On the use of grains recovered from spent vitrified wheels in resinoid applications

Sabarinathan, P.; Annamalai, V.E.; Kennedy, A. Xavier

doi:10.1007/s10163-019-00927-0

Cited by 12 publications

(3 citation statements)

References 22 publications

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“…8 They have reused the recovered grains in making resinoid grinding wheel. 9 Present work highlights the recycling potential of spent coated abrasive discs from waste to wealth concept.…”

Section: Introductionmentioning

confidence: 94%

Process optimization and removal of phenol formaldehyde resin coating using mechanical erosion process

Palaniyappan¹,

Veiravan²,

Kumar³

et al. 2022

Progress in Rubber, Plastics and Recycling Technology

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Consumption of coated abrasive discs in various automobile and pipe fitting application is increasing, due to its good surface finish. Coated abrasive disc consists of single layer of abrasive grain bonded to a fibre backing. The major portion of the disc is comprised of fibre backing. But the sustainability of the fibre backing is low and is dumped as waste after usage. The present work deals with the removal of resin coating and recovery of fibre backing from the spent coated abrasive discs using physical separation process such as sand blasting technique. Initially, the recovery experiment was carried out based on L16 orthogonal array. The factors and levels chosen for the experiments were erodent pressure (0.2, 0.4, 0.6 and 0.8 MPa), erodent size (36, 60, 80 and 120 grit), disc orientation (30, 45, 60 and 75°) and number of times flexing (5, 10, 15 and 20). The experimental result shows that erodent size and erodent pressure have a major impact on recovery of the fibre backing. The surface structure of the recovered backing was analysed using scanning electron microscopy and optical microscopy. The recovered backing was very much useful for the coated abrasive industry as the flexible backing and support material for abrasive grain coating.

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“…8 They have reused the recovered grains in making resinoid grinding wheel. 9 Present work highlights the recycling potential of spent coated abrasive discs from waste to wealth concept.…”

Section: Introductionmentioning

confidence: 94%

Process optimization and removal of phenol formaldehyde resin coating using mechanical erosion process

Palaniyappan¹,

Veiravan²,

Kumar³

et al. 2022

Progress in Rubber, Plastics and Recycling Technology

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“…Bonded and coated abrasives are the two types of abrasives product. Authors have previously attempted to recycle connected abrasive products such as vitrified [2], resinoid [3] grinding wheels from the flange portion of the spent grinding wheel. Recovering the abrasive grains from the part adds wealth in terms of economics.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on removal of phenol formaldehyde resin coating from the abrasive disc and preparation of abrasive disc for polishing application

Palaniyappan¹,

Annamalai

Vishal

et al. 2022

Advances in Materials Science and Engineering

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In the automotive and aerospace industry, abrasive products lodge the major portion of the machining applications. Among that, the coated abrasive disc is used for a finishing application. Once the disc is fully consumed, the disc is unused and considered waste. The present work focuses on removing phenol-formaldehyde resin coating, and the fiber backing is reused for the same coated abrasive disc production application as flexible fiber backing. A sandblasting technique removes phenol-formaldehyde resin coating and embedded abrasive grains. During the fiber backing recovery process, the experimental parameters such as abrasive pressure, abrasive type, abrasive size, and orientation of the disc are varied to find out the optimal surface roughness value for reusing the produced coated abrasive discs. The results highlight that the recovered backing has an abrasive size of 120 mesh pressure of 0.20 MPa, an abrasive type of garnet, and a standoff distance of 1 mm. Surface features such as surface roughness and micrographs of the eroded surface are analyzed. Finally, the recovered backing was reused in the coated abrasive disc production, and the performance of the recovered disc was compared with the standard discs. The recovered fiber backing disc product was similar to a standard fresh disc.

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“…Belt grinding technology with cold and elastic characteristics can process nearly all engineering materials. It plays an essential role in the machining process of some of the critical components of major equipment in advanced manufacturing technology (Sabarinathan et al, 2020;Zhu and Beaucamp, 2020;Li et al, 2022). For this reason, the industry commonly uses belt grinding and polishing for the final surface treatment of complex curved parts such as hollow titanium blades to regulate their surface integrity.…”

Section: Introductionmentioning

confidence: 99%

Titanium alloys surface integrity of belt grinding considering different machining trajectory direction

et al. 2022

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The interplay of abrasive grains and materials complicates the grinding of titanium alloys by abrasive belts. Notably, the influence relationship of surface generation for complex curved workpieces such as hollow blades needs to be clarified, making precise control of the surface integrity of complex surfaces difficult in abrasive belt grinding applications. This paper thus proposes a trajectory planning method based on the direction of interaction between grinding grains and materials to reveal its influence law on the surface integrity of complex curved surfaces of titanium alloy with unevenly distributed machining allowances. First, a machining trajectory with different angles between the grinding direction and feed direction is proposed. In order to determine the corresponding experimental scheme for titanium alloy hollow blades. Experimental results are used to analyze the influence of different grinding trajectory directions on the surface roughness, residual stress, surface topography, and accuracy of the contours. The results show that different grinding trajectory directions significantly affect the workpiece’s surface integrity. By varying the grinding trajectory direction, it is possible to reduce the surface roughness of titanium alloy workpieces by approximately 40%, increase the surface residual compressive stress by approximately 50%, provide a finer workpiece surface and improve the consistency of the surface texture. This work is expected to guide the efficient and high-quality machining of complex curved parts such as titanium alloy hollow blades.

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On the use of grains recovered from spent vitrified wheels in resinoid applications

Cited by 12 publications

References 22 publications

Process optimization and removal of phenol formaldehyde resin coating using mechanical erosion process

Process optimization and removal of phenol formaldehyde resin coating using mechanical erosion process

Experimental study on removal of phenol formaldehyde resin coating from the abrasive disc and preparation of abrasive disc for polishing application

Titanium alloys surface integrity of belt grinding considering different machining trajectory direction

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