Abstract
Abrasive Flow Finishing of Stainless Steel 304 Biomedical Devices
Highlights
Precision in mechanical parts is such an important property that no part could be used without desired precision
After finishing all pieces with magnetorheological abrasive flow finishing (MRAFF), surface roughness was measured with Mahr Surfanalyzer PS1 for each piece to demonstrate effect of finishing parameters on final surface roughness
As possible errors in measurement are inevitable using a roughness meter due to probable cross of stylus over deep grooves made through grinding for workpiece preparation, a scanning electron microscopy (SEM) micrograph is provided for each workpiece to ensure measured values
Summary
Precision in mechanical parts is such an important property that no part could be used without desired precision. Some new techniques are introduced to solve this problem that are based upon chemical abrasion or bonding of multi cutting edges, either with pressure and flow or magnetically [26,27] One of these methods is abrasive flow machining (AFM) [28] that finishes a surface by flow of an abrasive medium. A new setup was designed and fabricated for the experiments that has a little difference with previous models and some advantages such as lower fabrication cost, portability and easy workpiece change In this hydraulic-mechanic set, a hydraulic power unit and a mechanical part with a spring backstroke provide needed pressure in the finishing process.
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