PROCESS FOR PRODUCING HIGH STRENGTH AND RESISTANCE STEEL FOR PRESSURE-CONTAINING CONTAINERS

摘要

The process according to the invention is characterized in that it comprises the stages comprising: / P 10 TO 0.8 BY WEIGHT, FROM 0.45 TO 1.00 BY WEIGHT OF MN, FROM 0.80 TO 3.50 BY WEIGHT OF CR, FROM 0.10 TO 1.60 BY WEIGHT OF MO, FROM 0.10 TO 0.53 BY WEIGHT, 0.010 TO 0.040 BY WEIGHT SOLUBLE ALUMINUM, 0.05 TO 0.40 BY WEIGHT FROM 0.02 TO 0.20 BY WEIGHT BY NB, ONE QUANTITY LESS THAN 0.010 IN TI WEIGHT, 0.0002 TO 0.0010 BY WEIGHT OF B, AND A QUANTITY OF NOT MORE THAN 0.004 BY WEIGHT OF N, THE REMAINING QUANTITY OF IRON AND IMPURITIES IN WHICH THE QUANTITIES OF N AND TI ARE SATISFIED THE FOLLOWING RELATIONSHIP: / P P -HE HEAT STEEL AT A TEMPERATURE GREATER THAN 1200C; / P P -A LAMINATE THE HEATED STEEL UNTIL A TOTAL DECREASE GREATER THAN 30 AT A TEMPERATURE GREATER THAN 1050C; / P P - DIRECTLY SOAK THE ROLLED STEEL; AND / P P -A SUBMIT STEEL TO AN INCOME (THERMAL TREATMENT AFTER WELDING). FOR THE PRODUCTION OF CONTAINERS CONTAINING PRESSURE. / P