Accession Number : ADA324010

Title :   Casting P-900 Armorplate by the Expendable Pattern Casting Process,

Corporate Author : BUREAU OF MINES ALBANY OR ALBANY RESEARCH CENTER

Personal Author(s) : Hansen, Jeffrey S. ; Turner, Paul C.

PDF Url : ADA324010

Report Date : 1992

Pagination or Media Count : 16

Abstract : 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.

Descriptors :   *ARMOR, *STEEL, *CASTING, DAMAGE, VACUUM, ALUMINUM, EXPENDABLE, THIN WALLS, SAND CASTING, SLOTTED FLAPS.

Subject Categories : Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE