Stress monitoring and early warning method and system for prestress ring of cold extrusion mold

• Main Authors: WU XIAOZHI, GU YONGYU, FENG AIXIN, WANG YAJUN
• Format: Patent
• Language: Chinese; English
• Published: 11.07.2012
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; 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; TESTING; TRANSPORTING

The invention relates to the metal plastic processing field, in particular to a stress monitoring and early warning method and system for a prestress ring of a cold extrusion mold. The system consists of a strain foil, a bridge box, a dynamic strain meter, an industrial computer, a feedback control switch and an alarm. By implementing the stress monitoring and early warning method and system for the extrusion mold, the strain value and the strain situation of the prestress ring of the mold can be measured in real time, the goal of monitoring the prestress ring of the mold in real time can be achieved by presetting a stress safety value, the problem that the mold and the prestress ring are apt to be ruptured under stress because of too high load is solved, and the safety problem which is caused when the mold and the prestress ring are ruptured because of stress rupture is avoided.