Coated Carbide Drills for Steel & Cast Iron MDH Series
Exceptional tool life in high-efficiency drilling
New Cutting Edge Shape
D Optimized cutting edge shape suppresses stress concentration and prevents chipping in high-efficiency drilling with high cutting edge load
MDH Series
Conventional Tool
Von Mises Stress (MPa) 3,500
0
MDH Series
MDH Series Conventional Tool
Tool Life Over 2.5 Times Longer Able to Continue
Fracture
After Drilling 365 feet
65
130
195
260
325
390
Drilling Distance (Feet)
Work Material: 1050 Steel Tool: MDH0800S08H05 Cutting Conditions: vc = 465 SFM f = .0157 IPR H = 1.496” (Through) Wet (Water-soluble, Internal Coolant Supply)
New Grade ACH70
HF Coat D TiAlCrSi-based super multi-layered coating provides excellent wear resistance and thermal resistance Tough TiAlB-based coating is employed on the carbide substrate to improve coating strength and fracture resistance
Super multi-layered TiAlCrSi Hardness HV: 46GPa Starting Temperature for Oxidization: 1,100°C TiAlB-based toughness layer
Balances wear and fracture resistance
3
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