But I can still solve your second question. Let's take a look at the matters needing attention when purchasing a BOT laser welding machine!
1. Pulse waveform of laser welding machine. Laser pulse waveform is an important problem in pulse laser welding, which is used for pulse laser welding processing. When high-intensity laser is incident on the material surface, the metal surface will reflect 60%-98% of the laser energy, and the reflectivity will change with the surface temperature. Therefore, different metals have different laser reflectivity and laser utilization rate. In order to carry out effective welding, it is necessary to input lasers with different waveforms, so that the metal structure at the weld can be crystallized in the best way, forming a structure consistent with the base metal and forming a high-quality weld.
2. The energy of laser pulse in laser welding machine refers to the maximum output energy of a single laser pulse in J (Joule). This is a main parameter of the laser, which determines the maximum energy that the laser can produce. According to the purpose of mold repair, the laser energy below 70J can meet the needs of any occasion, and no matter how large the energy is, it will be wasted or not used at all, and it will bring about the continuous increase of the volume of laser power supply and radiator and reduce the power supply efficiency.
3. The frequency of laser pulse in welding equipment, this parameter is the ability to reflect how many pulses can be generated by laser in one second, and the unit is (Hz). It should be noted that welding metal uses laser energy. Under the condition of constant laser power, the higher the frequency, the smaller the energy output by each laser. Therefore, we need to consider the processing speed to determine the laser output frequency and ensure that the laser energy is enough to melt the metal.
Answer finished, the answer is for reference only, thank you!