Pros and Cons of Bottom Gating

INVESTMENT CASTING INSTITUTE

Technical Conference, November 2005

 

Pros and Cons of Bottom Gating

Commercial and Aerospace Castings

By

Nipendra (Nip) P. Singh

S&A Consulting Group LLP

Cleveland, Ohio USA

 

Abstract

The Bottom Gating of the Investment Cast parts is not a new thing to most of the process engineers in airfoil casting industry. The part configuration and the metallurgical cleanliness of the alloy determined the gating. This became more paramount when airfoil gates were restricted by OEM.

Due to more and more stringent requirements on the commercial casting, few foundries are already using the proven method of this approach which also allows the part to fill and solidify in a controlled process.

This technical paper will examine the pros and cons of the approach with the help of few examples and filling simulation to show the advantages of bottom filling in aerospace and commercial castings.

Author

Mr. Singh was educated in India having received a degree in metallurgy and graduate work in business at Case Western Reserve University, Ohio. He has over 30 years of experience in marketing, product engineering, management and new plant construction, in aircraft engine components and commercial/industrial casting and machining. Mr. Singh is now, Consulting Partner and CEO of S&A Consulting Group and has consulted for over 15 years with multi-national and American companies in the US, Japan, Europe and Asia. Mr. Singh also serves on the board of directors of ICI since 2001.

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