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  2. Drilling stabilizer - Wikipedia

    en.wikipedia.org/wiki/Drilling_stabilizer

    This type is usually not advised on oil wells due to the risks of losing blades, but is regularly used when drilling water wells or on low-cost oilfields. Usually 2 to 3 stabilizers are fitted into the BHA, including one just above the drill bit (near-bit stabilizer) and one or two among the drill collars (string stabilizers).

  3. Cutting tool (machining) - Wikipedia

    en.wikipedia.org/wiki/Cutting_tool_(machining)

    Rotary cutting tools include drill bits, countersinks and counterbores, taps and dies, reamers, and cold saw blades. Other cutting tools, such as bandsaw blades, hacksaw blades, and fly cutters, combine aspects of linear and rotary motion. The majority of these types of cutting tools are often made from HSS (High-Speed-Steel).

  4. Carbide saw - Wikipedia

    en.wikipedia.org/wiki/Carbide_saw

    Due to the thin blade body the blades must be stabilized to minimize the side vibration amplitudes. When the first experiments with carbide saws were made, a development engineer of Advanced Machine & Engineering in Rockford stabilized the blade by using a broomstick which he pushed against the vibrating blade, minimizing the vibrations.

  5. Ice drilling - Wikipedia

    en.wikipedia.org/wiki/Ice_drilling

    The ice must be cut through, broken up, or melted. Tools can be directly pushed into snow and firn (snow that is compressed, but not yet turned to ice, which typically happens at a depth of 60 metres (200 ft) to 120 metres (390 ft)); [22] this method is not effective in ice, but it is perfectly adequate for obtaining samples from the uppermost layers. [23]

  6. Cemented carbide - Wikipedia

    en.wikipedia.org/wiki/Cemented_carbide

    The coefficient of thermal expansion of cemented tungsten carbide is found to vary with the amount of cobalt used as a metal binder. For 5.9% cobalt samples, a coefficient of 4.4 μm/m·K was measured, whereas 13% cobalt samples have a coefficient of around 5.0 μm/m·K.

  7. Tool steel - Wikipedia

    en.wikipedia.org/wiki/Tool_steel

    1.11–1.30% carbon: files, small drills, lathe tools, razor blades, and other light-duty applications where more wear resistance is required without great toughness. Steel of about 0.8% C gets as hard as steel with more carbon, but the free iron carbide particles in 1% or 1.25% carbon steel make it hold an edge better.

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