Characteristics of laser welding machines
Publishing time.
Nov 02,2020
With the development of science and technology, and the improvement of people's living standards, laser welding machines have emerged in recent years. So what is a laser welding machine? What are the characteristics and advantages of laser welding machines?
With the development of science and technology and the improvement of people's living standards, laser welding machines have emerged in recent years. So what is a laser welding machine? What are the characteristics and advantages of laser welding machines?
First, what is a laser? The first laser beam in the world was produced in1960year, when ruby particles were excited by a flash lamp. Due to the thermal capacity of the crystal, it could only produce very short low-frequency pulse beams. Although the instantaneous pulse peak energy can reach up to106watts, it still represents low energy output.
The technology of laser welding machines utilizes polarizers to reflect laser beams, which can be concentrated in a focusing device to generate a huge energy beam. If the focus is close to the workpiece, the workpiece will melt and evaporate within a few milliseconds. This effect can be used in the welding process.
High powerCO2lasers andYAGlasers have opened up a new field for laser welding. The key to laser welding machine equipment is the high-power laser. The wavelength of the laser is1.06 micrometers, and its main advantage is that the beam can be transmitted through optical fibers, eliminating the need for complex beam transmission systems. It is suitable for flexible manufacturing systems or remote processing, and is often used for welding high-precision workpieces. The output power of the laser is3～4kw, which is commonly used in the automotive industry. Another type is the gas laser welding machine, also known as the carbon dioxide laser.
Using molecular gas as the working medium, a10.6 micrometersuniform size infrared laser welding machine has been developed, which can work continuously and output high power. The standard laser power is between2-5kilowatts. The main advantages of laser welding machines are as follows: fast speed, small deformation. Welding can be done at room temperature or under special conditions.
The welding equipment is simple. For example, the laser beam can pass through certain glass or gas in a vacuum, but not through air. Three. It can be used for welding refractory materials such as titanium, quartz, and dissimilar materials. After focusing, the power density is higher. When welding high-power devices, the aspect ratio can reach'5:1', and can reach up to'10:1'. Micro-welding is possible.
After focusing, the laser beam can achieve a very small light spot and can be precisely positioned. It is suitable for large-scale and small-scale welding production. It can weld hard-to-reach parts and has great flexibility. It can be used for non-contact remote welding. Especially in recent years, with the application of optical fiber transmission technology inYAGlaser processing technology, the technology of laser welding machines has been more widely promoted and applied.
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