Kolja Andreas
Prof. Dr. Kolja Andreas
Profile
Projects
Functional Charakterization of Tool Surfaces
(Third Party Funds Single)In der Kaltmassivumformung kommen vielfach Hartmetalle als Werkzeugwerkstoff zur Anwendung. Aufgrund der hohen Härte der Rohlinge wird die Werkzeuggeometrie durch ein Hartbearbeitungsverfahren, im Wesentlichen Erodieren oder Schleifen erzeugt. Zur Verbesserung des Verschleiß- und Ermüdungsverhaltens wird die Werkzeugoberfläche abschließend durch Polieren feinbearbeitet. Im Rahmen des Projekts wurden die resultierenden Oberflächeneigenschaften sowie deren Einfluss auf das Werkzeugeinsatzverhalten untersucht und anhand geeigneter Kenngrößen charakterisiert. Das Ziel des Projekts war die Ableitung von Empfehlungen für eine standzeitoptimierte Fertigung von Umformwerkzeugen aus Hartmetall. Die Ergebnisse zeigen, dass die Hartbearbeitung das Werkzeugeinsatzverhalten signifikant beeinflusst. So resultiert für eine kombinierte Schleif- und Polierbearbeitung eine höhere Ermüdungsfestigkeit als für eine überlagerte Erodier- und Polierbearbeitung.
Publications
2017
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Influence of the mechanical fatigue progress on the magnetic properties of electrical steel sheets
In: Archives of Electrical Engineering 66 (2017), p. 351-360
ISSN: 1427-4221
DOI: 10.1515/aee-2017-0026 - , , , :
Influence of tribological conditions on cold forging processes
In: Proceedings THE"A" Coatings 2017 - , , , , :
Modification of Tribological Conditions for Influencing the Material Flow in Bulk Forming of Microparts from Sheet Metal
In: AIP Conference Proceedings 1896 2017
DOI: 10.1063/1.5007959 - , , , :
Identification of tribological mechanisms of shot peened steel surfaces for an application in sheet-bulk metal forming
In: Martin Levesque (ed.): Proceedings of the 13th International Conference on Shot Peening 2017 - , , , , , :
Design, Manufacturing and Tribological Performance of Microtextured Bucket Tappets for Friction Reduction in the Valve Train
6th World Tribology Congress (Beijing/China, 17. September 2017 - 22. September 2017)
URL: https://www.archiv.mfk.tf.fau.de?file=pubmfk_5c8294ed55231 - , , , , :
Development and launching of an application-oriented test rig for wear investigations in sheet-bulk metal forming
In: THE"A" Coatings 2017 - , , , , :
Investigation of the tribological behaviour of alloyed hot stamping tools in contact with AlSi coated 22MnB5 - , , , :
Investigation of the Adhesive Wear Behavior of Alloyed and Not Alloyed Hot Stamping Tools in Contact with 22MnB5
In: Steinhoff, K.; Oldenburg, M.; Prakash, B. (Hrsg.): (ed.): Hot Sheet Metal Forming of high-Performance Steel - CHS2, Wissenschaftliche Skripten, 2017 2017 - , , , :
Investigation of Tribological Conditions within Partial Hot Stamping
In: Steinhoff, K.; Oldenburg, M.; Prakash, B. (ed.): Hot Sheet Metal Forming of high-Performance Steel - CHS2 2017 - , , , :
Tribological behavior of Zn coated 22MnB5 in hot stamping
In: Steels in Cars and Trucks 2017 - , , , , , , :
Analysis of tool-sided surface modifications for dry deep drawing of deep drawing steel and aluminum alloys in a model process
In: Dry Metal Forming Open Access Journal 3 (2017), p. 30-40
Open Access: http://elib.suub.uni-bremen.de/edocs/00105725-1.pdf - , , , :
Numerical and experimental investigation of dry deep drawing of aluminum alloys with conventional and coated tool surfaces
In: International Conference on the Technology of Plasticity (ICTP) 2017
DOI: 10.1016/j.proeng.2017.10.989 - , , , :
Analysis of Production Limits in Manufacturing of Micro Coined Structures
In: ASPEN/ASPE 2017 Spring Topical Meeting - Manufacture and Metrology of Structured and Freeform Surfaces for Functional Applications 2017 - , , , , :
