diplomsko delo
Matjaž Macerl (Author), Franc Zupanič (Mentor), Ivo Pahole (Co-mentor)

Abstract

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.

Keywords

preiskava materiala;obrabna odpornost;trdota;udarna žilavost;mikrostruktura;abrazija;udarne plošče;navarjanje;mletje premoga;diplomske naloge;

Data

Language: Slovenian
Year of publishing:
Source: Maribor
Typology: 2.11 - Undergraduate Thesis
Organization: UM FS - Faculty of Mechanical Engineering
Publisher: [M. Macerl]
UDC: 620.178.16:621.791(043.2)
COBISS: 16848150 Link will open in a new window
Views: 1534
Downloads: 155
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Other data

Secondary language: English
Secondary title: Possibilities for increasing durability of rotor blades in coal mills using hard facing
Secondary abstract: 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.
Secondary keywords: mills;material testing;wear resistance;hardness;impact toughness;microstructure;abrasion;
URN: URN:SI:UM:
Type (COBISS): Undergraduate thesis
Thesis comment: Univ. v Mariboru, Fak. za strojništvo
Pages: X, 64 f.
Keywords (UDC): applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;engineering;technology in general;inženirstvo;tehnologija na splošno;materials testing;commercial materials;power stations;economics of energy;preiskava materiala;blagoznanstvo;energetske centrale;energetika;applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;engineering;technology in general;inženirstvo;tehnologija na splošno;mechanical engineering in general;nuclear technology;electrical engineering;machinery;strojništvo;mechanical technology in general: processes;tools;machines;equipment;obdelava z deformacijo;obdelava brez odrezovanja;toplotna obdelava;
ID: 1017177