Difference between laser welding machine and traditional welding machine of diamond saw blade

The significant characteristics of laser welding diamond saw blades are: large melting depth, high speed, and large fusion area per unit time, making it an efficient welding method; The depth to width ratio of the weld seam is large, the bonding strength is high, the heat affected zone is small, and the deformation of the welded part is small. It can withstand high temperatures and large impacts during use; Generally not filled with metal; If inert gas is used for sufficient protection, the weld seam will not be contaminated by the atmosphere; The welding system has a high degree of flexibility and is easy to achieve automated operations.

When using laser as a welding machine to weld diamond saw blades, the welding strength between the segments and the substrate is relatively high. Even saw blades working under dry cutting or extremely harsh conditions often do not break at the weld seam and are highly likely to be broken by the segments themselves. Therefore, it is particularly suitable for use in situations where safety, reliability, and the risk of preventing segment detachment are increasingly high. Laser welding of diamond saw blades is a revolution in the saw blade manufacturing industry.

Brazing is a welding method that uses silver solder pads to bond the substrate and segments together. It belongs to a physical combination. This method not only consumes expensive silver solder pads, but also has disadvantages such as slow welding speed and large welding deformation. More importantly, the welding strength is low. As the temperature of the saw blade increases during operation, the welding area may become loose, and even segments may fall off, causing safety accidents. Laser welding, on the other hand, does not require silver solder pads and is a metallurgical combination formed by directly melting the substrate and segment through the energy of the laser. Compared with traditional welding, it has the following advantages:

After laser focusing, the power density is high. When welding high-power devices, the aspect ratio can reach 5:1, with a maximum of 10:1;

2. Laser welding has high strength and does not lose teeth. Laser welding saw blades have an average breaking torque of approximately 13-25N. m depending on the size of the substrate;

3. Laser welding beam does not deviate, has high accuracy, minimal thermal impact, and does not deform;

4. Laser welding has fast speed and high efficiency. The speed of laser welding saw blades is about 2 minutes per blade (with a diameter of 300mm and 21 blade heads), and it is equipped with advanced optical systems. Each laser is equipped with multiple workbenches for cyclic operation, greatly improving work efficiency.