Discussion on the parameters affecting the welding quality of laser welding machine?

The parameters that affect the welding quality of laser welding machine equipment include: laser pulse energy, laser spot diameter, laser pulse frequency, laser pulse width, laser pulse waveform, relative light absorption rate of material to be welded, welding speed, shielding gas, etc. Let's discuss it together as follows:

Laser spot focusing diameter of laser welding machine: This is a very important parameter reflecting the design performance of laser, unit is (mm), which determines the laser power density and processing range. If the optical design of the laser is reasonable and advanced, the laser energy is concentrated and the focus is accurate, the laser spot diameter can be controlled in the range of 0.2mm-2mm, and whether the laser focus diameter can be controlled in the range of 0.2mm is a strict test for the laser generator.

Frequency of laser pulse of laser welding machine: This is the ability to reflect how many pulses the laser can produce in one second, and the unit is (Hz). The first thing to note is that welding metal uses the energy of laser, and in the case of constant laser power, the higher the frequency, the smaller the output energy of each laser. Therefore, we need to ensure that the laser energy is enough to melt the metal, and consider the processing speed, in order to determine the output frequency of laser. In the case of laser repairing abrasives, 15Hz can meet the needs of welding, too high frequency will cause too low laser pulse energy, resulting in welding failure.

Laser welding machine laser pulse energy: refers to a single laser pulse energy to large output energy, unit is J (joule). This is one of the main parameters 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. No matter how large the energy is, it will be wasted or not used at all. Moreover, the volume of laser power supply and radiator will continue to increase, reducing the efficiency of the power supply.