and must be replaced by frequent cutting tools to maintain the accuracy of the parts, increasing the processing cycle and manufacturing costs. In addition, machining usually requires water to cool the parts and remove debris and reduce dust. After cutting, in order to reduce the impact of water on the components, often have to dry the parts, extending the entire manufacturing process. Another challenge for water jet cutting is the need for complex water pipelines. Laser technology for the processing of carbon fiber composite material provides no wear, no external and anhydrous processing technology, and fast, high degree of automation, easy to solve the carbon fiber composite mechanical cutting all the shortcomings.
Most alloy structural steel and alloy tool steels can be used to achieve good cutting edge quality by high power laser pointer cutting. Even some high-strength materials, as long as the process parameters control properly, can be straight, non-stick slag trimming. However, for tungsten-containing high-speed tool steel and hot-die steel, laser cutting will have the phenomenon of erosion and sticky slag. Nickel-based alloys also known as super alloys, many varieties. Most of which can be implemented by oxidative melting cutting. With the rapid development of the laser industry, related laser technology and laser products are becoming more mature. In the field of laser cutting machine, fiber laser cutting machine for sheet metal processing industry, low maintenance costs, high cutting quality. Relative to YAG and C02 these two types of laser cutting machine, more market share.
A new generation of fiber lasers is revolutionizing kilowatt-class materials processing. This combination of high-speed scanning system performance, can be achieved before the processing speed and application speed. Anti-high anti-technology to achieve high-reflective material full power, uninterrupted welding, while ensuring continuous and stable weld quality. The combination of high-brightness 1mw laser pointer and scanning systems for the cutting and etching of carbon fiber composites enables high-speed, high-quality machining and minimal thermal impact, and has contributed to the development of advanced new materials processing technologies.