PRODUCTION ENGINEERING MEASURE X-Y FLEXURE MODE CRYSTAL UNITS CR(XM-32)/U, CR(XM-33)/U, CR(XM-34)/U, CR(XM-35)/U
Abstract
Research was concerned with the surface finish that was obtained from using a 400 grit resinoid bonded wheel installed on a Norton vertical spindle surface grinder. Though the faces appeared polished when the table feed was very slow and the amount being removed was minimal, the surfaces still had a streaked appearance when viewed in glancing incident light. Further experiments with a finer grit wheel resulted in what was felt to be the best diamond finish obtainable. When the diamond edged units were processed the resistance of the surface plating was higher than anticipated. The evaporated silver layer was made heavy and an electroplated nickel overlay was used to achieve low dc resistance. Chemical deposition of silver resulted in good plating when measured by dc resistance. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 24, 1961
- Accession Number
- AD0267784