Testing device for current auxiliary type micro-stretching mechanical property of metal thin plate

Abstract

The invention provides a testing device for a current auxiliary type micro-stretching mechanical property of a metal thin plate and relates to a mechanical property testing device. As no relative information can be referred at home and abroad at present, the problems of electrification and insulation of a micro-stretching clamp, a clamping form of a micro-test sample, control and acquisition of the temperature of the test sample, and current parameter acquisition are required to be solved. A force sensor is mounted at the lower part of a movable transverse beam of an all-purpose material testing machine; two sets of clamp bodies are symmetrically mounted on the all-purpose material testing machine; a micro-stretching test sample is mounted between the two sets of clamp bodies; the two ends of a pulse power supply are connected with the two sets of clamp bodies by purple copper electrodes; a digital storage type oscilloscope is connected with the pulse power supply through a Hall current probe; a loop is formed by the pulse power supply, the two purple copper electrodes, the two sets of clamp bodies and the micro-stretching test sample; and a thermal infrared imager and an industrial air blower are mounted on the two sides of the all-purpose material testing machine by brackets. The testing device is used for current auxiliary type micro-stretching mechanical property testing.

Description

technical field [0001] The invention relates to a micro-tensile mechanical property testing device, in particular to a metal sheet current-assisted micro-tensile mechanical property test device, which belongs to the field of micro-tensile mechanical property testing. Background technique [0002] Under the action of electricity, the deformation resistance of the material decreases and the plasticity increases, which is called the electroplastic effect. Since the discovery of the electroplastic effect in the 1960s, scholars at home and abroad have carried out a lot of research on the mechanism of electroplasticity and its forming process. Compared with the traditional warm forming process, the current-assisted plastic forming process has the advantages of short forming cycle, energy saving, and environmental protection. At present, domestic Tsinghua University and Yanshan have developed electroplastic drawing devices, and Shanghai Jiaotong University has also developed elect...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems that there is no relevant information at home and abroad for reference, and it is necessary to solve the problems of energization and insulation of the micro-tensioning fixture, the clamping form of the tiny sample, the temperature control and collection of the sample, and the collection of current parameters, and then provide A current-assisted micro-tensile mechanical property testing device for thin metal plates

Images