Atmosphere corrosion acceleration test method

Abstract

The invention discloses an atmosphere corrosion acceleration test method which comprises the following steps: firstly, designing an acceleration test device; then linearly cutting and grinding a test sample, and fixing the test sample on a test hanging rack of the acceleration test device. During test, a controller controls a water feeding and drainage mechanism to work to fill a water storage tank with seawater, and a dry-wet circulating corrosion test is carried out, and comprises the following procedures: the controller controls a hanging rack lifting device to put the test hanging rack into the seawater in the water storage tank for soaking for T1, and the test hanging rack rises for drying in air for T2; finally, the procedures of the dry-wet circulating corrosion test are repeated till reaching a specified test period; and upon completion of the acceleration test, the sample is analyzed for corrosion. The atmosphere corrosion acceleration test method is convenient to operate; the corrosion acceleration test is carried out outside; a test environment is a natural environment, and the seawater is actually used as a corrosion acceleration medium, so that the simulation property and the acceleration speed for ocean and atmosphere corrosion processes are high; furthermore, the dry-wet circulating period can be adjusted according to corrosion characteristics of different materials; and on the basis that the corrosion progress is not changed, the acceleration speed is increased.

Description

technical field [0001] The invention relates to the field of test technology for simulating atmospheric environment accelerated corrosion, in particular to an accelerated test method for atmospheric corrosion. Background technique [0002] Mechanical engineering equipment has been working in various atmospheric environments for a long time. The unavoidable problem in the service process is the failure of atmospheric corrosion of materials. According to statistics, the economic losses caused by atmospheric corrosion account for more than half of the total corrosion losses. Therefore, it is an important and urgent task to study the corrosion phenomenon and law of materials in the atmosphere and to understand the influence of environmental factors on material corrosion. [0003] The research method of metal corrosion failure in the atmospheric environment is the natural exposure experiment, which is a more reliable corrosion research method close to the use environment. The mat...

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Problems solved by technology

However, there are still the following problems: 1. The factors considered by the test device are still not comprehensive enough. The corrosion factor considered in the acceleration method is relatively single, and the cycle is long, which brings a lot of inconvenience to the test personnel; 2. The corrosion acceleration still stays at the level of indoor simulation In fact, although it can r

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