Details
| Original language | English |
|---|---|
| Pages (from-to) | 432-443 |
| Number of pages | 12 |
| Journal | Tribology Online |
| Volume | 11 |
| Issue number | 2 |
| Publication status | Published - 30 Apr 2016 |
Abstract
Tools used in hot forging operations are subjected to high wear during processing due to complex load conditions with high temperatures and mechanical loads. The resulting abridged service lifetime of the dies highly restricts the cost-effectiveness of the production process. Several investigations indicate that the condition of the tool topography during several forging cycles affects the formation of wear distinctly. Thus, an enhancement of the topography in order to reduce tribologically caused wear is expected to increase wear resistance. Within this investigation an appropriate surface structure of forging dies is to be defined. For this purpose, efficient production methods like turning, milling and blasting are applied to generate distinguished die surfaces concerning topographical structures. By investigating the worn-out surfaces, the optimal surface structure can be determined, taking into account topography parameters deduced from the Abbott-Firestone graph. A mechanical stabilization of the created topography is necessary due to the high mechanical and thermal loads during hot forging leading to distinctive topography alterations. Thus, plasma duplex treatments were carried out, consisting of plasma nitriding and hard coatings produced by PECVD coating technique. It can be shown, that the created topography of the forging dies is sustainable over high amounts of forging cycles and thus leads to a reduction of wear.
Keywords
- Coating, Die surface, Duplex, Hot forging, Nitriding, PECVD, Surface structuring, Tribology, Wear
ASJC Scopus subject areas
- Materials Science(all)
- Surfaces, Coatings and Films
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In: Tribology Online, Vol. 11, No. 2, 30.04.2016, p. 432-443.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Increasing the Efficiency of Forging Operations Using Adjusted Tribological Surfaces Enhanced by Hard Coatings
AU - Behrens, Bernd Arno
AU - Bouguecha, Anas
AU - Huskic, Adis
AU - Baumer, Markus
AU - Paschke, Hanno
AU - Lippold, Lennard
PY - 2016/4/30
Y1 - 2016/4/30
N2 - Tools used in hot forging operations are subjected to high wear during processing due to complex load conditions with high temperatures and mechanical loads. The resulting abridged service lifetime of the dies highly restricts the cost-effectiveness of the production process. Several investigations indicate that the condition of the tool topography during several forging cycles affects the formation of wear distinctly. Thus, an enhancement of the topography in order to reduce tribologically caused wear is expected to increase wear resistance. Within this investigation an appropriate surface structure of forging dies is to be defined. For this purpose, efficient production methods like turning, milling and blasting are applied to generate distinguished die surfaces concerning topographical structures. By investigating the worn-out surfaces, the optimal surface structure can be determined, taking into account topography parameters deduced from the Abbott-Firestone graph. A mechanical stabilization of the created topography is necessary due to the high mechanical and thermal loads during hot forging leading to distinctive topography alterations. Thus, plasma duplex treatments were carried out, consisting of plasma nitriding and hard coatings produced by PECVD coating technique. It can be shown, that the created topography of the forging dies is sustainable over high amounts of forging cycles and thus leads to a reduction of wear.
AB - Tools used in hot forging operations are subjected to high wear during processing due to complex load conditions with high temperatures and mechanical loads. The resulting abridged service lifetime of the dies highly restricts the cost-effectiveness of the production process. Several investigations indicate that the condition of the tool topography during several forging cycles affects the formation of wear distinctly. Thus, an enhancement of the topography in order to reduce tribologically caused wear is expected to increase wear resistance. Within this investigation an appropriate surface structure of forging dies is to be defined. For this purpose, efficient production methods like turning, milling and blasting are applied to generate distinguished die surfaces concerning topographical structures. By investigating the worn-out surfaces, the optimal surface structure can be determined, taking into account topography parameters deduced from the Abbott-Firestone graph. A mechanical stabilization of the created topography is necessary due to the high mechanical and thermal loads during hot forging leading to distinctive topography alterations. Thus, plasma duplex treatments were carried out, consisting of plasma nitriding and hard coatings produced by PECVD coating technique. It can be shown, that the created topography of the forging dies is sustainable over high amounts of forging cycles and thus leads to a reduction of wear.
KW - Coating
KW - Die surface
KW - Duplex
KW - Hot forging
KW - Nitriding
KW - PECVD
KW - Surface structuring
KW - Tribology
KW - Wear
UR - http://www.scopus.com/inward/record.url?scp=84971476401&partnerID=8YFLogxK
U2 - 10.2474/trol.11.432
DO - 10.2474/trol.11.432
M3 - Article
AN - SCOPUS:84971476401
VL - 11
SP - 432
EP - 443
JO - Tribology Online
JF - Tribology Online
SN - 1881-218X
IS - 2
ER -