Investigation of tribological behaviour of a-C:H coatings for dry deep drawing of aluminium alloys
In: Tribology International (2017)
ISSN: 0301-679X
DOI: 10.1016/j.triboint.2017.05.031
2016
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Local adjustment of surface integrity of forming tools by adaptation of tool making process
In: Procedia CIRP 45 (2016), p. 339-342
ISSN: 2212-8271
DOI: 10.1016/j.procir.2016.02.045 - , :
Strahlbearbeitung von Fließpresswerkzeugen - Integration von Strahloperationen in den Werkzeugherstellungsprozess
In: wt Werkstattstechnik - Online 11/12 (2016), p. 835-840
ISSN: 1436-4980 - , , :
Basic numerical analysis of a “Samanta” based forward extrusion process
In: Advanced Materials Research 1140 (2016), p. 27-34
ISSN: 1022-6680 - , :
Einfluss des Schmierstoffs auf die Werkstückqualität in der Blechmassivumformung
XXXV. Verformungskundliches Kolloquium
In: Bruno Buchmayr (ed.): Tagungsband XXXV. Verformungskundliches Kolloquium 2016 - , , , :
Applicability of blasted blanks for adaption of tribological conditions in sheet-bulk metal forming
In: Procedia CIRP 45 (2016), p. 239-242
ISSN: 2212-8271
DOI: 10.1016/j.procir.2016.02.055 - , , , , , , , , , , , , , , , :
Tribological measures for controlling material flow in sheet-bulk metal forming
In: Production Engineering 10 (2016), p. 459 - 470
ISSN: 0944-6524
DOI: 10.1007/s11740-016-0695-2
URL: https://www.mfk.uni-erlangen.de?file=pubmfk_57ecc7754021d - , , , , , , , , :
Surface modifications for adaption of tribological conditions in sheet-bulk metal forming processes
THE "A" Coatings (Hannover, 31. March 2016 - 1. April 2016)
In: Bobzin, K.; Bouzakis, K.-D.; Denkena, B.; Maier, H.J.; Merklein, M. (ed.): Proceedings THE "A" Coatings, Garbsen: 2016
URL: https://www.archiv.mfk.tf.fau.de/?file=pubmfk_5c6ad2c90633d - , , , , , , :
Tailored modifications of amorphous carbon based coatings for dry deep drawing
In: Dry Metal Forming Open Access Journal 2 (2016), p. 25-39
Open Access: http://nbn-resolving.de/urn:nbn:de:gbv:46-00105203-10 - , , , :
Investigation of the wear behavior for not alloyed and alloyed hot forming tools
In: Wulfsberg, J.P; Fette, M.; Montag, T. (ed.): WGP Congress 2016 2016 - , , , , :
Oberflächenmodifizierung von Presshärtewerkzeugen durch einen drahtbasierten Laserstrahllegierungsprozess
11. Erlanger Workshop Warmblechumformung - , , :
Investigation of surface finishing of carbon based coated tools for dry deep drawing of aluminium alloys
In: IOP Conference Series: Materials Science and Engineering 159 (2016), p. 12022_1-10
ISSN: 1757-8981
DOI: 10.1088/1757-899X/159/1/012022 - , , , :
Investigations on load spectrum and adhesive wear development in hot stamping operations
In: K. Bobzin; K.-D. Bouzakis; B. Denkena; H.J. Maier; M. Merklein (ed.): The "A" Coatings Conference Proceedings 2016 - , , , , :
Investigation of Tribological Behaviour of a-C:H Coatings for Dry Deep Drawing of Aluminium Alloys
The 17th Nordic Symposium on Tribology - NORDTRIB 2016 (Hämeenlinna, 14. June 2016 - 17. June 2016)
In: Abstracts Programme 2016
URL: https://www.archiv.mfk.tf.fau.de?file=pubmfk_5c8f7bff42a36
2015
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Beeinflussung der Werkzeuglebensdauer durch werkzeugseitige Anpassungen
XXXIII. Verformungskundliches Kolloquium
In: Buchmayr, B. (ed.): Tagungsband XXXIII. Verformungskundliches Kolloquium 2015 - :
Influence of surface integrity on the behavior of cold forging tools (Dissertation, 2015)
DOI: 10.25593/978-3-87525-398-6 - :
Einsatz des Hochleistungswerkstoffes Hartmetall in der Umformtechnik - Hartmetall als Werkzeugwerkstoff
In: Konstruktion 5/12 (2015), p. IW5-7
ISSN: 0720-5953 - , , , , :
