KNOWLEDGE development and interchange

Oct 30 2007

Mould and coremaking
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

Metal matrix 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

Metal matrix 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

Health and safety
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

Finishing and inspection
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 ...