A Brief Discussion on the Parameters of Laser Welding Machines
Parameters are a familiar concept to everyone. Every product has its specifications, and laser welding machines are no exception. Parameters primarily refer to characteristic values that must be specified when a product (as distinct from a commodity) fulfills a specific human need. These include length, width, height, density, mass, physical properties, specifications, structure, and more. Regarding the parameters of laser welding machines, let's explore some specifications of the laser welding machines produced by our company, Top Optics Laser:
1. Power Density
Power density is one of the most critical parameters in laser processing. Higher power densities can heat the surface layer to its boiling point within microseconds, causing significant vaporization. Consequently, high power density is advantageous for material removal processes such as drilling, cutting, and engraving. At lower power densities, the surface takes several milliseconds to reach boiling point. Before surface vaporization occurs, the underlying layer reaches its melting point, facilitating the formation of a sound fusion weld. Laser welding machine manufacturers note: In conduction-type laser welding, power densities typically range from 10⁴ to 10⁶ W/cm².
2. Laser Pulse Frequency
Laser pulse frequency, as one of the parameters in laser welding machines, primarily indicates the laser's capability to generate pulses per second, measured in Hz (Hertz). Taking metal welding as an example, welding metals utilizes the laser's energy. At constant laser power, higher frequencies result in lower energy per pulse. Laser welding machine manufacturers note: To ensure sufficient laser energy for metal melting while considering processing speed, the laser output frequency must be determined accordingly.
3. Laser Pulse Width
Pulse width is a critical parameter for pulsed laser welding machines. It distinguishes between material removal and melting processes while also determining the cost and size of the processing equipment.
4. Laser Pulse Waveform
Laser pulse waveform is a significant consideration in laser welding machines, particularly crucial for thin-sheet welding. When a high-intensity laser beam strikes the material surface, 60–98% of the laser energy is reflected and lost. This reflectivity varies with surface temperature, exhibiting significant fluctuations during a single laser pulse duration.
For more information on laser marking machines, laser welding machines, and laser cutting machines, please visit our official website at Top Optics Laser: http://www.tollaser.com