High Frequency Welding Technology of Large Saw Blade Diamond segment

At present, most of the tower-type combination saws, multi-blade combination saws, gantry cutting and other machinery used for factory processing widely use large diamond saw blades to cut stone blocks. Due to the welding process, the cutting quality and cutting efficiency of the saw blade have great variability. This article introduces the high-frequency welding process of the diamond segment, so that everyone can better understand the welding of the diamond segment.

The high-frequency welding of the diamond segment adopts a high-frequency welding machine. The working principle of this machine is that the skin effect and the adjacent effect are generated by the high-frequency current. These two effects are the basis for the realization of metal high-frequency welding. High-frequency welding uses the skin effect to concentrate the energy of high-frequency current on the surface of the segment and the solder, and quickly melts the solder; and uses the proximity effect to control the position and range of the high-frequency current flow path. This way will not affect the stability of the underlying base material. The speed of the current is very fast, it can heat and melt the solder tab or solder in a very short time, and realize the butt joint of the segment and the base body by extrusion.



The welding of the diamond segment and the base of the saw blade is completed by the combination of electrical-mechanical system. First of all, the high-frequency welding machine used for welding is composed of two parts: a high-frequency generator and a feeding device. These two components are for the purpose of generate high-frequency current and control it well, including controlling the heating temperature (usually welding temperature) and controlling the heating part. In the high-frequency welding process, the main heating part is the bottom of the segment and the solder part, not base part of the saw blade, so the feeding device is especially important, In mechanical system, the mechanical extrusion process is completed by the forming machine, and the forming machine is composed of an extrusion roller frame. During the extrusion process, the oxide layer and impurities of the solder layer are removed, so that the segment and the substrate are completely fused.

In the specific operation process, the following aspects are particularly important:

1: During the process of replacing the segment, that is, before the old saw blade is replaced with a new segment, it is especially critical to remove the excess segment and solder, and use a high-temperature-resistant scraper or scraper as much as possible to remove the solder or excess segment cleaning up. If you are worried about cleaning up, it will be better to appropriately increase the upper limit temperature of the high-frequency machine.



2: It is better to weld at intervals of one saw blade, which will try to avoid greater losses due to some small bending or deformation of the saw blade. Of course, if the interval welding can be added after welding the general segment, replace the positive direction of the saw blade. On the other hand, while welding, there is less chance of the segment shifting or deviating.

3: In the process of processing, it is very important to weld the diamond segment to the mold. Because the high-frequency heating tube adopts a water cooling device, the temperature is not high and can be touched. During the process of placing the segment, constantly adjust the segment In the middle of the segment, let the indenter of the high-frequency welding machine press the top of the segment. When the indenter has a significant downward movement, the segment is welded.