Analysis of Effectiveness of Locally Adapted Tribological Conditions for Improving Product Quality in Sheet-Bulk Metal Forming
In: Applied Mechanics and Materials 794 (2015), p. 81-88
ISSN: 1660-9336 - , , :
Influence of Tool Surface on Tribological Conditions in Conventional and Dry Sheet Metal Forming
In: International Journal of Precision Engineering and Manufacturing - Green Technology 2 (2015), p. 131-137
ISSN: 2198-0810
DOI: 10.1007/s40684-015-0017-8 - , , , , , , , :
Investigation of Tribological Systems for Dry Deep Drawing by Tailored Surfaces
In: Dry Metal Forming Open Access Journal 1 (2015), p. 42-56
Open Access: http://www.drymetalforming.de/images/pdf/DMFOAJFMT_1_2015_042-056_Merklein.pdf - , , , , , , , :
Development and Evaluation of Tool Sided Surface Modifications for Dry Deep Drawing of Steel and Aluminum Alloys
In: Dry Metal Forming Open Access Journal 1 (2015), p. 113-120
Open Access: http://www.drymetalforming.de/images/DMFOAJFMT_1_2015_121-133.pdf
2014
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Smart FE-based tool design in cold forging
In: Advanced Materials Research 1018 (2014), p. 309-316
ISSN: 1022-6680
DOI: 10.4028/www.scientific.net/AMR.1018.309 - , :
Improvement of surface integrity of cold forging tools by adaption of tool making process
In: Production Engineering 8 (2014), p. 131-141
ISSN: 0944-6524
DOI: 10.1007/s11740-013-0522-y - , :
Influence of surface integrity on the tribological performance of cold forging tools
In: Procedia CIRP 13 (2014), p. 61-66
ISSN: 2212-8271
DOI: 10.1016/j.procir.2014.04.011 - , :
On the tribological influence of coatings in cold forging
11th Int. Conf. THE "A" Coatings in Manufacturing Engineering
In: Bouzakis, K.-D.; Bobzin, K.; Denkena, B.; Merklein, M. (ed.): Proc. 11th Int. Conf. THE "A" Coatings in Manufacturing Engineering 2014 - , , , , , :
Innovative Tribological Systems in Sheet Metal Forming - Revolution in the Press Shop?
11th Int. Conf. THE "A" Coatings in Manufacturing Engineering
In: Bouzakis, K.-D.; Bobzin, K.; Denkena, B.; Merklein, M. (ed.): Proc. 11th Int. Conf. THE "A" Coatings in Manufacturing Engineering 2014 - , , , , , , , , :
Potenziale und Grenzen der Simulation in der Fertigungstechnik
15. RoundTable - Simulating Manufacturing
In: simufact engineering GmbH (ed.): Tagungsband 15. RoundTable - Simulating Manufacturing 2014
2013
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Fatigue Behavior of Cemented Carbide Based Forming Tools
18th Plansee Seminar (Reutte)
In: Sigl, L.; Kestler, H.; Wagner, J (ed.): Proc. 18th Plansee Seminar 2013 - , , , :
Application of cemented carbide based forming tools in cold forging
10th Int. Conf. THE "A" Coatings in Manufacturing Engineering (Aachen)
In: Bouzakis, K.-D.; Bobzin, K.; Denkena, B.; Merklein, M. (ed.): Proc. 10th Int. Conf. THE "A" Coatings in Manufacturing Engineering 2013
2012
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Influence of Grinding on the Surface Properties of Cemented Carbides
In: Key Engineering Materials 504-506 (2012), p. 1353-1358
ISSN: 1013-9826
DOI: 10.4028/www.scientific.net/KEM.504-506.1353 - , , :
Influence of Combined Hard and Fine Machining on the Surface Properties of Cemented Carbides
In: Tribology in Industry 34 (2012), p. 119-127
ISSN: 0354-8996 - , , :
Werkzeugherstellung in der Kaltmassivumformung - Einfluss der Werkzeugoberfläche auf die tribologischen Bedingungen
In: wt Werkstattstechnik - Online 10 (2012), p. 672-677
ISSN: 1436-4980
2011
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Influence of machining process on residual stresses in the surface of cemented carbides
In: Procedia Engineering 19 (2011), p. 252-257
ISSN: 1877-7058
DOI: 10.1016/j.proeng.2011.11.108
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