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Št. zadetkov: 4
Izdelava in analiza navarov varjenih z rutilno oplaščeno elektrodo pravokotnega prereza
Edvard Bjelajac, Tomaž Vuherer
Doktorska disertacija
Oznake: ročno obločno varjenje;oplaščena elektrode pravokotnega preseka;trdo navarjanje;stopnja razmešanja;doktorske disertacije;
Navarjanje z obločnimi postopki so v praksi pogosto uporabljene metode za površinsko zaščito novih ali degradiranih mehanskih delov, ki so med življenjsko dobo izpostavljeni različnim mehanizmom obrabe. Med njimi ima pomembno mesto navarjanje z oplaščeno elektrodo, ki se zaradi enostavnosti opreme i ...
Leto: 2024 Vir: Fakulteta za strojništvo (UM FS)
Comparison of the mechanical properties of hardfacings made by standard coated stick electrodes and a newly developed rectangular stick electrode
Edvard Bjelajac, Andrej Skumavc, Gorazd Lojen, Mirza Manjgo, Tomaž Vuherer
Izvirni znanstveni članek
Oznake: navarjanje;hitrost redčenja;trdota;udarna žilavost po Charpyju;zaostale napetosti;lomna žilavost;hardfacing;dilution rate;hardness;Charpy impact toughness;residual stress;fracture toughness;
Cladding with a stick electrode is one of the oldest arc processes for adding a deposit on a base material. The process is suitable for outdoor working, but the disadvantages are low productivity and large dilution rates. In this work, a simple solution is proposed, which would enable cladding of a ...
Leto: 2024 Vir: Fakulteta za strojništvo (UM FS)
Simulation and mechanical properties of fine-grained heat-affected zone microstructure in 18CrNiMo7-6 steel
Tomaž Vuherer, Fidan Smaili, Edvard Bjelajac, Mirza Manjgo, Gorazd Lojen
Izvirni znanstveni članek
Oznake: zvarni spoji;mehanika loma;simulacija mikrostrukture;trdota;udarna žilavost;natezne lastnosti;utrujenostna rast razpoke;jeklo 18CrNiMo7-6;weld joint;fine-grained HAZ;simulation of microstructure;hardness;impact toughness;tensile properties;fatigue crack growth;18CrNiMo7-6 steel;
Heat-affected zones (HAZs) in real welds are usually quite narrow, and consequently most standard mechanical tests are difficult or even impossible. Therefore, simulated microstructures are often used for mechanical tests. However, the most often used weld thermal cycle simulator produces only a few ...
Leto: 2022 Vir: Fakulteta za strojništvo (UM FS)
Experimental study of crack propagation through cladded 316L/S355 steel produced by the hot-roll bonding process
Edvard Bjelajac, Andrej Skumavc, Fidan Smaili, Gorazd Lojen, Jožef Predan, Tomaž Vuherer
Izvirni znanstveni članek
Oznake: bimetalne plošče;spajanje z vročim valjanjem;strižna trdnost;natezna trdnost;udarna žilavost;širjenje razpoke;ti;clad plate;hot-roll bonding;shear strength;tensile strength;impact toughness;crack propagation;
A hot-rolled clad plate made of 316L stainless steel and S355 carbon steel was produced in a real industrial environment via GMAW welding, vacuuming, preheating to 1240 °C, and hot-roll bonding on four stand plate mills in nine passes with reduction rates between 20-6% per pass. The clad plates were ...
Leto: 2023 Vir: Fakulteta za strojništvo (UM FS)
Št. zadetkov: 4
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