Heat Treatment Procedure Qualification for Steel Castings

Voigt, Professor Robert C.

Penn State University

关键词: Heat Treatment;    Foundries;    Recommendations;    Specifications;    36 Materials Science;   

DOI  :  10.2172/807809
RP-ID  :  NONE
RP-ID  :  FC36-99ID13841
RP-ID  :  807809

美国|英语

来源: UNT Digital Library

【 摘 要 】

The science of heat treatment has been well studied and is the basis from which existing specifications and practices for the heat treatment of steel castings have been developed. Although these existing specifications address the general needs of steel castings to be heat-treated, they do not take into account the variability in the parameters that govern the processes. The need for a heat treatment qualification procedure that accounts for this variability during heat treatment is an important step toward heat treatment quality assurance. The variability in temperatures within a heat treatment furnace is one such variable that a foundry has to contend with in its day-to-day activity. Though specifications indicate the temperatures at which a particular heat treatment has to be conducted, heat treatment specifications do not adequately account for all aspects of heat treatment quality assurance. The heat treatment qualification procedure will comprise of a robust set of rules and guidelines that ensure that foundries will still be able to operate within the set of constraints imposed on them by non-deterministic elements within the processes.