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PDC Drill Bits Matrix Body 8 Inch For Very Hard Formation Rock Drilling

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    Buy cheap PDC Drill Bits Matrix Body 8 Inch For Very Hard Formation Rock Drilling from wholesalers
     
    Buy cheap PDC Drill Bits Matrix Body 8 Inch For Very Hard Formation Rock Drilling from wholesalers
    • Buy cheap PDC Drill Bits Matrix Body 8 Inch For Very Hard Formation Rock Drilling from wholesalers
    • Buy cheap PDC Drill Bits Matrix Body 8 Inch For Very Hard Formation Rock Drilling from wholesalers
    • Buy cheap PDC Drill Bits Matrix Body 8 Inch For Very Hard Formation Rock Drilling from wholesalers

    PDC Drill Bits Matrix Body 8 Inch For Very Hard Formation Rock Drilling

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    Brand Name : ROSCHEN
    Model Number : 8INCH
    Certification : ISO
    Price : Negotiate
    Supply Ability : 100000 pcs
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    PDC Drill Bits Matrix Body 8 Inch For Very Hard Formation Rock Drilling

    PDC drill bits Matrix body 8 inch for very hard formation rock drilling

    PDC Drill bit, diamond drill bits, diamond core drill bit

    soft formation, medium soft formation, hard formation, medium hard formation, very hard formation


    PDC means Polycrystalline Diamond Composite or Compact.

    PDC are made by combining some layers of polycrystalline diamonds (PCD) with a layer of cemented carbide liner at high temperature and high pressure.

    PDCs are among the most rigid of all diamond tool materials.

    PCD simply means Polycrystalline Diamond: PCD are normally made by sintering many micro-size single diamond crystals at high temperature and high pressure. PCD has good fracture toughness and good thermal stability, and is used in making geological drill bits.

    PDC has the advantages of diamond's high wear resistance with carbide's good toughness.


    Here at Roschen, We supply PDC drill bits made with a range of shaped cutters or polycrystalline diamond compacts (PDC) brazed on a body.

    PDC Cutters are made from carbide substrate and diamond grit. High heat of around 2800 degrees and high pressure of approximately 1,000,000 psi forms the compact. A cobalt alloy is also present and acts as a catalyst to the sintering process. The cobalt helps bond the carbide and diamond.

    As a general rule, large cutters (19mm to 25mm) are more aggressive than small cutters. However, they may increase torque fluctuations.

    Smaller cutters (8mm, 10mm, 13mm and 16mm) have been shown to drill at higher ROP than large cutters in certain applications. One such application is limestone for example.

    Additionally, small cutters produce smaller cuttings while large cutters produce larger cuttings. Large cuttings may cause problems with hole cleaning if the drilling fluid cannot carry the cuttings up.

    (1) or (2) Soft and soft sticky-Highly drillable formations such as clay, marl, gumbo and unconsolidated sands.
    (3) Soft-medium-Low compressive strength sands, shale and anhydrites with hard layers intermixed.
    (4) Medium-Moderate compressive strength sand, chalk, anhydrite and shale.
    (6) Medium hard-Higher compressive strength with non-or semi-sharp sand, shale, lime and anhydrite.
    (7) Hard-High compressive strength with sharp layers of sand or siltstone.
    (8) Extremely hard-Dense and sharp formations such as quartzite and volcanic rock.



    PDC CUTTING STRUCTURE

    Very soft (1) to medium (4) formation type pdc bits have one dominant size of PDC cutter. PDC cutting structure is denoted in the following way:
    2 – this bit has mostly 19mm cutters
    3 – this bit has mostly 13 mm cutters
    4 – this bit has mostly 8 mm cutters


    Conversion Chart Inches to Millimeters

    This chart converts inches and fraction of inches into exact millimeters. Used for drilling tools sizes, drilling head sizes and rod ODs.

    Since 1959, the inch (in) has been defined and internationally accepted as being equivalent to 25.4mm (millimetres).

    mm = in/0.039370



    For more information, please contact:


    ROSCHEN INC.
    ROSCHEN GROUP LIMITED
    ROSCHEN HOLDINGS LIMITED


    Skype: ROSCHEN.TOOL , ROSCHEN_GROUP

    WeChat: +86-137 6419 5009 ; +86-135 8585 5390

    WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390

    Email: roschen@roschen.com ; roschen@roschen.net

    Website: http://www.roschen.com ; http://www.roschen.net

    http://www.roschen.cn ; http://www.roschendrill.com

    http://www.roschenmining.com ; http://www.roschendrilling.com


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    Bicenter PDC Drill Bits

    Quality PDC Drill Bits Matrix Body 8 Inch For Very Hard Formation Rock Drilling for sale
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