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ArticleName Technological modes of obtaining a qualitative castings from aluminium alloys by LFC method
DOI 10.17580/tsm.2015.10.04
ArticleAuthor Deev V. B., Kutsenko A. I., Ponomareva K. V., Mishurov S. S.

National University of Science and Technology “MISiS”, Moscow, Russia:

V. B. Deev, Chief Researcher of Engineering Center “Casting Technologies and Materials”, Professor of a Chair of Casting Technologies and Art Material Treatment, e-mail:
S. S. Mishurov, Head of Department of Engineering Center “Casting Technologies and Materials”

Siberian State Industrial University, Novokuznetsk, Russia:

A. I. Kutsenko, Assistant Professor, Head of Scientific Research Department

K. V. Ponomareva, Senior Lecturer of a Chair of Material Science, Casting and Welding Engineering


Nowadays, lost foam casting is a prospective and efficient method of obtaining a high-quality thin-section castings, having different purpose. However this method is caharcterized by various factors of production process, defining the inevitable optimization of technological casting conditions. Various factors of the process lead to its more difficult control and accounting of undesirable changes in production parameters. As a result, this may lead to increased level of casting defects. Using the binary logistic regression method, there were defined the types of efficient technological modes (parameters of smelting and melt casting in mold, the part of secondary materials in charge composition), providing the absence of casting defects during realization of resource-saving technologies and obtaining a qualitative castings of gas analyzer shell covers (made of AK7 alloy) by lost foam casting method in real production conditions of Scientific and Industrial Enterprise “Vektor Mashinostroeniya”. A great attention is paid to the temperature overheatings and melt holding during melting, which alloys to correct the percent content of secondary raw materials in varying degree during the obtaining a thinsection castings. The choice of one or another type of technological melting and casting mode and content of secondary materials in charge is substantiated by the market price for the charge materials and electric energy, providing the minimal cost price of acceptable casting. Application of binary logistic regression is reasonable mostly for the castings, characterized by qualitative but not quantitative indicators of production process. At the same time, there is no difference in the number of researched and calculated qualitative indicators, which is very important for real technological processes of production in industrial casting technologies.
This work was carried out within the Agreement No. 14.578.21.0039 (unique identifier of the project is RFMEFI57814X0039) about the subsidization of the Ministry of Education and Science of Russian Federation.

keywords Casting, aluminium alloy, logistic regression, gazificated models, resource-saving, surface purity, dimensional accuracy

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