Electrified thermal stretching testing device and stretching testing method

Abstract

The invention provides an electrified thermal stretching testing device and a stretching testing method. The electrified thermal stretching testing device comprises a unidirectional stretching testing device and a temperature control device, wherein the unidirectional stretching testing device is insulated by a clamp. A temperature measurement unit, a power adjuster and a power supply device in the temperature control device are connected in series. According to the electrified thermal stretching testing device, an infrared temperature measurement sensor is used for monitoring the surface temperature of an electrified stretching testing piece at any time, so that the electrified thermal stretching testing device has the characteristics of rapid responding time, no contact, safety in utilization and long service life. Meanwhile, the temperature of the stretching testing piece in an electrified thermal stretching process can be basically stable so that the temperature of the stretching testing piece can be stabilized at different temperatures so as to be tested, and the research range of mechanical properties of materials is enlarged.

Description

technical field [0001] The invention relates to the research field of thermoforming of materials, in particular to a method and a device for an electrified thermal tensile test. Background technique [0002] For some structural materials, they are difficult to form at room temperature and have a large amount of springback, but if the material blank is hot-formed, its forming properties can be greatly improved, and springback and wrinkling can basically be used in hot forming. Therefore, various material thermoforming methods such as thermal radiation heating, electric furnace heating, oxyacetylene flame heating and resistance heating have emerged. The resistance heating forming process is a process of forming by energizing the part to be processed and heating it to the forming temperature. The advantages of resistance heating are the characteristics of fast heating speed, low energy consumption, uniform heating, etc., and the workpiece is at high temperature for a short tim...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of uneven heating of the tensile test piece during the hot stretching process and the need to keep the temperature of the tensile test piece at a stable temperature state for uniaxial tensile tests, research materials under different temperature states mechanical properties, the present invention proposes a kind of electrified heat tensile test device and tensile test method

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