An Approach to Reduce Thermal Damages on Grinding of Bearing Steel by Controlling Cutting Fluid Temperature
The use of cutting fluid is crucial in the grinding process due to the elevated heat generated during the process which typically flows to the workpiece and can adversely affect its integrity. Considering the conventional technique for cutting fluid application in grinding (flood), its efficiency is...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/10/1660 |
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| author | Raphael Lima de Paiva Rodrigo de Souza Ruzzi Rosemar Batista da Silva |
| author_facet | Raphael Lima de Paiva Rodrigo de Souza Ruzzi Rosemar Batista da Silva |
| author_sort | Raphael Lima de Paiva |
| collection | DOAJ |
| description | The use of cutting fluid is crucial in the grinding process due to the elevated heat generated during the process which typically flows to the workpiece and can adversely affect its integrity. Considering the conventional technique for cutting fluid application in grinding (flood), its efficiency is related to certain factors such as the type of fluid, nozzle geometry/positioning, flow rate and coolant concentration. Another parameter, one which is usually neglected, is the cutting fluid temperature. Since the heat exchange between the cutting fluid and workpiece increases with the temperature difference, controlling the cutting fluid temperature before its application could improve its cooling capability. In this context, this work aimed to analyze the surface integrity of bearing steel (hardened SAE 52100 steel) after grinding with an Al<sub>2</sub>O<sub>3</sub> grinding wheel with the cutting fluid delivered via flood technique at different temperatures: 5 °C, 10 °C, 15 °C as well as room temperature (28 ± 1 °C). The surface integrity of the workpiece was analyzed in terms of surface roughness (Ra parameter), images of the ground surface, and the microhardness and microstructure beneath the machined surface. The results show that the surface roughness values reduced with the cutting fluid temperature. Furthermore, the application of a cutting fluid at low temperatures enabled the minimization of thermal damages regarding visible grinding burns, hardness variation, and microstructure changes. |
| first_indexed | 2024-03-10T06:22:57Z |
| format | Article |
| id | doaj.art-5b405a0f5b614258a99c38286f30c56c |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T06:22:57Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-5b405a0f5b614258a99c38286f30c56c2023-11-22T19:10:17ZengMDPI AGMetals2075-47012021-10-011110166010.3390/met11101660An Approach to Reduce Thermal Damages on Grinding of Bearing Steel by Controlling Cutting Fluid TemperatureRaphael Lima de Paiva0Rodrigo de Souza Ruzzi1Rosemar Batista da Silva2School of Mechanical Engineering, Campus Univ. Min. Petronio Portella, Federal University of Piaui (UFPI), Ininga, Teresina 64000, PI , BrazilSchool of Mechanical Engineering, Federal University of Uberlandia (UFU), Av. João N. de Avila, 2121, Uberlandia 38400, MG , BrazilSchool of Mechanical Engineering, Federal University of Uberlandia (UFU), Av. João N. de Avila, 2121, Uberlandia 38400, MG , BrazilThe use of cutting fluid is crucial in the grinding process due to the elevated heat generated during the process which typically flows to the workpiece and can adversely affect its integrity. Considering the conventional technique for cutting fluid application in grinding (flood), its efficiency is related to certain factors such as the type of fluid, nozzle geometry/positioning, flow rate and coolant concentration. Another parameter, one which is usually neglected, is the cutting fluid temperature. Since the heat exchange between the cutting fluid and workpiece increases with the temperature difference, controlling the cutting fluid temperature before its application could improve its cooling capability. In this context, this work aimed to analyze the surface integrity of bearing steel (hardened SAE 52100 steel) after grinding with an Al<sub>2</sub>O<sub>3</sub> grinding wheel with the cutting fluid delivered via flood technique at different temperatures: 5 °C, 10 °C, 15 °C as well as room temperature (28 ± 1 °C). The surface integrity of the workpiece was analyzed in terms of surface roughness (Ra parameter), images of the ground surface, and the microhardness and microstructure beneath the machined surface. The results show that the surface roughness values reduced with the cutting fluid temperature. Furthermore, the application of a cutting fluid at low temperatures enabled the minimization of thermal damages regarding visible grinding burns, hardness variation, and microstructure changes.https://www.mdpi.com/2075-4701/11/10/1660grindingcutting fluid temperatureSAE 52100 steelsurface integritythermal damages |
| spellingShingle | Raphael Lima de Paiva Rodrigo de Souza Ruzzi Rosemar Batista da Silva An Approach to Reduce Thermal Damages on Grinding of Bearing Steel by Controlling Cutting Fluid Temperature Metals grinding cutting fluid temperature SAE 52100 steel surface integrity thermal damages |
| title | An Approach to Reduce Thermal Damages on Grinding of Bearing Steel by Controlling Cutting Fluid Temperature |
| title_full | An Approach to Reduce Thermal Damages on Grinding of Bearing Steel by Controlling Cutting Fluid Temperature |
| title_fullStr | An Approach to Reduce Thermal Damages on Grinding of Bearing Steel by Controlling Cutting Fluid Temperature |
| title_full_unstemmed | An Approach to Reduce Thermal Damages on Grinding of Bearing Steel by Controlling Cutting Fluid Temperature |
| title_short | An Approach to Reduce Thermal Damages on Grinding of Bearing Steel by Controlling Cutting Fluid Temperature |
| title_sort | approach to reduce thermal damages on grinding of bearing steel by controlling cutting fluid temperature |
| topic | grinding cutting fluid temperature SAE 52100 steel surface integrity thermal damages |
| url | https://www.mdpi.com/2075-4701/11/10/1660 |
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