METHOD FOR PREVENTING SURFACE FLAW OF STAINLESS STEEL SHEET

PURPOSE:To fundamentally prevent generation of the surface flaws of a stainless steel sheet by injecting a lubricant prepd. by incorporating an aq. soln. of a glass compsn. into oil to roll surfaces at the time of hot rolling of the stainless steel sheet. CONSTITUTION:The generation of the surface f...

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Bibliographische Detailangaben
Hauptverfasser:	FUJIKI IWAO, KANARI SHOHEI
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS FUELS INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS LUBRICANTS LUBRICATING COMPOSITIONS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PUNCHING METAL ROLLING OF METAL TECHNICAL GASES CONTAINING CARBON MONOXIDE TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Beschreibung
Zusammenfassung:	PURPOSE:To fundamentally prevent generation of the surface flaws of a stainless steel sheet by injecting a lubricant prepd. by incorporating an aq. soln. of a glass compsn. into oil to roll surfaces at the time of hot rolling of the stainless steel sheet. CONSTITUTION:The generation of the surface flaws during hot rolling is prevented by dispersing the aq. soln. of the glass compsn. into the oil and rolling the stainless steel sheet while injecting the aq. soln. onto the roll surfaces so as to decrease the friction at the contact boundaries between the rolls and the rolling stock. The glass compsn. refers to a phosphoric acid and its salt, boric acid and its salt as well as the carbonate, nitrate, phosphate, borate and hydroxide, etc., of alkaline metals. The glass compsn. consisting of 40 to 55mol% P2O5, 30 to 60mol% M2O (M is an alkaline metal) and 6 to 9mol% B2O3 is more adequate in the method for preventing the surface flaws of the stainless steel sheet.