Corrosion testing apparatus for seawater submerged zone

Abstract

The invention discloses a corrosion testing apparatus for a seawater submerged zone. The corrosion testing apparatus comprises a hollow testing chamber used for holding a seawater-simulating testing solution, a transmission shaft arranged in the testing chamber, a rotating wheel connected with the transmission shaft and rotating under the driving of the transmission shaft, and a breather pipe communicated with the interior of the testing chamber and used for introducing gas into the testing chamber, wherein a plurality of holes are formed in the rotating wheel, the periphery of the rotating wheel is provided with a plurality of sample clamping stations, and each clamping station is correspondingly provided with a clamp. The corrosion testing apparatus for the seawater submerged zone can effectively simulate the complex corrosion conditions of the seawater submerged zone, including seawater erosion corrosion, chloride ion corrosion and high oxygen corrosion; testing results are stable and reliable; and the corrosion testing apparatus is beneficial for research and analysis of the corrosion failure mechanisms of materials in the seawater immersion zone, and provides guidance for the development of novel steel varieties and a basis for selection of steel used for marine engineering.

Description

technical field [0001] The invention relates to a test device, in particular to a corrosion test device under simulated seawater conditions. Background technique [0002] Corrosion is a major failure mode of steel materials. In the development of marine resources, steel is widely used in large marine components such as marine power generation equipment, cross-sea bridges, submarine pipelines, offshore platforms, and ships. Such components face more serious corrosion problems during service due to the presence of high concentrations of chloride ions in seawater and the atmosphere. The corrosion of steel in the marine environment can be divided into five areas from top to bottom: marine atmospheric corrosion, seawater splash zone corrosion, tidal zone corrosion, seawater full immersion zone corrosion and sea mud corrosion. According to GB / T 6384--2008 "Seawater Corrosion Test Method for Metal Materials Used in Ships and Offshore Engineering in Natural Environment", the seawa...

AI Technical Summary

Problems solved by technology

The test device can overcome the problem that the existing seawater corrosion test device cannot simulate the corrosion conditions in the seawater full immersion area, and can not only simulate the scour effect of seawater on the components in the full immersion area, but also simulate the corrosion of marine components in the full immersion area. It can truly reproduce the seawater erosion corrosion of components in the seawater immersion area and the seawater corrosion process under high oxygen conditions in the laboratory, and the test results are stable and reliable, thereby promoting the research and analysis of the corrosion failure mechanism of materials in the seawater immersion area , and provide guidance for the development of new steel types, and provide a basis for the selection of steel materials for marine engineering

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