A high temperature axial loading stress corrosion test device

Abstract

The invention relates to the field of stress corrosion measurement, in particular to a high-temperature axially loaded stress corrosion test device, which solves the problems in the prior art of cumbersome steps in clamping a sample, easy leakage of a solution under stress applied conditions, and excessive boiling of the solution. The device includes a load application system and a temperature control system. It is mainly equipped with a set of reverse force frames made of Hastelloy, a beaker, a stainless steel heating ring, a thermocouple sealed with polytetrafluoroethylene, and a temperature controller. , a thyristor trigger, a condensate return tube and a rubber stopper. The device is easy to operate. It can load both rod-shaped samples and plate-shaped samples. It can accurately control the heating temperature, boiling degree and applied load of the solution, and it is easy to observe the stress corrosion state of the sample in real time. The overall size of the device is small, suitable for popularization and use in laboratories, and can also be widely used in large-scale industrial production, detection and analysis of iron and steel, non-ferrous metals and other fields.

Description

technical field [0001] The invention relates to the field of stress corrosion measurement, in particular to a high-temperature axially loaded stress corrosion test device, which is suitable for systems with high requirements on stress conditions and high-temperature solutions. Background technique [0002] Under the joint action of constant load (or tensile stress) and specific corrosive medium, the metal will form cracks and cause hysteresis fracture. This phenomenon is called stress corrosion, which can be summarized into two types: (1) hydrogen-induced cracking type stress corrosion, which is This type of stress corrosion is controlled by the hydrogen entering the material and the hydrogen generated by the electrochemical cathodic reaction process when the material is served in the atmosphere or in a hydrogen-containing environment; (2) anodic dissolution type stress corrosion, which is affected by the electrochemical anodic reaction controlled by the process. Metals suc...

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Problems solved by technology

[0003] Aiming at the problems existing in the prior art, the main purpose of the present invention is to provide a high-temperature axially loaded stress corrosion test device to solve the problems in the prior art that the solution is prone to leakage and that it is difficult to apply an axial load in the boiling solution to carry out the stress corrosion test. problem, the device can accurately control the heating temperature of the solution, the boiling degree of the solution and the size of the applied load

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