RESEARCH ON DEGRADATION CORROSIVE ENVIRONMENT OF SOME STEELS USED IN MANUFACTURING MINING EQUIPMENT. MICROSCOPIC ANALYSIS
By those shown in both the previous study and those presented in this paper we intend to deal with an unfavorable aspect, frequently found in surface mining workings of the coal basin of Oltenia. The excavating machines of these coal pits are subjected to difficult working conditions: dust (fine m...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Academica Brancusi
2017-05-01
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| Series: | Fiabilitate şi Durabilitate |
| Subjects: | |
| Online Access: | http://www.utgjiu.ro/rev_mec/mecanica/pdf/2017-01/15_Florin%20CIOFU,%20Alin%20NIOA%C5%A2%C4%82%20-%20RESEARCH%20ON%20DEGRADATION%20CORROSIVE%20ENVIRONMENT%20OF%20SOME%20STEELS%20USED%20IN%20MANUFACTURING%20MINING%20EQUIPMENT.%20MICROSCOPIC%20ANALYSIS.pdf |
| _version_ | 1811313114573963264 |
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| author | Florin CIOFU Alin NIOAŢĂ |
| author_facet | Florin CIOFU Alin NIOAŢĂ |
| author_sort | Florin CIOFU |
| collection | DOAJ |
| description | By those shown in both the previous study and those presented in this paper we intend to deal
with an unfavorable aspect, frequently found in surface mining workings of the coal basin of Oltenia. The
excavating machines of these coal pits are subjected to difficult working conditions: dust (fine mineral particles
with sizes up to 10μm or even less), temperature differences (in summer up to+50oC and in winter to-30oC),
corrosive atmosphere (acid underground waters, sulfates, gases resulting from the extraction of coal - like SOx
generated from calcination sulfides, nitrates), etc ...
In terms of mobility, these machines are designed in such a way to adapt both to relief conditions
(moving horizontally or in an inclined plane) and to larger or restricted spaces of maneuverability. Also they
can move to different working fronts using the march mechanisms and the arms (of excavation ,respectively of
overflowing) are mobile, may rotate both horizontally around the vertical axis of the machine and vertically
around some own axes [1]. |
| first_indexed | 2024-04-13T10:48:24Z |
| format | Article |
| id | doaj.art-d649bb140c874599a592d9a8ca9c7b76 |
| institution | Directory Open Access Journal |
| issn | 1844-640X 1844-640X |
| language | English |
| last_indexed | 2024-04-13T10:48:24Z |
| publishDate | 2017-05-01 |
| publisher | Academica Brancusi |
| record_format | Article |
| series | Fiabilitate şi Durabilitate |
| spelling | doaj.art-d649bb140c874599a592d9a8ca9c7b762022-12-22T02:49:43ZengAcademica BrancusiFiabilitate şi Durabilitate1844-640X1844-640X2017-05-0111996101RESEARCH ON DEGRADATION CORROSIVE ENVIRONMENT OF SOME STEELS USED IN MANUFACTURING MINING EQUIPMENT. MICROSCOPIC ANALYSISFlorin CIOFU0Alin NIOAŢĂ1”Constantin Brâncuşi” University of Targu Jiu”Constantin Brâncuşi” University of Targu JiuBy those shown in both the previous study and those presented in this paper we intend to deal with an unfavorable aspect, frequently found in surface mining workings of the coal basin of Oltenia. The excavating machines of these coal pits are subjected to difficult working conditions: dust (fine mineral particles with sizes up to 10μm or even less), temperature differences (in summer up to+50oC and in winter to-30oC), corrosive atmosphere (acid underground waters, sulfates, gases resulting from the extraction of coal - like SOx generated from calcination sulfides, nitrates), etc ... In terms of mobility, these machines are designed in such a way to adapt both to relief conditions (moving horizontally or in an inclined plane) and to larger or restricted spaces of maneuverability. Also they can move to different working fronts using the march mechanisms and the arms (of excavation ,respectively of overflowing) are mobile, may rotate both horizontally around the vertical axis of the machine and vertically around some own axes [1].http://www.utgjiu.ro/rev_mec/mecanica/pdf/2017-01/15_Florin%20CIOFU,%20Alin%20NIOA%C5%A2%C4%82%20-%20RESEARCH%20ON%20DEGRADATION%20CORROSIVE%20ENVIRONMENT%20OF%20SOME%20STEELS%20USED%20IN%20MANUFACTURING%20MINING%20EQUIPMENT.%20MICROSCOPIC%20ANALYSIS.pdfmetallographicanalysesoptical |
| spellingShingle | Florin CIOFU Alin NIOAŢĂ RESEARCH ON DEGRADATION CORROSIVE ENVIRONMENT OF SOME STEELS USED IN MANUFACTURING MINING EQUIPMENT. MICROSCOPIC ANALYSIS Fiabilitate şi Durabilitate metallographic analyses optical |
| title | RESEARCH ON DEGRADATION CORROSIVE ENVIRONMENT OF SOME STEELS USED IN MANUFACTURING MINING EQUIPMENT. MICROSCOPIC ANALYSIS |
| title_full | RESEARCH ON DEGRADATION CORROSIVE ENVIRONMENT OF SOME STEELS USED IN MANUFACTURING MINING EQUIPMENT. MICROSCOPIC ANALYSIS |
| title_fullStr | RESEARCH ON DEGRADATION CORROSIVE ENVIRONMENT OF SOME STEELS USED IN MANUFACTURING MINING EQUIPMENT. MICROSCOPIC ANALYSIS |
| title_full_unstemmed | RESEARCH ON DEGRADATION CORROSIVE ENVIRONMENT OF SOME STEELS USED IN MANUFACTURING MINING EQUIPMENT. MICROSCOPIC ANALYSIS |
| title_short | RESEARCH ON DEGRADATION CORROSIVE ENVIRONMENT OF SOME STEELS USED IN MANUFACTURING MINING EQUIPMENT. MICROSCOPIC ANALYSIS |
| title_sort | research on degradation corrosive environment of some steels used in manufacturing mining equipment microscopic analysis |
| topic | metallographic analyses optical |
| url | http://www.utgjiu.ro/rev_mec/mecanica/pdf/2017-01/15_Florin%20CIOFU,%20Alin%20NIOA%C5%A2%C4%82%20-%20RESEARCH%20ON%20DEGRADATION%20CORROSIVE%20ENVIRONMENT%20OF%20SOME%20STEELS%20USED%20IN%20MANUFACTURING%20MINING%20EQUIPMENT.%20MICROSCOPIC%20ANALYSIS.pdf |
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