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Optimization of rolling mill oils evaluation using FT-IR spectroscopy
Dissertation (MSc)--University of Pretoria, 2008.
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| Format: | Thesis |
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University of Pretoria
2013
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| _version_ | 1867613589515272192 |
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| access_status_str | Open Access |
| author2 | De Waal, Danita |
| author_browse | De Waal, Danita |
| author_facet | De Waal, Danita |
| collection | Thesis |
| dc_rights_str_mv | © 2004 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc)--University of Pretoria, 2008. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/27225 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:38:33.011Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/27225 Optimization of rolling mill oils evaluation using FT-IR spectroscopy De Waal, Danita upetd@up.ac.za Mogwaneng, Pheladi Junior Rolling oils Vegetable-based rolling oils Lubricants UCTD Dissertation (MSc)--University of Pretoria, 2008. During the cold reduction of steel sheet in a rolling mill, rolling oils are used for lubrication to provide the desired steel surface. Rolling oil formulations consist largely of mineral oils, glycerides and/or synthetic esters, fatty acids, emulsifiers and additives. These oils are generally used as 2-5% emulsions and will be subjected to high temperature and pressure during use. This results in chemical changes within the oil that can affect steel surface cleanliness after annealing. It is advantageous to have rolling oils that are stable but easily removed during annealing and leaving a minimal amount of residues. Thus in the field of rolling mill technology the surface quality of rolled product and stability of rolling oils are critical in the selection of lubricants. Additionally, production cost and environmental impact are also critical in the selection of lubricants. In this study, the performance of vegetable-based rolling oils was investigated by recording the FTIR spectra of the oils using Horizontal Attenuated Total Reflectance, an internal reflection accessory, before and after systematic heat treatment. Evidence was found that the vegetable-based oils degraded on heating and the spectroscopic analysis indicated that this was due to rearrangement of unsaturated components from a cis to a trans configuration. Chemistry unrestricted 2013-09-07T10:58:27Z 2008-08-15 2013-09-07T10:58:27Z 2004-09-06 2008-08-15 2008-08-13 Dissertation Mogwaneng, PJ 2004, Optimization of rolling mill oils evaluation using FT-IR spectroscopy, MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/27225 > G340/ag http://hdl.handle.net/2263/27225 http://upetd.up.ac.za/thesis/available/etd-08132008-103521/ © 2004 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | Rolling oils Vegetable-based rolling oils Lubricants UCTD Optimization of rolling mill oils evaluation using FT-IR spectroscopy |
| title | Optimization of rolling mill oils evaluation using FT-IR spectroscopy |
| title_full | Optimization of rolling mill oils evaluation using FT-IR spectroscopy |
| title_fullStr | Optimization of rolling mill oils evaluation using FT-IR spectroscopy |
| title_full_unstemmed | Optimization of rolling mill oils evaluation using FT-IR spectroscopy |
| title_short | Optimization of rolling mill oils evaluation using FT-IR spectroscopy |
| title_sort | optimization of rolling mill oils evaluation using ft ir spectroscopy |
| topic | Rolling oils Vegetable-based rolling oils Lubricants UCTD |
| url | http://hdl.handle.net/2263/27225 http://upetd.up.ac.za/thesis/available/etd-08132008-103521/ |