Bar diameter as an influencing factor on temperature in turning

Boud, Fathi

doi:10.1016/j.ijmachtools.2006.04.012

Cited by 13 publications

(7 citation statements)

References 22 publications

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“…Experimentations alone can be observed within literature as well, to see the effect of some parameters mostly. Boud (2007) conducted experiments while turning carbon steel bar to see the effect of bar diameter on temperature outcome.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional temperature predictions in machining processes using finite difference method

Ulutan

Lazoğlu

Dinc

2009

Journal of Materials Processing Technology

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Section: Introductionmentioning

confidence: 99%

Three-dimensional temperature predictions in machining processes using finite difference method

Ulutan

Lazoğlu

Dinc

2009

Journal of Materials Processing Technology

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“…Using a thermocouple welded to the cutting tool, Boud [42] studied the effect of bar diameter on cutting temperature with V fixed at 10, 20, 30 and 40 m/min, using three bars sizes similar to the range of turned diameters used in this paper. It was found that the tool temperature increased in turning a smaller diameter bar and the difference was greater at higher V. According to [22], tool life decreases at higher V because more heat is generated.…”

Section: Temperaturementioning

confidence: 99%

Long Sump Life Effects of a Naturally Aged Bio-Ester Oil Emulsion on Tool Wear in Finish Turning a Ni-Based Superalloy

Wood,

Mantle,

Boud

et al. 2023

Metals

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This paper discusses a method of finish turning Inconel 718 alloy to compare machining performance of a naturally aged and used metalworking fluid (MWF), which had been conventionally managed through its life cycle, with the same new unaged product. The MWF concentrate was a new-to-market bio-ester oil, diluted with water to produce an emulsion. In the experiments, 50 mm diameter bars were turned down with multiple passes at a 250 μm depth of cut to reach a tool flank wear of 200 μm. The machining was interrupted at several stages to measure the flank wear and compare the chip forms for the aged and unaged MWF. The method of finish turning used a small tool nose radius and a small depth of cut that was found to be sensitive in detecting a difference in the flank wear and chip forms for the aged and unaged MWF. On the chemistry, the findings suggest that higher total hardness of the aged MWF was the cause of reduced lubricity and accelerated flank wear. This paper discusses the state of the art with the insights that underpin the finish turning method for the machinability assessment of MWFs. The findings point to stabilization of the MWF chemistry to maintain machining process capability over an extended sump life.

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“…Flow rate of solid lubricant mixed in SAE 40 is kept at 10 ml/min. The L/D ratio 23 of the workpiece is maintained at 7-10.…”

Section: Experimental Workmentioning

confidence: 99%

Investigation on turning of AISI 1040 steel with the application of nano-crystalline graphite powder as lubricant

Srikiran

Ramji

Satyanarayana

et al. 2013

Proceedings of the Institution of Mechanical Engineers, Part C:

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The past few decades have witnessed significant advancements in turning processes, cutting tools and coolant/lubricant chemistry. These developments have enhanced the machining capabilities of hard materials when machining at higher cutting conditions. Turning, being characterized by the development of high temperatures at the cutting zone, is critical with respect to the tool life and surface finish apart from other machining results like the forces generated. This phenomenon of heat generation at the cutting zone plays a negative role during turning operations due to their peculiar characteristics such as poor thermal conductivity, high strength at elevated temperature, resistance to wear and chemical degradation. Cutting fluids and solid lubricants are generally used to overcome the problem of heat generation at the cutting zone. The use of cutting fluids in the conventional way may not effectively control the heat generated in turning operation. Moreover, cutting fluids are a major source of pollution. With the advancement in technology, nano-level particulate solid lubricants are being used nowadays in machining operations, especially grinding and turning. The present work deals with the investigation of using nano-level particulate graphite powder as a solid lubricant and various tests were conducted by machining AISI 1040 steel using tungsten carbide inserts. The experiments were conducted by taking into account the parameters like feed rate ranging from 0.05 mm/rev to 0.125 mm/rev, cutting speed ranging from 51 m/min to 192.6 m/min and depth of cut from 0.25 mm to 1 mm. Four levels of each parameter are considered for experimentation. The results indicate that with the decrease in the nano-sized graphite powder, there is an increase of cutting forces – feed force, cutting force and thrust force. The temperatures at the tool–chip interface also increases with the decrease in the lubricant size. It is found that the surface roughness of the workpiece after machining deteriorated due to the size of the lubricant particle.

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Bar diameter as an influencing factor on temperature in turning

Cited by 13 publications

References 22 publications

Three-dimensional temperature predictions in machining processes using finite difference method

Three-dimensional temperature predictions in machining processes using finite difference method

Long Sump Life Effects of a Naturally Aged Bio-Ester Oil Emulsion on Tool Wear in Finish Turning a Ni-Based Superalloy

Investigation on turning of AISI 1040 steel with the application of nano-crystalline graphite powder as lubricant

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