http://arthra.ugal.ro/handle/20.500.14043/25852 2026-04-06T20:33:20Z 2026-04-06T20:33:20Z Tudor, Beatrice Ciocan, Anișoara http://arthra.ugal.ro/handle/20.500.14043/25863 2020-09-03T13:27:51Z 2015-01-01T00:00:00Z

Noise Levels in Workplaces of Cold Rolling Mill Plant Tudor, Beatrice; Ciocan, Anișoara The excessive noise exposure is one of numerous physical hazards present in the steel industry. Considerable noise develops the steel strips rolling process. In this study are presented and discussed the noise levels at different working areas of a cold rolling mill plant. The average of annual values of noise levels is given. The annual overall values of equivalent sound levels were calculated. These are discussed in relation with the noise exposure level normalized to a normal 8hr working day allowed by standards. The results revealed that workers at numerous roll milling plant areas are exposed to noise levels higher than 87 dB(A) 8 - hour standard. As a result, at the end of the paper some specific measures to diminish noise levels are proposed. The Annals of "Dunarea de Jos" University of Galati Fascicle IX Metallurgy and Materials Science No. 4 - 2015, ISSN 1453 – 083X

2015-01-01T00:00:00Z Vasilescu, Elisabeta Vasilescu, Vlad Gabriel http://arthra.ugal.ro/handle/20.500.14043/25862 2020-09-03T13:27:51Z 2015-01-01T00:00:00Z

Research on Chemical Deposition of Silver with Antibacterial Role in Implantology Vasilescu, Elisabeta; Vasilescu, Vlad Gabriel The paper presents a synthesis of the laboratory research on the conditions of achieving chemical deposition of silver on oral implants made of Ti base alloy (bioalloy Ti10Zr). There were used several chemical deposition regimes in which were modified deposition parameters (temperature, stirring time) for two types of implants (different screw thread geometry). Study of the influence of deposition conditions was performed through analysis at scanning electron microscope (SEM) with EDX analyzer. The results revealed the presence of silver, microdispersed particles with morphologies and degrees of dispersion dependent on the factors and technological conditions of obtaining the chemical deposition. The Annals of "Dunarea de Jos" University of Galati Fascicle IX Metallurgy and Materials Science No. 4 - 2015, ISSN 1453 – 083X

2015-01-01T00:00:00Z Achiței, Dragoș Cristian Minciună, Mirabela Georgiana Vizureanu, Petrică http://arthra.ugal.ro/handle/20.500.14043/25861 2020-09-03T13:27:51Z 2015-01-01T00:00:00Z

The Chemical and Metallurgical Analysis of Cooper-Based Shape Memory Alloys Achiței, Dragoș Cristian; Minciună, Mirabela Georgiana; Vizureanu, Petrică The paper presents some aspects on the thermo-mechanical fatigue of shape memory alloy, a documentary synthesis of their industrial applications and chemical aspects concerning the use of these alloys in biomedical applications The Annals of "Dunarea de Jos" University of Galati Fascicle IX Metallurgy and Materials Science No. 4 - 2015, ISSN 1453 – 083X

2015-01-01T00:00:00Z Ciocan, Anișoara http://arthra.ugal.ro/handle/20.500.14043/25860 2020-09-03T13:27:51Z 2015-01-01T00:00:00Z

Emissions of Hydrochloric Acid Vapors Generated by Pickling Process from Cold Rolling Mill of Steel Strips Ciocan, Anișoara The most important pollutant emitted in the sector of pickling within a cold strip mill in an integrated steel mill are the hydrochloric acid vapors. This work presents the chemical reactions between the hydrochloric acid and iron oxides layers formed on the surface of the steel strip after the hot rolling process and it analyzes different areas of the pickling line as generators of acid vapors. The measurement values of hydrochloric acid vapors concentrations in the working atmosphere are correlated with the operational regimes and with occupational exposure limit values according to national legislation. Finally, solutions that can be applied to reduce emissions of hydrochloric acid vapor in the sector of analysis are presented. The Annals of "Dunarea de Jos" University of Galati Fascicle IX Metallurgy and Materials Science No. 4 - 2015, ISSN 1453 – 083X

2015-01-01T00:00:00Z