Performance and evaluation of vegetable oil-based fluids as future cutting fluids in turning of duplex stainless steel

In this study, the performance of groundnut oil as an alternate cutting fluid was compared with that of soluble oil during machining of stainless steel. The temperature at the cutting zone, surface roughness and the chip formation were monitored under the two cutting conditions (soluble oil and vegetable oil). The machining parameters used were cutting speed (75 – 135 rev/min), feed rate (0.01 – 0.05 mm3/mm) and depth of cut (0.01 – 0.08 mm). The experiment was designed using Taguchi orthogonal array of Minitab 18 which generated a 9 run machining parameter mix for the experimentation. The Physiochemical properties of the various fluids were also analyzed to determine the properties and constituent elements of the cutting fluids. The actual machining of the stainless steel bar was done using a Colchester mastiff lathe machine. Results show that feed rate and cutting speed had the most significant effect on surface roughness during machining of stainless steel both with groundnut oil and soluble oil. Soluble oil was a better coolant but poorer in lubrication as vegetable oil reduced surface roughness more when used. Surface roughness value improved from 9.21μm during machining with soluble oil to 3.84μm during machining with groundnut oil which represented a 58.3% improvement. Hence, vegetable oil is therefore recommended as good alternative cutting fluid to soluble oil during machining of stainless steel.

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Experimental investigation of cutting temperature and surface roughness for different cutting fluids during turning of Duplex stainless steel-2205 under minimum quantity lubrication technique

JOURNAL OF MECHANICAL ENGINEERING AND SCIENCES ◽

10.15282/jmes.15.2.2021.09.0634 ◽

2021 ◽

Vol 15 (2) ◽

pp. 8042-8056

Author(s):

Prashantha Kumar S T ◽

Thirtha Prasada HP

Keyword(s):

Surface Roughness ◽

Stainless Steel ◽

Duplex Stainless Steel ◽

Cutting Temperature ◽

Minimum Quantity Lubrication ◽

Deionized Water ◽

Cutting Fluid ◽

Depth Of Cut ◽

Cutting Fluids ◽

Minimum Quantity

Duplex stainless steel (DSS)-2205 comes under hard to machine material owing to its inherent properties but more applications in severe working conditions hence, selection of turning process parameters and suitable cutting fluids of DSS-2205 is essential. In the present work, investigate the performance of Deionized water, neat cut oil, and emulsified fluid on cutting temperature and surface roughness during turning of duplex stainless steel-2205 under minimum quantity lubrication technique. Based on a face-centered composite design, 20 experiments were conducted with varying speed, feed, and depth of cut in three levels for three different fluids. Analysis of variance (ANOVA) is used to identify significant parameters that affect the response. Numerical optimization was carried out under Desirability Function Analysis (DFA) for cutting temperature during deionized water cutting fluid for surface roughness during emulsified cutting fluid. Depth of cut is the significant factor for cutting temperature contribution is 74.83% during Deionized water as a fluid, and feed is the significant factor for surface roughness contribution is 93.57% during emulsified fluid. The optimum cutting parameters were determined for speed (50m/min), feed (0.051mm/rev) and depth of cut (0.4mm). Experimental results revealed that Deionized water gives better results for reduced the cutting temperature and emulsified fluid for surface roughness reduction.

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Identification by Electron Microdiffraction of Intermetallic Phases in a Duplex Stainless Steel

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100136076 ◽

1990 ◽

Vol 48 (2) ◽

pp. 494-495

Author(s):

A. Redjaïmia ◽

J.P. Morniroli ◽

G. Metauer ◽

M. Gantois

Keyword(s):

