Method for measuring corrosion rate of steel structure in full-service life period

A technology of service life and measurement method, used in measurement devices, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve the problems of steel structure damage, corrosion layer not removed, uneven corrosion surface unevenness, and achieve convenient and accurate operation. The effect of measurement

Active Publication Date: 2013-03-13
CHINA NAT ELECTRIC APP RES INST
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Problems solved by technology

In the prior art, direct cutting and sampling analysis of the steel structure can accurately grasp the corrosion rate of the steel structure, but it will cause damage to the steel structure
In addition, linear polarization method, resistance method, coupon method, AC impedance method and other methods can be used to indirectly measure th

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  • Method for measuring corrosion rate of steel structure in full-service life period
  • Method for measuring corrosion rate of steel structure in full-service life period

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Embodiment Construction

[0030]A method for measuring the corrosion rate in the full service life cycle of a steel structure, comprising the following steps:

[0031] At the beginning of the whole life cycle, the on-site non-destructive ultrasonic thickness measurement was carried out on the atmospheric area part 1' of a seaside steel structure in Qionghai, Hainan, and the average value was taken and the initial value T of the thickness was recorded. 1’0 =3.016mm, ultrasonic thickness measurement is usually measured at a time interval of 1 year and recorded as T 1’n , where n is the service life of the steel structure, and the measured T 1’1 =2.991mm, T 1’2 =2.976mm, T 1’3 =2.962mm, T 1’4 =2.943mm, T 1’5 =2.927mm, T 1’6 =2.906mm, T 1’7 =2.888mm,T 1’8 =2.866mm.

[0032] Select A3 steel with the same material as the steel structure part 1’ to be evaluated and the thickness is similar to D 1’0 =3.005mm steel structure hanging piece, if the steel structure has welding, choose the same welding pie...

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Abstract

The invention discloses a method for measuring a corrosion rate of a steel structure in a full-service life period. The method comprises the following steps of: (1) performing field nondestructive ultrasonic thickness measurement on at least one part of the steel structure to be evaluated when the steel structure to be evaluated begins to work; (2) selecting at least one steel structure hanging piece of which the material and structure are completely same as those of the steel structure to be evaluated, arranging the steel structure hanging piece on at least one typical part with severe predicated corrosion of the steel structure to be evaluated during an initial service period of the steel structure to be evaluated, performing part labeling on the steel structure hanging piece, performing ultrasonic thickness measurement on any one part of the steel structure hanging piece, performing ultrasonic measurement on an initial thickness value of a tested part, and recording the measured value as D'1'0; (3) measuring and calculating a corrosion rate of the steel structure hanging piece; and (4) measuring and calculating the corrosion rate of the steel structure to be evaluated. The measurement method provided by the invention can be used for accurately evaluating the corrosion state of each part of the steel structure in the full-service life period without damaging the steel structure.

Description

technical field [0001] The invention relates to a method for measuring the corrosion rate of a steel structure, in particular to a method for measuring the corrosion rate in the full service life cycle of the steel structure. Background technique [0002] The damage and deterioration of steel structures under the action of various atmospheric environments spreads across various fields, bringing economic losses to production and life. In particular, it is important to note that accidental or excessive corrosion often easily leads to various occurrences of steel structures. Accidents cause more serious direct losses and indirect losses, and even endanger life safety in severe cases. [0003] In view of the above situation, how to effectively grasp the corrosion rate information of the steel structure in the whole service life cycle, accurately judge the corrosion rate of the steel structure, and carry out targeted prevention or control measures scientifically and rationally is...

Claims

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Application Information

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IPC IPC(8): G01N17/00
Inventor 黄海军陈川马坚揭敢新王俊赵钺张晓东
Owner CHINA NAT ELECTRIC APP RES INST
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