Effect of dipped cryogenic approach on thrust force, temperature, tool wear and chip formation in drilling of AZ31 magnesium alloy
Magnesium alloys tend to have inflammable nature and chip self-ignition at high cutting speeds under dry machining condition, although they can be easily machined with good surface quality. In the drilling process, cooling and lubrication have a critical impact as it controls heat generation, tool we...
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doaj-2c5ef1a8ea5d474daa75e6bcf37c788e2020-11-25T03:54:33ZengElsevierJournal of Materials Research and Technology2238-78542020-05-019328702880Effect of dipped cryogenic approach on thrust force, temperature, tool wear and chip formation in drilling of AZ31 magnesium alloyUgur Koklu0Himmet Coban1Department of Mechanical Engineering, Karamanoglu Mehmetbey University, 70100 Karaman, Turkey; Corresponding author.Natural and Applied Science, Karamanoglu Mehmetbey University, Karaman, TurkeyMagnesium alloys tend to have inflammable nature and chip self-ignition at high cutting speeds under dry machining condition, although they can be easily machined with good surface quality. In the drilling process, cooling and lubrication have a critical impact as it controls heat generation, tool wear, surface quality, and cutting force. In the present study, drilling tests on AZ31 magnesium alloy were performed with dry and cryogenic conditions at various feed rates and cutting speeds. The effect of dipped cryogenic application during drilling on thrust force, temperature, tool wear, and chip formation were investigated. The results showed that the applied cryogenic drilling method provided less tool wear, smaller chips and reduced amount of adhesions. Drilling tests performed in the cryogenic environment increase the thrust forces by 32 %–39 % compared to dry cutting. Spark and chip ignition were not observed even at high cutting speeds during dry cutting.http://www.sciencedirect.com/science/article/pii/S2238785419320770Cryogenic approachAZ31 magnesium alloyDrillingThrust forceDrill wearTemperature |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ugur Koklu Himmet Coban |
spellingShingle |
Ugur Koklu Himmet Coban Effect of dipped cryogenic approach on thrust force, temperature, tool wear and chip formation in drilling of AZ31 magnesium alloy Journal of Materials Research and Technology Cryogenic approach AZ31 magnesium alloy Drilling Thrust force Drill wear Temperature |
author_facet |
Ugur Koklu Himmet Coban |
author_sort |
Ugur Koklu |
title |
Effect of dipped cryogenic approach on thrust force, temperature, tool wear and chip formation in drilling of AZ31 magnesium alloy |
title_short |
Effect of dipped cryogenic approach on thrust force, temperature, tool wear and chip formation in drilling of AZ31 magnesium alloy |
title_full |
Effect of dipped cryogenic approach on thrust force, temperature, tool wear and chip formation in drilling of AZ31 magnesium alloy |
title_fullStr |
Effect of dipped cryogenic approach on thrust force, temperature, tool wear and chip formation in drilling of AZ31 magnesium alloy |
title_full_unstemmed |
Effect of dipped cryogenic approach on thrust force, temperature, tool wear and chip formation in drilling of AZ31 magnesium alloy |
title_sort |
effect of dipped cryogenic approach on thrust force, temperature, tool wear and chip formation in drilling of az31 magnesium alloy |
publisher |
Elsevier |
series |
Journal of Materials Research and Technology |
issn |
2238-7854 |
publishDate |
2020-05-01 |
description |
Magnesium alloys tend to have inflammable nature and chip self-ignition at high cutting speeds under dry machining condition, although they can be easily machined with good surface quality. In the drilling process, cooling and lubrication have a critical impact as it controls heat generation, tool wear, surface quality, and cutting force. In the present study, drilling tests on AZ31 magnesium alloy were performed with dry and cryogenic conditions at various feed rates and cutting speeds. The effect of dipped cryogenic application during drilling on thrust force, temperature, tool wear, and chip formation were investigated. The results showed that the applied cryogenic drilling method provided less tool wear, smaller chips and reduced amount of adhesions. Drilling tests performed in the cryogenic environment increase the thrust forces by 32 %–39 % compared to dry cutting. Spark and chip ignition were not observed even at high cutting speeds during dry cutting. |
topic |
Cryogenic approach AZ31 magnesium alloy Drilling Thrust force Drill wear Temperature |
url |
http://www.sciencedirect.com/science/article/pii/S2238785419320770 |
work_keys_str_mv |
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