In order to increase wear resistance investigations of locomotive engine parts on the comparison of different techniques for surface treatment were undertaken and compared with respect to their best fit for purpose. Base of the development was to improve the resistance of cylinder liners against abrasive wear in the region of the upper dead centre as well as of piston ring grooves against wear and deformation. Techniques compared are laser transformation hardening and laser-assisted alloying. During surface characterisation and wear tests alloyed surfaces have shown a better integrity of the surface and slightly smaller abrasion. The break out of Steadite grains observed in the hardened surfaces will increase the capacity of lubricant storage and improve failsafe running functions. This effect makes transformation hardening the preferred technique for cylinder liner treatment. For the piston ring grooves careful analysis has proven the equivalence of the techniques. For reasons of simplicity in production also transformation hardening will be preferred. However, the balance will turn according to the field tests of the components which are currently under appraisal.
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3rd Pacific International Conference on Laser Materials Processing, Micro, Nano and Ultrafast Fabrication
April 16–18, 2008
Beijing, People's Republic of China
ISBN:
978-0-912035-89-5
PROCEEDINGS PAPER
Comparative study of techniques for wear minimisation of engine parts Available to Purchase
Martin Dahmen;
Martin Dahmen
1
Fraunhofer-Institut für Lasertechnik
, Steinbachstraße 15, 52074 Aachen, Germany
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Stefan Kaierle;
Stefan Kaierle
1
Fraunhofer-Institut für Lasertechnik
, Steinbachstraße 15, 52074 Aachen, Germany
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Wu Aiping;
Wu Aiping
2
Beijing Institute of Opto-Electronic Technology
, Beijing, PR China
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Liu Wenjin;
Liu Wenjin
3
TDepartment of Mechanical Engineering, Qinghua University
, Beijing, PR China
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Wang Hequiang
Wang Hequiang
4
China Northern Locomotive & Rolling Stock Industry Corporation
, Beijing February 7, Beijing, PR China
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Published Online:
April 01 2008
Citation
Martin Dahmen, Stefan Kaierle, Wu Aiping, Liu Wenjin, Shen Yi, Wang Hequiang; April 16–18, 2008. "Comparative study of techniques for wear minimisation of engine parts." Proceedings of the 3rd Pacific International Conference on Laser Materials Processing, Micro, Nano and Ultrafast Fabrication. PICALO 2008: 3rd Pacific International Conference on Laser Materials Processing, Micro, Nano and Ultrafast Fabrication. Beijing, People's Republic of China. (pp. pp. 232-237). ASME. https://doi.org/10.2351/1.5057013
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