METHOD FOR MAKING ROLLED BARS

FIELD: rolled stock production, possibly manufacture of rolled shapes of carbon and alloy steels. SUBSTANCE: method comprises steps of heating blank, multipass reducing of it between rolls with cast iron roll grooved passes; performing multipass reduction at temperature range 800 - 1250 C at elongat...

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Bibliographic Details
Main Authors MONID V.A, TRAJNO A.I, LAMUKHIN A.M, JAKOVLEV S.S, ROVKIN A.M, LUTSENKO A.N, ROSLJAKOVA N.E
Format Patent
LanguageEnglish
Russian
Published 20.05.2004
Edition7
Subjects
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
ROLLING OF METAL
TRANSPORTING
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Summary:FIELD: rolled stock production, possibly manufacture of rolled shapes of carbon and alloy steels. SUBSTANCE: method comprises steps of heating blank, multipass reducing of it between rolls with cast iron roll grooved passes; performing multipass reduction at temperature range 800 - 1250 C at elongation factor for one pas equal to 1.05 - 1.50; using rolls with grooved passes made of cast iron having next chemical content, mass %: carbon, 2.7 - 3.9; silicon, 0.2 - 0.9; manganese, 0.3 - 1.2; chrome, 0.5 - 0.9; nickel, 0.7 - 2.2; molybdenum, 0.1 - 0.6; vanadium, 0.01 - 0.08; sulfur, no more than 0.02; phosphorus, 0.08 - 0.20; iron, the balance. EFFECT: maximum strength of reduction roll grooved passes, possibility for making rolled pieces with high accuracy of dimensions and high mechanical properties. 2 tbl
Bibliography:Application Number: RU20020134047