The diamond segment for circular saw blade is made of synthetic diamond and various metal powders through cold pressing, hot pressing sintering, vacuum brazing and other processes. Among them, cold pressing is also called cold pressing sintering,By cold pressing, in the middle stove furnace, the base blank blade and the segment are cold pressed together to form a small diamond saw blade. Most of these saw blades have a diameter range of 105-230mm, Mainly used for cutting hard materials such as brick wall, steel concrete, ceramic tile, asphalt, stone, etc. It can be cut dry and watered. The hydraulic sintered segment is mainly used for stone cutting saw blades, Some are also used for dry cutting of asphalt and concrete through laser welding. The saw blades used for stone cutting have the most abundant diameters. Saw blades from 250-4500mm are available, of which 250-600mm saw blades are mainly used for edge cutting. And 450-850mm is mainly used for stone splitting, The 900-3500mm circular saw blade is used for block cutting, The 2200-4500mm saw blade can also be used for mining stone. As for vacuum brazing, the diamond is fixed on the saw blade base by brazing. The main diameter is 105-400mm. The main feature is fast cutting, which is used in fire fighting scenes and markets that require high cutting speeds, such as Europe, the United States and other regions.
The main components of the diamond segment are: Synthetic diamond powder (about 10%), Iron powder (about 60%-70%), Copper powder (about 8%-15%), Tin powder (about 7%-10%), Other metal powder (about 3%-5%), And some non-metal bonding agents (paraffin, etc.), These components will vary with different cutting materials, especially for segments that require life and sharpness, which will vary greatly.
The production process of diamond segment is: After weighing the diamond and various metal powders in proportion, mix these raw material powders and stir them thoroughly. Compressed into small discs of various specifications by an automatic cold press, The small discs are hot-pressed and sintered after re-installing the mold, If there is an interlayer, you need to fire a non-working layer or add iron sheets, The sintering process is manifested as bonding between powder particles, The volume of the segment shrinks, the density increases, and the strength increases, As a result, the aggregate of powder particles (cold pressed blank) becomes the agglomerate of crystal grains (segment), so that the segment can obtain the required physical and mechanical properties-strength, hardness, wear resistance and holding power to diamond ect. After hot pressing and sintering, it is sandblasted and the welding surface is arc ground. In the early stage of cutting, the diamond of segment needs to be opening.Mainly use grinding wheel opening machine or belt opening machine for diamond opening, After the blade is opened, the diamond powder in the segment is exposed on the surface of the metal bond, which has a certain grinding performance.
The diamond segment is finally fixed on the saw blade by welding, It can be used to cut hard materials such as stone, concrete, ceramic tiles, asphalt, brick walls, floors, etc. After the segment is consumed, a new segment can be welded, and the blank blade can be reused many times until the blank blade is deformed, cracked, bent and other quality problems seriously affect the cutting.
There are many types of diamond segments for circular saw blades. However, choosing the right segment can increase the service life and cutting efficiency, and greatly shorten the processing cycle. Linxing Diamond Tools Co., Ltd. specializes in the design, manufacture and production of diamond cutter heads. Customers are welcome to come and buy.