Burnishing treatment of the faying surface of the pipe flange

• Autorzy: Starosta W.

Identyfikatory

DOI

10.5604/01.3001.0010.3151

• Języki publikacji: EN

Abstrakty

EN

On ships for connecting pipes in seawater installations, fire and other installations and for joining pipes to fittings or receivers, flange-type couplings are often used. It is important to ensure tightness between pipe flanges (ASME). If the system pressure does not exceed 1.6 MPa, “open” flange packing using flat gasket rings is used. Rubber, textolite, polyvinyl chloride or metals and alloys with good plastic properties (e.g. aluminum, copper, Monel alloy, Armco iron) can be used as a sealant material (depending on pressure in installation). The tightness of the joint determines the quality (geometric structure) of the surface of the flange at the contact point with the gasket. Reduced roughness ensures even distribution of surface mounting pressures on flange joint gasket. This article deals with the assessment of the use of burnishing as a finishing treatment for flange faces and the selection of rolling parameters. Samples used for the tests were made of S235J2 carbon steel. Burnishing treatment was done with the SKUV20 tool. The working element of the tool was in the shape of a roller. Burning was performed using the following parameters: the burnishing force (Fn) – 600 N, 800 N and 1000 N; Feed rate (f): 0.08 mm/rev, 0.13 mm/rev, 0.24 mm/rev; the speed of burnishing (vn) – for a diameter of 55 mm – was 45 m/min, 65 m/min, 78 m/min. The research was carried out on the basis of trivalent plan Hartley. As the output variables (dependent variables), the roughness reduction index (KRa) and the (Su) were adopted. Based on the multiple regression analysis, it was found that the greatest impact on reducing roughness and surface hardening of burnished material has burnishing force. The dependence between dependent variables and Fn is proportional. The effect of the burnishing speed (vn) on the values of KRA and Su parameters is statistically insignificant. Machining of the active surface of the pipe flanges should be carried out with a burnishing force of 1 kN, a feed rate of 0.08 mm/rev and a burnishing speed of 45 m/min.

Słowa kluczowe

EN

burnishing; pipe flange; flange face; roughness; multiple regression

• 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: 2017
• Tom: Vol. 24, No. 4
• Strony: 297--303
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Starosta W.

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

Bibliografia

• [1] Bartnicki, M., Dobór parametrów rolkowania powierzchni czołowej kołnierza rurowego, Akademia Morska w Gdyni, praca niepublikowana, Gdynia 2016.
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• [3] Charchalis, A. Starosta, R., Effect of finishing on the corrosion properties of flame sprayed Ni-5%Al and Ni-5%Al-Al2O3 coatings, Journal of KONES Powertrain and Transport, Vol. 21, No. 4, pp. 29-36, 2014.
• [4] Charchalis, A., Starosta, R.,. Labuda, W,. Ocena wpływu nagniatania na zmiany właściwości powierzchni stali stosowanej na wały pomp okrętowych, Inżynieria Materiałowa, Vol. 32, No. 4, pp. 363-367, 2011.
• [5] Dyl, T., Starosta, R., Wstępna analiza możliwości zastosowania powłok stopowych Ni-Al na złącza kołnierzowe rurociągów okrętowych, Rudy i Metale Nieżelazne, Vol. 55, No. 11, pp. 784-789, 2010.
• [6] El-Taweel, T. A., El-Axir, M. H., Analysis and optimization of the ball burnishing process through the Taguchi technique, International Journal of Advanced Manufacturing Techno-logy, Vol. 41, Iss. 3-4, pp. 301-310, 2009.
• [7] El-Tayeb, N. S. M., Low, K. O., Brevern, P. V., On the surface and tribological characte-ristics of burnished cylindrical Al-6061, Tribology International, Vol. 42, pp. 320-326, 2009.
• [8] Napiórkowski, J., Drożyner, P., Mikołajczak, P., Rychlik, A., Szczyglak, P., Ligier, K., Podstawy budowy i eksploatacji pojazdów i maszyn, Wyd. EXPOL, Olsztyn 2013.
• [9] Przepisy klasyfikacji i budowy małych statków morskich. Część VI urządzenia maszynowe i instalacje rurociągów, Wyd. Polskiego Rejestru Statków, Gdańsk 2016.
• [10] Stalin John M.R., Vinayagam, B. K., Optimization of ball burnishing process on tool steel (T215Cr12) in CNC machining centre using response surface methodology, Arabian Journal for Science and Engineering, Vol. 36, Iss. 7, pp. 1407-1422, 2011.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).