Study of the Effect of Quenchants on the Machinability of Heat Treated Mild-Steel
Heat treated steels that are quenched rapidly show an increase in hardness and toughness but also show an increase in brittleness which could lead to a higher surface roughness and low material removal rate while machining. Hence, the choice of quenchants has a significant effect on the hardness of...
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| Format: | Article |
| Language: | English |
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Faculty of Engineering and Technology
2022-09-01
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| Series: | Nigerian Journal of Technological Development |
| Subjects: | |
| Online Access: | https://journal.njtd.com.ng/index.php/njtd/article/view/1001 |
| _version_ | 1811206412758417408 |
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| author | T. S. Ogedengbe T. A. Adeyi O. Q. Ajao O. A. Ileoye |
| author_facet | T. S. Ogedengbe T. A. Adeyi O. Q. Ajao O. A. Ileoye |
| author_sort | T. S. Ogedengbe |
| collection | DOAJ |
| description |
Heat treated steels that are quenched rapidly show an increase in hardness and toughness but also show an increase in brittleness which could lead to a higher surface roughness and low material removal rate while machining. Hence, the choice of quenchants has a significant effect on the hardness of low carbon steels. In this research work, the effect of some selected quenchants on the mechanical properties of heat treated and machined mild steel was investigated. Four samples of the carbon steel rods were furnace heated at 8500C and quenched with water, molten salt, potash alum and used engine oil. Central Composite Designs of Design Expert version 12 was used to plan the experiment. Machining factors used were, speed (100-450 rpm), feed rate (0.01-0.03 mm/rev), depth of cut (1-2mm). Surface roughness and material removal rate as well as the results of quenchant characterization were the responses studied. The favored quenchant was oil with the lowest surface roughness, hardness and material removal rate of 0.33µm and 187.78BHN and 0.020133mm3/min respectively. This is because the use of oil resulted in the highest reduction in surface roughness and enhanced material removal rate.
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| first_indexed | 2024-04-12T03:47:02Z |
| format | Article |
| id | doaj.art-fc9bd13c0f1540e2a62496a69e365d94 |
| institution | Directory Open Access Journal |
| issn | 2437-2110 |
| language | English |
| last_indexed | 2024-04-12T03:47:02Z |
| publishDate | 2022-09-01 |
| publisher | Faculty of Engineering and Technology |
| record_format | Article |
| series | Nigerian Journal of Technological Development |
| spelling | doaj.art-fc9bd13c0f1540e2a62496a69e365d942022-12-22T03:49:06ZengFaculty of Engineering and TechnologyNigerian Journal of Technological Development2437-21102022-09-01193Study of the Effect of Quenchants on the Machinability of Heat Treated Mild-SteelT. S. Ogedengbe0T. A. AdeyiO. Q. AjaoO. A. IleoyeDepartment of Mechanical Engineering, Elizade University Heat treated steels that are quenched rapidly show an increase in hardness and toughness but also show an increase in brittleness which could lead to a higher surface roughness and low material removal rate while machining. Hence, the choice of quenchants has a significant effect on the hardness of low carbon steels. In this research work, the effect of some selected quenchants on the mechanical properties of heat treated and machined mild steel was investigated. Four samples of the carbon steel rods were furnace heated at 8500C and quenched with water, molten salt, potash alum and used engine oil. Central Composite Designs of Design Expert version 12 was used to plan the experiment. Machining factors used were, speed (100-450 rpm), feed rate (0.01-0.03 mm/rev), depth of cut (1-2mm). Surface roughness and material removal rate as well as the results of quenchant characterization were the responses studied. The favored quenchant was oil with the lowest surface roughness, hardness and material removal rate of 0.33µm and 187.78BHN and 0.020133mm3/min respectively. This is because the use of oil resulted in the highest reduction in surface roughness and enhanced material removal rate. https://journal.njtd.com.ng/index.php/njtd/article/view/1001Mild-steelMachining Material removal rateQuenchantsSteelSurface roughness |
| spellingShingle | T. S. Ogedengbe T. A. Adeyi O. Q. Ajao O. A. Ileoye Study of the Effect of Quenchants on the Machinability of Heat Treated Mild-Steel Nigerian Journal of Technological Development Mild-steel Machining Material removal rate Quenchants Steel Surface roughness |
| title | Study of the Effect of Quenchants on the Machinability of Heat Treated Mild-Steel |
| title_full | Study of the Effect of Quenchants on the Machinability of Heat Treated Mild-Steel |
| title_fullStr | Study of the Effect of Quenchants on the Machinability of Heat Treated Mild-Steel |
| title_full_unstemmed | Study of the Effect of Quenchants on the Machinability of Heat Treated Mild-Steel |
| title_short | Study of the Effect of Quenchants on the Machinability of Heat Treated Mild-Steel |
| title_sort | study of the effect of quenchants on the machinability of heat treated mild steel |
| topic | Mild-steel Machining Material removal rate Quenchants Steel Surface roughness |
| url | https://journal.njtd.com.ng/index.php/njtd/article/view/1001 |
| work_keys_str_mv | AT tsogedengbe studyoftheeffectofquenchantsonthemachinabilityofheattreatedmildsteel AT taadeyi studyoftheeffectofquenchantsonthemachinabilityofheattreatedmildsteel AT oqajao studyoftheeffectofquenchantsonthemachinabilityofheattreatedmildsteel AT oaileoye studyoftheeffectofquenchantsonthemachinabilityofheattreatedmildsteel |