The effect of the drawing die radius in the bending under tension test on the frictional behaviour of AISI 430 steel and AW-1100 aluminium alloy sheets

• Autorzy: Oliveir Eduarda Soares , Damasceno Juliana Rodrigues , Neto Almir Silva , Amaral Erriston Campos , Gonçalves Karina Aparecida Martins Barcelos , Luiz Valmir Dias

Identyfikatory

DOI

10.7862/rm.2024.16

Warianty tytułu

PL

Wpływ promienia matrycy ciągowej w próbie zginania z rozciąganiem na zachowanie tarciowe blach ze stali AISI 430 i stopu aluminium AW-1100

• Języki publikacji: EN

Abstrakty

EN

Friction is an unfavourable phenomenon in sheet metal forming processes because it increases the forming force, reduces the surface quality of the drawpieces and affects the increased wear of the forming tools. This article presents the results of experimental studies on friction occurring due to the drawing die radius. The test materials used were 0.8-mm-thick strip samples made of AISI 430 steel and AW-1100 aluminium alloy sheets. A special bending under tension friction-test simulator was used to carry out the tests. Countersamples (pins) with different radii in the range of 1.5 mm to 13.5 mm were used. The tests were carried out at room temperature under mineral-based oil lubrication conditions. The friction tests were supplemented by determining the hardness and measuring the surface roughness (parameters Ra, Rq and Rt) of the samples. Based on the results, it was found that the coefficient of friction increased with a decrease in the bending pin radius, however, this behaviour changed above a critical radius (4.5 mm), after which the coefficient of friction increased with an increase in the pin radius. Furthermore, the AW-1100 aluminium alloy strip had a higher coefficient of friction than the AISI 430 steel strip.

PL

Tarcie jest niekorzystnym zjawiskiem w procesach kształtowania blach, ponieważ zwiększa wartość siły kształtowania, obniża jakość powierzchni wytłoczek i wpływa na zwiększone zużycie narzędzi kształtujących. W niniejszym artykule przedstawiono wyniki badań eksperymentalnych tarcia występującego na promieniu matrycy ciągowej. Materiałami testowymi były próbki w postaci taśm o grubości 0,8 mm wykonane ze stali AISI 430 oraz blachy ze stopu aluminium AW-1100. Do przeprowadzenia testów wykorzystano specjalny symulator testu tarcia zginania z rozciąganiem. Zastosowano przeciwpróbki (sworznie) o różnych promieniach w zakresie od 1,5 mm do 13,5 mm. Testy przeprowadzono w temperaturze pokojowej w warunkach smarowania olejem mineralnym. Testy tarcia uzupełniono o określenie twardości i pomiar parametrów chropowatości powierzchni próbek (Ra, Rq i Rt). Na podstawie wyników stwierdzono, że współczynnik tarcia zwiększał się wraz ze zmniejszaniem się promienia sworznia gnącego, jednak zachowanie to uległo zmianie po osiągnięciu krytycznego promienia (4,5 mm), po którym współczynnik tarcia zwiększał się wraz ze wzrostem promienia sworznia. Taśma ze stopu aluminium AW-1100 charakteryzowała się wyższym współczynnikiem tarcia niż taśma ze stali AISI 430.

Słowa kluczowe

EN

AW-1100 aluminium alloy; AISI 430 steel; coefficient of friction; bending under tension test; sheet metal forming

PL

stop aluminium AW-1100; stal AISI 430; współczynnik tarcia; test zginania z rozciąganiem; kształtowanie blach

• Wydawca: Oficyna Wydawnicza Politechniki Rzeszowskiej
• Czasopismo: Advances in Mechanical and Materials Engineering
• Rocznik: 2024
• Tom: Vol. 41, nr 1
• Strony: 183--193
• Opis fizyczny: Bibliogr. 38 poz., rys., tab., wykr.

Twórcy

autor

Oliveir Eduarda Soares

• Department of Metallurgy and Chemistry, Centro Federal de Educação Tecnológica de Minas Gerais, Brazil

• https://orcid.org/0009-0007-3363-0438

autor

Damasceno Juliana Rodrigues

• Department of Metallurgy and Chemistry, Centro Federal de Educação Tecnológica de Minas Gerais, Brazil

• https://orcid.org/0009-0003-7065-3939

autor

Neto Almir Silva

• Department of Metallurgy and Chemistry, Centro Federal de Educação Tecnológica de Minas Gerais, Brazil

• https://orcid.org/0000-0001-8559-4474

autor

Amaral Erriston Campos

• Department of Metallurgy and Chemistry, Centro Federal de Educação Tecnológica de Minas Gerais, Brazil

• https://orcid.org/0000-0002-3167-1849

autor

Gonçalves Karina Aparecida Martins Barcelos

• Department of Metallurgy and Chemistry, Centro Federal de Educação Tecnológica de Minas Gerais, Brazil

• https://orcid.org/0000-0001-7013-7617

autor

Luiz Valmir Dias

• Department of Metallurgy and Chemistry, Centro Federal de Educação Tecnológica de Minas Gerais, Brazil

• https://orcid.org/0000-0001-8078-587X

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2026).