Diamond saw blades for cutting metal can cause

1 , diamond saw blade is characterized by soft afraid of hard afraid
2, the metal part of the plastic material , is for marble, glass , the metal to be "soft" is much more
3 , marble, glass is brittle concrete saw blades  material , harder than the metal
4 , diamond is a valuable material , although the diamond saw blade diamond is a man , but it is expensive , it is made ​​by a method using powder metallurgy , that is, the diamond particles in the metal powder mixed sintering rather backward over the blade , the blade is to wrap diamond grinding wheel for metal rubbed off , exposing the diamond particles less than half the pieces , this is the diamond particles exposed head was cut marble "blade"
5 , diamond saw blade "cut" marble , it granite blade   is actually a diamond will powdered marble , marble which will "cut" open to the
6, if using a diamond saw blade to "cut" metal , "soft" diamond particles of the metal will be "glued down " so that the diamond blade failure . Remember: Do not use diamond saw to cut metal !
7 , with ordinary thin grinding wheel cutting metal is possible, although this wheel is a metal ground into powder, but not as good as diamond grit is precious , and that sand is bonded with a special adhesive overall shape , that is, said that the whole can be " cut" of the sand grains , cylindrical sanding off the back of the sand can continue to "cut"

Diamond tool materials species classification

Synthetic polycrystalline diamond (PCD) and synthetic polycrystalline diamond and carbide composite blade (PCD / CC)
PCD is at high temperature ( about 1800 ℃), pressure (5 ~ 6MPa) , the use of cobalt and other metal binding agent to a  oncrete crack chaser number of polycrystalline diamond crystal powder polycrystalline material , although slightly lower than the hardness of a single crystal diamond , but it is randomly oriented diamond grains polymerization , is isotropic , as can be arbitrarily oriented cutting tool sharpening , no natural diamond that must be selected as the best cleavage plane as a rake . In cutting, the cutting edge is very sensitive for accidental damage , wear resistance is also strong , long stay sharp cutting edge , can be used when machining high cutting speed and larger cutting depth ( to eat deep ) , life concrete core bits  is generally higher than the WC-based cemented carbide cutting tools 10 to 500 times , and because the metal binding agent PCD has conductivity , making PCD easy to cut to shape , and is a rich source of raw materials , the price is only a few tenth of natural diamond a fraction of the ten have become traditions WC-based cemented carbide cutting tools , high-performance alternatives.
PCD inserts to improve the toughness and weldability in the cemented carbide substrate , sintered or pressed on the surface of 0.5 ~ 1mm thick layer of the composition of PCD diamond composite blade (PCD / CC). PCD / CC welding or machine folder available way of making knives. Due to its good weldability , regrinding easy , low cost, and polishing pads for granite  therefore widely used. Hereupon , PCD and PCD / CC sharp cutting edge of the tool and are not as good surface quality single crystal diamond , while its workability is poor, the grinding ratio is small , it is difficult according to the geometry of any shape head , still not easy to manufacture with chipbreakers indexable end mills and other geometric shapes and complex products.
CVD diamond
CVD diamond is a diamond material of high wear resistance of pure , non- binding agent , which is at low pressure (<0.1MPa) prepared under . CVD diamond films are coated CVD (CD) and CVD thick (TFD) forms.
CD is a CVD ( chemical vapor deposition ) process , the carbide substrate ( K type alloy used ) is deposited to a thickness of about 10 ~ 30μm, composed of a polycrystalline diamond film is made .

