Improvement of surface grinding process performance of CK45 soft steel by minimum quantity lubrication (MQL) technique using compressed cold air jet from vortex tube

Saberi, Abdollah; Rahimi, Abdolreza; Parsa, Hasan; Ashrafijou, M.; Rabiei, F.

doi:10.1016/j.jclepro.2016.04.104

Cited by 81 publications

(20 citation statements)

References 24 publications

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“…This fact is a major constraint on the widespread use of the MQL method in the grinding process [109]. Saberi et al [110] have evaluated the possibility of grinding the surface of C45 steel using the cooled air minimum quantity lubrication (CAMQL) method, which consists in bringing to the grinding zone the air-oil aerosol formed in the MQL nozzle fed with cooled compressed air generated by the cold air gun. The temperature value of the CCA stream delivered to the grinding zone was variable and ranged from − 4 °C (for CCA stream pressure of 0.1 MPa) to 14 °C (for CCA stream pressure of 0.4 MPa).…”

Section: Cooled Air Minimum Quantity Lubrication (Camql)mentioning

confidence: 99%

“…Saberi et al [110] point out that the use of cooled compressed air for the MQL method, and thus improving the cooling efficiency of the grinding zone, may significantly reduce the restrictions on the use of MQL method in grinding. The CAMQL method can be successfully used in soft steel grinding processes, while its wider development requires further research [110].…”

Section: Cooled Air Minimum Quantity Lubrication (Camql)mentioning

confidence: 99%

See 1 more Smart Citation

Modern Approach to Delivery Coolants, Lubricants and Antiadhesives in the Environmentally Friendly Grinding Processes

Nadolny

Kieraś

Sutowski

2020

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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Control of thermal conditions in the grinding zone is possible through effective delivery of substances with cooling, lubricating and antiadhesive properties during the machining process. In addition to the benefits of coolants, however, a number of economic and ecological problems arise, which include the costs of purchase, use and maintenance as well as the environmental impact of its disposal. These negative aspects of the use of cooling and lubricating liquids have contributed to the modern trend of minimizing their output in machining processes, including grinding. This article presents comprehensive characteristics of knowledge in the field of liquids, gases and solids with cooling, lubricating and antiadhesive properties. The author’s original classification of cooling and lubricating agents by their physical state was proposed and a complete list of known modern environmentally friendly methods of cooling and lubrication of the grinding zone was presented. In order to highlight their beneficial features, the background of conventional methods of delivery coolants, lubricants and antiadhesives to the grinding zone used for years were also characterised. A comprehensive list of all known methods of cooling and lubrication of the grinding zone classified according to the physical state of the delivered medium with a clear separation of hybrid methods consisting in simultaneous delivery of many cooling and lubricating agents was described in the summary. The article concludes with the characteristics of directions of further development in the field of cooling and lubrication of the grinding zone.

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Section: Cooled Air Minimum Quantity Lubrication (Camql)mentioning

confidence: 99%

Section: Cooled Air Minimum Quantity Lubrication (Camql)mentioning

confidence: 99%

Modern Approach to Delivery Coolants, Lubricants and Antiadhesives in the Environmentally Friendly Grinding Processes

Nadolny

Kieraś

Sutowski

2020

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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“…Most often, researchers focus on surface grinding process [29][30][31][32], but the possibilities of the MQL method in the grinding of hard-to-cut materials have also been considered [33][34][35][36]. Other known methods of minimising coolant expenditure include: Minimum quantity cooling (MQC) [37][38][39], minimum quantity cooling lubrication (MQCL) [40][41][42][43][44][45][46][47], cold air minimum quantity lubrication (CAMQL) [24,48,49], and cold air and oil mist CAOM [50][51][52][53][54].…”

Section: Introductionmentioning

confidence: 99%

Simulation Studies on Centrifugal MQL-CCA Method of Applying Coolant during Internal Cylindrical Grinding Process

