Method and apparatus for hot rolling ferrous metal workpieces
Abstract
Abstract FERROUS METAL WORKPIECES ARE ROLLED AT AN ELEVATED HOT ROLLING TEMPERATURE IN A HOT MILL USING AN AQUEOUS DISPERSION OF AN OILY LIQUID AS A COOLANT AND LUBRICANT FOR THE WORK ROOLS OF THE ROLLING STANDS. THE AQUEOUS DISPERSION CONTAINS ABOUT 0.0005-0.05% BY WEIGHT OF AN OILY LIQUID HAVING A HIGH FLASH POINT WHICH IS CAPABLE OF ACTING AS A LUBRICANT AT THE ROLLING TEMPERATURES AND PRESSURES. PREFERRED OILY LIQUIDS INCLUDE RAPESEED OIL AND SYNTHETIC RAPESEED OIL THE OILY LIQUID IS INJECTED UNDER HIGH PRESSURE INTO A HIGH-PRESSURE WATER STREAM TO FORM THE DISPERSION AND THE DISPERSION IS SPRAYED ONTO THE WORK ROOLS. FLOW OF OILY LIQUID IS DISCONTINUED BEFORE THE WORKPIEKCE LEAVES THE MILL, FOR THE TAIL END PORTION OF THE HOT WORKPIECE STO REMOVE OIL ON THE ROLLS TO AVOID SLIPPAGE WHEN THE NEXT WORKPIECE ENTERS THE ROLL BITE. FLOW OF OILY LIQUID IS INITIATED ONLY AFTER THE WORKPIECE ENTERS THE ROLL BITE.
Inventors
- 👤 Lockwood Lyon
- 👤 William H Rees
Bibliographic Details
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