EVALUATION OF RMSP TUNGSTEN SHEET.
Abstract
Further study was conducted to determine the formability behavior of RMSP tungsten sheet using a variety of shop processes. Additional forming parameters were established for deep drawing and dimpling. The results of the dimpling tests on 0.010- and 0.020-inch sheet to produce 0.125-, 0.156- and 0.187-inch diameter dimples at 1200 F to 1850 F using a resistance-heated, triple-action dimpler were unsuccessful. Forming trials were conducted on the deep drawing of 0.06- and 0.100-inch RMSP tungsten cups using progressive drawing techniques with a two-stage, single-action die. The results of these studies indicate that small deep-drawn cups can be produced from tungsten sheet using multi-stage, single-action dies. The joining of tungsten sheet by resistance spot weld brazing with interleaves of 0.002-inch tantalum and molybdenum foils was evaluated. This method of joining tungsten sheet is currently not considered to be a satisfactory joining technique for obtaining crack free joints for structural applications. The platinum/boron reactive braze system was investigated to determine its suitability for joining RMSP tungsten sheet. Mechanical joining of tungsten sheet using tungsten rivets was attempted. Impacting of the rivet material at elevated temperatures was successful in producing tungsten rivets.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 15, 1964
- Accession Number
- AD0607605
Entities
People
- A. Marchese
- Daniel R. Jones
- F. St. Germain
- G. Prichett
- M. R. Licciardello