Linear Slide Rails in Ultra-Clean Pharmaceutical Filling Lines
The first design criterion is surface integrity. Standard chrome-plated rails exhibit micro-pores that can harbor bacterial spores or cleaning-agent residues. Instead, rails are machined from 316L vacuum-remelt stainless steel, electropolished to an Ra of 0.02 µm, then passivated in citric acid to remove free iron. This sequence yields a chromium-oxide layer <5 nm thick that withstands...
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