A5101709826- Metal Alloys Wear and Properties
- Surface Treatment and Coatings
- Advanced machining processes and optimization
- Engineering Diagnostics and Reliability
- Tribology and Wear Analysis
- Engineering Technology and Methodologies
- Belt Conveyor Systems Engineering
- Mechanical and Thermal Properties Analysis
- Non-Destructive Testing Techniques
- Magnetic Bearings and Levitation Dynamics
- Global Energy Security and Policy
- Metal and Thin Film Mechanics
- Welding Techniques and Residual Stresses
- Underground infrastructure and sustainability
- Gear and Bearing Dynamics Analysis
- Cultural Heritage Materials Analysis
- Material Properties and Applications
- Transport Systems and Technology
- Engineering Structural Analysis Methods
- Lubricants and Their Additives
- Environmental Engineering and Cultural Studies
- Engineering and Environmental Studies
- Advanced Welding Techniques Analysis
- Mechanical stress and fatigue analysis
- Mechanical Failure Analysis and Simulation
University of Kragujevac
2021-2022
Military Technical Institute
2012-2019
Numerous phenomena that occur during the process of machine parts’ regeneration have a significant impact on loss their working ability. Therefore, properties surfaces teeth flanks repaired gears were analyzed in this research. The hereditary gear are expressed by interdependence geometric and physical-mechanical-metallurgical parameters created technological operations worn welding/hard-facing. hard-facing was executed with three filler metal types, namely: combination Inox 18/8/6 + EDur...
This paper presents the results of voluminous experimental investigations conducted to analyze influence welding procedure on performance regenerated gears. Cylindrical spur gears were tested, both newly manufactured and regenerated, in two fundamentally different ways: by hard facing (surfacing) with “hard” filler metal (DUR 600-IG) “soft” (EVB2CrMo) subsequent cementation quenching. The regeneration procedures defined executed, while, subsequently, microstructure microhardness hard-faced...
Hard-facing as a type of the coating depositing is increasingly used today. Physical-chemical-metallurgical characteristics contact layers in tribo-mechanical systems depend on operating conditions and under which work surfaces were created. That reason influence processing procedures regime, formation, development wear process elements, being considered ever more. To determine hard-facing technology gears' working surfaces, experimental investigations performed samples hard-faced steel for...
Abstract During the process of regeneration machine parts, certain phenomena occur that have a significant impact on loss their working ability. Hereditary properties are expressed by interdependence geometric and physical-mechanical-metallurgical parameters gear teeth created during technological operations worn hard-facing. The influence type additional material (electrodes combinations) tribological characteristics welded was considered, whereby so-called hard materials were applied....
The turbocharger is among the highest quality assemblies for modern internal combustion engines.Its contribution to engine operation immeasurable -it increases power output of while indirectly reducing fuel consumption.Like all devices, turbochargers require maintenance as they are susceptible failure.Faulty either repaired or replaced with new ones.Repair ensures substantial financial savings.The paper presents consequences damage and process its repair.
U ovom tekstu dat je pregled postojećih metoda regeneracije zupčanika i ožlebljenih delova mašinskih elemenata. prvom delu su dati uzroci karakter eksploatacionih oštećenja, defektacija, metodi ojačanja zupčanika, a u drugom spojeva zavisno od vrste veličine njihovih oštećenja.
The paper deals with the results of testing identical samples regenerated gears cemented working surfaces cogs, put out exploitation because excessive wear and abrasion. Geometric measures, profiles, directions flanks cog radial eccentricity, quality hardness contact cogs are controlled. cross section welded-on layer examined by defectoscopic tests as well microstructure cogs. Finally analyses regeneration efficiency referred to completely new manufacturing.
Diagnostic checking of machine parts and systems is a very important overhaul regeneration operation; based on its results appropriate or repair procedures are carried out. The up-to-date diagnostic methods presented, direct (using technical measurements) as well indirect ones. brief survey their most characteristics, advantages disadvantages given well.
Danas postoji prilično veliki broj različitih konstrukcija uređaja za ispitivanje pužnih prenosnika. To je velika pogodnost, jer ta raznovrsnost omogućava izbor optimalne konstrukcije zahtevane uslove ispitivanja. Za prenosnika svrsishodna primena sa kočnicom (slike 1, 2 i 3) jednostavnih zatvorenim kolom opterećenja predopterećenjem, koje se ostvaruje uvijanjem torzionog vratila (slika 4). Hipoidne globoidne prenosnike najsvrsishodnije ispitivati na uređajima čiji primer prikazan slici 8.
Postojanje velikog broja različitih uređaja za ispitivanje zupčastih prenosnika omogućava izbor optimalne konstrukcije zahtevane uslove ispitivanja. Uređaji sa zatvorenim kolom opterećenja primenjuju se u ispitivanju koje su potrebni veliki obrtni momenti. Ovi uređaji ekonomični samo pri dužim ispitivanjima, kao što ispitivanja veka trajanja prenosnika. Konstrukcija zatvorenim je složenija od kočnicom. U praksi zupčasti prenosnici često remontovani sklopovi. Većina zupčanika koji ugrađuju...
Od uređaja sa kočnicom najčešće su u primeni uređaji električnim kočenjem ponovnim iskorišćavanjem (rekuperacijom) električne energije električnoj mreži. Programirano opterećenje kod se jednostavno ostvaruje hidrauličkog kočenja i još jednostavnije, električnog kočenja, korišćenjem standardnih komandnih aparata. Elektromotorom vrlo je teško ostvariti potrebno opterećenje, pa otvorenim kolom opterećenja primenjuju pri manjim obrtnim momentima ispitivanih prenosnika. Kod ovih pogonska snaga...