DIM is a trade mark diamond pauber & MIMITALIA [email protected] om Fabrication of Complex Shaped Diamond Tools Via Powder Injection Moulding PM2010 WORLD CONGRESS Florence, 10-14 October 2010
May 15, 2015
DIM is a trade mark
diamond pauber & MIMITALIA [email protected]
om
Fabrication of Complex Shaped Diamond Tools Via Powder Injection Moulding
PM2010 WORLD CONGRESS
Florence, 10-14 October 2010
DIM is a trade mark
diamond pauber & MIMITALIA [email protected]
om
Fabrication technologies
Hot pressing: advantages and drawbacks
Electroplating: advantages and drawbacks
Pressureless sintering: advantages and drawbacks
HIP: advantages and drawbacks
DIM technology
Advantages
Still to improve:
•Powders
•Equipments
•Modelling
DIM is a trade mark
diamond pauber & MIMITALIA [email protected]
om
Traditional Technologies
ElectroplatingHot pressing
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Sintering furnaces set
Traditional Technologies
Hot isostatic pressing
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Metal Powder
Temporary binder
Backbone binder
Debinding
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DIM MATERIALS
TypicalVolume loading
Typical Viscosity
(Pa*s)100°C 100 s-1
Sintering temperature Typical
final density
Cobalt 45-50% 150-160 850-950°C 98%
Cobalt/WC 44-47% 170-180 950-1000°C 93-97%
Cobalt/Bronze 44-60% <100 840-900°C >98%
Cobalt/Iron 45-50% 150-160 900-950°C 97%
Cobalt/IronBronze
45-50% 120-130 850-950°C 93-97%
NEXT 400 45-50% 230-250 900-950°C 97-98%
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Equipments: Granulation and Moulding
Still to improve
Powders: Variety and Grades
Research: Modelling
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GradeDiamond
(40/60 mesh)
Co Cr SiO2 W WC WC/W2C WC-6%Co Total
Granite, harder (GH) 9.9% 83.5% 1.2% 0.0% 1.1% 1.3% 2.1% 0.9% 100.0%Granite, softer (GS) 9.6% 85.5% 1.2% 0.0% 1.1% 1.1% 0.8% 0.9% 100.0%Marble, soft (MS) 7.8% 87.2% 0.0% 4.1% 0.0% 0.8% 0.0% 0.0% 100.0%
DIM is a trade mark
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MATERIALS Class Block Length
Block Height
SLATEm2
FEED cm/h
Vs m/sec
Brown Chocolate
4 287 187 5,37 16 29
Kashmir Gold 1 344 198 6,81 35 31
New Bengal Black
3 312 190 5,93 20 29
Emerald Pearl
1 335 187 6,26 26 28
Absolute Black
3 337 140 4,72 20 29
Vizag Blue 2 277 204 5,65 35 30
DIM is a trade mark
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Traditional bead•Yield 7 m2/m•Feed 19 cm/h•Multiple re assembling
Monolithic bead•Yield 9 m2/m (present)•Feed 25 cm/h•No re assembling
DIM is a trade mark
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•A new process based on Diamond Injection Moulding has been developed and patented. The process allows to produce tools with intricate geometries not possible to make so far
•With the new process a innovative monolithic diamond bead has been produced and tested in a full scale plant
•Yield can be improved more than 50%, with a 25% higher feed
Conclusions