Jul
11
2007
Melting methods and materials
Advances in the melting of high quality grey iron automotive castings at Precision Disc Castings.
M P Macnaughtan*, D Eggleston and N Richardson**
* Eurac Ltd, UK, ** Precision Disc Castings Ltd, UK.
Pressures on the castings industry caused by significant increases in raw
material prices during 2004 resulted in Precision Disc Castings performing
an evaluation of the melting of grey cast iron in their UK foundry.
Variables inherent in the melting process, melter charging sequence,
furnace additions and inoculating materials were evaluated using thermal
analysis techniques. Process variables were understood, and procedures
introduced ...
Jul
11
2007
Light alloys
Influence of viscosity-increasing processes on metal foam stability.
Kota Kadoi, Mitsukaze Tayama, Hideo Nakae
Material Science and Engineering, Waseda University, Japan. 67th World Foundry Congress
The significant features of closed cell aluminum foams are their low
density, high energy absorption, etc. These characteristics are affected by
the size of the foams, namely, the smaller the better. Generally, the low
surface tension and the high viscosity of liquid metals can be appropriate
for the production of fine metal foams. Therefore, it is necessary to study
the effect of the viscosity on the stability of the foams. In this paper...
Jul
11
2007
The foundry industry and the environment
Development of Coke Alternate Material Using Woody Biomass.
Yasufumi YAMAGUCHI, Shoji KIGUCHI and Hirotoshi Murata
Faculty of Science and Engineering, Kinki University;Naniwa Roki Co.,Ltd. 67th WFC
In the foundry industry, the price of coke rose greatly as well as the
inflationary prices of a recent raw material in these 1 or 2 years. As a
result, it is greatly influenced that the manufacturing cost increases, the
decrease in the competitive edge of the product and the decrease in rate
of profit.
Therefore, it is required to use a cheap material to decrease the ratio of
coke even a little. So far, it has been much reported that the...
Jul
11
2007
Cast iron
Study of the occurrence and suppression of metal reoxidation in ferrous castings.
T.Elbel*,J.Senberger**,A.Zadera**,L.Kocian*.
VSB – Technical University of Ostrava, CZ, ** Brno University of Technology, CZ. 67th WFC
Recent advances in understanding the processes of casting metals into
green sand moulds have shown that the occurrence of reoxidation plays a
key role in the control of the quality of castings. The reoxidation gives rise
to solid, liquid and gas products that may further react with the metal and
foundry mould, and with various surface and internal defects appearing in
the casting. The resultant occurrence of casting defects is affected by...
Jul
11
2007
Light alloys
Effect of grain refinement on the mechanical properties of magnesium and its alloys.
Yun Sung Han
Ulsan Innovation Industrial Agency. 67th World Foundry Congress
The majority of magnesium components is generally used in the
automotive and electronic industries by conventional casting process.
However, there is a strong need to develop high strength casting alloy for
wide-spread application of Mg alloys. The present study was carried out to
investigate the influence of Al-3%Ti-0.15%C and Al-5%Ti-1%B master
alloys on the grain structure and mechanical properties of high purity
magnesium, Mg-9Al-1Zn...
