Metal welding is one of the important applications of laser welding, which heats two metal sheets to their melting point through laser welding until they are welded together. These two pieces of metal can be of the same material or of different materials. Common metal sheet materials include aluminum (grades 1050H14, 5251H22, 6082T6, and 5083’0′), stainless Steel (grade 304, 306), galvanized Steel (grade DX51DZ+275MAC), and mild Steel (grade CR4).
Metal welding is commonly used in batteries, aircraft, automobiles, trucks, electrical appliances, ships, and other industrial equipment.
This article describes how to use to quickly weld metal sheets according to a pre-defined path by a galvanometer laser welding machine.
The galvanometer laser welding system mainly includes a laser energy control system and a laser trajectory control system. The former is also known as a laser power supply, which specifically regulates laser energy, changes the size of the light spot, and performs other functions. The latter uses a galvanometer system to directly control the laser spot. The galvanometer laser welding machine uses an EZCAD control board to complete laser motion, and uses a 300W YAG laser power supply to output laser energy. The welding speed is 10 times faster than that of conventional welding systems.
Step 1: Pre-defined Metal Welding Path
1. Start the EZCAD software.
2. Draw a circle: click the circular button and drag in the workspace to form a circle.
3. Set circle radius: the picture shows drawing a circle with a diameter of 2.3 cm, press [Enter] to confirm.
4. Draw 2 rows and 10 columns of circles. On each row, the circular spacing is 2.3 cm; The spacing between two rows of circles is 3. Select [Modify] [Array] to set relevant parameters. Click confirm.
5. Set welding speed
Set the parameter [CURRENT] and [PULSE WIDTH], which determine the power of the laser. Set the [FREQUENCY] to determine how many laser spots in a circular path.
Step 3: Find The Laser Focus of the Laser Welder
Switch the handheld device and move the laser head up and down to ensure that the laser focus is on the working surface. The distance between the laser head and the marking surface is determined by the LENS installed on the laser marking machine. For example, 268mm.
If you don’t know the parameters of the galvanometer, you can move the laser head up and down to watch the energe, like in the belong video. It has the strongest energe when the laser is on the surface.
Step 4: Metal Welding
1. Click the red light [F1] button to preview the welding range, press ESC to exit the preview (can be omitted)
2. Click the [F2] button to emit light for welding, and press ESC to stop emitting light.
