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  2. Drill bit - Wikipedia

    en.wikipedia.org/wiki/Drill_bit

    Twist drill bits are available in standard lengths, referred to as Stub-length or Screw-Machine-length (short), the extremely common Jobber-length (medium), and Taper-length or Long-Series (long). Most drill bits for consumer use have straight shanks. For heavy duty drilling in industry, bits with tapered shanks are sometimes used. Other types ...

  3. Cutting tool material - Wikipedia

    en.wikipedia.org/wiki/Cutting_tool_material

    Cutting tool materials are materials that are used to make cutting tools which are used in machining (drill bits, tool bits, milling cutters, etc.) but not other cutting tools like knives or punches. Cutting tool materials must be harder than the material of the workpiece, even at high temperatures during the process.

  4. Diamond tool - Wikipedia

    en.wikipedia.org/wiki/Diamond_tool

    PCD has good fracture toughness and good thermal stability, and is used in making geological drill bits. Polycrystalline Diamond Composite or Compacts (PDC): They are made by combining some layers of polycrystalline diamonds (PCD) with a layer of cemented carbide liner at high temperature and high pressure. PDC has the advantages of diamond's ...

  5. High-speed steel - Wikipedia

    en.wikipedia.org/wiki/High-speed_steel

    It is usually used to manufacture a variety of tools, such as drill bits, taps and reamers. 1.3343 is the equivalent numeric designation for M2 material identified in ISO 4957. M7 M7 is used for making heavier construction drills where flexibility and extended drill life are equally important. M50

  6. Superhard material - Wikipedia

    en.wikipedia.org/wiki/Superhard_material

    The reported Vickers and Knoop hardnesses were intermediate between diamond and c-BN, making the new phase the second hardest known material. [39] Ternary B–C–N phases can also be made using shock-compression synthesis. It was further suggested to extend the B–C–N system to quaternary compounds with silicon included. [9] [40]

  7. Cemented carbide - Wikipedia

    en.wikipedia.org/wiki/Cemented_carbide

    Pobedit (Russian: победи́т) is a sintered carbide alloy of about 90% tungsten carbide as a hard phase, and about 10% cobalt (Co) as a binder phase, with a small amount of additional carbon. Developed in the Soviet Union in 1929, it is described as a material from which cutting tools are made. Later a number of similar alloys based on ...

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