2020

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This paper describes simulation studies regarding the application of the centrifugal minimum quantity lubrication (MQL) method simultaneously with the delivery of a compressed cooled air (CCA) stream in the internal cylindrical grinding process. The idea of a new hybrid cooling and lubrication method connecting centrifugal (through a grinding wheel) lubrication by MQL with a CCA stream is described. The methodology of computational fluid dynamics (CFD) simulation studies, as well as the results of numerical simulations, are presented in detail. The aim of the simulations was to determine the most favourable geometrical and kinematic parameters of the system in the context of air-oil aerosol and CCA flow, as well as heat exchange. In the simulation, the variables were the grinding arbor geometrical parameters, the angle of CCA supply line outlets, and the grinding wheel and workpiece peripheral speed. As a result of the simulation studies, the most favourable geometrical parameters were designated, determining the orientation of the ends of the two CCA supply line outlets before and after the grinding zone, the number of openings in the drilled-out grinding arbor, and the influence of the grinding speed on the parameters of the coolant flow and temperature of objects in the grinding zone. In addition, the results of simulation tests made it possible to visualise the velocity vectors of the two-phase coolant flow in a complex system of air-oil aerosol delivery centrifugally through an open structure of a very fast rotating porous layer (grinding wheel), with an additional supply of CCA using an external cold air gun (CAG).

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“…Araştırmacılar, yüzey pürüzlülüğü açısından, geleneksel soğutucu kullanımının vorteks tüpü kullanımına göre daha iyi sonuç verdiğini, vorteks tüp ile soğutmada geleneksel soğutucuya göre daha az kalıntı gerilme meydana geldiğini belirtmiştir. Ayrıca vorteks tüpü kullanımının silindirik taşlama operasyonunda daireselliği iyilieştirdiğini saptamışlardır [67][68]70]. 67 ve 68 numaralı çalışmalarda iş parçası hızı 18 m/dk; kesme derinlikleri 3,5,10,20,30 µs olarak belirlenmiştir.…”

Section: Taşlama Yöntemine Etkisi (Effect On Grinding Method)unclassified

“…Şekil 7'de vorteks tüpü ile birlikte MQL'in kullanıldığı bir sistem görülmektedir. [70] 4. TARTIŞMA VE BULGULAR (DISCUSSION AND FINDING)…”

Section: Taşlama Yöntemine Etkisi (Effect On Grinding Method)unclassified

Vorteks Soğutma Yöntemi̇ni̇n Talaşli İmalat Yöntemleri̇ Ve Kesme Parametreleri̇ne Göre İncelenmesi̇

Gürkan

Yaşar

Uzun

et al. 2020

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım Ve Teknoloji

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In this study, the working principle of vortex tubes and the usage in the machining was reviewed with the help of previous literature studies. The effect of vortex tubes on machining operations was evaluated in separated titles and discussed its advantages and disadvantages. Figure A. Vortex tube Purpose: In this study, the usage of vortex tubes in turning, milling, drilling and grinding operations were investigated in separated titles. The effects of vortex tube usage on tool life, surface roughness and cutting forces were evaluated. Thus, the advantageous areas of the usage of vortex tube were summarized. Theory and Methods: The effects of vortex tubes on manufacturing processes were examined under four different titles. The materials, cutting tools and the cutting parameters of the processes done with vortex tube were stated in detail. Results: The effect of vortex tube usage in cutting performance was evaluated separately for each of four machining operations in Discussion and Finding section. Conclusion: When the previous studies investigated, the literature of the usage of vortex tube was concentrated upon turning and milling operations in general.

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Improvement of surface grinding process performance of CK45 soft steel by minimum quantity lubrication (MQL) technique using compressed cold air jet from vortex tube

Cited by 81 publications

References 24 publications

Modern Approach to Delivery Coolants, Lubricants and Antiadhesives in the Environmentally Friendly Grinding Processes

Modern Approach to Delivery Coolants, Lubricants and Antiadhesives in the Environmentally Friendly Grinding Processes

Simulation Studies on Centrifugal MQL-CCA Method of Applying Coolant during Internal Cylindrical Grinding Process

Vorteks Soğutma Yöntemi̇ni̇n Talaşli İmalat Yöntemleri̇ Ve Kesme Parametreleri̇ne Göre İncelenmesi̇

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