lifetime of saw blades factors

 Impact efficiency and lifetime of diamond saw cutting process parameters and factors of the diamond particle size, density, hardness and  diamond blade saws other binders. It has cut the number of blades can be wire-speed, concentration and cutting feedrate.
One, sawing parameters:
(1) blade speed: In practice, the line speed diamond saw blades 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 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. Granite tiles in the production, the use of smaller diameter diamond saw blade, the line speed can reach 35m / s.
(2) Cutting Depth: diamond cutting depth diamomd core drill bits  is related to wear, effective cutting, saw cutting force conditions and the 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 when requested, should be used small depth of cut.
(3) Feed speed: Cutting feedrate incurs  core bits for concrete 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.

When coarse diamond size and granularity of a single

sharp saw blade, cutting efficiency is high, but the flexural strength of agglomerated diamond drop; when fine or coarse grained diamond size when mixed with saw blade durability, but efficiency is low. Considering these factors, choose diamond size 50/60 mesh is more appropriate.
(2) the selection of diamond concentration distribution
Within a certain range, when the diamond concentration changes from low to high, the blade sharpness and cutting efficiency  4 inch saw blades decreased, while life is gradually extended; but the concentration is too high, the blade becomes blunt. The use of low concentration, coarse, efficiency will be increased. The use of various parts of the cutting head when the different roles of different concentrations (i.e. three or more layer structure in the intermediate layer can be used in low concentrations), the saw blade during the work head to form an intermediate groove, with helps prevent blade deflection, thereby improving the quality of stone processing.
3 diamond strength selection
Is to ensure the strength of the diamond cutting important indicator of performance. High intensity causes the crystal is broken, the polishing abrasive grains are in use, the sharpness decreased, resulting in performance degradation tool; diamond enough strength when subjected to shock easily broken, difficult to bear heavy cutting. It should choose a strength of 130 ~ 140N.
4 choice of binder phase
Depends not only on the performance of  concrete saw blades the blade diamond, but on the diamond and the binder with the appropriate head of this composite material composed of the overall performance. For marble and other soft stone, head of the mechanical properties required is relatively low, the choice of copper-based binder. The sintering temperature is low but the copper-based binder, strength, low hardness, high toughness, low bonding strength with the diamond. When adding tungsten carbide (WC), the WC or W2C to as a skeleton metal, with the amount of cobalt in order to improve the strength, hardness and binding properties, and add a small amount of low melting point and low hardness Cu, Sn, Zn and other metal for bonding phase. Main plus ingredients should be finer than 200 mesh size, add ingredients finer than 300 mesh size should be.
5 Select the sintering process
As the temperature increases, the core bits for concrete  carcass densification improved flexural strength also will increase, and with the holding time, the blank matrix and diamond caked flexural strength increased firstly and then decreased, you can choose 120s at 800 ℃ sintering processes to meet performance requirements.

Diamond Saw Blade Application: Multi Disc Diamond Stone Saw

Diamond Saw Blade Application: Multi Disc Diamond Stone Saw
Disc Diamond Stone Saw HQJ-2200 multifunction stone sawing machine , saw blade can be installed 1600SM, 1800SM, 2200SM diamond saw . Whole structure consists of a fixed base connected on two pillars and  PCD grinding wheel two columns on the top rack of the upper beam composition , characterized in that : the left and right wheel saw through the left and right axle mounted on the left and right axle seat, left right column shaft seat and slidable along the sleeve as a whole , the left and right sleeve is provided with locking means , the left and right sleeve integrally connected via the  sds drill bits crossbar , the crossbar is mounted on a motor driving the left wheel saws , the left and right saw blade is mounted between the wheels , the rack is mounted on the beam motor drive shaft about double worm , worm drive around the left and right worm , worm around a wire of the mechanical drive for adjusting the left and right sleeve , so the mechanical wire nut connections via the left and right sleeve , the said one end of said wheel saw with bosses , left and  ceramic tile saw right axle center line of the angle of less than 100 .
Main motor : 37KW-55KW: about lifting motor 2.5KW.
Total power :42-65KW
Saw Installation : 1600SM, 1800SM, 2200SM diamond saw blades "Optional"
Installation size: 11000 mm × 7000 mm stone processing size: 3 cubic

