The investigations of binder for investment casting

Bulat M. Karimov; Lenar R. Kharisov; Nikolay N. Safronov

Bulat M. Karimov Kazan Federal University
Lenar R. Kharisov Kazan Federal University
Nikolay N. Safronov Kazan Federal University

Keywords: Casting, investment casting, binder, ethyl silicate, surface quality of castings.

Abstract

The paper presents a study of binders of different composition for investment casting, which are safe from the point of view of ecology and safety for human life and health, have a long life-span, stable properties, provide increased gas permeability of forms and a lesser tendency to cracking, and as a result, ensure the production of quality castings. The proposed binder can be used on a par with the traditional, if you introduce spirit into it as a solvent. The introduction of acetone is impractical, because it promotes gelation of the solution, which makes it difficult to continue working with the binder. The gelling process is the coalescence of colloidal particles which causes an increase in the viscosity of the solution. The proposed binder has the following advantages over the traditional ones: it is water-based, non-flammable, non-toxic, environmentally safe; suspensions based on them have longer vitality, more permanent properties and require minimal maintenance; provide increased gas permeability of forms and their less tendency to cracking.

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Author Biographies

Bulat M. Karimov, Kazan Federal University

Kazan Federal University

Lenar R. Kharisov, Kazan Federal University

Kazan Federal University

Nikolay N. Safronov, Kazan Federal University

Kazan Federal University

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