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    Technical Development

    GD series- A new generation twist drills for general machining

    Date:2020/03/20


    Features:

    Linear cutting edge with high strength.

    Optimized drill point structure with better cutting performance.

    Combination of drilling simulation and experiments for optimized performance.

    Double margin design improve the machining stability.

    Special surface treatment guarantees high efficiency machining.



    Application range

    General drills for high efficiency machining of P (steel)、M (stainlesssteel)、 K (cast iron ) and various materials.


    Stable and enduring tool life

    Case 1

    tool type: GD05C-0560

    work piece materials: C70S6 (HRC30)

    V=100 m/min; f= 0.1 mm/r; H=27 mm

    Cooling system: water soluble cooling liquid (internal coolant)


    GD series dirll

    tool can still work

    Tool breakage

    Depth of drilling

    Quality of hole wall

    wear, can be machined continually

    cutting edge cracking failure

    wear failure


    Case 2

    tool type: GD05C-1000

    work piece materials:45#steel,

    V=150 m/min; f=0.25 mm/r; H=40 mm

    Cooling system: water soluble cooling liquid (internal coolant)

    wear, can be machined continually

    cutting edge cracking failure

    wear failure


    Outstanding machining precision

    tool type: GD03C-0820

    workpiece materials: C70S6(HRC30)

    V=120 m/min; f=0.23 mm/r; H=30 mm;

    Cooling system: water soluble cooling liquid (internal coolant).


    Excellent chip breaking performance

    tool type: GD05C-0600

    work piece materials: 1Cr18Ni9Ti (HB180)

    V=75 m/min; f=0.2 mm/r; H=30 mm

    Cooling system: water soluble cooling liquid (internal coolant)










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