Characterization of Submicron Oil Mist Particles Generated by Metal Machining Processes
Abstract The number size distributions of submicron oil mist particles generated by three industrial metal (steel) machining processes—lathe machining, cutting, and grinding—were measured using an electrical mobility analyzer and an optical particle spectrometer. The measured number concentration of...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Springer
2020-04-01
|
| Series: | Aerosol and Air Quality Research |
| Subjects: | |
| Online Access: | https://doi.org/10.4209/aaqr.2019.11.0607 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1823862868761640960 |
|---|---|
| author | Moriaki Iwasaki Kojiro Hirai Kanta Fukumori Hidenori Higashi Yayoi Inomata Takafumi Seto |
| author_facet | Moriaki Iwasaki Kojiro Hirai Kanta Fukumori Hidenori Higashi Yayoi Inomata Takafumi Seto |
| author_sort | Moriaki Iwasaki |
| collection | DOAJ |
| description | Abstract The number size distributions of submicron oil mist particles generated by three industrial metal (steel) machining processes—lathe machining, cutting, and grinding—were measured using an electrical mobility analyzer and an optical particle spectrometer. The measured number concentration of ultrafine particles (UFP; ~30 nm diameter) reached 107 particles cm−3 during each machining process. The condensation of thermally evaporated oil vapor was considered to be a major route of ultrafine particle generation during lathe machining and grinding, which used an oil-in-water emulsion and an insoluble lubricant oil, respectively. Cutting, which did not use lubricant oil, also produced a steep increase in the number concentration of UFP; these particles may have formed from residual oil-in-water emulsion on the surface of the workpiece after lathe machining. A simplified numerical simulation was used to quantify the particles arising from machining and leakage when the apparatus was opened. Although local ventilation effectively reduced the concentration of the oil mist in the apparatus and prevented the diffusion of this substance when the apparatus door was opened, leakage was observed when the workpieces were exchanged; this leakage was attributed to entrained particles on the workpieces. Hence, countermeasures to prevent entrained oil mist are necessary to improve the air quality in working environments. |
| format | Article |
| id | doaj-art-0f039b1021a14b2890fe82e836e2deb7 |
| institution | Kabale University |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2020-04-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-0f039b1021a14b2890fe82e836e2deb72025-02-09T12:18:55ZengSpringerAerosol and Air Quality Research1680-85842071-14092020-04-012061469147910.4209/aaqr.2019.11.0607Characterization of Submicron Oil Mist Particles Generated by Metal Machining ProcessesMoriaki Iwasaki0Kojiro Hirai1Kanta Fukumori2Hidenori Higashi3Yayoi Inomata4Takafumi Seto5Kanazawa UniversityKanazawa UniversitySanki Engineering Co., Ltd.Kanazawa UniversityKanazawa UniversityKanazawa UniversityAbstract The number size distributions of submicron oil mist particles generated by three industrial metal (steel) machining processes—lathe machining, cutting, and grinding—were measured using an electrical mobility analyzer and an optical particle spectrometer. The measured number concentration of ultrafine particles (UFP; ~30 nm diameter) reached 107 particles cm−3 during each machining process. The condensation of thermally evaporated oil vapor was considered to be a major route of ultrafine particle generation during lathe machining and grinding, which used an oil-in-water emulsion and an insoluble lubricant oil, respectively. Cutting, which did not use lubricant oil, also produced a steep increase in the number concentration of UFP; these particles may have formed from residual oil-in-water emulsion on the surface of the workpiece after lathe machining. A simplified numerical simulation was used to quantify the particles arising from machining and leakage when the apparatus was opened. Although local ventilation effectively reduced the concentration of the oil mist in the apparatus and prevented the diffusion of this substance when the apparatus door was opened, leakage was observed when the workpieces were exchanged; this leakage was attributed to entrained particles on the workpieces. Hence, countermeasures to prevent entrained oil mist are necessary to improve the air quality in working environments.https://doi.org/10.4209/aaqr.2019.11.0607Oil mistUltrafine particlesFine particlesWorkspace air quality |
| spellingShingle | Moriaki Iwasaki Kojiro Hirai Kanta Fukumori Hidenori Higashi Yayoi Inomata Takafumi Seto Characterization of Submicron Oil Mist Particles Generated by Metal Machining Processes Aerosol and Air Quality Research Oil mist Ultrafine particles Fine particles Workspace air quality |
| title | Characterization of Submicron Oil Mist Particles Generated by Metal Machining Processes |
| title_full | Characterization of Submicron Oil Mist Particles Generated by Metal Machining Processes |
| title_fullStr | Characterization of Submicron Oil Mist Particles Generated by Metal Machining Processes |
| title_full_unstemmed | Characterization of Submicron Oil Mist Particles Generated by Metal Machining Processes |
| title_short | Characterization of Submicron Oil Mist Particles Generated by Metal Machining Processes |
| title_sort | characterization of submicron oil mist particles generated by metal machining processes |
| topic | Oil mist Ultrafine particles Fine particles Workspace air quality |
| url | https://doi.org/10.4209/aaqr.2019.11.0607 |
| work_keys_str_mv | AT moriakiiwasaki characterizationofsubmicronoilmistparticlesgeneratedbymetalmachiningprocesses AT kojirohirai characterizationofsubmicronoilmistparticlesgeneratedbymetalmachiningprocesses AT kantafukumori characterizationofsubmicronoilmistparticlesgeneratedbymetalmachiningprocesses AT hidenorihigashi characterizationofsubmicronoilmistparticlesgeneratedbymetalmachiningprocesses AT yayoiinomata characterizationofsubmicronoilmistparticlesgeneratedbymetalmachiningprocesses AT takafumiseto characterizationofsubmicronoilmistparticlesgeneratedbymetalmachiningprocesses |