Details
| Original language | English |
|---|---|
| Title of host publication | International Conference on Residual Stresses 9 (ICRS 9) |
| Pages | 391-397 |
| Number of pages | 7 |
| Publication status | E-pub ahead of print - 23 Sept 2013 |
| Event | 9th International Conference on Residual Stresses, ICRS 2012 - Garmisch-Partenkirchen, Germany Duration: 7 Oct 2012 → 9 Oct 2012 |
Publication series
| Name | Materials Science Forum |
|---|---|
| Volume | 768-769 |
| ISSN (Print) | 0255-5476 |
Abstract
There is growing interest in laser machining as an alternative to abrasive processes for creating cutting tool micro geometries. This technology is also suitable for creating micro geometries on cutting edges of superhard cutting tools. The pulsed nanosecond lasers, which are commonly used for this type of application, induce high thermal loads in the tool. This heat is believed to cause temperature gradients which result in tensile residual stresses at the cutting edge surface. They are generally unfavorable for the cutting tool performance because of the tendency to crack formation and propagation. Different levels of compressive residual stress are observed after each step (sintering, grinding, shot peening, etching and PVD-coating). From investigations of commercial processes for manufacturing PVD-coated carbide cutting tools it is known that the final residual stress state of the carbide subsurface is a result of the superposition of the stress states resulting from the individual process steps. In contrast to that, laser machining is expected to produce tensile residual stress due to the temperature gradient. The present work describes the influence of a substitution of grinding by laser machining in the process chain for the production of PVD-coated carbide cutting tools on the residual stress state in the finished tools.
Keywords
- Carbide tools, Laser machining, Process chain, Residual stress
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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International Conference on Residual Stresses 9 (ICRS 9). 2013. p. 391-397 (Materials Science Forum; Vol. 768-769).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Residual Stress Development in Laser Machined PVD-Coated Carbide Cutting Tools
AU - Breidenstein, Bernd
AU - Gey, Christoph
AU - Denkena, Berend
PY - 2013/9/23
Y1 - 2013/9/23
N2 - There is growing interest in laser machining as an alternative to abrasive processes for creating cutting tool micro geometries. This technology is also suitable for creating micro geometries on cutting edges of superhard cutting tools. The pulsed nanosecond lasers, which are commonly used for this type of application, induce high thermal loads in the tool. This heat is believed to cause temperature gradients which result in tensile residual stresses at the cutting edge surface. They are generally unfavorable for the cutting tool performance because of the tendency to crack formation and propagation. Different levels of compressive residual stress are observed after each step (sintering, grinding, shot peening, etching and PVD-coating). From investigations of commercial processes for manufacturing PVD-coated carbide cutting tools it is known that the final residual stress state of the carbide subsurface is a result of the superposition of the stress states resulting from the individual process steps. In contrast to that, laser machining is expected to produce tensile residual stress due to the temperature gradient. The present work describes the influence of a substitution of grinding by laser machining in the process chain for the production of PVD-coated carbide cutting tools on the residual stress state in the finished tools.
AB - There is growing interest in laser machining as an alternative to abrasive processes for creating cutting tool micro geometries. This technology is also suitable for creating micro geometries on cutting edges of superhard cutting tools. The pulsed nanosecond lasers, which are commonly used for this type of application, induce high thermal loads in the tool. This heat is believed to cause temperature gradients which result in tensile residual stresses at the cutting edge surface. They are generally unfavorable for the cutting tool performance because of the tendency to crack formation and propagation. Different levels of compressive residual stress are observed after each step (sintering, grinding, shot peening, etching and PVD-coating). From investigations of commercial processes for manufacturing PVD-coated carbide cutting tools it is known that the final residual stress state of the carbide subsurface is a result of the superposition of the stress states resulting from the individual process steps. In contrast to that, laser machining is expected to produce tensile residual stress due to the temperature gradient. The present work describes the influence of a substitution of grinding by laser machining in the process chain for the production of PVD-coated carbide cutting tools on the residual stress state in the finished tools.
KW - Carbide tools
KW - Laser machining
KW - Process chain
KW - Residual stress
UR - http://www.scopus.com/inward/record.url?scp=84885980577&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.768-769.391
DO - 10.4028/www.scientific.net/MSF.768-769.391
M3 - Conference contribution
AN - SCOPUS:84885980577
SN - 9783037858493
T3 - Materials Science Forum
SP - 391
EP - 397
BT - International Conference on Residual Stresses 9 (ICRS 9)
T2 - 9th International Conference on Residual Stresses, ICRS 2012
Y2 - 7 October 2012 through 9 October 2012
ER -