Effect of MQL flow rate on machinability of AISI 4140 steel

Gürbüz, Hüseyin; Gönülaçar, Yunus Emre; Baday, Şehmus

doi:10.1080/10910344.2020.1752234

Cited by 20 publications

(5 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Simultaneously, the main cutting force ( F c ) was introduced as an important cutting performance evaluation index in the second stage. 21 The main cutting force was used to evaluate further the influence of cutting parameters on machining performance under different cutting environments. The processing parameters of the second-stage experiment under MQCL and dry cutting conditions are listed in Table 6.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Surface integrity investigation and multi-objective optimization in high-speed cutting of AISI 304 stainless steel for dry cutting and MQCL conditions

Yinzhi

Zheng

Liu

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

View full text Add to dashboard Cite

To realize green production in the manufacturing industry, it is important to reduce or even eliminate the discharge of cutting fluid. In this study, the impact tendency of the cutting parameters on the surface roughness of 304 steel was analyzed by establishing variance analysis models. The surface quality profile parameters and the main cutting force under minimum quantity cooling lubrication (MQCL) and dry cutting conditions were analyzed and compared. The characterization of the morphology of the machined surface was evaluated, and the wear mechanisms of the two machining methods were analyzed. A hybrid machining strategy was developed in which dry cutting is used at the beginning of cutting and dry cutting is replaced with MQCL before the quality of the machined surface deteriorates sharply. This strategy obtains the optimal parameter combination through a genetic algorithm. The most important factor affecting the surface roughness was the feed rate, whereas the change in cutting depth had no obvious effect on the surface roughness. In addition, the parameters of low cutting speed and feed rate were advantageous under dry cutting conditions. However, with increases in the feed rate and cutting speed, the peak and valley of the surface profile gradually increased, and the MQCL conditions were more conducive to obtaining a smoother surface. Furthermore, the MQCL and higher cutting speed could reduce the main cutting force. The surface roughness under hybrid cutting was 5.19% and 18.76% lower than that under MQCL and dry cutting, respectively.

show abstract

Section: Resultsmentioning

confidence: 99%

“…This can be explained as the temperature of the machining area increasing with an increase in cutting speed, resulting in a decrease in the shear strength in the flow area (secondary deformation area). 21 The results show that MQCL and a high cutting speed can reduce the main cutting force.…”

Section: Main Cutting Forcementioning

confidence: 94%

Surface integrity investigation and multi-objective optimization in high-speed cutting of AISI 304 stainless steel for dry cutting and MQCL conditions

Yinzhi

Zheng

Liu

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

View full text Add to dashboard Cite

show abstract

“…Sayuti et al [236] used SiO 2 nanofluid as cutting fluid to study the optimal lubrication parameters in the AISI 4140 hard turning process, and used logic and response analysis to confirm the effective lubricity of nanofluids. Gürbüz et al [237] evaluated the sustainability of the dry, wet and MQL cutting methods in AISI 4140 steel cutting. The experimental results and mathematical model analysis showed that MQL is superior to dry and wet processing in terms of sustainability and cleaner production.…”

Section: Hardened Steelmentioning

confidence: 99%

Nanofluids Minimal Quantity Lubrication Machining: From Mechanisms to Application

Chu,

Li,

Zhou

et al. 2023

Lubricants

View full text Add to dashboard Cite

Minimizing the negative effects of the manufacturing process on the environment, employees, and costs while maintaining machining accuracy has long been a pursuit of the manufacturing industry. Currently, the nanofluid minimum quantity lubrication (NMQL) used in cutting and grinding has been studied as a useful technique for enhancing machinability and empowering sustainability. Previous reviews have concluded the beneficial effects of NMQL on the machining process and the factors affecting them, including nanofluid volume fraction and nanoparticle species. Nevertheless, the summary of the machining mechanism and performance evaluation of NMQL in processing different materials is deficient, which limits preparation of process specifications and popularity in factories. To fill this gap, this paper concentrates on the comprehensive assessment of processability based on tribological, thermal, and machined surface quality aspects for nanofluids. The present work attempts to reveal the mechanism of nanofluids in processing different materials from the viewpoint of nanofluids’ physicochemical properties and atomization performance. Firstly, the present study contrasts the distinctions in structure and functional mechanisms between different types of base fluids and nanoparticle molecules, providing a comprehensive and quantitative comparative assessment for the preparation of nanofluids. Secondly, this paper reviews the factors and theoretical models that affect the stability and various thermophysical properties of nanofluids, revealing that nanoparticles endow nanofluids with unique lubrication and heat transfer mechanisms. Finally, the mapping relationship between the parameters of nanofluids and material cutting performance has been analyzed, providing theoretical guidance and technical support for the industrial application and scientific research of nanofluids.

show abstract

“…Since the amount of oil must be adequately supplied to assure outstanding performance of MQL, the flow rate of lubricant oil must be efficiently controlled [14]. This paper targets to investigate the effects of lubricant oil flow rate to the lubricant oil film thickness formed on the milled workpiece.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Lubricant Oil Film Thickness on Workpiece under Minimum Quantity Lubrication Milling Process

Rosli,

Ismail,

Sani

et al. 2023

Tribology Online

View full text Add to dashboard Cite

Minimum Quantity Lubrication (MQL) technology has drawn attention as an effective lubrication technique despite its small usage of lubricants during the machining process. The technology has undeniably minimized the manufacturing cost as well as the adverse impacts towards the environment and health of operators. However, the ability of the small droplets of lubricant oil to penetrate the cutting zone must be investigated to enhance the machining performance. The penetration ability can be predicted if the amount of lubricant oil adhered to the workpiece is known. Nonetheless, observing the lubricant behavior is commonly challenged by the existing tools during the machining process. Therefore, a non-intrusive technique must be applied to conscientiously observe the lubricant behavior. In this paper, the thickness of lubricant oil resulted by the droplets accumulation on the workpiece during MQL milling process was measured using a Laser-Induced Fluorescence technique to predict the lubricating effects of the lubricant. The surface roughness of workpiece was also measured to investigate how the thickness of lubricant oil affects the machining performance. Experiments were conducted for MQL milling process of aluminium alloy 6061 under constant value of cutting speed and increasing value of lubricant flow rates. The MQL nozzle was tilted 45°, directed perpendicular to the milling direction and fixed together with the cutting tool to let them move together throughout the milling path. Results analysis was performed on the sample whose cutting tool was halfway to the milling path. As a result, the average lubricant oil film thickness was found to increase and obviously fluctuate with increasing flow rates, ranging from 0.2 mm to 0.7 mm. A careful observation of the lubricant oil thickness near the location of cutting tool also suggested that the droplets of lubricant oil probably struggle to penetrate the cutting zone due to the sudden falls at those locations. Furthermore, the correlation between the thickness of lubricant oil film to the performance of milling process under the MQL spraying condition was successfully made since the results trending of the surface roughness of workpiece shows a well agreement with the trending of lubricant oil film thickness.

show abstract

Effect of MQL flow rate on machinability of AISI 4140 steel

Cited by 20 publications

References 41 publications

Surface integrity investigation and multi-objective optimization in high-speed cutting of AISI 304 stainless steel for dry cutting and MQCL conditions

Surface integrity investigation and multi-objective optimization in high-speed cutting of AISI 304 stainless steel for dry cutting and MQCL conditions

Nanofluids Minimal Quantity Lubrication Machining: From Mechanisms to Application

Investigation of Lubricant Oil Film Thickness on Workpiece under Minimum Quantity Lubrication Milling Process

Contact Info

Product

Resources

About