Thermal aspects of temperature transformations in silica sand
Journal Title: Archiwum Odlewnictwa - Year 2010, Vol 10, Issue 3
Abstract
Problems related with the choice of moulding sand composition considering its behaviour in contact with molten metal were discussed. The investigations of high-temperature phenomena enable moulding sand composition to be evaluated in terms of its applicability under the specific conditions of a foundry shop. It is also possible to eliminate the casting defects related to moulding sand and its properties. The investigations were carried out on selected moulding sands from the family of the traditional carbon-free moulding mixtures. The effect of moulding sand composition and moisture content on the linear dilatation and stress formation caused by an allotropic quartz transformation was determined. The investigated phenomena were analysed on 3D diagrams plotted from the test data. A strong effect of the beta quartz - alpha quartz transformation at a temperature of about 6000C was stated.
Authors and Affiliations
J. St. Kowalski
Keywords
Related Articles
- EP ID EP72148
- DOI -
- Views 74
- Downloads 0
Quality management as a tool forming foundry competitive capacity in the process of market globalisation
This paper presents the analysis and identification of the key factors influencing the competitiveness of the foundry in the process of market globalisation. The main attention is paid to the quality management as an imp...
Determination of Weibull Analysis of the Hypereutectic Silumins Reliability in Failure Time Respect
The results of dynamic evaluation of the reliability of hypereutectic AlSi17Cu3NiMg silumin under the effect of symmetrical cyclic tensile-compressive stresses were presented. Studies were carried out on a normal-running...
A possibility of Business Rules application in production planning
The complexity of scheduling problems in production systems and their impact on production functioning (in the area of technology and economics) cause that it is necessary to search for and develop new methods and algori...
Influence of the heat treatment on the microstructure and properties of austenitic cast steel
Exploitation investigations of a centrifugally cast pipe of austenitic cast steel indicated a significant influence of its microstructure on functional properties. Determination of the possibility of forming the microstr...
Effect of dispersion hardening on impact resistance of EN AC-AlSi12Cu2Fe silumin
Development of modern technology have generated supply of better and better, more resistant structural materials not attainable earlier. Weight of metal structures is of a great importance, and as a consequence, also wei...