National Technical Reports Library - NTRL

National Technical Reports Library


Details
Actions:
Download PDFDownload XML
Download

Casting P-900 Armorplate by the Expendable Pattern Casting Process.


PB93132009

Publication Date 1992
Personal Author Hansen, J. S.; Turner, P. C.
Page Count 14
Abstract Constant research and development on armorplate for armored military vehicles is required to shield troops against new ballistic threats. The U.S. Army Tank and Automotive Command requested that the U.S. Bureau of Mines assist in research on P-900 armor because of previous Bureau research on innovative expendable pattern casting (EPC) methods of casting steel. The Bureau of Mines developed a system for casting unique, slotted steel armor by modifying the conventional expendable pattern casting (EPC) process that is normally used for making aluminum castings. Three innovations were added to the EPC process to make the successful adaptation: (1) Vacuum was applied to sand molds, (2) continuous narrow-necked feeding systems were used to permit the casting of thin walls, and (3) fixtures were designed to prevent pattern damage and to hold critical casting tolerances. Potential problems and defects are described.
Keywords
  • Armor plate
  • Steels
  • Patterns
  • Casting
  • Foundry practice
  • Molding techniques
  • Molds
  • Sand casting
  • Castings
  • Molding materials
  • Armor
  • Expendable pattern casting
Source Agency
  • Bureau of Mines
  • Army
NTIS Subject Category
  • 79B - Armor
  • 71J - Iron & Iron Alloys
Corporate Authors Bureau of Mines, Albany, OR. Albany Research Center.
Supplemental Notes Library of Congress catalog card no. 92-23266.
Document Type Technical Report
Title Note Rept. of investigations/1992.
NTIS Issue Number 199305
Casting P-900 Armorplate by the Expendable Pattern Casting Process.
Casting P-900 Armorplate by the Expendable Pattern Casting Process.
PB93132009

  • Armor plate
  • Steels
  • Patterns
  • Casting
  • Foundry practice
  • Molding techniques
  • Molds
  • Sand casting
  • Castings
  • Molding materials
  • Armor
  • Expendable pattern casting
  • Bureau of Mines
  • Army
  • 79B - Armor
  • 71J - Iron & Iron Alloys
Loading