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

Abstract

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.

Biosynthesis-Based Al2O3 Nanofiller from Cymbopogon citratus Leaf/Jute/Hemp/Epoxy-Based Hybrid Composites with Superior Mechanical Properties

“…Furthermore, 3 wt. % Al 2 O 3 loading throughout jute/hemp/epoxy may result in primary Al 2 O 3 aggregates causing tension force via fracture diagnosis [ 36 , 37 ]. This incidence has also resulted in harmful forces applied from the interlayer to natural fabrics or emulsifiers, likely to result in material property degradation.…”

Biomechanical investigation of tasks concerning manual materials handling using response surface methodology

“…The seven inertial sensors, ELECTRON, FAX, GEO, HELIO, INDIE, JAVA and KARENAI, were mounted respectively on the body landmarks—sacrum, right thigh, left thigh, right leg, left leg, right foot and left foot, using straps as per the lower body gait protocol specified for iSen software. The sensor placement as per the protocol 36 , 37 is depicted in Fig. 3 .…”

Studies on the mechanical and thermal stability of Calotropis gigantea fibre-reinforced bran nano particulates epoxy composite

“…The water retting process was used to extract the madar fibre, which means water can enter the stem's central part, swelling the internal cells and causing the plants' outer covering to break 21 . The presence of bacteria and moisture in plants causes vast sections of cellular tissues and sticky compounds that wrap fibres to be broken down, separating individual fibres from the plant, and madar fibre has been censored to chopped type for fabrication of composite 22 . The general properties of madar fibres are the tensile strength is 5.8 MPa, Young’s modulus is 1.3 GPa, and density is 1.67 g/cm 3 and to expand the characteristics of the hybrid composite, bran nanofillers with a particle size of 100 μm (average) and density is 0.25 g/cm 3 utilised as a filler ingredient 23 .…”