Manufacturing process and properties of nuclear RPV shell ring forged from hollow ingot

A shell ring for an RPV of a 1300 MWe type PWR was forged from a 200-ton hollow ingot, and its very high quality regarding the internal qualities, tensile properties, fracture toughness, fatigue properties and underclad cracking properties were confirmed. The steel was refined by a basic oxygen furn...

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Bibliographic Details
Published in:Nuclear engineering and design 1984-09, Vol.81 (2), p.193-205
Main Authors: Ohashi, Nobuo, Enami, Teiichi, Wanaka, Hiroshige, Aso, Kazuo
Format: Article
Language:English
Subjects:
Applications
Applied sciences
Engineering techniques in metallurgy. Applications. Other aspects
Exact sciences and technology
Forging and extrusion
Forming
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Others aspects
Production techniques
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Summary:A shell ring for an RPV of a 1300 MWe type PWR was forged from a 200-ton hollow ingot, and its very high quality regarding the internal qualities, tensile properties, fracture toughness, fatigue properties and underclad cracking properties were confirmed. The steel was refined by a basic oxygen furnace and degassed by a vacuum treatment furnace. The manufacturing process of a large hollow ingot has been established by an improved core structure which enabled segregation of chemical components to be decreased and a clean inner surface to be obtained.
ISSN:0029-5493
1872-759X
DOI:10.1016/0029-5493(84)90007-4