Details
| Original language | English |
|---|---|
| Pages (from-to) | 357-362 |
| Number of pages | 6 |
| Journal | Procedia Engineering |
| Volume | 183 |
| Publication status | Published - 28 Apr 2017 |
| Event | 17th International Conference on Sheet Metal, SHEMET 2017 - Palermo, Italy Duration: 10 Apr 2017 → 12 Apr 2017 |
Abstract
The increased use of high and ultra-high strength steel and materials with a high adhesion tendency leads to higher demands regarding the wear resistance of forming tools. A promising approach addressing both challenges is to apply MoS2 dry film lubricant coating systems to the tool surface. These coatings reduce friction and the use of drawing oils and can also be used as an abherent. Once these coatings are exhausted, they can be chemically removed and reapplied. However, the tool life of the coatings cannot be predicted properly, due to their inhomogeneous wear behavior which depends on the forming parameters and differs locally. Moreover, there are carryover effects of MoS2-particles to already ablated areas. Given the unpredictability of the wear of dry film lubricant coatings, it is not possible to plan the recoating cycles appropriately and thus, the potential of these coatings for commercial applications is limited. In this research, the wear behavior of MoS2-layers in deep drawing processes was investigated on a test stand with DP800+Z coil material which ensures realistic load conditions at the draw ring radius. Firstly, the wear pattern was determined and locally different contact pressures were recorded and assigned to respective wear areas. Due to bending effects of the sheet material, there are two major areas of wear on the draw ring radius. During wear tests, the wear-dependent coating thickness during wear initiation was determined by using 3D laser scanning microscopy and the friction force was evaluated.
Keywords
- 3D-Laserscan measurement, Dry film lubricant coatings, wear behavior, wear initiation
ASJC Scopus subject areas
- Engineering(all)
- General Engineering
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In: Procedia Engineering, Vol. 183, 28.04.2017, p. 357-362.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Wear Behavior of MoS2 Lubricant Layers during Sheet Metal Forming
AU - Behrens, Bernd Arno
AU - Maier, Hans Jürgen
AU - Hübner, Sven
AU - Bonk, Christian
AU - Almohallami, Amer
AU - Lummer, Christin
AU - Schein, Patrick
AU - Scheland, Hannes
AU - Micke-Camuz, Moritz
PY - 2017/4/28
Y1 - 2017/4/28
N2 - The increased use of high and ultra-high strength steel and materials with a high adhesion tendency leads to higher demands regarding the wear resistance of forming tools. A promising approach addressing both challenges is to apply MoS2 dry film lubricant coating systems to the tool surface. These coatings reduce friction and the use of drawing oils and can also be used as an abherent. Once these coatings are exhausted, they can be chemically removed and reapplied. However, the tool life of the coatings cannot be predicted properly, due to their inhomogeneous wear behavior which depends on the forming parameters and differs locally. Moreover, there are carryover effects of MoS2-particles to already ablated areas. Given the unpredictability of the wear of dry film lubricant coatings, it is not possible to plan the recoating cycles appropriately and thus, the potential of these coatings for commercial applications is limited. In this research, the wear behavior of MoS2-layers in deep drawing processes was investigated on a test stand with DP800+Z coil material which ensures realistic load conditions at the draw ring radius. Firstly, the wear pattern was determined and locally different contact pressures were recorded and assigned to respective wear areas. Due to bending effects of the sheet material, there are two major areas of wear on the draw ring radius. During wear tests, the wear-dependent coating thickness during wear initiation was determined by using 3D laser scanning microscopy and the friction force was evaluated.
AB - The increased use of high and ultra-high strength steel and materials with a high adhesion tendency leads to higher demands regarding the wear resistance of forming tools. A promising approach addressing both challenges is to apply MoS2 dry film lubricant coating systems to the tool surface. These coatings reduce friction and the use of drawing oils and can also be used as an abherent. Once these coatings are exhausted, they can be chemically removed and reapplied. However, the tool life of the coatings cannot be predicted properly, due to their inhomogeneous wear behavior which depends on the forming parameters and differs locally. Moreover, there are carryover effects of MoS2-particles to already ablated areas. Given the unpredictability of the wear of dry film lubricant coatings, it is not possible to plan the recoating cycles appropriately and thus, the potential of these coatings for commercial applications is limited. In this research, the wear behavior of MoS2-layers in deep drawing processes was investigated on a test stand with DP800+Z coil material which ensures realistic load conditions at the draw ring radius. Firstly, the wear pattern was determined and locally different contact pressures were recorded and assigned to respective wear areas. Due to bending effects of the sheet material, there are two major areas of wear on the draw ring radius. During wear tests, the wear-dependent coating thickness during wear initiation was determined by using 3D laser scanning microscopy and the friction force was evaluated.
KW - 3D-Laserscan measurement
KW - Dry film lubricant coatings
KW - wear behavior
KW - wear initiation
UR - http://www.scopus.com/inward/record.url?scp=85020915891&partnerID=8YFLogxK
U2 - 10.1016/j.proeng.2017.04.052
DO - 10.1016/j.proeng.2017.04.052
M3 - Conference article
AN - SCOPUS:85020915891
VL - 183
SP - 357
EP - 362
JO - Procedia Engineering
JF - Procedia Engineering
SN - 1877-7058
T2 - 17th International Conference on Sheet Metal, SHEMET 2017
Y2 - 10 April 2017 through 12 April 2017
ER -