diamond saw blade speed by equipment conditions

(1) diamond blade speed: in practical work, diamond saw blade speed by equipment conditions, saw the quality and the nature of the restrictions before sawing stone. From the optimum blade life and cutting efficiency, it should be selected depending on the nature of the stone saw blade speed. Sawing carbide drill bits  granite, the blade speed at 25m ~ 35m / s within the selected range. For high quartz content and difficult cutting granite, remove the blade speed limit is appropriate. In the production of granite tiles, the use of smaller diameter diamond saw blade, wire speed can reach 35m / s.
(2) Cutting Depth: diamond cutting depth is related to wear, effective cutting, saw cutting force conditions and the 12 inch saw blade  nature of the important parameters of stone. Generally speaking, when the line speed diamond saw blade is high, should be selected for cutting of small depth, from the current technology, the cutting depth of the diamond can choose between 1mm ~ 10mm. Usually with a large diameter saw blade cutting granite blocks, the cutting depth can be controlled within 1mm ~ 2mm between the feed rate should be reduced at the same time. When the line speed diamond saw blade is large, a large cutting depth should be selected. But in performance and tool strength saw the extent permitted, should try to take a greater depth of cut for cutting to improve cutting efficiency. When the machined surface colde saw blade  when requested, should be used small depth of cut. (3) diamond saw blade feed rate: Feed speed incurs sawing stone feed rate. Its size sawing rate impact, the force and the cutting blade heat dissipation area. Its value should be based on the nature of the selected cutting stone. Generally speaking, sawing softer stone, such as marble, may be appropriate to increase the feed speed, if the feed rate is too low, more conducive to high cutting rates. Sawing fine structure, relatively homogeneous granite, may be appropriate to increase the feed speed, feed rate is too low if the diamond blade easily be polished. But sawing UNEVEN coarse granite structure, should reduce feed speed, otherwise it will cause the blade vibration and reduce fragmentation leading diamond cutting rates. Granite cutting feed rate is generally 9m ~ 12m/min within the selected range.

Diamond saw blade consists of two parts; the base body and head

 Diamond saw blade is a cutting tool, widely used in stone, ceramics and other brittle materials processing. Diamond saw blade consists of two parts; the base body and head. Head substrate is bonded to the main support part and head is in the course of the part from the cutting, head are  carbide grinding wheels constantly in use and consumed, and the base body is not, the cutting head is able to play the role because it contains diamond, diamond hard as the most material, which cut the tip friction object to be processed while the diamond particles from the metal inclusions inside the tip. In use, the metal matrix with the consumption of diamond, the ideal situation is generally a metal carcass consumed faster than the diamond, so that the sharpness of the blade can ensure head while ensuring a longer life span, the middle part the matrix is ​​generally Mn steel. outer part is the head.
Classification of diamond saw blades
More and more industries in the production  turbo blades process using a diamond saw, with industry consolidation segments, diamond saw blade types are becoming increasingly refined.
I. manufacturing technology Category:
A sintered diamond saw blade: sub cold sintering and hot pressing two kinds, pressed sintering.
2, the welding diamond blade: high-frequency welding and laser welding of two types, high-frequency welding by melting the tip and substrate media are welded together, the laser welding head by high temperature laser beam melts the edge contact with the substrate forming a metallurgical bond .
3, Diamond Saw Blade: the head is attached to the powder by a plating method on the substrate.
Two appearance Category:
A continuous edge blade: Continuous serrated diamond saw blade, usually produced by sintering method, commonly used as a basis for  wet saw blades bronze binder matrix material, cutting water to be added to ensure the cutting effect, and will be useful for laser cutting head gap species.
2, blade-type blade: serrated disconnected, cutting speed, suitable for dry and wet cutting method.
3, turbo saw blade: 1,2 combined with the previous two advantages, sawtooth-shaped uniform continuous presence turbo punch, improved cutting speed and increase service life.

Circular blade how to install

Usually get the machine, many people do not know how to deal with, to share some of the following circular blade shearing machine disassembly and installation processes and the steps that  core drill bits we should pay attention to some of the problems!
The circular blade shears and  how to mix it together? First, we must first remove the front bench clipboard, front support arms, and lower front cover plate. Then we must be very careful, very sharp circular blade shears, when the whole process of operation are used to bring gloves, first turn off the pump motor, loosen the screw when the first machine in the middle of the clipboard loose screws at both ends The left one cup grinding wheels  screw from the fixed effect, and then screw the rear of the clipboard on the blade, this time you can grab the clipboard blades by hand, leaving both ends of the screws removed, remove the rear , slowly remove the circular blade, then you can start the pump, so that the slider in the upper dead point, with wooden table and on the mat in between the blades, turn off the  concrete ring saw pump motor, loosen and remove all installed on the blade screws and gently remove the circular blade.
The second step, shearing blades on the installation, first with the blade, with the specifications for the M12 * 40 screws on the blade, not on the ends of the first blade. Then be sure to use the stick against the upper blade, the blade and the contact surface of the slider can be fully tightened after snapping has been installed on the M12 * 40 bolts, when the slider down to the bottom dead point, to turn off pump motor, and then loaded on the blade screws tightened, the blade screw tightening torque should be 35N / M.
Finally, under the circular blade shears installation process, oil pump, when the slider up to the upper dead point, turn off the pump, replace the next round blade, using M12 * 45 hex screws, then pressed with a wooden stick under the blade, so that the next stage of the work under the blade and the blade snapping joints fully tighten screw. In this way, the circular blade clipboard installation process is complete.

