Naslov
The influence of parameters of thermochemical processing on properties of steel 20MnCr5

Autori
Opačak, Ivan ; Marušić, Luka ; Marušić, Vlatko ; Marić, Dejan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of 7th International Scientific and Expert Conference TEAM 2015 / Sedmak, Aleksandar - Beograd : Mašinski fakultet Univerziteta u Beogradu, 2015, 622-625

ISBN
9788670838772

Skup
7th International Scientific and Expert Conference TEAM 2015

Mjesto i datum
Beograd, Srbija, 15.10.2015. - 16.10.2015

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
gear pump ; cementation ; fracture surface ; structure ; hardness

Sažetak
Gear pumps for plastic injection are exposed to the effect of elevated pressure and temperature. In one such pump there has been frequent downtime due to breakage of the driven gear. Gears which were installed as standard spare parts had stood out in operation for three months. On a sample of a broken gear were conducted metallographic examinations and hardness control on cross section. Surface of the fracture was examined. Conclusion was that it was high quench hardening of a steel of which a part is made, the most likely cause of the fracture of a standard gear. In order to extend the useful life, two test gear are made from steel for cementation 20MnCr5. By applying the appropriate parameters of thermal chemical treatment useful life of the gear is significantly extended. Test gears have worked for nine months after installation.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA