Friction and very high temperature are still the major challenges in hard machining technology they greatly affect cutting efficiency. The application of MQL (minimum quantity lubrication) method, using nanoparticles order to improve cooling lubrication performance base oil, has proven be a promising solution. Hence, this work aimed investigate effectiveness Al2O3/MoS2 hybrid nanofluid Al2O3 MoS2 mono nanofluids turning 90CrSi steel (60–62 HRC) under an environment. Box-Behnken experimental...

In this study, Fe3O4/GO nanocomposite was synthesized by hydrothermal method and tested for its efficiency in removing methylene blue (MB) congo red (CR) from water. The characterized using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM). optimal values MB CR removal were determined to be pH 6.0, an adsorbent weight of 50.0 mg, a contact time 10 min. adsorption isotherms the contaminants on analyzed Freundlich model, indicating...

The high cutting heat and forces are still the big obstacles in hard machining technology, which puts more pressure to find out alternative solution for these problems. work content presents an experimental study on effect of nanoparticle concentration parameters surface roughness force during milling under MQL environment using Al 2 O 3 nano-cutting oil. Box-Behnken designs response methodology was used evaluate influence input determine optimal values. obtained results show that...

Cutting fluids used in the metal machining industry have exerted serious impacts on environment and human health. In addition, very high cutting heat forces machining-hardened steels been a growing concern field. Hence, new, eco-friendly cooling lubricating techniques are necessary to study develop. Minimum quantity lubrication (MQL) minimum (MQCL) using nano proven as alternative solutions for difficult-to cut materials while retaining an environmentally friendly characteristic....

In recent years, the application of environmentally friendly cutting fluids in metal industry has been a growing concern all over world. this study, minimum quantity cooling lubrication (MQCL) technique, which uses very small amount oil, is motivated to apply hard milling process Hardox 500 steel. Further, rice bran natural biodegradable used as base fluid Al2O3/MoS2 hybrid nanofluid. ANOVA analysis study influences nanoparticle concentration, speed, and feed rate on surface roughness. The...

The improvement of hard machining efficiency has been a growing concern in the production practice while environmental friendly characteristics have to be guaranteed. application nanofluid minimum quantity lubrication (NF MQL) technique was considered as promising approach obtain cooling and effectiveness cutting area. In this present study, MQL turning performance using CBN inserts under different conditions (dry, Al 2 O 3 nano oil, /MoS hybrid oil) investigated through evaluating force,...

Machining difficult-to-cut materials is one of the increasingly concerned issues in metalworking industry. Low machinability and high cutting temperature generated from contact zone are main obstacles that need to be solved order improve economic technical efficiency but still have ensure environmental friendliness. The application MQL method using nano fluid suggested solutions cooling lubricating performance pure-MQL for machining materials. objective this paper investigate effects...

In recent years, more efficient hard machining processes have notably increased in demand for higher productivity but environmental friendliness. High hardness and strength as well the enormous amount of cutting temperature are still biggest obstacles. Nanofluid minimum quantity lubrication (NFMQL)–assisted has become a feasible promising solution to overcome these problems. The work presents experimental study on effects air pressure (5, 6, 7 bar), flow rate (150, 200, 250 L/min), Al 2 O 3...

Minimum Quantity Lubrication (MQL) is widely used in machining, especially hard machining. However, this method has many limitations regarding cooling and lubrication capabilities. In recent years, nano-cutting oils have been researched applied machining to improve the efficiency of MQL method. research, machinability 90CrSi steel with carbide inserts using nanofluid different concentrations (1%, 1.5%, 3%) molybdenum disulfide (MoS2) nanoparticles emulsion oil was evaluated by applying...

Lubrication and cooling in hard machining is an urgent growing concern. The use of a suitable lubrication condition crucial factor has great influence on the efficiency machined surface quality machining. Among proposed technological solutions, minimum quantity (MQL) using nano-cutting oils novel solution its effectiveness been proven for turning. This work aims to investigate MQL parameters MoS2 oil including nanoparticle concentration, air pressure, flow rate roughness resultant cutting...

Minimum quantity lubrication (MQL) has gained significant attention in various research fields and industrial applications for its advantages of being environmentally friendly suitable sustainable production. The effectiveness MQL is increasing significantly by using nano cutting fluid, which can be produced suspending nanoparticles the based fluid. This study aims to investigate effects MoS2 nanoparticle concentration, speed, feed rate on hard turning 90CrSi steel terms surface roughness...

Saw-tooth chip generated from hard turning is one of the most distinguishing features with conventional process. The presented work aims to contribute an extensive understanding formation mechanism and main parameters saw-tooth chips in oblique 90CrSi hardened tool steel (60–62 HRC). effects dry, Al 2 O 3 nanofluid MQL, /MoS hybrid MQL conditions on serrated were experimentally investigated terms morphology, color, segment spacing, segmentation frequency, shear angle. obtained experimental...

The present work shows the process for MoS2 nanosheet production by liquid N2-queched bulk, a novel method having highly efficient, green, and facile operation. produced nanoparticles are suspended in minimum quantity cooling lubrication (MQCL)-based fluid to form nanofluid used hard milling of AISI D2 steel. study aims improve hard-milling performance assisted MQCL technique using nanofluid. ANOVA analysis is evaluate effects three input machining variables, including nanoparticle...

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Applying nanofluid made by adding alumina nanoparticles to industrial oil may reduce the cutting force, friction, and temperature and, from that, improve tool life in hobbing process. However, it is difficult set up experiment for actual gear process, because measuring force process very complicated expensive. Therefore, a fly test on horizontal milling machine was performed simulate In this research, fuzzy theory combined with Taguchi method order optimize multi-responses of as total ratio...

Nanolubricant mixing the normal lubricant with nanoparticles, gradually becomes a new trend study for metal cutting enhancement. An addition of nanoparticles improves lubricating properties and convective heat transfer coefficient (cooling properties) nanolubricants. In present work, nanolubricant is formulated by using dispersions 0.3% Al2O3 in industrial oil VG46 enhancement gear machining performance SCM420 steel. Comparative flank wear, crater wear profile error hobbing oils existing...

Bach Long Vi island is an offshore district in the centre of Gulf Tonkin Vietnam and administratively belongs to Hai Phong city. The surrounded by abundant marine ecosystems with high biodiversity one 16 protected areas approved Prime Minister on 26/5/2010 according Decision No.742/QD-TTg. Currently, addition main service economic activities as fishery logistics, still remains wild features beautiful scenery, fresh air diversity species that are suitable for development eco-tourism resorts....

The present work focuses on the performance of nanofluids called CN46-NanoAl 2 O 3 .80formulated by using dispersions nano aluminum oxide (Al ) in ISO VG46 industrial oil machining during gear hobbing AISI 4118 steel.In gears, is one most important processes, especially to produce various shapes for adapting diverse applications.However, demand high quality brings attention product quality, particularly roughness machined surface because its effect appearance, function, and reliability.For...

SKD11 steel is a high-carbon and high-chromium alloy tool used to do cold work or hot dressing dies, sides of rollers, screw heading molds. The hardened has high hardness 58-62HRC, good wear resistance, toughness. Hard turning an important process because manufacturers continually seek ways manufacture their parts with lower cost, higher quality, rapid setups, investment, smaller tooling inventory while eliminating non-valueadded activities where Surface roughness parameter determining the...

CÁC YẾU TỐ TÁC ĐỘNG ĐẾN PHÁT TRIỂN CÔNG NGHIỆP BỀN VỮNG Ở TỈNH BẮC GIANG