20.500.12556/DKUM-22648 MOŽNOSTI POVEČANJA TRAJNOSTI UDARNIH PLOŠČ ROTORJA V MLINIH ZA MLETJE PREMOGA Z NAVARJANJEM Possibilities for increasing durability of rotor blades in coal mills using hard facing V Termoelektrarni Trbovlje za proizvodnjo električne energije kot energent uporabljamo rjavi premog, ki ga meljemo v ventilatorskih mlinih. Rotor mlina je premera 2600 mm in ima na obodu nameščenih 10 do 12 udarnih plošč. Njihova obraba predstavlja velike stroške tekočega kot tudi remontnega vzdrževanja. V nalogi sem predstavil materiale udarnih plošč, ki so se uporabljali v preteklosti. Uvajajo se novi materiali za udarne plošče z navarom iz varilne žice. Uporabljenih oz. predstavljenih je več različnih materialov varilne žice za navarjanje. V praksi se uporabljajo trije do štirje materiali, ki so se izkazali za uporabne. V nalogi želim prikazati namen uporabe ustreznih navarov na udarnih ploščah mlinov, oziroma koliko se posledično s takim načinom vzdrževanja zmanjšajo stroški menjave rotorjev zaradi podaljšanja trajnosti dobe trajanja. To generate electricity, in TET, we use brown coal milled with fan mills as an energy source. The rotor of the mill is 2600 mm in diameter and has 10 to 12 cladded plates installed at its periphery. Their wear deamands a high amount of recurring costs as well as the refit maintenance. In thesis, I have presented materials of cladded plates, which were used in the past. New materials for cladded plates with a welding wire are being introduced. Different kinds of materials for surfacing a welding wire are used and presented. In practice, three or four materials that have proven to be useful, are being used. In the thesis, I want to outline the appropriate use of welds on the cladded plates of mills and prove how much do costs of changing the rotors due to their extended life expectancy with this kind of maintenance reduce. udarna plošča obrabna odpornost trdota udarna žilavost mikrostruktura abrazija cladded plate wear resistance hardness impact toughness microstructure abrasion true true false [M. Macerl] Slovenski jezik Angleški jezik Diplomsko delo 2012-04-11 12:00:28 2012-05-22 11:16:21 2022-04-14 11:59:20 2023-12-30 03:28:56 2012 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.178.16:621.791(043.2) 16848150 URN:SI:UM:DK:K6QTH8Y0 UNI_Macerl_Matjaz_2012.pdf UNI_Macerl_Matjaz_2012.pdf 1 E19631A09FD521D963AFFB56619A415A eb4a2f680b10758a226c9f9c0fa93195423145a71878e5e21b707e7e90567542 679533d4-7c06-11eb-bb7a-00155d0001ca 20.500.12556/dkum/90c81a1b-65bd-4027-a28e-a13674ebe4df https://dk.um.si/Dokument.php?lang=slv&id=29794 Fakulteta za strojništvo 0 0 0