Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Manuela-Cristina PERJU"'
Autor:
Manuela-Cristina PERJU, Carmen NEJNERU, Catalin Andrei TUGUI, Dumitru Doru BURDUHOS-NERGIS, Dan-Gelu GALUSCA
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 42, Iss 2 (2019)
The ESD method (electro spark deposition) is used to cover through deposition the active parts of machines, working in heavy abrasive wear moist environment as well as in a dry environment. The paper proposes the use ESD method for Fe-C alloys for ob
Externí odkaz:
https://doaj.org/article/57efe21788034e70be9012c12e67d923
Autor:
Manuela-Cristina PERJU, Cristian SAVIN, Costică BEJINARIU, Carmen NEJNERU, Dragoş-Cristian ACHIŢEI
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 40, Iss 3 (2017)
Wastewater piping systems in urban agglomerations or industrial areas have problems with the wear and tear of equipment and water transport pipelines used. The problems are related to hydromechanics wear and corrosion due to the presence of solid par
Externí odkaz:
https://doaj.org/article/499346c3ccf04e929d5940e51a439a7e
Autor:
Dragoș-Cristian ACHIȚEI, Ramona CIMPOEȘU, Manuela-Cristina PERJU, Nicanor CIMPOEȘU, Andrei-Cătălin ȚUGUI
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 40, Iss 3 (2017)
The paper presents an analysis of classical heat treatments, which can be applied to AISI310S steel samples. The influence of these heat treatments was highlighted by micro-hardness measurements – Vickers method, and also the structural analysis ma
Externí odkaz:
https://doaj.org/article/f846dff217df44fda6394b96a6992743
Autor:
Cătălin-Andrei ȚUGUI, Petrică VIZUREANU, Carmen NEJNERU, Manuela-Cristina PERJU, Mihai AXINTE, Simona-Mădălina BĂLŢATU
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 38, Iss 3 (2015)
The properties of metallic materials can be improved by deposition of materials. The coating has a tear strength and better hydro-abrasive corrosion. The thin layer deposition has a thickness of less than 10 micrometers. When speaking about depositio
Externí odkaz:
https://doaj.org/article/815423744e634a32a8d96104ec27dd18
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 36, Iss 1 (2013)
For the study regarding the effect of the polarized grid a prototype plasma nitriding facility was used. A polarized grid was placed inside the working chamber, into the space between the anode and cathode, a negative polarised grid. The sample used
Externí odkaz:
https://doaj.org/article/a10fbf22f4eb4a6d99f3fa7b8a56595e
Autor:
Carmen Nejneru, Ramona Cimpoesu, Petrica Vizureanu, Elena-Luiza Epure, Manuela Cristina Perju, Ștefan-Constantin Lupescu
Publikováno v:
Applied Sciences, Vol 13, Iss 10, p 6021 (2023)
The degradation of a quenching cooling medium is a particularly important technical aspect in the technology of primary and final thermal treatments. This paper studied the effect of the thermal cycles of heating and cooling on a tempering medium typ
Externí odkaz:
https://doaj.org/article/7291ce291e7845a78f53ad2f6def7856
Autor:
Manuela Cristina PERJU, Carmen NEJNERU, Mihai AXINTE, Dumitru Doru BURDUHOS-NERGIS, Traian MIRICA
Publikováno v:
European Journal of Materials Science and Engineering, Vol 4, Iss 3, Pp 148-157 (2019)
Roll stands frames are the most important parts of a mill. This frame supports the work rolls and other devices or mechanisms that ensure lamination precision and mill productivity. The reaction forces created by metal deformation during rolling must
Externí odkaz:
https://doaj.org/article/2702471706b54aa0a24624995853502d
Publikováno v:
European Journal of Materials Science and Engineering, Vol 2, Iss 4, Pp 119-126 (2018)
The submersible pumps are submerged in the fluid that must be pumped, this type of pump is capable to push out large volumes of water. The watertight subassembly of this equipment includes a variable power engine that can be used for various househol
Externí odkaz:
https://doaj.org/article/8adb226970464fe79c14a2f3fef9e5ed
Autor:
Dragos Cristian ACHITEI, Mohd Mustafa Al Bakri ABDULLAH, Mirabela Georgiana MINCIUNĂ, Manuela Cristina PERJU
Publikováno v:
European Journal of Materials Science and Engineering, Vol 2, Iss 4, Pp 133-138 (2017)
The paper shows a study about the structural modifications induced on RUL 1 sample, through classic heat treatments. The initial semi-product provides from a laminated bar. It is applied a annealing primary heat treatments, also and quenching and low
Externí odkaz:
https://doaj.org/article/e46f04d97b884ab3b620bf37c4148508
Autor:
Petrica, Vizureanu, Madalina-Simona, Baltatu, Andrei-Victor, Sandu, Dragos-Cristian, Achitei, Dumitru-Doru, Burduhos-Nergis, Manuela-Cristina, Perju
Publikováno v:
Latest Research on Energy Recovery ISBN: 9781803556093
Latest Research on Energy Recovery
Latest Research on Energy Recovery
The solar furnace works by using the electric energy produced by a photovoltaic system, which converts solar energy, solar radiation, into electric energy. The performances of the solar furnace used in various applications from industry are influence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::844fada2a9b454085be1d777ba0c7f15
https://doi.org/10.5772/intechopen.104847
https://doi.org/10.5772/intechopen.104847
