Influence of load, sliding speed and heat-sink volume on the tribological behaviour of polyoxymethylene (POM) sliding against steel

Siddiqui, M. Shoaib Naseem (avtor), Pogačnik, Aljaž (avtor), Kalin, Mitjan (avtor)

This work focuses on a tribological and contact-temperature investigation of unreinforced polyoxymethylene (POM) sliding against steel (DIN 100Cr6) under a wide range of loads and sliding speeds. We have investigated a wider range than is commonly studied, along with different heat-sink volumes of the steel counter-body (3-fold variation). Four empirical contact-load criteria, i.e., wear-change factor, mechanical load factor, thermal load factor, and critical temperature factor, were introduced to complement the evaluation of the tribological behaviour and the contact temperature. Moreover, these factors are not limited to current materials, but provide general methodological approach. Irrespective of the heat-sink volume, even with an 8-fold increase in the p · v value (0.6–4.8 MPa.m/s), the wear mechanism does not change significantly. This beneficial behaviour is mainly due to the synergistic interplay of the mechanical and thermal loads, which mutually suppress the domination and critical state of a single wear mechanism, either mechanical-based or thermal-based, which was understood through novel empirical factor analyses. Another key parameter for maintaining stable and beneficial tribological performance was the large thermal mass, i.e., the heat-sink volume of all the steel samples that suppressed the commonly observed high-temperature rise under severe contact conditions. Thus, the tribological performance was notably enhanced compared to previous studies under similar conditions, since the heat-sink volume was large enough and the balance between the thermal and mechanical loads was maintained.

• Jezik: Angleški jezik
• Ključne besede: POM, steels, wear, temperature
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2023
• Št. strani: 12 str.
• Številčenje: Vol. 178, pt. A, art. 108029
• PID: 20.500.12556/RUL-142600
• UDK: 539.43:669.14
• ISSN pri članku: 0301-679X
• DOI: 10.1016/j.triboint.2022.108029
• COBISS.SI-ID: 129358083
• Datum objave v RUL: 15.11.2022

Gradivo je del revije

• Naslov: Tribology international
• Skrajšan naslov: Tribol. int.
• Založnik: Butterworth Scientific
• ISSN: 0301-679X
• COBISS.SI-ID: 26558976

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: POM, jekla, obraba, temperatura

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0231
• Naslov: Tribologija