Oct
30
2007
Moldes y machos
Phenolic urethane cold-box binders – A study of global properties, variables, causes and effects
M. Stancliffe
Ashland Casting Solutions, Kidderminster, England
67th World Foundry Congress
The complexity of phenolic urethane cold-box binder materials, properties,
processes and applications around the world make the development of
binders to cover the expanding range of global industry requirements a
challenge. The recent shifts in geographic casting production are
continually raising new combinations of property requirements or more
difficult combinations of conditions under which phenolic urethane coldbox
binders must del...
Oct
30
2007
Composites
Compo-casting method for alumina ceramics inserted in cast iron to reduce thermal stress
Y Tomita *, H Sumimoto * , K Nakamura ** and S kiguchi *
* Kinki University, JAPAN, ** Honorary Professor of Kinki University, Japan
67th World Foundry Congress
The largest problem in compo-casting method is cracking caused by
thermal shock. Although this cracking can be prevented by reducing the
thermal stress by preheating the ceramics, the necessary preheating
temperature is high and its precise control is difficult at practical foundries.
In this study, we tried to estimate numerically the critical preheating
temperature of ceramics using a thermal stress analysis during transient
thermal co...
Oct
30
2007
Composites
Spontaneous Infiltration Mechanism of Al-Si Melt into SiCp Preform
Hideo Nakae*, Yuuji Araoka** and Yuuta Sugiyama**
* Waseda Univ. Japan; **Graduate Students, Waseda Univ.,Japan
67th World Foundry Congress
To produce partially composed metal matrix composites, a new
spontaneous infiltration process was developed. The infiltration process
should be controlled by a wetting phenomenon; therefore, we discussed
how to improve the wettability based on the reactive wetting concept. The
SiC preforms infiltrated at 1173 K without pressure in air using Al-Si-3Mg
melts. The 60mmφ × 30mmh preforms were fabricated using a water glass
b...
Oct
22
2007
Salud y seguridad
New solutions in ductile cast Iron for the retrievable storage of radioactive waste
C Macke-Bart *, G Regheere *, D Linxe * and A Beziat **
* CTIF (Development Centre for Materials Forming Industries), France, ** CEA (French Energy Atomic C
67th World Foundry Congress
Within the framework of the French radioactive waste management act,
the CEA has carried out a major R&D program on long-term interim
storage (temporary deposit) of high-level nuclear waste. The program
concerns container development, design of storage facilities, durability and
functional performance demonstrations.
This article focuses on the high level waste container development.
In addition to the geometry, the essential contain...
Oct
22
2007
Acabados e inspección
Fluidised bed for stripping sand casting process
Guido Belforte, Massimiliana Carello, Vladimir Viktorov
Dipartimento di Meccanica - Politecnico di Torino. 10129 Torino Italy
67th World Foundry Congress
An innovative application of a non-traditional casting system, in particular
a stripping fluidised bed, whose working principle is based on air – sand
interaction phenomenon, is presented. A bed’s prototype used to analyse
the fluidisation phenomena is described.
The purpose of the experimental tests is to measure: pressure, air flowrate
and velocity. Different measurement points inside the prototype have
been taken into ...
