Method of producing high tensile strength steel strapping
Abstract
Abstract A METHOD OF PRODUCING A HIGH TENSILE STRENGTH STEEL STRAPPING FROM A SEMI-KILLED STEEL, KILLED STEEL OR CAPPED STEEL. THE STEEL HAS A MANGANESE CONTENT IN THE RANGE OF FROM ABOUT 0.3% TO ABOUT 1% BY WEIGHT AND A CARBON CONTENT IN A RANGE OF FROM ABOUT 0.18% TO ABOUT 0.34% BY WEIGHT. THE STEEL IS HEATED ABOVE THE CRITICAL TEMPERATURE THEREOF AND HOT ROLLED TO A THICKNESS OF FROM ABOUT 250% TO ABOUT 400% GREATER THAN THE ULTIMATE DESIRED COLD ROLLED THICKNESS THEREOF AND THEREAFTER QUENCHED IN LAMINAR FLOW WATER TO A TEMPERATURE OF FROM ABOUT 550*F. TO ABOUT 750*F. THEREAFTER, THE QUENCHED HOT ROLLED STEEL IS COLD ROLLED TO A TICKNESS OF BETWEEN ABOUT 40% AND ABOUT 25% OF THE HOT ROLLED THICKNESS AND THEREAFTER SIMULTANEOUSLY CLEANED AND STRESS RELIEVED BY HEATING THE COLD ROLLED STEEL IN A PROTECTIVE ATMOSPHERE TO A TEMPERAUTRE IN THE RANGE OF FROM ABOUT 800*F. TO ABOUT 1050*F. FOR A TIME IN THE RANGE OF FROM ABOUT 5 SECONDS TO ABOUT 15 SECONDS.
Inventors
- 👤 M Hunt
- 👤 A Buy
Bibliographic Details
Claims Analysis
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