Japanese R&D on new cast alloys and materials Page: 3 of 16
This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to UNT Digital Library by the UNT Libraries Government Documents Department.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
A low-density aluminum curtain wall composite material was produced through
suction casting a mixture of molten aluminum with hollow SiO2 spheres. The spheres were
produced from volcanic sands which are otherwise a waste material.
Similar to the United States, Japan also has growing quantities of radiologically
contaminated scrap metal (RSM). In an attempt to develop controlled reuse opportunities
for such scrap, a process is being developed for production of nodular iron containers from
RSM. The process leads to production of a cylinder without the use of a core through
vertical centrifugal castings. By stopping rotation at a critical time, the remaining unsolidified
metal will drop to form a cast bottom for the cylinder. Figure 1. shows a schematic of the
process. Cylinders having a height of 300 mm, and outer diameters ranging from 176 mm
to 190 mm have been produced from a 196 mm diameter steel mold. Variations in diameter
result from different thicknesses of mold coating which is one of the critical parameters for
the process. Similar results have also been demonstrated for producing cylinders fromaluminum alloy AC4C
(6.7% Si, 0.4% Fe, 0.15%
Cu, 0.06% Mn, 0.35%
Mg, 0.06% Zn, bal. Al)'
A research
program on white cast
iron for rolls is centered
on materials containing
17% Cr, 5% W, 1.4% Si
and 2.5% C.
W o r k o n
directional solidification
processes includes studies
of uni-directionally
solidified W-Cr cast irons
to apply phase selection
criteria to elucidate the
sequence of solidification
of the various carbide
forms (M3C versus
M7C)7. Theoretical
studies of directional
solidification of peritectic
alloys indicate that phase
selection criteria can bens jdfow
' * I
solid
M oid l quMd
igure . Pncip e
Centrifugal Casting.SAND ).ouLD ~
CASTIO SO(IWDARY
BEFORE F~ALLING DO
CASTMN 'BOU1NDARY
AFMFAMM DO
Ti,
0
siEE. MOULD
-aso
o --a nt.e1
of Manufacturing a Cntamer byapplied to project competitive growth processes of stable and
metastable phases during solidification. Potential peritectic systems range from carbon and
Cr-Ni steels, copper alloys, rare earth permanent magnet materials, and high Tc
superconductors".3
Upcoming Pages
Here’s what’s next.
Search Inside
This article can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Article.
Hayden, H.W. Japanese R&D on new cast alloys and materials, article, May 1, 1996; Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc666536/m1/3/: accessed March 28, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.