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Heat Treatment Procedure Qualification for Steel Castings

Metal Casting Image The objectives of this project are to develop, test, and validate heat treatment qualification procedures that can be effectively used by steel foundries to assure casting performance for carbon, low alloy and high alloy steels. At the present time, specifications for steel castings do not address the necessary heat treatment procedure control to assure casting performance. This is true for high alloy steel castings where proper heat treatment is the key to obtaining corrosion performance and for carbon and low-alloy steels where proper heat treatment is the key to obtaining mechanical performance. This project will propose simple but robust "heat treatment qualification procedures" that can be performed by foundries to demonstrate and assure casting performance. Steel casting performance can be certified similar to welds (e.g. ASME Boiler and Pressure Vessel Codes and the AWS Structural Welding Code) with the development of simple, appropriate, up-front qualification procedures. These science-based and performance-based test procedures demonstrate that the process control practices used by the foundry can be expected to yield acceptable performance for a class of castings. This will assure the customer that heat treatment controls and specifications for a give casting or family of castings will result in "qualified castings". Heat treatment procedure qualification strategies will be developed for carbon steels, low alloy steels, and high alloy steels. It is expected that the heat treatment qualification concepts developed can also be applied to other heat treatment casting alloy families with further research.
Pennsylvania State University
Malcolm Blair
Steel Founders' Society of America
780 McArdle Drive
Unit G
Crystal Lake, IL  60014

phone: (815) 455-8240
fax: (815) 455-8241

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