Boundary conditions analysis of the possible use of bushings made from copper composite materials for a towing vehicle’s chassis

• Authors: T. Roik , O. Gavrish , I. Vitsiuk , O. Khmiliarchuk

Abstracts

EN

The paper analyzes the possible boundary conditions for the application of new type of bushings in the vehicle’s chassis. The bushings have been manufactured from the copper-based antifriction composite material alloyed by nickel and molybdenum, with the addition of CaF2 as a solid lubricant (DN5M3KF9). The structure and tribotechnical properties at heavy loaded reversing friction (the temperature of 400-6000С and pressure up to 6.0 MPa in air) have been examined. The study focuses on the distribution of CaF2 in the composite with a Cu–Ni–Mo matrix, its role in self-lubrication of the material, and the behavior of CaF2 in the friction area under extreme operating conditions. It was shown that the solid lubricant is evenly distributed over the contact surfaces as it piles up over the entire friction area during heavy loaded reversing friction. It is established that the tribofilms formed in the presence of the CaF2 solid lubricant provide high wear resistance. Tribological properties allow for extending the application boundaries of the new bushings based on copper in the vehicle chassis for towing artillery guns.

Keywords

EN

bearing bushing; copper; composite; solid lubricant; technology; friction film; wear resistance; towing vehicle’s chassis

• Publisher: Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
• Journal: Scientific Journal of the Military University of Land Forces
• Year: 2018
• Volume: 50
• Issue: 1(187)
• Pages: 140-149

Dates

published

2018

Contributors

author

T. Roik

• Publishing Printing Institute, National Technical University of Ukraine, Ukraine

author

O. Gavrish

• Management and Marketing Department, National Technical University of Ukraine, Ukraine

author

I. Vitsiuk

• Publishing Printing Institute, National Technical University of Ukraine, Ukraine

author

O. Khmiliarchuk

• Publishing Printing Institute, National Technical University of Ukraine, Ukraine

References

• Gavrish A. P., Melnik O. A., Roik T. A., G. Askerov M., Gavrish O. A.,”New finishing technologies of composite sliding bearings for heavy-duty exploitation conditions”: Monograph, NTUU “KPI”, Kyiv (2012), 196 p., (in Ukrainian).
• Jianxin D. and Tongkun C., “Self-lubricant mechanisms via the in situ formed tribofilm of sintered ceramics with CaF2 additions when sliding against hardened steel”, J. Refract. Met. Hard Mater., 25, No. 2, (2007), pp. 189-197, (in English).
• Kaczmar J.W., K. Pietrzak, W. Wlosinski, The production and application of metal matrix composite materials,[in:] “Journal of Materials Processing Technology, Elsevier Science”, Volume 106, Issues 1-6, 2000, pp. 58-67, (in English).
• Konopka K., Roik T. A., Gavrish A. P., et al., Effect of CaF2 surface layers on the friction behavior of copper-based composite [in:] “Powder Metallurgy and Metal Ceramics”, Vol. 51, No. 5-6, (2012), pp. 363-367, (in English).
• Roik T.A., Gavrish A.P., Kyrychok P.O., et al., Composite Bearing Material, Ukrainian Patent No. 60521, IPC (2009), C22C9/02, Bulletin No. 12, Publ. June 25 (2011), (in Ukrainian).
• Sawicki V. Ya. “Fundamentals and applications the theory of the complex tribosys-tems' forecasting”, Monograph, Penza, PAII, (2005), 326 p., (in Russian).
• Wejrzanowski T., Computer program Micrometer, Mater. [in:] “Sci”, No. 23, (2005), pp. 28-34, (in English).

Identifiers

DOI

10.5604/01.3001.0011.7368

Biblioteka Nauki

30147155