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IWD is a professional manufacturer for diamond tools. The main products are various diamond saw blades, diamond grinding wheel, diamond cup wheels, diamond segments, diamond polishing pads, diamond core drill bits, diamond segments, etc.

They are widely used for cutting and grinding granite, Stone, marble, concrete, asphalt, ceramics, Tiles, Glass and other construction materials.

Characteristics:Easy and smooth cutting,Long lifespan and stable performance,Good cutting result and high efficiency

We have strict quality management system, each piece of blades be tested before delivery, test items including material suitability, internal stress, flatness, abrasive resistance, sharpness and more reasonable formula and so on.

For more information, please contact our sales
Email: sales@iwdiamondtools.com

  Advantages Product sharpness is good, long life, high efficiency, stable quality, wide adaptability.
Purpose Quality is our life, on time is our bounden duty,mutual benefit, seeking win-win.
Detailed content
Factors affecting the diamond saw blade life which specific 2016-09-20
 

Factors affecting the efficiency and lifetime of diamond saw blades have a particle size, concentration, binder hardness diamond sawing process parameters and the like. It can cut the number of blades have wire-speed, cutting feed rate and concentration.
First, cutting parameters

(1) blade speed: In practice, the line speed diamond saw blade by equipment conditions, and restrictions are quality blade sawing stone before nature. From the optimum blade life and cutting efficiency, the blade should be selected according to the different nature of the linear velocity of the stone. When sawing granite, blade speed can be selected within 25m ~ 35m / s range. For the high quartz content of granite sawing and difficult, remove the blade speed limit is appropriate. In the production of granite tile, diamond saw blades using a smaller diameter, line speed up to 35m / s.

(2) Cutting depth: Cutting depth is involved in diamond wear, effective sawing, saw the forces and the important parameters are sawing stone by nature. In general, when a higher line speed diamond saw blade, cut Consumers should select a small depth from the current technology, the depth of the diamond sawing can choose between 1mm ~ 10mm. Usually with a large diameter blade sawing granite blocks, cutting depth can be controlled within 1mm ~ 2mm between the feed rate should be reduced at the same time. When larger diamond saw blade line speed, should choose a large depth of cut. But in performance and tool strength saw the extent permitted, should try to take a larger concentration of cutting cutting to improve cutting efficiency. When the machined surface is required, you should use a small depth of cut.

(3) feed rate: Feed rate namely sawing stone feed rate. Its size affects the rate of cutting, the blade force and cutting heat dissipation by region. Its value should be based on the nature of the stone sawing to select. In general, cutting softer stone, such as marble, it may be appropriate to increase the feed rate, if the feed rate is too low, more conducive to improving cutting rates. Sawing fine structure, relatively homogeneous granite, may be appropriate to increase the feed rate, if the feed rate is too low, the diamond blade can easily be polished. But while cutting coarse structure UNEVEN granite, the feed rate should be reduced, otherwise it will cause the diamond blade vibrations cause fragmentation and reduce the cutting rate. Granite cutting feed rate is generally within 9m ~ 12m / min range selected.

Second, other factors

(1) diamond size: The size of diamond used in the range of 30 / 35-60 / 80. The more hard rock, should be selected with a finer granularity. Because under the same pressure conditions, the more detailed the more sharp diamond, is conducive to cutting hard rock. In addition, the general requirements of large diameter blade sawing high efficiency, should be selected with a coarser particle size, such as 30 / 40,40 / 50; low small-diameter blade cutting efficiency, cutting cross-section requires smooth rock, should selection finer granularity, such as 50 / 60,60 / 80.

(2) Segment concentration: the concentration of so-called diamond, diamond refers to the density distribution in the working layer carcass (ie contained diamond weight per unit area). "STANDARD", every cubic centimeter of carcass work containing 4.4 kt diamond at a concentration of 100%, containing 3.3 kt diamond at a concentration of 75%. Volume concentration indicates how many lumps in the volume occupied by the diamond and provides that when the concentration of 1/4 of the volume of the total volume of diamond is 100%. Increased diamond concentration is expected to extend the life of the blade, because of the increased concentration that is reduced by an average of each piece of diamond cutting forces suffered. However, increasing the depth of the blade will increase the cost, so there is a concentration of the most economical, and the concentration increases with the shear rate increases Cheng.

(3) binding agents tip hardness: In general, the higher the hardness of the binding agent, the stronger its wear resistance. Thus, when the abrasive sawing large rock hardness binding agent should be high; when cutting soft rock material, binder hardness should be low; when sawing large abrasive and hard rock, binder hardness should be moderate .

(4) force effect, temperature effect and wear damage: diamond saw blade cutting stone in the process will be subject to centrifugal force, cutting force, cutting heat alternating loads and other effects.

Due to the force and temperature effects caused by diamond saw blade worn donate damage. Force effect: during sawing, the blade is subject to axial force and tangential force. Because of the force acting radially and in the circumferential direction, in the axial direction so that wavy blade, dish-shaped in the radial direction. Both can cause deformation of the rock section is not flat, stone waste more time sawing noise, vibration intensified, causing lumps early diamond breakage, reduce blade life.

Temperature effects: the traditional theory: influence of temperature on the saw blade process is mainly manifested in two aspects: First, the cause agglomeration of diamond graphitization; the second is caused by hot carcass Wilson force diamond and the diamond particles resulting from premature loss . New research shows that: the heat generated during the cutting of the main incoming caking. Arc temperature is not high, generally between 40 ~ 120 ℃. The abrasive grinding point has a higher temperature, generally between 250 ~ 700 ℃. The average temperature of the coolant only reduce arc zone, the temperature of the abrasive grains was less affected. This temperature does not result in graphite charring, but cause friction properties between the grains and the workpiece changes, and thermal stress occurs between the diamond and additives, resulting in a fundamental failure mechanisms diamond of bending. Studies have shown that the temperature effect is to make the damaged blade biggest factors.

Grinding damage: due to the force and effect of temperature than should, after a period of use the blade tends to produce grinding damaged. Grinding damaged form are the following: abrasive wear, local crushing, a large area of ​​broken off, binders direction along the cutting speed of mechanical abrasions. Abrasive: Diamond particles and constant friction-type member, a planar edge passivation, losing cutting, increasing the friction. Sawing heat causes the surface graphitization of diamond particles TLC, greatly reduce the hardness, increased wear: Heat stress generated from the surface of diamond particles alternating, but also withstand the stress of alternating cutting, fatigue crack occurs locally broken, revealing a sharp new edge, is an ideal wear form; large crushing: to withstand impact loads when the diamond particles in the Leads, the more prominent of grains and grain prematurely consumed; off: alternating diamond cutting force binding agent particles are constantly shaking and rattling. At the same time, thermal wear and sawing sawing process of binding agent per se to soften the bonding agent. This makes the binder holding force drops when the cutting force is greater than the holding force on the particles, the diamond particles will fall off. No matter what kind of wear and tear are closely related to the diamond particles bear the load and temperature. Both of which depend on the process and Cheng cut cooling and lubrication conditions.

 
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Add: No.1, Yulin, Shuangqiao, HIGH-NEW
Tech Zone, Zhengzhou, Henan,450001, China
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