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KC-SMPLasersProcessingR&D(SelectedExamples)140603
1. Dr. Kuruvilla (Karl) Cherian
Independent Materials Scientist-Consultant
(Diamond and Advanced Materials Processing Technologies)
Home Office: 347 Rose Brier Drive, Rochester Hills, Michigan, USA
Email: kuruvilla.cherian@usa.net, amprayilusa@gmail.com
Excerpts from work in:
Simultaneous Multiple-wavelength and Pulsed Lasers
(SMP-Lasers) Processing R&D - Surface Engineering
Selected Examples
1. Aluminum to Aluminum Nitride Conversion
(Surface Modification)
2. Ophthalmologic Blades
(Surface Treatment for Enhanced Performance)
3. Hot Forging Tooling, Composite TiB2 Cladding
(Surface Reengineering/Remanufacturing)
4. Drills
(Surface Treatment for Enhanced Performance)
2. Dr. K. Cherian-L1-1&2
Simultaneous Multiple-wavelength and Pulsed Lasers (SMP-
Lasers) Processing R&D: Surface Modification, Surface
Treatments & Surface Reengineering / Remanufacturing for
Enhanced Performance (at QQC, Inc.)
Lasers
CO2 laser (6kW CW)
Nd:YAG laser (50J pulsed or 3kW CW)
Excimer (670mJ pulsed)
Selected Examples:
1. Aluminum to Aluminum Nitride Conversion
(Surface Modification)
SMP-Lasers Surface Modification Treatment;
Aluminum to Aluminum Nitride Conversion for:
enhanced wear resistance
erosion resistance and
corrosion resistance
2. Ophthalmologic Blades, Surface Enhancement
(Surface Treatment for Enhanced Performance
SMP-Lasers treated ophthalmologic blades;
composite metal / nanodiamond with antiglare
treatment for:
low friction,
low penetration forces and
enhanced durability
Treatment thickness ~200 Angstroms
3. Dr. K. Cherian-L2-3&4
3. Hot Forging Tooling, Cladding
(Surface Reengineering/Remanufacturing)
Composite TiB2 cladding of Hot Forging
Tooling with SMP-Lasers Treatment (for
working temperature in excess of 1400o
C)
Used and worn sample on left, remanufactured on
right.
Advantages:
Reduction in use of hot forging lubricants
Elimination of steam erosion
Elimination of thermal fatigue and cracking
Reduced hot metal diffusion and erosion
Enhanced material flow
~10x life improvement
4. Drills, Surface Enhancement Treatment
(Surface Treatment for Enhanced Performance)
As received SMP-Laser treated
SMP-Lasers treatment of drills
Grinding marks, burrs, heat treatment defects,
removed with SMP-Laser process – results in:
enhanced edge-strength
enhanced lubrication
enhanced chip removal
~15x performance enhancement