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                      6. Metal Bond Micron Diamond

                      Metal Bond Micron Diamond 

                      Warren Superabrasives | Saint-Gobain Surface Conditioning

                      A synthetic material, grown slowly compared to resin bond diamond, Saint-Gobain Surface Conditioning's metal bond micron diamond features monocrystalline structures with high toughness. The typical blocky crystals are suitable for resin, metal and electroplated bond systems in applications such as grinding ceramics, cemented carbides and glasses. They are also extensively used in polishing and other surface conditioning applications.

                      Processed using state-of-the-art grading equipment, Saint-Gobain metal bond micron diamond provides well-controlled particle size distribution and surface cleanliness in a wide range of challenging applications.

                       

                      Metal Bond Micron Diamond, Warren Superabrasives | Saint-Gobain

                       

                      • Availability
                      • FAQs
                      • SUPERABRASIVE CHOICE

                      Warren Superabrasives BrandWarren Micron Brand

                       

                      MB (< 0.25μm)
                      MB (0 - 0.25μm to 50 - 60μm)

                      MB Cu50% (>8 - 16μm)
                      MB Ni30% & 56% (>8 - 16μm)
                      MBMC (0 - 0.1μm to 40 - 60μm) - supercleaned

                       

                       

                      ABC Micron Brand

                      MB Micron 

                      0 - .20
                      0 - .50
                      0 - 1
                      0 - 2
                      1 - 2
                      1 - 3
                      1.5 - 3
                      2 - 3

                      2 - 4
                      2 - 5
                      2 - 6
                      3 - 5
                      3 - 10
                      4 - 8
                      5 - 7
                      5 - 10
                      6 - 8

                      6 - 10
                      6 - 12
                      7 - 10
                      8 - 12
                      8 - 15
                      8 - 16
                      10 - 14
                      10 - 20

                      14 - 20
                      15 - 25
                      15 - 30
                      20 - 28
                      20 - 30
                      20 - 40
                      25 - 30
                      30 - 40
                      40 - 60

                      ABC Micron products are less highly processed materials than Warren Micron products. For guidance on the choice between ABC and Warren Micron products, please contact our Customer Service Department.

                      Q: What does MICRON mean? 

                      A: MICRON refers to abrasive particle sizes typically 40 µm (1 µm = 40 microinches) or less.

                       

                      Q: What is a SUPERABRASIVE?

                      A: A very hard abrasive, usually natural or synthetic diamond and cubic boron nitride (CBN).  Hardness is measured on the Knoop Scale in megapascals (1 Mpa = 145 lb / in2 ) and diamond is 7000 Mpa with CBN following at 5000.  Conventional abrasives such as silicon carbide and aluminum oxide have much lower Knoop values of 2500 and 2200 respectively.

                       

                      Q: How are MICRON superabrasives measured and classified?

                      A:

                      • It depends on the size range:
                      • 50 nm - 3 mm, Laser Diffraction
                      • 0.5 nm - 10 µm, Dynamic Light Scattering
                      • 1 nm - 100 µm Electrophoretic Light Scattering
                      • 50 nm - 10 mm, Automated Imaging
                      • 10 nm - 100 µm, Sedimentation

                      For more information on fine particle measurement, visit www.malvern.com.  Download this white paper: "A Basic Guide to Particle Characterization" 

                       

                      Q: What are the key properties of superabrasive particles?

                      A: Size, shape, color, surface (extrinsic) chemistry, internal (intrinsic) chemistry, mechanical properties -- Ti and TTi (toughness index / impact strength and thermal toughness index), zeta potential (surface charge) and microstructure.

                       

                      Q: What is Particle Size Distribution (PSD)?

                      A: Most individual grains of a superabrasive powder batch are not the same size (or shape).  The powder consists of a distribution of particles of different sizes represented as a frequency distribution curve.

                       

                      Q: In a Particle Size Distribution (PSD) curve, what do the terms Median, Mode and Mean represent?

                      A:

                      • Median: the size where 50% of the particles is below/above that size
                      • Mode: the size with the highest frequency (i.e. the greatest number of particles with the largest size)
                      • Mean: the average size of the entire particle population

                       

                      Q: What is electroless nickel plating?

