公开(公告)号：US3619881A

公开(公告)日：1971-11-16

申请号：US3619881D

申请日：1969-01-17

申请人： UNITED STATES STEEL CORP

发明人： BILLS MAX E ,  HANSEN HENRY J JR

IPC分类号： B21B1/22 ,  B21B27/00 ,  B23H9/04 ,  B21B27/02

CPC分类号： B21B27/005 ,  B21B1/227 ,  B21B2267/10 ,  B23H9/04 ,  Y10T428/12389 ,  Y10T428/12993 ,  Y10T428/24355

摘要： A WORK ROLL FOR COLD ROLLING STEEL SHEETS OR STRIP HAS A PLURALITY OF SHALLOW GENERALLY FRUSTOSPHERICAL DEPRESSIONS IN ITS OUTER SURFACE. THE VAST MAJORITY OF THE DEPRESSIONS ARE OF SUBSTANTIALLY UNIFORM SHAPE AND DEPTH, BUT MAY BE RANDOMLY SPACED OVER THE ROLL SURFACE. WHEN THE SHEET IS ROLLED BETWEEN TWO ROLLS, AT LEAST ONE OF WHICH HAS THE DESCRIBED SURFACE, LOW GENERALLY FRUSTOSPHERICAL PROJEC-

TIONS OF SUBSTANTIALLY UNIFORM SHAPE AND HEIGHT ARE OBTAINED ON THAT SIDE OF THE STRIP IN CONTRACT WITH THE SURFACED ROLL.

公开(公告)号：US3591427A

公开(公告)日：1971-07-06

申请号：US3591427D

申请日：1969-07-25

申请人： UNITED STATES STEEL CORP

发明人： HANSEN HENRY J JR

IPC分类号： C21D1/30 ,  C21D8/02 ,  C21D9/46

CPC分类号： C21D8/0273 ,  C21D1/30 ,  C21D8/0226 ,  C21D8/0236

摘要： A METHOD OF PRODUCING FULLY-HARD, STRESS-RELIEVED PLAIN CARBON STEEL STRIP SUITABLE FOR USE AS CAN END-STOCK WHEREIN A LOW CARBON STEEL IS HOT ROLLED TO HOT BAND GAUGE AT TEMPERATURES WITHIN THE AUSTENITIC RANGE AND THEREAFTER RAPIDLY COOLED TO A TEMPERATURE BELOW THE AUSTENTIC RANGE PRODUCTING SMALL DISPERSED CARBIDES. THE STEEL IS COLD REDUCED TO FINAL GAUGE AND CONTINUOUS ANNEALED AT A TEMPERATURE BELOW ABOUT 1050*F. TO RELIEVE ROLLING STRESSES BUT AVOID SUBSTANTIAL RECRYSTALLIZATION. ON THE OTHER HAND, A STEEL STRIP SUITABLE FOR USE AS CAN BODY STOCK, I.E. HAVING LESS STRENGTH BUT GREATER FORMABILITY IF PRODUCED IF THE STEEL COOLED SLOWLY AFTER HOT ROLLING TO CAUSE LARGE AGGLOMERATED CARBIDES, AND IT THE FINAL CONTINUOUS ANNEAL IS AT A TEMPERATIVE BELOW ABOUT 1025*F., AGAIN TO RELEIVE ROLLING STRESSES BUT AVOID SUBSTANTIAL RECRYSTALLIZATION.