Some Studies on Chip Formation Mechanism in CNC Turning of Biocompatible Co-Cr-Mo Alloy

Jagtap, Ketan; Pawade, Raju S.

doi:10.1016/j.promfg.2018.02.042

Cited by 10 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In each case, the effect of cutting speed was negligible. The obtained results are consistent with other research regarding the relations between machining input parameters and surface topography [9][10][11][12]25,32], according to which, the feed has the greatest impact on the quality of the obtained surfaces.…”

Section: Discussionsupporting

confidence: 91%

Evaluation of Surface Topography after Face Turning of CoCr Alloys Fabricated by Casting and Selective Laser Melting

et al. 2020

View full text Add to dashboard Cite

The machinability of hard-to-cut CoCr alloys manufactured by Selective Laser Melting (SLM) technology is not yet sufficiently studied. Therefore, this work focuses on evaluation of surface texture formation during face turning of CoCr alloy. As part of the research, two specimen types were subject to comparison: made with the application of conventional casting and manufactured by additive manufacturing—SLM. A number of analytical and experimental methods were employed to describe the specimen composition and morphology, as: X-Ray Diffraction Analysis (XRD), optical metallurgical microscopy, confocal optical microscopy, and Vickers hardness HV0.1 measurements. In the next stage, the measurements of surface topographies formed during turning in a range of variable cutting speeds and feeds were carried out. Ultimately the multi-factor MANOVA (Multivariate Analysis of Variance) illustrating the influence of manufacturing technology, cutting speed, and feed ratio on selected surface parameters of samples was made. It has been demonstrated that during face turning with feeds up to 0.15 mm/rev, the similar values of surface roughness height and material ratio curve parameters were reached for both tested CoCr alloys. However, in a range of higher feed values, the surface quality of CoCr samples fabricated by SLM was lower than that reached for CoCr after casting process.

show abstract

Section: Discussionsupporting

confidence: 91%

Evaluation of Surface Topography after Face Turning of CoCr Alloys Fabricated by Casting and Selective Laser Melting

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Jagtap et al investigated face turning in a dry cutting environment with a CBN insert and cutting settings of V c = 100-125-150 m/min, a p = 0.1-0.2-0.3 mm, and f = 0.1-0.15-0.2 mm/rev [2][3][4][5][6][7][8]. Turning experiments were performed on AZ91HP magnesium alloy by Tönsoff et al [9].…”

Section: Introductionmentioning

confidence: 99%

Some Studies on Cutting Force Generation in Machining of Mg-Ca1.0 Alloy

Jagtap,

Sanap

2024

JGEU

View full text Add to dashboard Cite

Magnesium alloy has qualities that are similar to those of bone, it is now commonly acknowledged as a biodegradable material. Mg-Ca1.0 is a recently developed biodegradable substance that doesn’t cause any harmful substances to be produced in the body. It is frequently utilized in fixation screws and supporting plates for bone implants. To far, very little research has been published on the machining of biodegradable Magnesium Calcium alloy. This investigation’s goal is to evaluate the cutting forces produced during a face milling procedure. The experimental work used a one-factor-at-a-time strategy to assess how process factors affect performance attributes. The current study uses a CVD diamond-coated insert to examine how the depth of cut, feed rate, and cutting speed affect the radial (Fx), tangential (Fy), and axial (Fz) cutting forces during face milling in a dry machining environment.

show abstract

“…Baron and coworkers [11][12][13] reported that in uncoated carbide inserts, rates are limited by low cutting speeds (v c ) at 20-60 m.min − 1 . Other researchers [14][15][16][17][18] used cutting speeds varying from 60 to 400 m.min − 1 depending on the cutting tool type, such as coated carbide, ceramic or cBN tools. Although high cutting speeds are applicable in the turning of biomedical cobalt alloys, the tool life is considerably reduced [15], i.e., the wear or damage suffered by the tool directly affects its cutting capacity and working time.…”

Section: Introductionmentioning

confidence: 99%

Tool wear and surface roughness characterization during turning of Co-Cr-Mo alloy ASTM F75 with coated carbide tools

Hassui

2023

Int J Adv Manuf Technol

View full text Add to dashboard Cite

The cobalt chromium molybdenum (Co-Cr-Mo) system composes speci c alloys used in several biomedical applications, mainly in implants and prostheses manufacturing. Due to its intrinsic properties, the alloy processing is known as hard-to-machine. Therefore, in this work, we machined the Co-Cr-Mo alloy ASTM F75 and analyzed the effects of the cutting parameters on tool wear and the surface roughness generated during the turning. We performed a complete factorial with two factors, levels and replicas, in which the cutting speed varied from 60 to 90 m.min -1 and the feed rate from 0.08 to 0.13 mm.rev -1 . Through Scanning Electron Microscopy (SEM) and confocal microscopy analysis, we quanti ed wear on the cutting tool and the surface roughness of specimens. During the morphological studies, we noted the presence of crater and ank wear, with crater wear being predominant. This crater wear was exclusively in uenced by the change in feed rate due to the loss of tool coating. Moreover, the changes in cutting parameters signi cantly in uenced both cutting tool wear and workpiece surface roughness. The extreme cutting parameters caused signi cant differences in peak and valleys height on the turned workpiece surface. This way, the average roughness is strongly affected by the increase in tool wear induced by cutting parameters during the process. By energy dispersion spectroscopy (EDXA), we identi ed the chemical elements on the worn tool and workpiece surfaces which revealed that the primary mechanism causing tool wear is workpiece material adhesion to the insert rake surface. Furthermore, we con rmed the presence of carbides embedded on the machined surface, indicating abrasive action of these particles during cutting.

show abstract

Some Studies on Chip Formation Mechanism in CNC Turning of Biocompatible Co-Cr-Mo Alloy

Cited by 10 publications

References 9 publications

Evaluation of Surface Topography after Face Turning of CoCr Alloys Fabricated by Casting and Selective Laser Melting

Evaluation of Surface Topography after Face Turning of CoCr Alloys Fabricated by Casting and Selective Laser Melting

Some Studies on Cutting Force Generation in Machining of Mg-Ca1.0 Alloy

Tool wear and surface roughness characterization during turning of Co-Cr-Mo alloy ASTM F75 with coated carbide tools

Contact Info

Product

Resources

About