Accession Number:

ADA158325

Title:

Machine Casting of Ferrous Alloys

Descriptive Note:

Semi-annual technical rept., 1 Oct 1975-31 Mar 1976

Corporate Author:

ILLINOIS UNIV AT URBANA DEPT OF MECHANICAL AND INDUSTRIAL ENGINEERING

Report Date:

1976-05-01

Pagination or Media Count:

70.0

Abstract:

This is the first semi-annual report describing research conducted at the University of Illinois at Urbana-Champaign as part of a joint university- industry research program on machine casting of ferrous alloys. Work was performed on the following subjects. A variety of casting systems were designed, constructed, and operated. These included transparent, low and high temperature continuous slurry producers and a laboratory casting machine. Work was carried out to determine the effect of cast Rheocast structure on homogenization heat treatment response and mechanical properties of high temperature alloys. An economic analysis of the new machine casting process was initiated. The NH4Cl- H2O system was Rheocast in the transparent continuous slurry producer. In the alloy systems, increasing the average cooling rate during continuous slurry production reduces the primary solid particle size. High speed motion pictures taken during mold filling of various viscosity fluids in the transparent die casting machine show that transition from spray filling to a solid front fill, at equivalent gate velocities, is accomplished by increasing the kinematic viscosity of the charge material. Microsegregation patterns in Rheocast copper base alloy 905, cobalt base alloy X-40, 304 and 440C stainless steels were determined before and after homogenization heat treatments.

Subject Categories:

  • Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE