Nachi
Nachi Diamond Coated Drill
Manufacturer: Nachi-fujikoshi corp
Model: Diamond Coated
Outline
Diamond coating
Powder HSS with SG Coating and the tool life is 2-3 times of conventional drills.
Long tool life
The tool life is 10 times of conventional carbide drill in drilling high silicon aluminum
Precision
It is possible to acquire excellent surface roughness
Series
Diamond Coated Drill
Diamond Coated FF Drill
Features
Mechanism of Diamond Coating
Growth Process of Diamond Film
Growth process of Diamond film is called as Volmer-Weber type and generally increase its thickness by birth and growth of core repeatedly.
100% pure diamond coating Applicable on unique cutting edge Applicable on Micro tool
Cross section photo of diamond film
Work materials of Diamond Coated tools
Performance
Comparison of Drilling accuracy
Cutting Conditions
Drill Diameter : 3.0
Feed : 0.1mm/rev
Material: AS390
Depth: 10mm
Through Hole (Al-17%Si Alloy)
Coolant : Emulsion Speed: 80m/min
Machine : Vertical MC
Performance of drilling High silicone
ConditionsDrill : 6mm
Speed : 800m/min
Feed : 0.20mm/rev
Depth : 20mm
Through Material : AS390
Coolant : Emulsion
Performance of drilling MMC
Examples
| Drill Diameter | Material | Comparison of Tool Life | Drilling Condition | |
|---|---|---|---|---|
| 2.5 | ADC12 (Al–12%SiAlloy) | 20,000 Holes | 258,000 Holes | Rotation: 20,000 min⁻¹ Feed: 0.08 mm/rev Coolant: Emulsion |
| 6.0 | A390 (Al–17%SiAlloy) | 100 Holes | 2,300 Holes | Rotation: 8,000 min⁻¹ Feed: 0.1 mm/rev Coolant: Emulsion |
| 3.0 | GFRP | 3,000 Holes | 30,000 Holes | Rotation: 40,000 min⁻¹ Feed: 0.013 mm/rev Coolant: Dry |
| 1.5 | Pre-Sintered WC–Ceramics | 100 Holes | 14,000 Holes | Rotation: 1,000 min⁻¹ Feed: 0.01 mm/rev Coolant: Dry |
| 2.0 | Pre-Sintered Al₂O₃–Ceramics | Half Day to 3 days | More than 3 months | Rotation: 3,300 min⁻¹ Feed: 0.003 mm/rev Coolant: Dry |