Diamond tool according to materials which several species classification

Single crystal diamond cutting tool must be used for large particles ( mass greater than 0.1g, the best path length not less than 3mm), mainly used in surface roughness , geometry, high precision and dimensional accuracy requirements of precision and ultra precision machining applications fields.
Natural diamond single crystal diamond is the most wear-resistant material . Fine texture of its own , after fine grinding, cutting edge concrete crack chaser  edge edge radius as small as 0.008 ~ 0.005μm. But more brittle natural single crystal diamond , the crystal anisotropy, different surfaces or in the same plane of the crystal in different directions were different hardness , during grinding and use must choose the right direction . The use of harsh conditions, coupled with natural single crystal diamond resources are limited, the price is very expensive, so they use a production PCD, PCD / CC and CVD diamond tools . Some natural single crystal diamond is mainly used for ultra-precision machining non-ferrous metals or gold jewelry production .
Synthetic single crystal diamond the size, shape and performance are in good agreement , present due to high pressure technology matures , a certain size can be prepared by synthetic single crystal diamond , especially in the processing of high wear-resistant laminated wood , it performance than PCD diamond cutting edge will not cause premature passivated.
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 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  cup grinding wheels 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 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  sds hammer drill bits 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 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 matrix detection indicators

testing methods
Diamond saw blade matrix is ​​normally provided by 65Mn, T12 material composition with slotted disc, after quenching and  wet diamond polishing pads tempering heat treatment is made. The processing required dimensional accuracy and geometrical precision both requirements. Dimensional accuracy requirements include: diameter, diameter, thickness, nozzle, gear units. Shape and position accuracy including: roundness, concentricity, flatness, parallelism, runout, face runout.
Diamond saw blade sawing work must ensure that small deformation, rigidity in order to make uniform thickness sawn slate of board rate. To meet these requirements, you must make multiple blade leveling and stress adjustment. Side jump flatness and smaller, more uniform stress. The better usage of the blade. Currently the world's most advanced set of stress testing and handling equipment based sports school saw peace as one detected by stress testing and rolling unit, flatness and side jump correction unit, automatic detection unit and PC software control unit four most components. How it works: the first high-precision laser sensor measures the base of the indicators, and then through the PC software control unit determines whether the  14 inch saw blade indicators meet the requirements in order to decide whether or not to stress rolling unit, flatness and side jump correction unit issued a directive , the substrate to be corrected. Can achieve the tension side jump, jump diameter, flatness four indicators integrated automatic processing.
The flatness and side jump test, which flange plane to plane, by laser sensor slide rail precise detection surface of the substrate while rotating the highest point and the lowest point of the distance between the same plane. Some devices also currently 50mm2 area to the highest point and the lowest point of the research object, the substrate surface of flap wheels  the "package" particularly sensitive, and the image is displayed on the screen. If the base body pass, the point of the substrate surface are uniformly distributed to the reference plane in the center of a small control zone.
To the base of stress testing, is the use of a substrate pre a constant deformation, and by the laser sensor 90 axially proximal the deformation amount of the matrix stress detection to quantify the same time, avoiding the thickness and other factors of the stress detection effects.

