威廉希尔官方下载Mar 24, 2020
With the further improvement of product processing requirements in all walks of life, the application of laser welding machines in various fields is more popular. Especially in manufacturing, automobile industry, electronic industry, biomedicine, powder metallurgy, and other fields, the traditional manufacturing methods can not meet the needs, instead of laser welding technology.
The market demand for laser welding equipment is higher and higher, and there are many performance parameters that affect the quality of the laser welding machine. So, what should manufacturers pay attention to when purchasing laser welding equipment? Next, we will give you some suggestions.
1. The energy of laser pulse
The energy of laser pulse refers to the maximum output energy of a single laser pulse, in J (joule). With a certain power, the higher the energy of a single laser pulse, the lower the emission frequency. The energy of laser pulse is the main parameter of laser, which determines the maximum energy of laser.
2. Focus diameter of the laser spot
The focus diameter of the laser spot is a very important parameter reflecting the design performance of the laser. The unit is mm, which determines the power density and processing range of the laser. If the laser optical design is reasonable and advanced, the laser energy is concentrated and the focus is accurate, the laser spot diameter can be controlled within the range of 0.2mm-1.5mm, and whether the laser focus diameter can be controlled within 0.2mm is a strict test for the laser generator.
Generally, the laser equipment of small manufacturers only want to reduce the cost, the processing of laser devices is simple and the design is not rigorous, which makes it difficult to focus accurately. The laser spot diameter of the laser welding machine can not reach 0.2mm of the standard at all, which causes the actual laser irradiation area to be too large and the phenomenon of ablation of the weld appears. This phenomenon has a particularly serious impact on the processing materials, sometimes even Discard the mold. For the laser welding equipment produced by Wuhan king's laser, the minimum laser spot can reach 0.2mm and can be adjusted steplessly within the range of 0.2mm and 1.5mm, reaching the international advanced level. The medium and small power laser welding equipment of king's laser mainly includes advertising laser welding machine, optical fiber transmission laser welding machine, laser spot welder, etc.
3. Frequency of laser pulse
The frequency of the laser pulse is the ability to reflect how many pulses the laser can produce in a second, and the unit is Hz. Taking metal welding as an example, welding metal uses laser energy. When the laser power is constant, the higher the frequency is, the smaller the output energy of each laser is. Therefore, we need to consider the processing speed to determine the laser output frequency when the laser energy is enough to melt the metal. Taking the optical fiber laser welding machine produced by hongradium laser as an example, its laser pulse frequency is 1-100hz, which can be graded and adjustable. It can completely meet the precision welding processing of different materials and molds of different shapes. Its welding joints are smooth and beautiful, the welding seams are flat and free of porosity, and the strength and toughness of the welding seams are at least equal to or even more than that of the base metal.
4. Selection of feedback control method and power waveform
When choosing laser power waveform, generally speaking, under the condition of the same laser energy input, the wider the pulse width, the larger the weld spot; the higher the peak power of laser power waveform, the deeper the weld spot.