PROCESS AND APPARATUS FOR DETERMINING THE VARIATION OF TENSILE STRESSES IN COLD-ROLLED STRIP OVER THE WIDTH THEREOF

• Main Authors: GFRERER M,OE, HERZOG A,OE, SCHWENZFEIER W,OE
• Format: Patent
• Language: English
• Published: 26.11.1974
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PHYSICS; PUNCHING METAL; ROLLING OF METAL; TESTING; TRANSPORTING

The strip is pulled over two parallel supports, which are spaced in and extend transversely to the longitudinal direction of the strip. Each of a plurality of longitudinal zones of said strip between said supports is excited to vibrate at its natural frequency by means which are out of contact with the strip. The vibration of each of said longitudinal zones at its natural frequency is detected by means which are out of contact with said strip. Signals are generated which are representative of the frequency of said detected vibration of each of said longitudinal zones as a measure of the tensile stress in said longitudinal zone.