High-temperature tensile experiment device and method capable of evenly heating sample part

Abstract

The invention provides a high-temperature tensile experiment device which is characterized by utilizing a horizontal type electronic all-purpose stretcher as a main body. The high-temperature tensileexperiment device comprises a stretching mechanism, wherein the stretching mechanism is respectively connected with a movable horizontal beam and a right fixed horizontal beam of the horizontal type electronic all-purpose stretcher through a left stretching rod, a right stretching rod and bolts; a high temperature resistance pin is embedded in a cylindrical copper electrode, a thread is arranged at the exposed end of the upper part of the high temperature resistance pin, and the high temperature resistance pin is matched with the left stretching rod and the right stretching rod to clamp a tensile sample part and form a current circuit. The high-temperature tensile experiment device further comprises a high-frequency induction coil, a CCD camera, an infrared thermometer, a high-pressure airspray head and a temperature control device. The high-temperature tensile experiment device disclosed by the invention can quickly heating a magnetic conductive sample part and can keep the magneticconductive sample part warm; meanwhile, a temperature gradient in the scale distance of the tensile sample part is effectively reduced, and temperature evenness of the tensile sample part is ensured;thus, experiment data accuracy is improved, and effective data support is provided for finite element numerical simulation and material performance evaluation.

Description

technical field [0001] The invention relates to the field of performance testing of high-temperature materials, in particular to a high-temperature tensile test device and method for realizing uniform heating of samples. Background technique [0002] Lightweight is a research hotspot in today's transportation equipment. The application of high-strength metal sheets can effectively reduce the weight of equipment while meeting safety requirements. However, high-strength sheet metal has poor toughness at room temperature, and it is prone to cracking and wrinkling during the forming process. At the same time, the springback problem of the formed part is also serious. Quality requirements. [0003] Hot stamping forming technology can effectively improve the formability of high-strength metal sheets, and is helpful for the stamping of complex parts. In the hot forming process, the high-strength sheet is first heated to a certain temperature, and then quickly transferred to the ...

AI Technical Summary

Problems solved by technology

In this patent, the electromagnetic induction coil is placed around the sample to achieve heating. Although this method can simulate the real production environment, the induction coil around the sample will hinder the installation of deformation measurement devices such as high-temperature extensometers, so that it cannot Accurately obtain the stress-strain curve of the specimen

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