The main aim of this thesis was to carry out tribological measurement and comparison of tribological results for two selected surface treatments. That is why this thesis deals with the tribological testing and comparison of results for zinc coated sheets. Two different types of surface coatings (hot dip galvanized HDG and new inorganic treatment NIT) on deep drawing steel sheet were tested by a tribological test called as strip drawing test on the testing device SOKOL400 under the combinations of feed rates v [mm/sec] and contact pressure p [MPa]. Firstly, different kinds of forces (Fmax, Fh, Favg, Fmin and F) were evaluated for both tested surfaces. Moreover, the friction coefficient ? [1] was computed as well. For better overview of final results, there were finally created 3D color map surface graphs. According to the results, NIT coating revealed a much better tribological behavior than HDG coating under the higher feed rates and especially under the higher contact pressures. However, these data are needed to be verified by more experiments and other kind of testing (with different coatings) is also necessary to be performed.
Anotace v angličtině
The main aim of this thesis was to carry out tribological measurement and comparison of tribological results for two selected surface treatments. That is why this thesis deals with the tribological testing and comparison of results for zinc coated sheets. Two different types of surface coatings (hot dip galvanized HDG and new inorganic treatment NIT) on deep drawing steel sheet were tested by a tribological test called as strip drawing test on the testing device SOKOL400 under the combinations of feed rates v [mm/sec] and contact pressure p [MPa]. Firstly, different kinds of forces (Fmax, Fh, Favg, Fmin and F) were evaluated for both tested surfaces. Moreover, the friction coefficient ? [1] was computed as well. For better overview of final results, there were finally created 3D color map surface graphs. According to the results, NIT coating revealed a much better tribological behavior than HDG coating under the higher feed rates and especially under the higher contact pressures. However, these data are needed to be verified by more experiments and other kind of testing (with different coatings) is also necessary to be performed.
Klíčová slova
Tribology, Surface Treatment, Friction Coefficient, Strip Drawing Test, 3D Color Map Surface Graph
Klíčová slova v angličtině
Tribology, Surface Treatment, Friction Coefficient, Strip Drawing Test, 3D Color Map Surface Graph
Rozsah průvodní práce
67 p. (64 421 characters)
Jazyk
AN
Anotace
The main aim of this thesis was to carry out tribological measurement and comparison of tribological results for two selected surface treatments. That is why this thesis deals with the tribological testing and comparison of results for zinc coated sheets. Two different types of surface coatings (hot dip galvanized HDG and new inorganic treatment NIT) on deep drawing steel sheet were tested by a tribological test called as strip drawing test on the testing device SOKOL400 under the combinations of feed rates v [mm/sec] and contact pressure p [MPa]. Firstly, different kinds of forces (Fmax, Fh, Favg, Fmin and F) were evaluated for both tested surfaces. Moreover, the friction coefficient ? [1] was computed as well. For better overview of final results, there were finally created 3D color map surface graphs. According to the results, NIT coating revealed a much better tribological behavior than HDG coating under the higher feed rates and especially under the higher contact pressures. However, these data are needed to be verified by more experiments and other kind of testing (with different coatings) is also necessary to be performed.
Anotace v angličtině
The main aim of this thesis was to carry out tribological measurement and comparison of tribological results for two selected surface treatments. That is why this thesis deals with the tribological testing and comparison of results for zinc coated sheets. Two different types of surface coatings (hot dip galvanized HDG and new inorganic treatment NIT) on deep drawing steel sheet were tested by a tribological test called as strip drawing test on the testing device SOKOL400 under the combinations of feed rates v [mm/sec] and contact pressure p [MPa]. Firstly, different kinds of forces (Fmax, Fh, Favg, Fmin and F) were evaluated for both tested surfaces. Moreover, the friction coefficient ? [1] was computed as well. For better overview of final results, there were finally created 3D color map surface graphs. According to the results, NIT coating revealed a much better tribological behavior than HDG coating under the higher feed rates and especially under the higher contact pressures. However, these data are needed to be verified by more experiments and other kind of testing (with different coatings) is also necessary to be performed.
Klíčová slova
Tribology, Surface Treatment, Friction Coefficient, Strip Drawing Test, 3D Color Map Surface Graph
Klíčová slova v angličtině
Tribology, Surface Treatment, Friction Coefficient, Strip Drawing Test, 3D Color Map Surface Graph
Zásady pro vypracování
Basic types of protective coatings for sheets designed for drawing stampings.
Tribology in the metal forming processes.Importance of friction at metal forming. Overview of tests used for evaluation tribological properties of sheets.
Experimental determination of the surface treatment influence on the friction coefficient in dependence on the technological parameters (feed rate, magnitude of contact pressure) by the strip drawing test.
Evaluation of the experiment. Creation of 3D surface color maps.
Conclusion and recommendations for further research.
Zásady pro vypracování
Basic types of protective coatings for sheets designed for drawing stampings.
Tribology in the metal forming processes.Importance of friction at metal forming. Overview of tests used for evaluation tribological properties of sheets.
Experimental determination of the surface treatment influence on the friction coefficient in dependence on the technological parameters (feed rate, magnitude of contact pressure) by the strip drawing test.
Evaluation of the experiment. Creation of 3D surface color maps.
Conclusion and recommendations for further research.
Seznam doporučené literatury
[1] TOTTEN, G.E. ed. Handbook of Lubrication and Tribology: Volume I - Application and Maintenance. 2nd ed. Boca Raton: CRC Press, 2006, p. 1159. ISBN 978-0-8493-2095-8.
[2] STACHOWIAK, G.W., BATCHELOR, A.W. Engineering tribology. 4thed. Oxford: Butterworth-Heinemann, 2014. p. 884. ISBN 978-0-123-9-70473.
[3] MANG, T., DRESEL, W. Lubricants and Lubrication.2nd ed. Weinheim: WILEY-VCH Verlag, 2007. p. 894. ISBN: 978-3-527-31497-3.
[4] TRACTON, A.A. Coating materials and surface coatings. London:Taylor & Francis Group, 2007. 464 s.ISBN 1-4200-4404-4
[5] DAVIES, G. Materials for Automobile Bodies. Oxford: Butterworth-Heinemann, 2003. p. 277. ISBN 0-7506-5692-1.
Seznam doporučené literatury
[1] TOTTEN, G.E. ed. Handbook of Lubrication and Tribology: Volume I - Application and Maintenance. 2nd ed. Boca Raton: CRC Press, 2006, p. 1159. ISBN 978-0-8493-2095-8.
[2] STACHOWIAK, G.W., BATCHELOR, A.W. Engineering tribology. 4thed. Oxford: Butterworth-Heinemann, 2014. p. 884. ISBN 978-0-123-9-70473.
[3] MANG, T., DRESEL, W. Lubricants and Lubrication.2nd ed. Weinheim: WILEY-VCH Verlag, 2007. p. 894. ISBN: 978-3-527-31497-3.
[4] TRACTON, A.A. Coating materials and surface coatings. London:Taylor & Francis Group, 2007. 464 s.ISBN 1-4200-4404-4
[5] DAVIES, G. Materials for Automobile Bodies. Oxford: Butterworth-Heinemann, 2003. p. 277. ISBN 0-7506-5692-1.
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grafy, tabulky
Převzato z knihovny
Ano
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