Stainless Steel ◽

Duplex Stainless Steel ◽

Convergent Beam Electron Diffraction ◽

Intermetallic Phases ◽

Small Particles ◽

Parallel Beam ◽

Diffraction Patterns ◽

Average Size ◽

Convergent Beam ◽

Electron Microdiffraction

2D and especially 3D symmetry information required to determine the crystal structure of four intermetallic phases present as small particles (average size in the range 100-500nm) in a Fe.22Cr.5Ni.3Mo.0.03C duplex stainless steel is not present in most Convergent Beam Electron Diffraction (CBED) patterns. Nevertheless it is possible to deduce many crystal features and to identify unambiguously these four phases by means of microdiffraction patterns obtained with a nearly parallel beam focused on a very small area (50-100nm).From examinations of the whole pattern reduced (RS) and full (FS) symmetries the 7 crystal systems and the 11 Laue classes are distinguished without ambiguity (1). By considering the shifts and the periodicity differences between the ZOLZ and FOLZ reflection nets on specific Zone Axis Patterns (ZAP) which depend on the crystal system, the centering type of the cell and the glide planes are simultaneously identified (2). This identification is easily done by comparisons with the corresponding simulated diffraction patterns.

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Effects of the Cooling Rate After Annealing Treatment on the Microstructure and the Mechanical Properties of Super-Duplex Stainless Steel

Korean Journal of Metals and Materials ◽

10.3365/kjmm.2012.50.10.735 ◽

2012 ◽

Vol 50 (10) ◽

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Duplex Stainless Steel ◽

Cooling Rate ◽

Annealing Treatment ◽

Super Duplex Stainless Steel

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High Temperature Precipitation Behavior of High-Nitrogen Duplex Stainless Steel

Korean Journal of Metals and Materials ◽

10.3365/kjmm.2011.49.2.093 ◽

2011 ◽

Vol 49 (2) ◽

Keyword(s):

Stainless Steel ◽

High Temperature ◽

Duplex Stainless Steel ◽

Precipitation Behavior ◽

High Nitrogen

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DETECTION OF THE SIGMA PHASE IN A DUPLEX STAINLESS STEEL THROUGH MEASUREMENTS OF MAGNETIC PERMEABILITY

10.26678/abcm.cobem2019.cob2019-1721 ◽

2019 ◽

Author(s):

Edgard Silva ◽

Francisco Eduardo Mendes da Silva ◽

Amanda Medeiros ◽

Ana Paula Alves Pacheco ◽

IZAURA VIEGAS ◽

...

Keyword(s):

Stainless Steel ◽

Duplex Stainless Steel ◽

Magnetic Permeability ◽

Sigma Phase

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Studying The Effect of a New Mixed Cutting Fluid on Surface Roughness

Engineering and Technology Journal ◽

10.30684/etj.v38i11a.1516 ◽

2020 ◽

Vol 38 (11A) ◽

pp. 1593-1601

Author(s):

Mohammed H. Shaker ◽

Salah K. Jawad ◽

Maan A. Tawfiq

Keyword(s):

Surface Roughness ◽

Stainless Steel ◽

Cutting Parameters ◽

Machining Process ◽

Cutting Fluid ◽

Depth Of Cut ◽

Cutting Fluids ◽

Machining Processes ◽

Dry Cutting ◽

Cutting Speeds

This research studied the influence of cutting fluids and cutting parameters on the surface roughness for stainless steel worked by turning machine in dry and wet cutting cases. The work was done with different cutting speeds, and feed rates with a fixed depth of cutting. During the machining process, heat was generated and effects of higher surface roughness of work material. In this study, the effects of some cutting fluids, and dry cutting on surface roughness have been examined in turning of AISI316 stainless steel material. Sodium Lauryl Ether Sulfate (SLES) instead of other soluble oils has been used and compared to dry machining processes. Experiments have been performed at four cutting speeds (60, 95, 155, 240) m/min, feed rates (0.065, 0.08, 0.096, 0.114) mm/rev. and constant depth of cut (0.5) mm. The amount of decrease in Ra after the used suggested mixture arrived at (0.21µm), while Ra exceeded (1µm) in case of soluble oils This means the suggested mixture gave the best results of lubricating properties than other cases.

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