A study on recycling of abrasives in abrasive water jet machining

Babu, M. K. Gajendra; Chetty, O. V. Krishnaiah

doi:10.1016/s0043-1648(03)00256-4

Cited by 80 publications

(21 citation statements)

References 5 publications

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“…These parameters coincide As for the formation of possible roughness zones that can be detected, Figure 10b-d show the main effect graphs for Zone 1, Zone 2, and Zone 3. The degree of influence of each parameter on the three variables is described below [31,[41][42][43]:…”

Section: Analysis Of Contour Graphs For Significant Parametersmentioning

confidence: 99%

Defect Analysis and Detection of Cutting Regions in CFRP Machining Using AWJM

et al. 2019

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The use of composite materials with a polymeric matrix, concretely carbon fiber reinforced polymer, is undergoing further development owing to the maturity reached by the forming processes and their excellent relationship in terms of specific properties. This means that they can be implemented more easily in different industrial sectors at a lower cost. However, when the components manufactured demand high dimensional and geometric requirements, they must be subjected to machining processes that cause damage to the material. As a result, alternative methods to conventional machining are increasingly being proposed. In this article, the abrasive waterjet machining process is proposed because of its advantages in terms of high production rates, absence of thermal damage and respect for the environment. In this way, it was possible to select parameters (stand-off distance, traverse feed rate, and abrasive mass flow rate) that minimize the characteristic defects of the process such as taper angle or the identification of different surface quality regions in order to eliminate striations caused by jet deviation. For this purpose, taper angle and roughness evaluations were carried out in three different zones: initial or jet inlet, intermediate, and final or jet outlet. In this way, it was possible to characterize different cutting regions with scanning electronic microscopy (SEM) and to distinguish the statistical significance of the parameters and their effects on the cut through an analysis of variance (ANOVA). This analysis has made it possible to distinguish the optimal parameters for the process.

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Section: Analysis Of Contour Graphs For Significant Parametersmentioning

confidence: 99%

Defect Analysis and Detection of Cutting Regions in CFRP Machining Using AWJM

et al. 2019

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“…These experiments were conducted by considering two different pressures of water, two different abrasive mass flow rates, five different traverse speeds and three different mesh sizes of abrasive particles, so as to produce kerfs with different depths. The particle size distribution in each mesh size and the average diameter of abrasive particles were obtained from the works of Chetty and colleagues, 35,36 since the same type of garnet was used in these experiments.…”

Section: Methodsmentioning

confidence: 99%

“…Moreover, sharper particles also tend to be much smaller than the average diameter of particles and do not contribute significantly to the material removal. 1,35–37…”

Section: Theoretical Analysismentioning

confidence: 99%

Boundary condition for deformation wear mode material removal in abrasive waterjet milling: Theoretical and experimental analyses

Srikanth

Babu

2017

Proceedings of the Institution of Mechanical Engineers, Part B:

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Producing quality features with abrasive waterjet milling requires the generation of shallow kerfs with low surface waviness. Typically, such kerfs are produced by deformation wear mode of material removal realized with certain combination of process parameters chosen based on an elaborate experimental analysis. Instead, these parameters can be selected through a modeling methodology developed based on deformation wear erosion theory. As a first part of this development, it is essential to identify the conditions for the prevalence of deformation wear during the generation of shallow kerfs with abrasive waterjets. To establish this condition, this article presents a theoretical analysis of kerf formation formulated based on deformation wear erosion by solid particles. In this analysis, the interaction of the abrasive particles with the material and the subsequent material removal through deformation wear is considered to define the geometry of the cutting front. The geometry of the cutting front was then used to determine the condition at which local impact angle of abrasives striking the cutting front changes to alter the mode of material removal from deformation wear to cutting wear. This analysis has brought out the boundary condition for deformation wear as the maximum depth of kerf to be equal to the average size of the abrasive particles used in the jet. The generic nature of this condition is established with kerfing experiments over three different ductile materials.

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“…Although this process possesses various tangible benefits such as precise machining, high productivity, and versatility to cut DTM materials, a significant portion (approximately 50%) of the operating cost of AWJM goes to the buying, feeding, treatment, and recycling of abrasive particles. 54,55 Moreover, in some applications such as food processing and bio-medical field, the problem of high contamination of the abrasive particles to the work surface arises. This requires sustainable innovations in AWJM technology so as to minimize its environmental footprints and cost, simultaneously ensuring the best quality machining.…”

Section: Nonconventional Machining and Sustainable Productionmentioning

confidence: 99%

Developments in nonconventional machining for sustainable production: A state-of-the-art review

Gupta

2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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Nonconventional or advanced machining processes such as electric discharge machining, electrochemical machining, abrasive water jet machining, and laser beam machining have been widely used as a viable alternate to the conventional processes to manufacture high-quality engineered parts having certain typical features. In spite of their special features, wider acceptance, and use, they suffer from certain inherent limitations with regard to sustainability such as high consumption of energy and resources; generation of toxic liquid, gases, and solid wastes; risk for health and safety; air pollution; generation of waste and its disposal problems; and workpiece contamination and thermal damage to the parts being produced. It is found that these factors all adversely affect the environment to a certain extent. Innovative sustainable techniques such as dry, near-dry, and green electric discharge machining; green and hybrid electrochemical machining; ice-jet machining; and eco- and underwater laser beam machining, etc. have been developed to address sustainability challenges and greatly benefited with improvements in quality, productivity, and sustainability. This review article first introduces four major nonconventional machining processes, discusses their inherent sustainability issues and challenges, and presents state-of-the-art review of the work conducted using sustainable innovative techniques and strategies with an aim to encourage academics, researchers, and engineers for research and developments in order to establish the field further. The literature review offered in this article is based on over 80 articles published from 1975 to 2017. Finally, the article ends up with concluding remarks and recommending possible avenues to stimulate future research.

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A study on recycling of abrasives in abrasive water jet machining

Cited by 80 publications

References 5 publications

Defect Analysis and Detection of Cutting Regions in CFRP Machining Using AWJM

Defect Analysis and Detection of Cutting Regions in CFRP Machining Using AWJM

Boundary condition for deformation wear mode material removal in abrasive waterjet milling: Theoretical and experimental analyses

Developments in nonconventional machining for sustainable production: A state-of-the-art review

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