Articole

Porosity of sintered tin bronzes

The paper aimed at quantifying effects of change of raw materials used for tin bronzes (Cu-Sn mechanically pre-alloyed powders compared to Cu-Sn pure components mixture), and of thermal and temporal sintering parameters on sintered products porosity; the relation between

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The influence of Sub-Critical Thermochemical Processing on Fatigue Resistance of 42CrMo4 Steel

The influence of Sub-Critical Thermochemical Processing on Fatigue Resistance of 42CrMo4 Steel, Mihai Cojocaru, Leontin Druga, Daniela Dragomir, U.P.B. Sci. Bull., Series B, Vol. 77, Iss. 2, 2015 ISSN 1454 – 2331 The machine parts, fasteners and many other components require

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The Effect of Ce Added to Carburizing Paste on Phase Composition of Carburized Surface Layers

Mihai Cojocaru, Daniela Dragomir, Leontin Druga, Victor Kuncser and Petre Badica, Trans Tech Publications, Switzerland/Advanced Materials Research Vol 1114 (2015) pp 183-189 Investigations on carburized layers phase composition are usually made by optical microscopy, electron

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The mathematical modelling of 21NiCrMo2 low alloy steel carburising in less common carburising media

Dragomir D, Cojocaru M. O, Drugă L.N, International Journal of Microstructure and Materials Properties (IJMMP), vol.9, no.1, 2014, pp.60-70, Publisher Inderscience Publishers The experimental research aimed at mathematical modelling of the carburising process in less common

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Recent Researches in Metallurgical Engineering – From Extraction to Forming

The Estimation of the Quenching Effects After Carburising Using an Empirical Way Based on Jominy Test Results by Mihai Ovidiu Cojocaru, Niculae Popescu and Leontin Drugă In Book: Recent Researches in Metallurgical Engineering - From Extraction to Forming Edited by Mohammad

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Carburarea la adancimi mari de strat

Druga L., Cojocaru M., Dragomir D., Deep case carburizing process, Metal Russia, Septembrie 2014, pag. 32-34 Optimizarea proceselor de carburare pentru adancimi mari de strat (2 ... 8 mm) reprezinta un domeniu interesant din punct de vedere teoretic si practic – modelarea

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Heat treatments in Romania

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Instalatie de calire a glisierelor pentru ghidajele masinilor unelte

● Austenitizarea glisierelor se realizeaza in cuptorul cu vatra pasitoare, alimentarea se face in ritm de tact automat, glisierele se deplaseaza pas cu pas si ajung apoi in antecamera de racire a cuptorului cu vatra pasitoare unde stationeaza atata timp cat temperatura scade pana

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