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The diamond saw blades we say here are those that have diamond segments as their cutting edges. This kind of blade is commonly-sighted and is usually used in the construction industry to cut stone, concrete, asphalt, bricks, ceramics and other building materials.
If you fail to select a suitable diamond saw blade for your application, you may not get your ideal work efficiency or enough yield of the blade, or may spend unnecessary expenses. Here, we give some aspects you can consider when you are selecting your diamond blades . After you choose your answers to these questions, our suggestions can be seen.
If Yes :
Advises : You can consider using wholly sintered diamond saw blades , for normally they are much cheaper than welded ones.
Explanations : Wholly sintered diamond saw blades are normally not bigger than 400 mm. When a blade of this kind is made, the blank of the whole blade including the steel core is put into the sintering machines and is sintered, so the steel core cannot be quenched, therefore the steel core's hardness and toughness are not very high, and it may deform in high-load and high-intensity cutting processes.
If No :
Advises : You can use welded diamond saw blades , including silver welded ones and laser welded ones.
Explanations : The steel core of a welded diamond saw blades is treated separately from the diamond segments. So the blade can be made to be very big (up to several meters), and the steel core can be quenched and processed with other heat treatments, so this kind of blade can be used in high-load and high-intensity cutting processes without deformation, and high cutting efficiency can be gained.
Extra Tips :
The steel core of turbo wave diamond saw blades is made to have waves, which can enhance the strength of the steel core. This kind wholly sintered diamond saw blade can be used in some high-load and high-intensity cutting processes for high cutting efficiency.
If Yes :
Advises : In wholly sintered blades, there are blades only for wet cutting, and normally they are continuous rim diamond blades ; in welded blades, silver brazed ones are only for wet cutting.
Explanations : Wet cutting (cutting with water) normally is good for all diamond saw blades and make them last longer. Some blades can only be used in wet cutting, otherwise the blades may be damaged or security issues may happen. For example, if silver brazed diamond blades are used in dry cutting, the high temperature generated in the dry cutting process can cause the silver solder to be melted, and the diamond segments may fall off the blade and fly out and may hurt the operator.
If No :
Advises : In wholly sintered diamond saw blades, normally you can select all other blades except the continuous rim diamond blades ; in welded diamond blades, you can select laser welded ones to saw many types of stone. However, when the material to be cut is very hard or abrasive, e.g., reinforced concrete, you should still perform wet cutting even if you are using a laser welded diamond blade.
Explanations : In dry cutting there is no the cooling water, so high temperature will be generated in the cutting process. The diamond saw blades only for wet cutting may not withstand this high temperature and may be damaged. While laser welded diamond blades can hold their diamond segments firmly even in high temperature, so they can be used to saw many types of stone dryly. However, if very hard or abrasive materials are cut without water, the diamond segment itself may break or the steel core below the segment may wear and break, and then the segment may fly out and may hurt the operator or people nearby.
Extra Tips :
Normally, diamond saw blades that are for dry cutting can also be used in wet cutting, but it is better that their bond materials can be specially designed if they are OFTEN used for wet cutting or dry cutting. So always tell your supplier whether the blades are only for wet cutting, and if not, whether they are often used in wet cuttings or dry cuttings. Concrete saw blades are usually for wet cutting even if they are laser welded.
If Hard :
Advises : Your diamond saw blades' bond should be soft. The diamonds' size should be smaller, toughness should be high, and concentration can be a little bit lower.
Explanations : When cutting hard materials, the diamonds wear faster. Soft bond holds the diamonds short, so new diamonds can be more easily exposed and then participate in the cutting. Smaller diamonds can more easily cut into hard materials. Tough diamonds can last longer. Lower diamond concentration can improve the blade's sharpness.
If Soft :
Advises : Your diamond saw blades' bond should be hard. The diamonds' size can be big, toughness can be medium, and concentration can be a little bit higher.
Explanations : When cutting soft materials, the diamonds can last longer. Hard bond can hold the diamonds longer, and then the lifespan of the blade can be longer. Big diamonds can cut the soft materials faster. Medium- toughness diamonds can be used to cut soft materials, and certainly tough diamonds can do better, but they are more expensive. Higher diamond concentration can extend the blade's lifespan.
Extra Tips :
You can just tell your supplier what exact materials you want to cut and their hardness, your supplier should know what bond and diamonds used on the diamond saw blades can fit your application.
If Big :
Advises : Your diamond saw blades' diamond concentration should be higher, or their bond should be harder.
Explanations : When the diamond saw blade is used on a big-powered saw machine, the diamonds on the saw blade will receive bigger impact. Higher diamond concentration will decrease the impact on each single diamond in working, and harder bond can hold the diamonds more firmly.
If Small :
Advises : Your diamond saw blades' diamond concentration should be lower, or their bond should be softer.
Explanations : When the diamond saw blade is used on a small-powered saw machine, the diamonds on the saw blade will receive smaller impact. Lower diamond concentration or softer bond will cause the diamond saw blade to be sharper, otherwise your saw machine may not drive the diamond saw blade to reach the required cutting speed or even perform the cutting task.
If Cutting Efficiency :
Advises : Your diamond saw blades' diamond size can be bigger, or/and diamond concentration can be lower.
If Lifespan :
Advises : Your diamond saw blades' diamond size can be smaller, or/and diamond concentration can be higher.
Extra Tips :
The diamond saw blades' basic cutting efficiency should be first guaranteed, and then you can consider whether you need better cutting efficiency or longer lifespan.
The bond's hardness also greatly influences the blade's cutting efficiency and lifespan. As this has been explained in previous questions, here we just say the features of the diamonds.
The diamond concentration should not be too high or too low, and normally it is between 25% and 75%.
Certainly, higher diamond segments can last longer, and this will cost more. The diamond segments should not be too high, because higher segments receive more impact during the cutting process, and if the blade has no enough holding strength to the segments, the segments may fall off the blade and fly out and may cause security issues.
If Yes :
Advises : Some slits or holes on the steel core of a diamond saw blade can reduce the noise generated in the cutting process. Damping materials can also be filled into the slits to further lower the noise.
The steel core can also be made to be a sandwich type, which has two layers of steel cores outside and one layer of damping material in the middle. This design can reduce the noise significantly, and this kind of blade can be called silent diamond saw blade .
If No :
Advises : You can just use the common diamond saw blades without special treatments or designs.
There are many factors which influence a diamond saw blade's features and quality. To select a blade that fit your application, you can consider our above questions and advises and give your supplier enough information about your cutting. At the beginning you can buy just a few samples to test if the blade can actually meet your requirements.
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