BLANK ROLLING METHOD

BLANK ROLLING METHOD

FIELD: rolled stock production, possibly rolling cast steel square cross-section blanks in merchant bar and continuous billet rolling mills. ^ SUBSTANCE: method for rolling blank comprises steps of multiple reduction of blank between rolls with rhomb and square grooved passes; performing reduction o...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: GORBUNOV JU.N, NIKIFOROV V.V, MONID V.A, TRAJNO A.I, LUTSENKO A.N, ROSLJAKOVA N.E
Format: Patent
Sprache:eng ; rus
Schlagworte:
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
ROLLING OF METAL
TRANSPORTING
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Beschreibung
Zusammenfassung:FIELD: rolled stock production, possibly rolling cast steel square cross-section blanks in merchant bar and continuous billet rolling mills. ^ SUBSTANCE: method for rolling blank comprises steps of multiple reduction of blank between rolls with rhomb and square grooved passes; performing reduction of blank during first pass with elongation factor 1.15 -1.22 in rhomb grooved pass whose lateral sides near apex of small diagonal along length 0.15 - 0.30 of rhomb side are arranged by right angle and joined with respective sides of rhomb; performing reduction during second pass in rhomb grooved pass with elongation factor 1.05 - 1.10; then reducing blank in rolls with square grooved pass. ^ EFFECT: improved biting of blank, prevention of distortion of blank geometry. ^ 1 dwg, 1 tbl, 2 ex