The laser texturing of overcoat piston of combustion engine for enlargement of his resistance on the waste in the conditions of the friction

• Autorzy: Napadłek W.
• Języki publikacji: EN

Abstrakty

EN

The results of investigations laboratory of laser texturing overcoat piston combustion engine in the aim of producing on his surface the containers of oil were introduced in the article. The best parameters of laser processing (the length of the radiation, the thickness of the power, geometrical arrangement) were chosen infirst stage ofaudits on samples from the melt of aluminum, near which the texturing of the sheath real piston of the engine was made. The topography of the surface of the sheath piston after the traditional mechanical processing and after laser texturing was analysed in second stage of comparative audits. The selection of the parameters of the laser processing was realized in the support about got results from the analysis of the topography of surface, microhardness and microstructure. Pulse laser ablative micromachining enables the oil micro trays production on the coat and the hub of the piston made of aluminum alloy such an AlSi12CulNilMg (EN AW-2816). Using a laser beam with power density of q = 0.90 * W6 W/cm2, pulse duration t = 155 ns, repetition frequency f = 5 Hz, the oil micro trays with reproducible geometrical dimensions: diameter = 70-empty set 100 mi m, the depth H less-than or equal to 20 urn, height of micro burr h less-than or equal to 2 mi m , were obtained. Audits showed very profitable and repetition geometrical arrangement of the containers of oil what, about the shape cubic spherical, augurs large hę will impale on the possibility of the farther continuation of audits on the real object - the combustion engine.

Słowa kluczowe

EN

laser ablation; piston; surface layer topography

• 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: 2010
• Tom: Vol. 17, No. 4
• Strony: 361--367
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Napadłek W.

• Military University of Technology, Faculty of Mechanical Engineering Gen. Kaliskiego Street 2, 00-908 Warsaw, Poland tel: [phone],

Bibliografia

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• [8] Burakowski, T., Napadłek, W., Marczak, J., Ablative laser cleaning of constructional materials and machine elements - selected examplest, Materials Science, R. XXVIII, No. 3-4 (157-158), pp. 622-626, 2007.