Alumina Moulds on Alumina-Boron-Phosphate Concentrate in Investment Casting

Abstract

Casting technology of ceramic alumina moulds on alumina-boron-phosphate concentrate is developed. This technology is an alternative to ethyl silicate and silicate systems of forming. It allows to improve the complex of physical and mechanical properties of ceramic moulds in investment casting. This results in improvement of the quality of investment castings of chemically active alloys