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An erosion-corrosion experimental device for simulating spray splash zone

A technique for spray splashing and corrosion experiments, which is applied to measuring devices, weather resistance/light resistance/corrosion resistance, instruments, etc., and can solve the problems that the results of synergistic effects cannot be included in the research scope, etc.

Inactive Publication Date: 2017-09-26
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because there are many factors affecting the corrosion environment in the splash zone, such as salt concentration, wave size, wave period, sand content, oxygen content, light, temperature, etc., the existing device can only realize the research of some influencing factors, and cannot The synergistic results of many influencing factors are included in the research scope

Method used

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  • An erosion-corrosion experimental device for simulating spray splash zone
  • An erosion-corrosion experimental device for simulating spray splash zone
  • An erosion-corrosion experimental device for simulating spray splash zone

Examples

Experimental program
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Effect test

Embodiment

[0026] Using relevant equipment, using NaOH to adjust the pH to 8 3.5% NaCl solution, under the conditions of impact velocity 5.4m / s and impact frequency 1Hz, the arc aluminum coating, the bottom zinc surface aluminum coating, the zinc-aluminum pseudo-alloy coating, The erosion-corrosion rate of Al-Ti coatings changed with time and the corrosion current density were compared and studied, and the erosion failure mechanism was analyzed.

[0027] (1) The erosion morphology of carbon steel in the simulated splash zone is mainly corrosion pits and streamline corrosion. Corrosion pits appear in the parts directly impacted by water jets, while the streamline corrosion outside the impact angle is caused by gas-liquid two-phase flow . Cavitation plays an important role in the metal corrosion failure process in the splash zone, and improving the micro-cutting resistance of the material is beneficial to improving the erosion resistance of the material.

[0028] (2) Both the bottom zinc ...

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Abstract

The invention discloses an erosion-corrosion experimental device for simulating spray splashing area. The experimental device is supported by a base and includes a lifting system, a sample clamping system, a power system, a spraying system, an ultraviolet light aging system, and an electrochemical test. system and temperature control system, the base is fixed with a hydraulic lifting frame, the rise or fall of the hydraulic lifting frame is controlled by the pedal or the pressure relief knob, the sample clamping system and the power system are installed on the hydraulic lifting frame, and a In the medium tank, the sample clamping system is placed inside the medium tank, and a sealing cover is placed on the top of the medium tank, and the two are sealed by a rubber sealing ring. The invention can study the impact of wave impact velocity, impact period, sand content, oxygen content, temperature, light and other factors on the erosion-corrosion behavior of materials, so as to accurately simulate the failure process of the structure in the ocean spray splash zone, making up for the existing Insufficiency of the device for simulating material erosion-corrosion studies in the splash zone.

Description

technical field [0001] The invention relates to an erosion-corrosion experimental device and method, in particular to an erosion-corrosion research device and a method thereof under the conditions of alternating dry and wet conditions of multiple samples in a simulated wave splash area. Background technique [0002] The complex and harsh corrosive environment of the ocean hampers the development of marine resources, and the research on corrosion protection of marine structures has always been a hot topic for a long time. For the convenience of research, the marine corrosion environment is usually divided into: marine atmosphere area, spray splash area, tidal range area, full immersion area and sea mud area. Among them, the structure in the spray splash area has become the most severely corroded area in the ocean due to the joint action of various harsh factors such as sea water splash, sunlight exposure, alternating dry and wet, and sufficient oxygen supply on the surface. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/00G01N17/02G01N3/56
Inventor 赵卫民张体明王勇孙建波
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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