Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method for measuring corrosion rate of steel member by using electromagnet

A technology of steel components and electromagnets, which is applied in the field of steel structure performance testing, can solve the problems of unestimable rust pit depth and inaccurate rust rate, etc., and achieve the effect of ensuring testing accuracy, simple method and high accuracy.

Pending Publication Date: 2021-09-17
TONGJI UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the case where the exact corrosion rate cannot be known, the grid method is usually chosen to calculate the surface corrosion rate of the component. However, this method cannot estimate the depth of rust pits at all while the corrosion rate is not accurate enough

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for measuring corrosion rate of steel member by using electromagnet
  • Method for measuring corrosion rate of steel member by using electromagnet
  • Method for measuring corrosion rate of steel member by using electromagnet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] A method for measuring the corrosion rate of steel components using an electromagnet, such as figure 1 As shown, the back electromagnet 1, the front electromagnet 2, the iron powder 3, the antistatic plastic film 4, and the antistatic plastic sheet 5 are used during the test.

[0031] Before measurement, according to the degree of corrosion of the steel components and the difficulty of operation at the measurement location, select an antistatic plastic film 4 with a suitable opening size, scrape off the surface rust of the area to be measured with a wire brush, and then attach the electromagnet 1 on the back to the surface to be measured. On the surface of the component at the center of the back of the area, stick the antistatic plastic film 4 with the opening on the area to be measured after being wetted with water, and discharge the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for measuring the corrosion rate of a steel member by using an electromagnet, which comprises the following steps of: placing the electromagnet connected with a power supply on the back surface opposite to the corrosion surface of the steel member to be measured, filling the corrosion area of the corrosion surface of the steel member with iron powder after the electromagnet is electrified, so that the corrosion area is filled with the iron powder; slicking and removing redundant iron powder, then powering off the electromagnet, collecting the filled iron powder, calculating the volume of the iron powder, namely the volume of the rust pit, and further calculating the local corrosion rate of the measured part. Compared with the prior art, the method is time-saving and efficient, can be used for conveniently carrying out on-site testing on components, is suitable for test pieces in any shape, and can be used for randomly changing the size of a measurement area.

Description

technical field [0001] The invention relates to the technical field of steel structure performance detection, in particular to a method for measuring the corrosion rate of steel components by using an electromagnet. Background technique [0002] In the field of civil engineering, steel components are one of the most widely used building materials in the world. However, due to the corrosion of steel components in various environments, the cross-sectional area of ​​steel components is weakened, and the tensile strength of steel components is reduced. And Due to the uneven depth distribution caused by pitting, it is easy to cause stress concentration and reduce the fatigue strength of components. Every year, the direct economic loss caused by steel corrosion in our country is as high as hundreds of billions of yuan. Therefore, the impact on the durability of steel components caused by corrosion is an urgent problem that needs to be solved in current projects. [0003] The curr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
CPCG01N17/006
Inventor 余倩倩常安张伟平顾祥林窦晓静
Owner TONGJI UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com