Device for tensile test of high temperature oxidizable metal material

Abstract

The invention discloses a device for tensile test of a high temperature oxidizable metal material, comprising: a vacuum chamber, a vacuum chamber door, a vacuum system, a temperature control unit, anupper beam loading rod, an upper load transfer frame, a lower beam fixing rod, a lower load transfer frame, an upper ball hinged support, a lower ball hinged support, an upper clamp and a lower clamp;the vacuum chamber door is provided with a transparent observation window and is hinged to the vacuum chamber; the top of the vacuum chamber is a detachable cover; the vacuum system communicates withthe vacuum chamber; the temperature control unit is used for heating a tensile specimen and measuring the temperature of the tensile specimen; and the upper beam loading rod, the upper load transferframe, the lower beam fixing rod, the lower load transfer frame, the upper ball hinged support, the lower ball hinged support, the upper clamp and the lower clamp are disposed inside the vacuum chamber. The invention realizes the automatic centering of the sample through the synergistic relationship of the "circular collimation track-upper ball hinged support and lower ball hinged support-upper clamp and the lower clamp" to ensure that the axial force is uniform, Ensure accurate, reliable results and good reproducibility.

Description

technical field [0001] The invention relates to the technical field of testing mechanical properties of metal materials, in particular to a device for tensile testing of high-temperature easily oxidized metal materials. Background technique [0002] The mechanical properties of metal materials at high temperatures (including Young's modulus, tensile strength, yield strength, hardness, etc.) , its high-temperature mechanical properties often determine the service life of the component and the overall operating state of the equipment. Heat treatment is a thermal processing process in which metal materials are heated to a predetermined temperature in a solid state, kept at this temperature for a period of time, and then cooled to room temperature at a certain speed. The internal structure and mechanical properties of most metal materials can be significantly improved by heat treatment. Therefore, it is very necessary to test and analyze the high-temperature mechanics of metal...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a device for the tensile test of high-temperature easily oxidizable metal materials in view of the deficiency that existing tensile devices and fixtures cannot be used for tensile tests of easily oxidizable metal materials at high temperatures. Under the premise of ensuring uniform force on the sample to be tested and automatic centering of the sample and the direction of force, the tensile sample of the metal material can be heated up rapidly and the temperature distribution is uniform, and the sample can be kept in a vacuum or inert gas environment. The anti-oxidation effect has the advantages of simple structure, easy maintenance, quick and easy sample clamping, safe and fast measurement process, and accurate and reliable results. At the same time, it can realize rapid cooling of the sample and adapt to various specifications of fixtures. greatly expanded

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