FABRICATION OF FLUERIC AMPLIFIERS BY GLASS DRAWING TECHNIQUES.
Abstract
The report covers a novel process for fabricating subminiature flueric elements. In this process the desired fluid element pattern is formed on a relatively large scale from two types of glass having grossly differing solubilities. The resultant composite glass rod is then reduced in cross-section by drawing, the amount of pattern size reduction being proportional to the degree of rod elongation by drawing. Wafers at various thicknesses (representing various desired nozzle aspect ratios) are sliced from the rod. The soluble glass forming the element pattern is then dissolved and the wafers fitted with end covers and fluid connections to provide functional fluidic elements. The practical capabilities of the glass-drawing process were investigated for low-cost fabrication of miniature fluidic elements with various nozzle sizes. Core fabrication by extrusion, combined gross extrusion and machine grind finishing, and machine grinding alone were attempted. In the core ultimately used to fabricate the final elements for inspection and test, an oversized core section was extruded and ground to final shape and dimensions. Starting with an effective element nozzle width of 0.062 inch, a composite rod was drawn to various reduced dimensions. Functional models at the 0.015-inch nozzle size were made up and tested with satisfactory results. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1968
- Accession Number
- AD0667391
Entities
People
- George W. Goodrich
- Paul T. Higgins
- Walter W. Datwyler