Diamond Certification

 In fact, to identify the authenticity of a diamond, with a 10x magnifying glass only as an auxiliary operand can be a simple observation
Method One:
Observed diamond waist, waist-shaped frosted if it is best suited for this method, because more than any diamond imitations hard  abrasive tools to take, it will not appear as risk imitations like thin strip lines, diamond waist is grainy appearance.
Method two:
Also because of the diamond imitations than to take a hard, run imitations facet ridge often feel obtuse than diamond, and diamond facets must be a sharp ridge. Method three:
Than the risk-based diamond imitations hard, take imitations facet ridge often appears wear. Method four:
If left natural diamond surface, there is the opportunity to discover the natural surface of the diamond's unique "triangular growth pattern five:
If the diamond appear Bengduan mouth, usually are ladder-like appearance, but it will take very different presentation of imitation goods curved arc or conchoidal. A specific gravity test:
  There are a measure of the proportion of  drill bits liquid gemstone weight; specific gravity of 3.32 we can use the test liquid used genuine diamonds. The specific gravity of 3.52 natural diamonds, the proportion of all natural diamonds placed in the water will sink, so that both the proportion of water floating in gems, diamonds can be sure it's not.
(2) penetration observation:
  Diamond has a high refractive index, the higher the refractive index of the diamond, the stronger the light reflected power, relatively low degree of perspective. May prepare a picture of a straight paper to be measured two unknown diamonds, face down, capping in a straight line from the back of the diamond to the naked eye directly read on, if they  floor polisher pads can see the diamond under pressure a straight line, it is certainly not a natural diamond.
3 lipophilic law:
  There is a diamond on the oil "oil absorption" fake diamond does not have this feature. Diamonds dipped slightly in the face amount of grease, rub the diamond with the thumb, the thumb will feel a plastic viscosity, easy to slide, and then let the thumb with fake diamonds slippery feeling.
4 breathe test:
  Natural diamond heat transfer capacity, good heat disperse quickly. Diamond to be tested near your mouth, breathe gently, so that the tested diamond covered with mist, then immediately watch the diamond mist volatile situations, such as natural diamonds, the fog will be immediately dispersed, whereas in the fog fake diamonds remain for a while, until dispersed.

large diamond saw blades

 1 product heat treatment method: This large-size saw the matrix heat treatment, currently there is no special equipment, we use a unique heat treatment process, a good solution to large size, thin thickness of the core bits for concrete  base body heat problems, can better control the hardness HRC38 ± 3 range improved blade stiffness matrix, increasing the life of the product.(2) processing methods: face grinding also saw the matrix product processing difficulties. We have developed a white surface grinder lathe, very clever solution to this problem, the product thickness tolerances can reach the national standards, greatly improving the static balance indicators, in addition to material due to surface oxidation layer and decarburization, product fatigue life greatly improved.3 blade cutting process for chip removal mining practical difficulties, the company also made a matrix shape bold exploration: We saw the matrix using varying amounts of the appropriate parts machining holes hollowed out, does not affect the overall strength of the blade under the premise of improving the cooling BTA efficiency, extend the blade life and reduced energy and mining blocks shorter time.Fourth, with the  flap discs traditional way of exploitation of comparative economic and technical indicators
New mining methods applied to improve the resource utilization rate of extraction, the exploitation of quality improvement, a corresponding increase in value-added products. Reduce production costs, while overcoming the traditional way of exploitation of poor safety performance exist, serious damage to the environment and other shortcomings, has great economic social benefits. Fifth, use requirements1 Before Installation(1) saw the 4 inch saw blades  track laying claim sleepers solid formation, saw cutting process in order to avoid shaking, saw the track parallelism tolerance to ≤ 5mm, the level of tolerance ≤ 2mm.(2) In order to ensure flatness of the blade during cutting strength, the saw blade clamping flange diameter> i280ram, roughness flange side jump directly affects the blade. Therefore, the user should check before using flange accuracy, it is not generally Ф280mm flange flatness <0.05mm, and ensure clean flange must not remain stone chips dirt.(3) regular testing Saw axis accuracy, and ensure its spindle runout ≤ 0.03mm, in order to avoid the blade cutting process produces jitter, affecting the quality of life of saw blade material cutting.(4) cooling water directly affects the size blade cooling effect, chip capacity blade cutting life. Therefore recommended Ф2000 (or Ф2200) cooling water ≥ 1001/min, Ф2800 (or Ф3000) cooling water ≥ 1601/rnin, and fully injected into the blade cutting seam.