Suitable for efficient Drilling of Steel, Cast Iron and Stainless steel
Feature
Suitable for efficient Drilling of Steel, Cast Iron and Stainlesssteel
New substrate material, perfect balance of toughness and wear resistance
Using AlTiN-nano coating and unique post-processing of coating
Optimize groove profile and Drill point design, with super self-centering Performance, chip breaking performance and good chip evacuation performance
Specification
|
Drills Series |
Dimension Range |
Coolant Type |
Drilling Depth L/D |
|
D938-A3N |
1~20mm |
External Coolant |
3D |
|
D938-A3C |
2~20mm |
Internal Coolant |
3D |
|
D938-A5N |
1~20mm |
External Coolant |
5D |
|
D938-A5C |
2~20mm |
Internal Coolant |
5D |
|
D938-A8C |
3~20mm |
Internal Coolant |
8D |
|
D938-A12C |
3~16mm |
Internal Coolant |
12D |
|
D938-A15C |
3~14mm |
Internal Coolant |
15D |
|
D938-A20C |
3~12mm |
Internal Coolant |
20D |
|
D938-A25C |
3~8mm |
Internal Coolant |
25D |
Application
|
Material
|
P |
M |
K |
N |
S |
H |
||||||||
|
1 2 3 |
5 |
6 7 |
1 2 3 |
1 2 |
3 |
1 2 |
3 |
4 |
5 |
1 2 3 |
4 |
1 |
2 |
|
|
Carbon Steel, |
Alloy Steels, Tool |
PH and Ferritic/ |
Stainless |
Gray Cast Iron, |
High Alloy |
Forged Aluminium |
Cast Aluminium |
Copper Alloys |
Compound |
Heat Resistant |
Titanium |
Hardened |
Hardened |
|
|
D938-A3C |
◎ |
◎ |
◎ |
○ |
○ |
○ |
||||||||
|
D938-A3N |
○ |
◎ |
○ |
○ |
||||||||||
|
D938-A5C |
◎ |
◎ |
◎ |
○ |
○ |
○ |
||||||||
|
D938-A5N |
○ |
◎ |
◎ |
○ |
○ |
○ |
||||||||
|
D938-A8C |
◎ |
◎ |
◎ |
○ |
○ |
○ |
||||||||
|
D938-A12C |
◎ |
◎ |
◎ |
○ |
○ |
○ |
||||||||
|
D938-A15C |
○ |
◎ |
○ |
○ |
○ |
○ |
||||||||
|
D938-A20C |
◎ |
◎ |
◎ |
○ |
○ |
○ |
||||||||
|
D938-A25C |
○ |
◎ |
○ |
○ |
○ |
○ |
||||||||
|
◎ Most Suitable ○ |
Suitable |
|||||||||||||
Application case
D938 Processing Case (Pressure turbine discs)
|
Specification |
D938-A3N-0970 |
|
Dimension |
D9.7*47*89*d10 |
|
Material |
14Cr12Ni2WMoVNb (HB250) |
|
Cutting speed |
Vc=18m/min |
|
Feed rate |
fr=0.05mm/r |
|
Cutting depth |
ap=20mm |
|
Cooling method |
External Coolant |
|
Cutting method |
Vertical processing |
D938 Processing Case(Valve housing)
|
Specification |
D938-A15C-0850 |
|
Dimension |
D8.5*160*204*d10 |
|
Material |
35CrMoA (205-250HB) |
|
Cutting speed |
Vc=42.7m/min |
|
Feed rate |
fr=0.13mm/r |
|
Cutting depth |
ap=138mm |
|
Cooling method |
Internal Coolant |
|
Cutting method |
Vertical processing |

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