Development of the manufacture of billets based on high-strength aluminum alloys

When pressure is applied upon casting as a factor of external impact on melt, the problems related mainly to filling of molds are solved; however, some casting defects cannot be avoided. The experimental results demonstrate that complete compensation of shrinkage under pressure can be achieved by co...

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Bibliographic Details
Published in:Russian metallurgy Metally 2017-09, Vol.2017 (9), p.691-695
Main Authors: Korostelev, V. F., Denisov, M. S., Bol’shakov, A. E., Van Khieu, Chan
Format: Article
Language:English
Subjects:
Alloy development
Alloys
Aluminum alloys
Aluminum base alloys
Billet casting
Casting
Casting alloys
Casting defects
Castings
Chemistry and Materials Science
Control equipment
External pressure
Materials Science
Metallic Materials
Pressure casting
Shrinkage
Software engineering
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Summary:When pressure is applied upon casting as a factor of external impact on melt, the problems related mainly to filling of molds are solved; however, some casting defects cannot be avoided. The experimental results demonstrate that complete compensation of shrinkage under pressure can be achieved by compressing of casting by 8–10% prior to beginning of solidification and by 2–3% during the transition of a metal from the liquid to the solid state. It is mentioned that the procedure based on compressing a liquid metal can be efficiently applied for manufacture of high-strength aluminum alloy castings. The selection of engineering parameters is substantiated. Examples of castings made of V95 alloy according to the developed procedure are given. In addition, the article discusses the problems related to designing of engineering and special-purpose equipment, software, and control automation.
ISSN:0036-0295
1555-6255
1531-8648
DOI:10.1134/S0036029517090087