Texture of surface of coatings obtained using the "Casto-Dyn 8000",torch, after burnishing treatment

• Autorzy: Starosta R.
• Języki publikacji: EN

Abstrakty

EN

The flame sprayed coatings are characterized by porosity, oxide inclusions presence and large real area of surface. In order to obtain adequate surface roughness coatings must be applied finishing. For this purpose, the turning and grinding are used. In the paper a burnishing to finishing flame sprayed coatings was proposed. Burnishing is not used during the processing of thermally sprayed coatings, as is commonly believed that this technology causes damage to coatings. The process of flame sprayed is a technology affordable and easy to implement. It does not require great skill of the operator. This method is not associated with expensive workstation equipment. It may therefore be used with success for the regeneration of machine parts by the crew of vessel engine room. Coatings of Ni-5% Al and Ni-5%Al-15%Al2O3 obtained by powder flame spraying were studied. Torch of "Casto-Dyn 8000" was used. After turning the average value of surface coatings roughness coefficient Ra =2.59 mi m (for Ni- 5%Al) mi m and Ra = 3.1mi m (for composite coating) was obtained. SRMD burnishing tool produced by "Yamato" company was used. Roller burnishing was performer on turning lathe. It was found that the increase in burnishing force and the reduction of burnishing speed and feed rate of less roughness of coatings are obtained. For Ni-5%Al coatings the lowest surface roughness, Ra = 0.3mi m was obtained after burnishing with the following parameters: the force - 1100 N, burnishing speed - 28m/min, feed - 0.08 mm/rev. During burnishing of Ni-5% Al-15% Al2O3 coatings applied force 700 N, Ra = 1.31 mi m was obtained. Greater burnishing force caused coatings damage. Burnishing compared to turning has positive influence on the curve shape of the material ratio. It was found that the parameters Rk and Rpk were reduced.

Słowa kluczowe

EN

flame spraying; burnishing; Ni-Al coating; Ni-Al-Al2O3 coating; torque pump

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2011
• Tom: Vol. 18, No. 3
• Strony: 413--420
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Starosta R.

• Gdynia Maritime University, Department of Marine Maintenance Morska Street 81-87, 81-225 Gdynia, Poland phone[phone], fax [phone],

Bibliografia

• [1] Kung-Hsu, H., Ming-Chang, J., Ming-Der, G., A study on the wear resistance characteristics of pulse electroforming Ni–P alloy coatings as plated, Wear, Vol. 265, pp. 833-844, 2007.
• [2] Bolelli, G., Cannillo, V., Lusvarghi, L., Ricco, S. Mechanical and tribological properties of electrolytic hard chrome and HVOF-sprayed coatings, Surface and Coatings Technology, Vol. 200, pp. 2995 – 3009, 2006.
• [3] DuraSpindle, Increasing performance, Information materials MAN B&W, 2005.
• [4] Piaseczny, L., Technologia naprawy okrętowych silników spalinowych, Wydawnictwo Morskie, Gdańsk 1992.
• [5] Korzyński, M., Nagniatanie ślizgowe, Wydawnictwa Naukowo-Techniczne, Warszawa 2007.
• [6] Korzynski, M., Pacana, A., Cwanek, J., Fatigue strength of chromium coated elements and possibility of its improvement with slide diamond burnishing, Surface and Coatings Technology, Vol. 203, pp. 1670–1676, 2009.
• [7] Przybylski, W., Technologia obróbki nagniataniem, Wydawnictwo Naukowo – Techniczne, Warszawa 1987.
• [8] Dyl, T., Starosta, R., Skoblik, R., The effect of the unit pressure on the NiAl and Ni3Al intermetallic coatings selection parameters after plastic working. Solid State Phenomena, Vol. 165, pp. 19-24, 2010.
• [9] Starosta, R., Flame spraying "ROTO-TECK 80" of Ni-Al and Ni-Al-Al2O3 coatings surface texture after roller burnishing. Journal of KONES Powertrain and Transport. Vol. 17, No. 4, pp. 477-484, 2010.
• [10] Nadasi, E., Nowoczesne metody metalizacji natryskowej, Wydawnictwa Naukowo-Techniczne, Warszawa 1975.
• [11] Starosta, R., Wądołowski, D., Wpływ nagniatania na wybrane własności powłok natryskiwanych metodą ROTO-TECK, Zeszyty Naukowe, Akademia Marynarki Wojennej. Vol. 178A, pp. 275-280, 2009.