HIP quenching - A heat treating method

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:484293

Zimmerman, F X ^[1]; Bergman, C ^[2]

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1. ABB Autoclave Systems Inc., Erie, PA (United States)
2. ABB Pressure Systems AB, Vasteras (Sweden)

Hot Isostatic Pressing (HIPing) has developed since the 1950`s to a major processing method today for defect healing of castings. It also gained importance in forming powders to fully dense near net shapes or post densification of porous compacts. The HIP process applies pressure and temperature simultaneously to eliminate residual porosity resulting in improved mechanical, physical & fatigue properties of components. Materials such as Metals, Ceramics, Composites and other materials mandate HIPing for high performance applications such as for aerospace, medical, and various industrial uses. HIP cycles with conventional furnaces are rather long mainly because of slow cooling rates resulting in low productivity. Demands for higher throughput in the early 1980`s has stirred the need for faster cooling furnaces. Rapid cooling furnace designs were introduced mainly for reducing the cycle time but brought along HIP-Quenching as an added value which offers combined HIPing + solution heat treating. This paper describes the evolution of HIP-Quenching with rates to 1000 C/Minute and illustrates other benefits. An example of cooling rates of a 640 mm diameter turbine disc is also presented.

• OSTI ID: 484293
• Report Number(s): CONF-961140--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COOLING TIME
HOT PRESSING
METALS
QUENCHING