| 摘要 |
FIELD: rolled stock production, possibly metallic structures in building, machine engineering and other industry branches. SUBSTANCE: multibeam shape includes in cross section joining of at least of three flanges and at least a part of line of joining flanges forming angles due to crossing axes and(or) at least a part of boundary line of at least of one flange and(or) edge at least of one flange are in the form of fragment of oblique cone section of straight round cone. It provides increased smoothness of transition of curve portions at maintaining smoothness independently upon roll wear, lowered cost price of shape manufacture due to simplified procedure of shaping at rolling process and enhanced wear resistance of rolls. EFFECT: lowered cost price, enhanced technological effectiveness, decreased material consumption at maintaining carrying capability in condition of lengthwise compression, torsion or bending due to rational metal distribution along cross section of shape. 25 cl, 13 dwg |
