Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: pin-on-disk

Sortuj według:

Ogranicz wyniki do:

Investigation of friction and wear behaviours of CuSn10 alloy in vacuum

Küçükömeroglu T., Pürçek G., Saray O., Kara L.

Journal of Achievements in Materials and Manufacturing Engineering

2008

Vol. 30, nr 2

172-176

Purpose: Friction and wear always occur at machine parts which run together. This affects the efficiency of machines negatively. Today, many industrial applications use vacuum conditions. Therefore, it became essential to determine the tribological behaviour of the machine components running under these conditions. In this paper, friction and wear behaviour of CuSn10 alloy which is used commonly in the industry as a bearing material is investigated at vacuum conditions. Design/methodology/approach: A couple formed between commercial CuSn10 alloy and Fe 70 (general construct steel) to simulate widely used bearing applications in the industry is investigated. The results obtained at various bearing surface pressures and different vacuum stages are compared to those obtained at atmospheric conditions. Findings: The test results clearly showed that the coefficient of friction increased in vacuum comparing to the results obtained in atmospheric conditions. However, the wear resistance of the alloy increased in vacuum conditions and the samples showed lower wear rate. Research limitations/implications: The results showed that there are some important differences in friction and wear behaviors of CuSn10 alloy in vacuum and atmospheric conditions. Originality/value: Investigation of friction and wear behaviours of CuSn10 alloy in vacuum were made.

Wpływ atmosfery i temperatury otoczenia węzła tarcia na zużycie stali 45

Witaszek M., Witaszek K.

Zeszyty Naukowe. Transport / Politechnika Śląska

2005

z. 57

443-449

W artykule przedstawiono wyniki badań zużycia próbek wykonanych ze stali 45 nieobrobionej i obrobionej cieplnie. Badania przeprowadzono w układzie typu trzpień - tarcza, na stanowisku T-11. Umożliwia ono regulowanie temperatury otoczenia węzła tarcia i składu atmosfery tego otoczenia. Trzpienie wykonane ze stali 45 współpracowały z tarczami ze stali ŁH15. Nacisk i prędkość były stałe podczas badań. Zużycie trzpieni określano metodą wagową. Na podstawie wyników badań wyznaczono zależność intensywności zużycia próbek od temperatury otoczenia węzła tarcia przy tarciu w atmosferze powietrza i argonu.

In this paper wear tests results of steel grade 45 have been presented. Some of the specimens were heat treated whereas other ones weren't. Tests were carried out on pin -on - disk wear testing machine type T -11, which enabled ambient temperature and atmosphere controlling. Pins, machined from steel grade 45 were run against disks from steel ŁH15. Load and velocity during tests were constant. Mass loss of pins was measured after each run. On the basis of test results, the influence of ambient temperature and atmosphere on wear rate of specimens has been determined.