Experiments of Determining Steel Grades by Nondestructive Inspection of Leeb Hardness

WANG Ling; YANG Jianping; GUO Xiaohua

doi:10.13204/j.gyjzG21101901

Volume 52 Issue 12

Dec. 2022

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WANG Ling, YANG Jianping, GUO Xiaohua. Experiments of Determining Steel Grades by Nondestructive Inspection of Leeb Hardness[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(12): 195-199,194. doi: 10.13204/j.gyjzG21101901

Citation:

WANG Ling, YANG Jianping, GUO Xiaohua. Experiments of Determining Steel Grades by Nondestructive Inspection of Leeb Hardness[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(12): 195-199,194. doi: 10.13204/j.gyjzG21101901

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Experiments of Determining Steel Grades by Nondestructive Inspection of Leeb Hardness

doi: 10.13204/j.gyjzG21101901

1. Inspection and Certification Co., Ltd., MCC, Beijing 100088, China;
2. China Research Institute of Building and Construction Co., Ltd., MCC Group, Beijing 100088, China

Received Date: 2021-10-19
Available Online: 2023-03-22

Abstract

Abstract

Steel structure detection is an important method of steel structure quality and safety control. Steel strength or designation is an important index of steel structure detection, which provides an important basis for engineering quality evaluation, safety evaluation and reinforcement. The practice showed that the existing detection methods have some shortcomings and can not meet the requirements of engineering. In this paper, through a large number of Leeb hardness and steel tensile strength tests, the test results were statistically analyzed, a method for judging steel grade by Leeb hardness method was determined, and the limit values of Leeb hardness for Q235 and Q345 were obtained. The engineering verification showed that this method could meet the requirements of field detection and caused less damage to the original structure.
- Leeb hardness,
- nondestructive inspection method,
- determination,
- steel grade

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References(12)

References

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