Diamonds are the hardest natural materials on earth. They are divided into two categories, "Gem-quality diamonds" and "industrial diamonds." The diamonds used in industrial tools are industrial grade diamonds. Industrial diamonds are valued for their hardness and thermal conductivity. 80% of the mined diamonds are not suitable for use as gemstones and are called “boit”, which are used for industrial purposes. Synthetic diamonds have been used since their invention in the 1950s. Industrial grade diamonds are used for cutting, drilling, grinding and polishing. Most often, the diamonds used in these techniques do not need to be large.
Basic knowledge of diamond saw blades
The "diamond bearing edge" is the continuous or segmented edge of the blade. The "core" of the blade is a steel disk that is connected by segments. A "groove" or "Gullets" is the space between the segments that causes the water to cool the blades. The diamond segment or "edge" consists of a mixture of diamond and metal powder. Diamonds come in a variety of sizes and quality levels. In the section, the metal powder + diamond grit mixture is pressed to form a solid metal. Soft blades cut hard materials and hard blades cut soft materials. As a general rule, you need a blade with a softer matrix to cut hard, less abrasive materials such as solidified concrete, brick, tile or stone. Instead, you need a blade with a harder matrix to resist excessive wear on softer materials such as green concrete, asphalt or chunks.
Reverse relationship between blade life and cutting speed
There is an inverse relationship between cutting speed and blade life. If the saw operator makes a change, such as increasing the cutting pressure to cut the blade faster, the blade life will tend to decrease. Similarly, if the operator wants to extend the life of the blade, he can reduce the cutting pressure and slow down the cutting speed. Every job is different, and labor costs need to be added to the equation to achieve a cost-effective solution.
How does the diamond blade work?
The diamond blade is cut by mutual erosion of the material (concrete, etc.) and the segments or edges of the diamond blade. The diamond crystals are embedded in the entire edge of the blade and suspended in the metal matrix. When the crystal is crushed or dropped from the edge, the substrate wears at an optimum rate to expose the new diamond to continue effective cutting. If the substrate does not wear fast enough, the edges will glaze and the cutting will become more difficult and slow. If the substrate wears too quickly, the crystal will be lost before its validity expires. The blade may appear to cut very fast, but the life of the blade will be greatly reduced.