PRODUCTION ENGINEERING MEASURE FOR POLYOPTIC SEALING OF HYDROGEN THYRATRON TUBES

Abstract

Polyoptic Sealing: During the observations made to determine the influence of polyoptic fit on exhaust pressure, it was found that cleanliness of fit and intimacy were considerably more important to the vacuum tightness than the perfection of spherical shapes. That is between 8 fringes large and 5 fringes small button spherical diameter. The polyoptic assembly procedure has been changed such that an intermolecular bond must be achieved during assembly, prior to sealing. Life Testing Polyoptic Tubes: Preliminary life testing of lot B, sealed during this quarter, indicates a general reduction in life from what had previously been considered as normal life expectancy for polyoptic sealing. No seal failures were observed. Comparative Life Testing Of Flame Sealed Tubes: Due to the fact that only a limited quantity of tubes were tested for 500 hours, no conclusions can be drawn at this time. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 28, 1962
Accession Number
AD0282892

Entities

People

  • G.h. Dixon

Tags

DTIC Thesaurus Topics

  • Assembly
  • Diameters
  • Engineering
  • Hydrogen
  • Manufacturing
  • Mass Production
  • Observation
  • Production
  • Production Engineering
  • Production Management Methods
  • Productivity
  • Thyratrons
  • Tightness

Readers

  • Software Engineering
  • Thermal Physics or Thermal Science.