Frictional characteristics of EN AW-6082 aluminium alloy sheets used in metal forming

• Autorzy: Slota Ján , Kaščák Ľuboš , Lăzărescu Lucian

Identyfikatory

DOI

10.7862/rm.2024.8

Warianty tytułu

PL

Charakterystyka tarciowa blach ze stopu aluminium EN AW-6082 stosowanych w obróbce plastycznej metali

• Języki publikacji: EN

Abstrakty

EN

This article is devoted to testing EN AW-6082 aluminium alloy sheets in friction pair with NC6 (1.2063) tool steel. A special tribometer designed to simulate the friction conditions in sheet metal forming processes was used for friction testing. The research aimed to determine the influence of contact pressure, surface roughness of the tool, and lubrication conditions on the value of the coefficient of friction in the strip drawing test. Three grades of typical petroleum-based lubricants with kinematic viscosities between 21.9 and 97 mm2/s were used in the tests. The surface morphologies of the sheet metal after the friction process were observed using a scanning electron microscope. A tendency for the coefficient of friction to decrease with increasing contact pressure was observed. LHL32 and 75W-85 oils lost their lubricating properties at a certain pressure value and with further increase in pressure, the coefficient of friction value tended to increase. The 10W-40 oil with the highest viscosity reduced the coefficient of friction more intensively than the LHL32 oil.

PL

Artykuł poświęcony jest badaniom tarciowym blach ze stopu aluminium EN AW-6082 w parze ciernej ze stalą narzędziową NC6 (1.2063). Do badań tarcia wykorzystano specjalny tribotester przeznaczony do symulacji warunków tarcia w procesach kształtowania blach. Celem badań było określenie wpływu nacisk kontaktowego, chropowatości powierzchni narzędzia i warunków smarowania na wartość współczynnika tarcia w próbie ciągnienia pasa blachy. Do badań wykorzystano trzy gatunki typowych smarów na bazie ropy naftowej o lepkości kinematycznej od 21,9 do 97 mm2/s. Morfologię powierzchni blach po procesie tarcia obserwowano za pomocą skaningowego mikroskopu elektronowego. Zaobserwowano tendencję do zmniejszania się wartości współczynnika tarcia wraz ze wzrostem nacisku kontaktowego. Oleje LHL32 i 75W-85 przy określonej wartości nacisku kontaktowego traciły swoje właściwości smarne i wraz z dalszym wzrostem nacisku zaobserwowano zwiększanie się wartości współczynnik a tarcia. Olej 10W-40 o najwyższej lepkości kinematycznej zapewnił większe zmniejszenie wartości współczynnik a tarcia niż olej LHL32.

Słowa kluczowe

EN

EN AW-6082-T6; friction; sheet metal forming; strip drawing test

PL

AW-6082-T6; tarcie; kształtowanie blach; test przeciągania pasa blachy

• Wydawca: Oficyna Wydawnicza Politechniki Rzeszowskiej
• Czasopismo: Advances in Mechanical and Materials Engineering
• Rocznik: 2024
• Tom: Vol. 41, nr 1
• Strony: 79--87
• Opis fizyczny: Bibliogr. 32 poz., rys., atb., wykr.

Twórcy

autor

Slota Ján

• The Institute of Technology and Material Engineering, Faculty of Mechanical Engineering, Technical University of Košice, Slovakia

autor

Kaščák Ľuboš

• The Institute of Technology and Material Engineering, Faculty of Mechanical Engineering, Technical University of Košice, Slovakia

autor

Lăzărescu Lucian

• Faculty of Industrial Engineering, Robotics and Production Management , Technical University of Cluj-Napoca, Romania

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).