Diamond grinding wheel wear and tear

Some devices are also equipped with spindle speed , wheel auto repair, tool nose radius microscope and automatic processing devices. Grinding wheel surface is essentially randomly distributed on a large number of abrasive grains in the process of cutting . Because diamond, cubic boron nitride and other superhard materials with high hardness and  abrasive grinding wheels wear resistance , and its grinding mechanism and general grinding of metallic materials have varied considerably . System superhard materials during grinding diamond wheel loss mechanism for rational selection and use of diamond grinding wheel has guiding significance .
Diamond wheel loss microanalysis :
The various conditions of use after grinding diamond wheel was observed under a microscope , the loss can be analyzed in detail , the results are as follows:
In the grinding force and grinding speed is low under the conditions of diamond grinding wheel , the surface of the angular distribution of a large , consistent reflective facets of diamond abrasive wear . This diamond blade saws  is because the diamond grains and superhard materials produced by mechanical friction and mechanical wear. This wear is gradual, with its grinding abrasive wear amount proportional to the stroke length .
In the grinding zone temperature higher grinding conditions on the diamond grit diamond wheel and graphite oxidation and loss. According to the properties of diamond , oxidation, depending on the degree of graphitization of the diamond abrasive crystals integrity and the degree of graphitization is also related with the crystal orientation . Good diamond abrasive crystal perfection , oxidation , low degree of graphitization loss .
Diamond grinding wheel diamond grit on the  concrete saw blades surface portion of the occurrence of local fracture and fragmentation , resulting in whole shedding. Cleavage occurs diamond abrasive damage . As the crystal is determined by the crystal structure of the cleavage of chemical bonds factor 7 type, intensity and distribution of the resulting fracture plane , it is often the bond strength along the azimuth plane the final generation . Randomness of the distribution of grain , determine the occurrence of cleavage destruction is inevitable.

Description of the advantages of diamond grinding wheel

 Diamond is the world have the hardest known material material , compared with the other abrasives , microhardness , respectively , boron carbide, silicon carbide and corundum double, triple and quadruple , so its grinding performance than several other abrasives is much higher. And its thermal conductivity is relatively high, sharp blade grinding , grinding ability, less diamond blade saws  congestion , better machined surface roughness , scratches and grinding burn and so small, but its deficiencies are prone to iron group elements react . Diamond grinding wheels and the products are mainly used in the manufacture of iron group metals
In order to place a variety of difficult circular blades to machine materials, such as stone, glass , cement products , refractories , ceramics, wood and carbide , silicon alloys and non-ferrous metal brittle ( casting ) and so on. Several physical properties of the abrasive :
As can be seen , compared with ordinary abrasives , diamond grinding wheel has the following excellent properties :
1 ) abrasive strength , high hardness , abrasive durability .
 2 ) high thermal conductivity, low grinding temperature .
3 ) thermal expansion drum wheels coefficient is small, long service life.
As shown by the excellent diamond can win , it is widely used in cutting , grinding, grinding its industry and sawing, drilling and other tools industries. Diamond products including diamond tools and diamond abrasive.
Diamond wheels are widely used in cemented carbide, cermet , cast iron , ceramics , stones, stone, ferrite, concrete, refractory materials, fiber reinforced plastics and many other materials, grinding, its scope and the amount is increasing . The varieties are wheel, Whetstone , grinding piece , street wear strips.