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 axial loading stress corrosion test device, and solves problems of complex steps during sample clamping as well as easy leakage and overquick boiling of a solution under a stress application condition. The device comprises a load applying system and a temperature control system, and is mainly provided with a set of counterforce frames made of hastelloy, a beaker, a stainless steel heating coil, a thermocouple closed by polytetrafluoroethylene, a temperature controller, a controllable silicon trigger, a condensation reflux pipe and a rubber plug. The device is simple and convenient to operate, can load not only a rod-like sample but also a plate-like sample, can accurately control a heating temperature and a boiling temperature of the solution and an applied load, and is easy for observing a stress corrosion state of the sample in real time. The device is relatively small in overall size and suitable for popularization and use in labs, and can be widely applied to the fields of large-scale industrial production, detection analysis and the like of steel and iron, non-ferrous metal and the like.

Description

Technical field [0001] The invention relates to the field of stress corrosion measurement, in particular to a high-temperature axial load stress corrosion test device, which is suitable for systems with high requirements for stress conditions and high-temperature solutions. Background technique [0002] Metal will form cracks and cause delayed fracture under the combined action of constant load (or tensile stress) and specific corrosive media. This phenomenon is called stress corrosion and can be summarized into two types: (1) Hydrogen-induced cracking stress corrosion, which This kind of stress corrosion is controlled by the hydrogen that enters the material and the hydrogen generated by the electrochemical cathode reaction process when the material is served in the atmosphere or a hydrogen-containing environment; (2) Anodic dissolution stress corrosion, which is affected by electrochemical anode reaction Process controlled. Metals such as high-strength aluminum alloys, maragin...

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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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