Clamp for electrified stretching

Abstract

The invention discloses a clamp for electrified stretching, belonging to the field of stretching testing. The clamp comprises a clamp handle, a clamp body, a releasing device, two clamping blocks, two insulation partition plates, an insulated limiting part, an insulated baffle plate, a spring and an insulated pre-tightening block, wherein the clamp body comprises a bottom and two side arms arranged at two ends of the bottom, an opening is formed between the bottom and the two side arms, one end of the clamp handle is connected with a stretching testing machine, the other end of the clamp handle is connected with the bottom, and the side arm and the clamp handle extend from the bottom in opposite directions; when the clamp works, the electric insulation component cannot be stretched, thus, the clamp has high tensile strength and cannot be damaged easily in use; the force application range of the electrified stretching testing is expanded; the clamping block can be replaced due to the detachable insulation stop block, the clamp can be suitable for test specimens in different types and the using range of the clamp is expanded.

Description

technical field [0001] The invention relates to the field of tensile tests, in particular to a clamp for electrified stretching. Background technique [0002] During the plastic deformation of metals, the phenomenon that the plasticity increases and the deformation resistance decreases under the stimulation of an applied current is called the electroplastic effect. In order to analyze the electroplastic effect of metal materials, it is necessary to conduct electrified tensile tests on metal materials. When conducting an electrified tensile test on a metal material, two sets of fixtures need to be installed on the tensile testing machine, and the sample (metal material) is sandwiched between the two sets of fixtures to complete the electrified tensile test. In order to ensure the safety of the equipment and the reliability of the test process, it is necessary to ensure that the tensile testing machine is electrically insulated from the sample when conducting the electrified ...

AI Technical Summary

Problems solved by technology

[0004] Existing fixtures are made of electrically insulating materials with very low tensile strength, and are easily damaged when the tensile force is too large, so that excessive tensile force cannot be applied to the sample during the electrified tensile test, which limits the size of the sample; in addition , the fixtures in the prior art are usually only suitable for a fixed-shaped sample, such as a flat-shaped sample or a cylindrical sample, and the versatility is not high

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