Accession Number:

AD0257653

Title:

SCIENTIFIC REPORTS OF HIGHER SCHOOLS, MACHINE CONSTRUCTION AND INSTRUMENT CONSTRUCTION (SELECTED ARTICLES)

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1961-01-10

Pagination or Media Count:

1.0

Abstract:

CONTRIBUTION TO THE THEORY OF PACKING FOUNDRY MOLDS, by G. F. Balandin The preparation of sand molds with a clay-water binder is described and the mechanism of packing the mixture is analyzed. Equations are derived for the determination of the energy or work expended in filling a 250-x 250-x 100-mm mold box with a mixture containing 15 clay and 5.3 water. Good correlation was obtained between calculated and experimental data. EVALUATING THE PRECISION OF CASTINGS, by Yu. A. Vorobyev The development of modern machine construction is characterized by refinements in the precision of the processing of castings, from the cast billet to the machined component. The extension of engineering standards established for machining operations to the foundry industry are discussed. Results are reviewed of an investigation for the purpose of establishing precision standards for castings of non-ferrous alloys.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE