Abstract
The orthopedic stent wire is one of the critical medical components, which is mainly used for the replacement of physically damaged parts in the human body. Therefore, a smooth surface and lack of toxic substances on the surface of this component are highly demanded. In this study, a magnetic abrasive finishing (MAF) process was carried out using a non-toxic abrasive compound (a mixture of iron powder, diamond particles, cold cream, and eco-friendly oils) to achieve high-quality surface finishing of orthopedic stent wire. The surface roughness (Ra) of the stent wire was investigated according to various processing parameters: different rotational speeds (500, 1000, and 2000 rpm), diamond particle sizes (1.0 µm), and three eco-friendly oils (olive oil: C98H184O10; grapeseed oil: C18H32O2; and castor oil: C57H104O9) within 300 s of the finishing time. The results showed that the surface roughness of the wire was reduced to 0.04 µm with a rotation speed of 1000 rpm and a diamond particle size of 1 µm when using grapeseed oil. SEM microimages and EDS analysis showed that the MAF process using a non-toxic abrasive compound could improve the surface quality of orthopedic Ni-Ti stent wire with a lack of toxic substances on the surface finish.
Highlights
IntroductionPublisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations
MLofofeco-friendly eco-friendlyoiloil (Table addition of eco-friendly processing and cold cream oils and cold cream (Bioderma-ABCDerm product) to the magnetic abrasive compound mixture helped reduce (Bioderma-ABCDerm product) to the magnetic abrasive compound mixture helped reboth the friction force and the high temperature that occurred during the magnetic abrasive finishing (MAF) process, duce both the friction force and the high temperature that occurred during the MAF proresulting in the production of a smooth surface for the orthopedic stent wire without toxic cess, resulting in the production of a smooth surface for the orthopedic stent wire without substances on the finished surface
2000 rpm, the centrifugal force acting on the abrasive particles was increased, which caused the displacement of the abrasive particles from the finished areas, resulting in a low caused the displacement of the abrasive particles from the finished areas, resulting in a surface roughness
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. The MAF process generally uses a mixture of abrasive particles This magnetic abrasive compound has the advantage of improving bon nanotube (CNT) abrasive, and Al2 O3 abrasive), iron powder, and industrial oil [13,14]. Combination cannot be used for machining the surface of biomaterials, such as Ni-Ti wire, These components remain on the workpiece surface or have direct or indirect harmful because the abrasive particles and industrial oils are toxic to humans. The diamond particles, cold cream, and eco-friendly oil to achieve a high surface finish on the MAF process uses a non-toxic abrasive mixture of iron powder, diamond particles, cold. (a) Photograph of the magnetic field rotating system. (b) Front view of the finishing part
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