GD series- A new generation twist drills for general machining

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)

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)