Details
| Original language | English |
|---|---|
| Pages (from-to) | 347-360 |
| Number of pages | 14 |
| Journal | CIRP Journal of Manufacturing Science and Technology |
| Volume | 7 |
| Issue number | 4 |
| Publication status | Published - 21 Aug 2014 |
Abstract
The major step of the process chain for regeneration of damaged components is the removal of excess weld material, called re-contouring. This material removal process influences the surface integrity and therefore the functional performance of components. But today the surface integrity, e.g. residual stresses, cannot be predicted to a satisfying degree due to the complex physical effects during the cutting process. This paper investigates the fundamental influence of cutting conditions, tool geometry and weld characteristics on the residual stress formation after 5-axis ball nose end milling of Ti-6Al-4V. It is shown experimentally, that the cutting edge radius is the most influencing factor on residual stresses. Furthermore it is shown, that the thermal effects during cutting have a minor influence on the residual stresses due to the properties of titanium and the ball nose end milling process. Finally a basic physical approach is given to explain the effects by considering only the uncut chip volume, which is generating the final surface.
Keywords
- Milling simulation, Residual stresses, Titanium
ASJC Scopus subject areas
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: CIRP Journal of Manufacturing Science and Technology, Vol. 7, No. 4, 21.08.2014, p. 347-360.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Residual stresses formation after re-contouring of welded Ti-6Al-4V parts by means of 5-axis ball nose end milling
AU - Denkena, B.
AU - Nespor, D.
AU - Böß, V.
AU - Köhler, J.
N1 - Funding information: The authors thank the German Research Foundation (DFG) for the financial support within the Collaborative Research Centre 871: Refurbishment of complex capital goods.
PY - 2014/8/21
Y1 - 2014/8/21
N2 - The major step of the process chain for regeneration of damaged components is the removal of excess weld material, called re-contouring. This material removal process influences the surface integrity and therefore the functional performance of components. But today the surface integrity, e.g. residual stresses, cannot be predicted to a satisfying degree due to the complex physical effects during the cutting process. This paper investigates the fundamental influence of cutting conditions, tool geometry and weld characteristics on the residual stress formation after 5-axis ball nose end milling of Ti-6Al-4V. It is shown experimentally, that the cutting edge radius is the most influencing factor on residual stresses. Furthermore it is shown, that the thermal effects during cutting have a minor influence on the residual stresses due to the properties of titanium and the ball nose end milling process. Finally a basic physical approach is given to explain the effects by considering only the uncut chip volume, which is generating the final surface.
AB - The major step of the process chain for regeneration of damaged components is the removal of excess weld material, called re-contouring. This material removal process influences the surface integrity and therefore the functional performance of components. But today the surface integrity, e.g. residual stresses, cannot be predicted to a satisfying degree due to the complex physical effects during the cutting process. This paper investigates the fundamental influence of cutting conditions, tool geometry and weld characteristics on the residual stress formation after 5-axis ball nose end milling of Ti-6Al-4V. It is shown experimentally, that the cutting edge radius is the most influencing factor on residual stresses. Furthermore it is shown, that the thermal effects during cutting have a minor influence on the residual stresses due to the properties of titanium and the ball nose end milling process. Finally a basic physical approach is given to explain the effects by considering only the uncut chip volume, which is generating the final surface.
KW - Milling simulation
KW - Residual stresses
KW - Titanium
UR - http://www.scopus.com/inward/record.url?scp=85027943306&partnerID=8YFLogxK
U2 - 10.1016/j.cirpj.2014.07.001
DO - 10.1016/j.cirpj.2014.07.001
M3 - Article
AN - SCOPUS:85027943306
VL - 7
SP - 347
EP - 360
JO - CIRP Journal of Manufacturing Science and Technology
JF - CIRP Journal of Manufacturing Science and Technology
SN - 1755-5817
IS - 4
ER -