A diamond blade is a saw blade that has diamonds that are fitted on the edges to cut out hard materials or abrasive materials. There are many types of diamond blades, and they have many uses, including cutting stones, concrete, asphalt, bricks, coal balls, glass, and ceramics in the construction industry; cutting semiconductor materials in the IT industry; and cutting gems, including diamonds, in the gem industry.
Video Diamond blade
Jenis
The diamond blades are available in various forms:
- A circular diamond saw blade is the most widely used type of diamond blade.
- The diamond saw diamond saw is a long steel plate with parts of the diamond welded onto it. Typically, tens or hundreds of diamond saws see blades used together to see raw stone blocks.
- A diamond saw blade is a flexible closed steel band with a fixed diamond (often with electroplating) on ​​one side of the band.
The diamond blades are designed for special uses including marble, granite, concrete, asphalt, stone, and jewel cutting knife. General purpose knives are also available.
Maps Diamond blade
Creation method
Electroplating
Blades use diamonds embedded in metal layers, usually from nickel adapted to a steel blade blade, can be made very thin - a knife can be tens of micrometers thick, for use in proper cuttings.
Vacuum breaker
Vacuum diamond brazing grinding is produced by welding synthetic diamond particles to the outer edge of a circular saw blade in a vacuum brazing furnace. All the diamond particles are on the outside of the blade, without a diamond-metal alloy. Depending on the manufacturer's recommended blade application, vacuum brazing blades will cut a variety of materials including concrete, masonry, steel, various iron, plastics, tiles, wood and glass.
The finer smooth diamond slices will reduce the chipping of the tile and burring of the steel and provide a finer finish. Larger diamond grit will provide higher cutting speed, but will be more likely to cause chipping, burring, or cracking. The fire department requires the blades to be made with very large sand grains, to tear the material quickly. Medium grit size is used by the production industry.
Sintering
The bonded bonded diamond metal bar is the most common type of knife. This blade is made up of steel cores (the base is a steel plate, unlike the wire used in diamond wire saws) and diamond diamond saws, which are made by combining synthetic diamond crystals with a metal powder and then sintering them. Diamond segments are also known as "cut teeth" of a knife.
The steel core can vary in design. Some cores have a space (known as a gullet) between segments to provide cooling and removal of the mud, while others have a single rim for finer cuts. The type of core that can be used depends on the type of material that the diamond blade is designed to cut.
In general, there are three types of diamond plated metal blades in accordance with their manufacturer's method: a fully sintered diamond blade, a silver brazing diamond blade and a laser welding diamond blade.
A sintered diamond blade is completely made by laying the steel core, along with the diamond and metal bonding material, into the mold and then incorporating it in the sintering furnace equipment. As a result, the diameter of a fully sintered diamond blade is not very large, usually no more than 400 millimeters (16 inches). Therefore participating in the sintering process, the steel core can not be extinguished, so the hardness and core strength is not very high. This means that this type of diamond blade can be deformed in high-load and high-intensity cutting processes and can exhibit low cutting efficiency.
Silver brazing and laser welded diamond blades do not have this disadvantage because their diamond segments and steel cores are treated separately. Steel core can be extinguished and processed by other heat treatment, so its hardness and strength can be high, meaning that the blades can be used in high-load and high-intensity cutting processes with high cutting efficiency and smaller deformation rates.
The diamond-colored diamond blades diamond blades are attached to the steel core using silver solder. This knife can only be used in wet cuttings. If they are used in dried cuttings, silver solder can melt and segments may break from the steel core and become a serious safety hazard. The laser melts and combines metal from the diamond segments and the steel core creates a stronger weld, which can hold the segment even in high temperatures, meaning that a laser welding diamond blade can be used to cut many rock types without water cooling. However, when cutting very hard or abrasive materials, for example, concrete containing rebar reinforcement, laser welded diamond blades should also be used with sufficient water. Otherwise, it is possible for the diamond segment itself to destroy or steel cores beneath the segment to wear and break, creating serious security hazards.
Application of diamond plated metal bonded blades
The diamond blades grind, instead of cutting, through the material. Blades usually have rectangular (segment) teeth containing diamond crystals embedded in all segments to be milled through very hard material.
Bond is a term used for the softness or hardness of metal powders used to form segments. The metal powder holds the diamond in place. The bond controls the rate at which the diamond segments are damaged allowing the new diamond to be exposed on the surface to continue to grind with a "sharp" tip. An important step in choosing a knife is to match the bond with the specific material to be cut. Additional factors to consider are the type and strength of the equipment to be used and the availability of water. Harder materials require a softer bonding segment to allow for continuous exposure to diamonds. Softer materials such as freshly poured asphalt or concrete may use harder segments to withstand increasing wear of softer, abrasive materials. In addition, diamond grit (size), toughness, and concentration must also match the properties of the material to be sawed. For example, when hard materials are cut, diamonds should be smaller.
There are other factors to consider when choosing a diamond blade for a particular application. These include knife-making methods, the availability of water in the cutting process, the saw's horsepower, and the acceptable noise levels created by the saw. For example, if the horsepower of a large sawing machine, diamond concentrations of diamond blades should be higher, or the bond should be harder. Higher diamond concentrations will reduce the impact on every single diamond in work, while stronger bonds will hold the diamond stronger.
Cutting with or without water
Many blades are designed to operate wet or dry. However, tooling and diamond blades work better when wet, and dry cuts should be limited to situations where water can not or should not be used. Water will prevent the blade from overheating, greatly reducing the amount of harmful dust created by cutting, removing the slurry from the wound, and extending the life of the blade, since the diamond is unable to resist the forces involved at the high temperatures involved in the dry. cutting ceramics and abrasive materials, and will be subject to rapid wear and tear and possible failure.
When water can not be used (in, for example, electric saws), action must be taken to ensure that the operator does not inhale dust produced by the process, which can lead to silicosis, a serious lung disease. When the cut is dry, the blade should be allowed to cool periodically. The cooling can be improved by allowing the blades to rotate freely from cutting. OSHA has strict regulations concerning silica dust and requires N95-approved NIOSH respirators at work sites where there is a significant amount of harmful silica dust.
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Source of the article : Wikipedia
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