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Accelerated corrosion test device and application method thereof

An accelerated corrosion test and detection device technology, which is applied in the field of metal corrosion and rust prevention, can solve problems such as inconsistent corrosion conditions, differences in corrosion mechanisms, and failure to reflect high temperature characteristics, and achieve the effect of simple method and safe operation

Inactive Publication Date: 2018-08-03
BAOSTEEL ZHANJIANG IRON & STEEL CO LTD +1
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  • Abstract
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Problems solved by technology

Compared with the on-site atmospheric conditions, these methods are not very suitable for studying seaside atmospheric corrosion, or the antirust packaging effect of seaside metal materials. The seaside atmosphere is generally characterized by high temperature, high humidity and salt content. In addition to the above-mentioned salt spray test, The influence of chloride ion corrosion is not considered, so the corrosion conditions are inconsistent; while the salt spray test is a continuous spray of salt-containing droplets, which is inconsistent with the physical state of the seaside atmosphere, resulting in differences in the corrosion mechanism, and the temperature of the neutral salt spray test 35°C, does not reflect the characteristics of high temperature. Therefore, when studying the corrosion and anti-rust protection technology of metals in the tropical marine environment, there is no acceleration that reflects the conditions of high temperature, high humidity and salt content, and is consistent with the physical state of the seaside atmosphere. Corrosion Test Method

Method used

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  • Accelerated corrosion test device and application method thereof

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Effect test

Embodiment 1

[0019] Such as figure 1 As shown, an accelerated corrosion test device is composed of a gas supply device, a constant temperature device, a corrosive atmosphere generator, a detection device and a waste gas treatment device; the gas supply device, the corrosive atmosphere generator, the detection device, and the waste gas treatment device are connected in sequence , the corrosive atmosphere generating device and detection device are placed in the constant temperature device;

[0020] The air supply device is composed of air source 1 and air flow meter 2. Air source 1 is compressed air generated by an air compressor or air generated by other gas generating devices; The flow rate of min~400ml / min enters the corrosive atmosphere generating device;

[0021] The constant temperature device is composed of constant temperature water bath equipment 3 with a water bath heating tank or hole, which can provide stable temperature control in the range of 40°C to 60°C for the corrosive atm...

Embodiment 2

[0030] In order to evaluate the antirust protection effect of vapor phase antirust paper on steel plates when they are stored in coastal areas, the following accelerated corrosion test method is used for testing. Use the compressed air from the air compressor as the air source 1, connect the compressed air to the inlet port of the air rotameter 2 with a control range of 40ml / min-400ml / min, and connect the outlet port to the 500ml deionized water through a hose 1. On the first wide-mouth bottle 4 with a capacity of 1L, the bottle mouth is sealed with a rubber plug, and the plug is preset with an air inlet pipe and an air outlet pipe. Part of the nozzle in the bottle is about 30mm from the bottom of the rubber stopper. The outlet of the rotameter 2 is connected to the air inlet of the first wide-mouth bottle 4 through a flexible pipe, and the air outlet is connected to the air inlet of the second wide-mouth bottle 5 having the same rubber plug and air inlet and outlet pipes thro...

Embodiment 3

[0032] In order to evaluate the corrosion resistance of a foreign galvanized sheet exposed in coastal areas, the following accelerated corrosion test method was used for evaluation. Use the air output by the electric miniature air compressor pump as the air source 1, connect the compressed air to the inlet port of the air rotameter 2 with a control range of 10ml / min-100ml / min, and connect the outlet port to a 300ml deionized Water and capacity are on the first wide-mouth bottle 4 of 1L, the bottleneck is sealed with a rubber plug, and the plug is preset with an air inlet pipe and an air outlet pipe. Part of the mouth of the trachea bottle is about 40mm from the bottom of the rubber stopper. The outlet of the rotameter 2 is connected to the air inlet of the first wide-mouth bottle 4 through a flexible pipe, and the air outlet is connected to the air inlet of the second wide-mouth bottle 5 having the same rubber plug and air inlet and outlet pipes through a flexible pipe. There...

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Abstract

The invention belongs to the technical field of metal corrosion and rust prevention, particularly relates to an accelerated corrosion test device and an application method thereof, and aims to providean accelerated corrosion test device in a laboratory with conditions closer to the field atmospheric conditions and corrosion conditions during research of metal corrosion and antirust protection technology for metal materials and rust-proof packaging parts under offshore high-temperature, high-humidity and salt-containing atmospheric conditions, so that the conditions are closer to the field actual conditions when the corrosion resistance of metal materials, the protection effect of rust-proof packaging materials or the rust-proof period of the rust-proof packaging parts are evaluated, and research results are more scientific and reliable.

Description

technical field [0001] The invention belongs to the technical field of metal corrosion and rust prevention, and in particular relates to an accelerated corrosion test device and a using method thereof. Background technique [0002] In the research process of metal corrosion and anti-rust protection technology, in order to shorten the research and evaluation time, the method of accelerated corrosion in the laboratory is generally used to simulate the corrosion of metals and the effect of anti-rust protection in the actual application process. Commonly used accelerated corrosion methods include gas phase corrosion inhibition ability (GB / T 16267), contact corrosion (GB / T 16266), gas phase antirust screening test (QB / T1319), damp heat test (GB / T 2361), neutral salt spray Test (GB / T 10125), etc. Each of these methods simulates the accelerated corrosion of metals from certain angles. For example, in order to determine the ability of gas phase rust prevention, the gas phase corros...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
CPCG01N17/006
Inventor 朱敏唐艳秋居发亮许海宁张书弟
Owner BAOSTEEL ZHANJIANG IRON & STEEL CO LTD
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