Kinetics of hardening of ceramic layers applied in the investment patterns method
Journal Title: Archiwum Odlewnictwa - Year 2009, Vol 9, Issue 2
Abstract
The work presents results of investigations of a hardening rate of ceramic moulds applied in investment patterns method. During the studies, the original method based on the ultrasonic technique, and a novel testing routine were used. The course of hardening of single ceramic layers, and subsequently applied layers was determined. The investigations concerned ceramic mixtures with a binder based on water colloidal silica and Al2O3 matrix. The effect of ceramic layer thickness on its hardening at temperature; T = 23-24oC and, air relative humidity; RH = 45-55% was determined.
Authors and Affiliations
J. Zych, H. Matysiak
The Dependence of Castings Quality Produced in Clay Moulding Mixtures from the Properties of Binder Based on a Montmorillonite
Casting quality depends on many factors including the quality of the input materials, technology, material securing and last but not least, the mould into which the casting is casted. By pouring into a single-shot mould,...
Plasticity of the AlSi9Mg alloy modified with Na, F and Cl compounds
This paper presents the results of an experiment investigating the structure and the percent elongation of an AlSi9Mg alloy modified with NaCl, Na3AlF6 and NaF compounds. The alloy was modified in a crucible. The experim...
Quality stabilisation of synthetic sand containing bentonite in process lines
Stabilisation of sand quality requires the monitoring and control of sand moisture contents and its other parameters at each stage of sand processing, i.e. during the preparation of return sand mix and rebonding processe...
Abrasive wear resistance of high-vanadium cast iron
The study presents the results of tribological tests made on Fe-C-V and Fe-C-V-Si alloys undergoing volume solidification and containing carbon in a range of 1,43-2,58%, vanadium in a range of 5,34-14,77%, and silicon in...
Unconventional methods of reclamation of used moulding sands
Analysis of the literature provides information on a constant search for new ways of regenerating of moulding sand deprived disadvantages of existing solutions, especially in the case of low efficiency of regeneration of...