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Casting P-900 armorplate by the expendable pattern casting process.

Authors
Hansen-JS; Turner-PC
Source
Albany, OR: U.S. Department of the Interior, Bureau of Mines, RI 9436, 1992 Jan; :1-7
Link
NIOSHTIC No.
10011544
Abstract
The U.S. 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.
Keywords
Patterns; Casting; Foundry-practice; Molding-techniques; Molds; Sand-casting; Castings; Molding-materials; Armor; Armor-plate; Steels; Expendable-pattern-casting
Publication Date
19920101
Document Type
IH; Report of Investigations
Fiscal Year
1992
NTIS Accession No.
PB93-132009
NTIS Price
A03
Identifying No.
RI-9436
NIOSH Division
ALRC
Source Name
Albany, OR: U.S. Department of the Interior, Bureau of Mines, RI 9436
State
OR
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