Application of laser cutting machine in manufacturing industry
The slit formed by the laser cutting machine is narrow, which can improve the dimensional accuracy of the parts and the utilization rate of materials; the slit quality is good, there is no slag, the edges are vertical, and the surface is smooth. In those areas where high precision and high efficiency are required to cut thin plates, laser cutting machines are still the equipment of choice. In addition, laser cutting has many advantages such as high energy density, small cutting heat-affected zone, and can process materials and parts that cannot be processed by conventional methods. However, the laser cutting machine is expensive, and the equipment investment cost is about 2~3 times that of fine plasma; when using laser to cut steel plates with a thickness of more than 6-8 mm, the processing cost will be greater than that of fine plasma cutting, plus the daily maintenance workload is large. Therefore, the operating cost of laser cutting is relatively high, and these unfavorable factors hinder its application in my country's shipbuilding industry. Laser cutting machines will appear first in the shipbuilding industry in my country. Lasers have been used for cutting for nearly 30 years. During this period, in order to meet the growth of market demand, the mode and power of laser generators have been continuously improved and improved. The laser cutting technology of sheet metal is getting better day by day. Many shipbuilders in the United States, Europe and Japan have long used high-power CO2 laser cutting machine technology for shipbuilding and have achieved success. Second, the term “precision shipbuilding” has been familiar in the past few years. To truly achieve this, just look at cutting. At present, the equipment of domestic shipyards obviously does not meet the technical requirements. People's attention is naturally directed to cutting accuracy. Higher laser cutting will undoubtedly become the driving force for laser cutting machines to enter China's shipbuilding industry. Third, the rapid development of optoelectronic technology has greatly reduced the operating cost of laser cutting (yuan/kW). In addition, the fierce market competition of various manufacturers for the first opportunity will inevitably cause the price of laser cutting machines to fall. In terms of comprehensive economic benefits, it competes with plasma cutting machines and is gradually recognized and accepted by my country's shipbuilding industry. According to practice, carbon steel laser cutting machines usually use auxiliary oxygen to speed up the cutting speed and obtain high-quality cutting results, but this is generally only suitable for cutting carbon steel plates with a thickness less than 20mm. In addition, more than a year ago, the Render Shipbuilding Co., Ltd. in Alabama, USA'. A new cutting process combining laser and (pressurized) oxygen is used to cut 50mm thick steel plates, and the power of the CO2 laser system used for cutting is less than 2kW. This cutting method has the potential to cut 100mm thick steel plates . The working principle of this process technology called LASOXu0026rdquo; is: the laser beam directly passes through the center hole of the cutting nozzle at the front of the cutting torch and is projected on the steel plate, so that the steel plate is quickly heated to the ignition temperature, and the high-speed oxygen sprayed from the cutting nozzle The flow is just sprayed in the laser beam's focusing range to oxidize and burn this part of the steel plate at high temperature, and blow the molten metal and its oxide away from the steel plate to form a slit. The cutting torch moves relative to the steel plate with the cutting bed to complete the part. Cutting. Different from oxygen u0026 mdash; gas cutting, there is no gas involved in the preheating reaction, but the laser will heat the temperature of the projection area to over 900°C within 1 to 2 s. In fact, in order to achieve the expected oxidation reaction efficiency, only the power of the laser beam is required to generate and maintain the ignition temperature, and it is not necessary to use those high-power laser sources that can generate enough temperature to melt the steel plate. Wuhan Gaoneng Laser Equipment Manufacturing Co., Ltd. is a high-tech enterprise integrating Ru0026D, production and sales of professional laser complete sets of equipment. Not only successfully developed laser equipment with advanced technology, but also used self-support import and export rights to promote products to more than 40 global markets including Hong Kong, South Korea, Vietnam, Malaysia, Thailand, Australia, the United States, Japan, Germany, the Netherlands, Jordan, etc. nation.