C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
148/55
C21D 9/52 (2006.01)
Patent
CA 1087503
ABSTRACT Wire rod is subjected to a controlled cooling operation while emerging from a hot rolling mill. The rod is first cooled to a temperature of 850 to 650°C and is then kept at substantially this temperature for a time sufficient for austenite to be transformed into ferrite and for grain growth to occur. The rod is then cooled to a temperature of 625 to 400°C in an aqueous bath at high than 75°C, and is kept at substantially this temperature for a time not shorter than 15 seconds and sufficiently long to permit precipitation of carbon in the form of carbides.
296179
Centre de Recherches Metallurgiques-Centrum Voor Research In de
Marks & Clerk
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