Present status and some critical issues of abrasive jet materials processing: a review

Haldar, B.C.; Adak, Deb Kumar; Ghosh, D.; Karmakar, Arjun; Habtamu, E.; Ahmed, M.; Das, Santanu

doi:10.1016/j.promfg.2018.02.078

Cited by 7 publications

(6 citation statements)

References 38 publications

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“…The appearance of the SEM images is similar to those obtained in other works [41,42], for comparable abrasives used, and is compatible with the previously developed cutting models [40,43].…”

Section: Sem Imagessupporting

confidence: 86%

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Experimental Study for the Stripping of PTFE Coatings on Al-Mg Substrates Using Dry Abrasive Materials

et al. 2020

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Polytetrafluoroethylene (PTFE) coatings are used in many applications and processing industries. With their use, they wear out and lose properties and must be replaced by new ones if the cost of the element so advises. There are different stripping techniques, but almost all of them are very difficult and require strict environmental controls. It is a challenge to approach the process through efficient and more sustainable techniques. In the present work, we have studied the stripping of PTFE coatings by projection with abrasives (1 step) as an alternative to carbonization + sandblasting procedures (2 steps). For this purpose, different types of abrasives have been selected: brown corundum, white corundum, glass microspheres, plastic particles, and a walnut shell. The tests were performed at pressures from 0.4 to 0.6 MPa on PTFE-coated aluminium substrates of EN AW-5182 H111 alloy. Stripping rates, surface roughness, and substrate hardness have been studied. Scanning electron microscopy (SEM) images of sandblasted specimens have also been obtained. All abrasives improved mechanical and surface properties in one-step vs. two-step processes. The abrasives of plastic and glass microspheres are the most appropriate for the one-step process, which increases the hardness and roughness level Ra in the substrate. Corundum abrasives enable the highest stripping rates.

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Section: Sem Imagessupporting

confidence: 86%

“…The values, levels, and models of the increase in hardness and mechanical resistance that are achieved in the alloy studied are described in various models on projection with abrasives [39,40]. The results of the proposed work corroborate the increase.…”

Section: Hardness Of Substratessupporting

confidence: 52%

Experimental Study for the Stripping of PTFE Coatings on Al-Mg Substrates Using Dry Abrasive Materials

et al. 2020

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“…), and post-processing (hard surface removal of casting surface, dry polishing, deburring). The material removal using an abrasive jet is caused by erosion [1,2] and provides several benefits, such as the ability to produce roughly smoothened surface finishes and cut ductile to brittle and heat-sensitive delicate materials safely. An abrasive jet is mostly used to machine brittle materials more effectively since it is flexible and produces less heat.…”

Section: Introductionmentioning

confidence: 99%

“…According to Melentiev et al [5], the abrasive jet system shifted from a macro-to a micro-zone after continuous development. An abrasive jet was used to clean the rusty and greasy surface of the substrate before welding since it is quicker and more effective than other surface cleaning procedures like grinding, filing, etching, and so on [1]. Additionally, AJM was carried out using an effective dust-collecting system, which allows for smooth operation and the elimination of environmental loading issues [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Surface Preparation for Coating and Erosion MRR of SS 304 Using Silicon Carbide Abrasive Jet

Adak

Pal²,

Das³

et al. 2022

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The surface preparation of shiny stainless steels is a must for applying esthetic paints, effective functional plasma spray coating, laser cladding, welding, etc., applications. The current work aims for effective surface roughening and erosion MRR of SS 304 work surface using SiC abrasive jet erosion and optimization of the process parameters. The response surface approach is used to design and conduct the studies using the Box–Behnken design method. The surface topography of the eroded surfaces is examined by a 2D profilometer, 3D profilometer, and scanning electron microscope (SEM). The abrasive grit size and working gas pressure greatly affect the surface roughness of SS 304 samples. The influence of the process parameters on the variation of these topographical features is analyzed and confirmed. The working jet pressure is seen to significantly impact erosion MRR. The lower working gas pressure shows a typical influence on Ra (surface preparation) and as pressure increases, erosion MRR rises, and the surface preparation mode shifts to the erosion metal removal/cutting zone. The quality of SS 304 surface prepared from SiC abrasive jet impact is characterized by 3D profilometry.

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“…Another advantage over SLA includes the ability to print large scale objects without having to compromise on resolution. The produced components are able to be used as a functional industrial prototype [110].…”

Section: Materials Jettingmentioning

confidence: 99%

Investigation into Additive Manufacturing for Controlling Thermal Expansion in Optical Applications

Milward¹

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The design of components for the optical industry requires a consideration into the thermal expansion co-efficient of the materials used. Often the body material of an optical system exceeds the thermal expansion of the lens material. This can lead to lens decentre and misalignment. This thesis will investigate the use of additive manufacturing to tailor the thermal expansion co-efficient of the parts produced so that they match the thermal expansion co-efficient of the lens material. Several state-of-the-art additive manufacturing methods are investigated to achieve this. These include metal laser powder bed fusion, polymer fused deposition modelling, and continuous fibre re-enforced polymer fused deposition modelling. A method used to tailor the co-efficient of thermal expansion focuses on the design of the components, while another method focuses on the adjustment of the materials used. The design of an optical system features two metals with different thermal expansion co-efficients which work together to produce a different overall thermal expansion co-efficient similar to the lens material. Another method investigates the use of the low expansion invar alloy, and the controlled expansion aluminium - silicon alloy. Adjusting the elemental constituents by mixing the alloy powders with elemental powders has shown to successfully change the overall constituents of the printed alloy, opening up the avenue for tailoring thermal expansion in-situ with the build process. A promising method of controlling thermal expansion with polymers is shown by introducing inclusions into the polymer filament feedstock material. The introduction of carbon and glass fibres as well as metal and organic particles shows a remarkable ability to adjust the co-efficient of thermal expansion over a wide range. Using a fibre polymer printer, a composite can be printed with a layer of carbon, glass, or Kevlar fibre laid in a predetermined orientation. This method provides the widest range of thermal expansion control.

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Present status and some critical issues of abrasive jet materials processing: a review

Cited by 7 publications

References 38 publications

Experimental Study for the Stripping of PTFE Coatings on Al-Mg Substrates Using Dry Abrasive Materials

Experimental Study for the Stripping of PTFE Coatings on Al-Mg Substrates Using Dry Abrasive Materials

Surface Preparation for Coating and Erosion MRR of SS 304 Using Silicon Carbide Abrasive Jet

Investigation into Additive Manufacturing for Controlling Thermal Expansion in Optical Applications

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