Corrosion test accelerating device

Abstract

The invention relates to a corrosion test accelerating device which is characterized by comprising a gradation loading system and a lever loading system, wherein a poise is hung at one end of a lever of the lever loading system; the other end of the lever is connected with the gradation loading system; a supporting point is fixed on a bearing plane through an upright post and can move along the lever; each stage of the gradation loading system consists of a narrow plate and a sling; a sling in the middle of any middle stage narrow plate is connected with one end of a last stage narrow plate; slings at two ends of each narrow plate are connected with the middles of two next stage narrow plates; slings at two ends of a lowest stage narrow plate of the loading system are fixed on the bearing plane through bolts; a sling in the middle of each narrow plate is connected with a thin-plate sample; the other end of the sample is drawn by the sling, and is then fixed on the bearing plane; and a corrosion environment test box is clamped on the middle part of the thin-plate sample. In the invention, the load on the sample can be adjusted by changing the position of the supporting point, multiple groups of accelerated test can be performed simultaneously, loads applied to all samples are same, the thickness of the sample is relatively small, and a plane stress state is approximately met.

Description

technical field [0001] The patent of the present invention relates to an accelerated corrosion test device used in stress corrosion tests. Background technique [0002] The corrosion resistance of materials is one of the important parameters that determine the working life of systems and components. Systems and components will be subject to certain stress during use, and are prone to corrosion damage, and stress corrosion damage is more common in corrosion damage. The general research method of stress corrosion is accelerated corrosion test, the purpose of which is to study the mechanism of stress corrosion, select materials, develop new alloys resistant to stress corrosion, and study the protection methods of materials against stress corrosion. Existing accelerated corrosion test equipment such as figure 1 As shown, the sample is loaded using the lever principle, and the weight is connected to one end of the lever, and the other end is connected to the sample. However, on...

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Problems solved by technology

Existing accelerated corrosion test equipment such as figure 1 As shown, the lever principle is used to load the sample. The weight is connected to one end of the lever, and the other end is connected to the sample. However, only a single sample is tested at a time, which takes up a lot of space and low experimental efficiency.

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