AN INTERMEDIATE MATERIAL FOR PRODUCING A DUAL GAUGE STRIP AND METHOD FOR PRODUCING THE SAME AND METHOD FOR PRODUCING A DUAL GAUGE STRIP

摘要

AN INTERMEDIATE MATERIAL FOR PRODUCING A DUAL GAUGE STRIP (1) HAVING ONE OR PLURAL THICK PARTS (2) ON THE SURFACE ALONG THE LONGITUDINAL DIRECTION OF THE STRIP (1), WHEREIN A PROTRUSION PART OF A TRAPEZOID CROSS SECTION (4) IS FORMED ON THE OTHER SURFACE. A METHOD FOR PRODUCING AN INTERMEDIATE MATERIAL FOR PRODUCING A DUAL GAUGE STRIP (1) HAVING ONE OR PLURAL THICK PARTS (2) ON THE SURFACE ALONG THE LONGITUDINAL DIRECTION OF THE STRIP, STARTING FROM A FLAT STRIP (M), COMPRISING REPEATED COMPRESSION ON A FLAT STRIP (M) BETWEEN A LOWER DIE (7) AND AN UPPER DIE (6) AND SLIGHTLY PROGRESSING FORWARD THE FLAT STRIP (M) AFTER EACH LOAD OF REPEATED COMPRESSION, WHEREIN THE UPPER DIE (6) EQUIPPED WITH PROTRUSIONS (9) OF AN INVERSE V CHARACTER SHAPE ON THE BOTTOM, WHEREIN THE LOWER DIE (7) SHOULD HAVE ONE OR PLURAL GROOVES (10) OF A TRAPEZOID CROSS SECTION WITH A SLIGHT DEPTH ON THE SURFACE CORRESPONDING TO THE GROOVE POSITIONS OF THE UPPER DIE (6).FIG. 3