                      A: Electroless nickel plating (EN) is an auto-catalytic chemical technique used to deposit a layer of nickel-phosphorus on a solid workpiece, such as metal or plastic.  The process relies on the presence of a reducing agent, for example hydrated sodium hypophosphite (NaPO2H2·H2O) which reacts with the metal ions to deposit metal.  Alloys with different percentages of phosphorus, ranging from 2 - 5 (low phosphorus) to up to 11 - 14 (high phosphorus) are possible.  The metallurgical properties of alloys depend on the percentage of phosphorus.

                       

                      Q: What is electroless copper plating?

                      A: Essentially the same process as electroless nickel, but copper is the coating element. 

                       

                      Q: Why are superabrasives offered with nickel or copper coatings?

                      A: To improve the adhesion of the superabrasive in the bond matrix of the grinding wheel and to aid removal of heat from the grinding zone.

                       

                      Q: What is Ti and TTi?

                      A: Ti and TTi stand for Toughness Index and Thermal Toughness Index.  This is a measurement of the impact strength of the superabrasive and its ability to resist mechanical breakdown (friability).

                      The Ti test is performed on a superabrasive at room temperature.  The TTi test is run at room temperature on a superabrasive previously raised to an elevated temperature and allowed to cool down – this mimics the performance of the superabrasive in a grinding wheel in “real world” conditions. 

                      The Ti and TTi test is performed to ANSI (American National Standards Institute).

                       

                      Q: What is friability?

                      A: A measure of the ability of a superabrasive to be pulverized, crumbled or otherwise reduced to a powder.  Ti and TTi testing are employed to measure friability in superabrasives.

                       

                      Q: Why is diamond so hard?

                      A: Diamond is an allotrope of carbon, where the atoms are arranged in a variation of the face-centered cubic crystal structure called an atomic diamond lattice. It is this atomic structure which defines diamond's hardness. Diamond is well-known as a material with excellent physical qualities, most of which depend on strong covalent bonds between its atoms.  Diamond has the highest hardness and thermal conductivity of any material and those properties make it the abrasive of choice in many industrial drilling, grinding, lapping and polishing applications.

                       

                      The basic physical and chemical properties of synthetic diamond and CBN types can influence the performance of grinding wheels and superabrasive tools.  Several properties should be considered when choosing the optimum superabrasive for a specific application:

                      • Color
                      • Particle size and particle size distribution (PSD)
                      • Particle shape / morphology / aspect ratio / ellipticity
                      • Toughness and thermal toughness index (Ti & TTi)
                      • Extrinsic / surface chemical purity and cleanliness
                      • Intrinsic chemical purity
                      • Coating types and percentage by weight

                       Contact us

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                      Click on pictures to enlarge
                      Warren Micron: Metal Bond 330D-4 (4-6u) 2000x mag. ©

                      Warren Micron: Metal Bond 330D-4
                      (4-6u) 2000x mag. ©

                      Warren Micron: Metal Bond 1012C-15 (10-20u) 350x mag. ©

                      Warren Micron: Metal Bond 1012C-15
                      (10-20u) 350x mag. ©

                      Warren Micron: Metal Bond MBE 43D-2 (8-15u) 500x mag. ©

                      Warren Micron: Metal Bond MBE 43D-2
                      (8-15u) 500x mag. ©

                      Warren Micron: Metal Bond MRB 22C-2 (4-8u) 1500x mag. ©

                      Warren Micron: Metal Bond MRB 22C-2
                      (4-8u) 1500x mag. ©

                      Warren Micron: Metal Bond MBA 418D-2 (5-10u) 1000x mag. ©

                      Warren Micron: Metal Bond MBA 418D-2
                      (5-10u) 1000x mag. ©

                      Warren Micron: Metal Bond MB-DW Ni20% 322D-16 (10-20u) 650x mag. ©

                      Warren Micron: Metal Bond MB-DW Ni20%
                      322D-16 (10-20u) 650x mag. ©

                      Warren Micron: Metal Bond MD-DW Ni10% 1115C-3 (10-20u) 350x mag. ©

                      Warren Micron: Metal Bond MD-DW Ni10%
                      1115C-3 (10-20u) 350x mag. ©

                      Related Resources

                       Metal Bond Micron Diamond Particles

                      Related Products

                      Resin Bond Micron
                      CBN Micron
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