Open AccessTO THE QUESTION ABOUT THE ROLE OF WATER IN THE PRODUCTION OF CASTING FORMS AND RING ONE-TIME APPLICATION
Author(s) -
И. О. Леушин,
А Н Грачев,
Л. И. Леушина,
A. I. Markov
Publication year - 2020
Publication title -
izvestiâ volgogradskogo gosudarstvennogo tehničeskogo universiteta
Language(s) - English
Resource type - Journals
ISSN - 1990-5297
DOI - 10.35211/1990-5297-2020-7-242-10-14
Subject(s) - foundry , casting , mold , production (economics) , core (optical fiber) , process (computing) , molding (decorative) , process engineering , near net shape , water content , manufacturing engineering , computer science , mechanical engineering , environmental science , materials science , engineering , metallurgy , composite material , geotechnical engineering , economics , macroeconomics , operating system
The production of single casting molds and cores is still relevant and will not lose its practical significance in the foreseeable future. In the vast majority of cases, the technology for the production of single molds and cores involves working with mixtures containing water. In this regard, the role of moisture in the composition of molding and core mixtures is difficult to overestimate. Among its main functions is to impart plasticity, fluidity, formability, and survivability to the material when it is loaded into the working cavity of the technological tooling. Water takes part in almost all processes of a physical and chemical nature occurring in foundry molds and cores, both at the stages of their manufacture and during application. However, to ensure the necessary characteristics of the casting mold or core and further casting quality, the water content in the composition of the mold or core should change at various stages of the manufacturing process. For this reason, manufacturers are faced with a number of issues related not so much to determining the optimal quantitative range of water content in the material of the mold or core, but to retention mechanisms and methods for removing water and the choice of methods for their practical implementation to increase the controllability of the process. This problem is the focus of attention in this article.