DESCALING METHOD IN TIME OF HOT ROLLING

DESCALING METHOD IN TIME OF HOT ROLLING

PURPOSE:To prevent a scal flaw from being generated by injecting high pressure water spray having specified collision pressure and flow rate on the surface of a steel plate before finish rolling. CONSTITUTION:When steel material is hot-rolled to produce the hot rolled steel plate, high pressure wate...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SUMINAGA TOMOTAKE, OIKAWA RYOSUKE, TAKENAKA HISAO, TAKAHASHI YOSHIYUKI, ABE MITSUYOSHI, ADACHI AKIO
Format: Patent
Sprache:eng
Schlagworte:
CLEANING
CLEANING IN GENERAL
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PREVENTION OF FOULING IN GENERAL
PUNCHING METAL
ROLLING OF METAL
TRANSPORTING
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Beschreibung
Zusammenfassung:PURPOSE:To prevent a scal flaw from being generated by injecting high pressure water spray having specified collision pressure and flow rate on the surface of a steel plate before finish rolling. CONSTITUTION:When steel material is hot-rolled to produce the hot rolled steel plate, high pressure water spray of 20-180[g/mm ] collision pressure per unit dispersion area and 0.1-0.6[l/(min, mm )] flow rate us injected on the surface of the steel plate. Austenitic stainless steel is suitable for the steel material. High pressure water spray of 60-170[g/mm ] collision pressure and 0.1-0.2[l/(min, mm )] flow rate is infected on an austenitic stainless steel containing >=0.06% Si. In this way, hard-to-peel scales can be removed surely without receiving operational constraint.