GB/T 11260-2023 (English Version)

Standard No.: GB/T 11260-2023
Language: Chinese, English version preview
Release Date: 2023
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 11260-2023
Replace: GB/T 11260-2008

Scope: This standard specifies the non-destructive testing methods for round steel.

Introduction

1. Background and significance of standard formulation

GB/T 11260-2023 Eddy Current Testing Method for Round Steel is the latest national standard issued by the People's Republic of China, which is used to regulate the eddy current testing (ECT) technology for surface and near-surface defects of round steel. This standard replaces the previous GB/T 11260-2008, and has made a number of technical improvements and clause optimizations on the original basis.

With the rapid development of the steel industry, the requirements for the quality of round steel are increasing. Eddy current testing, as an efficient non-destructive testing method, plays an important role in ensuring product quality and reducing scrap rate. The release and implementation of this standard further enhances the standardization and scientificity of the application of eddy current testing technology.

2. Comparative analysis of standard frameworks

Standard versions	Main differences	Technical improvements
GB/T 11260-2008	Does not include general requirements for detection and array detection methods	- Added technical requirements for magnetic saturation devices and demagnetization devices- Clarified the detection standards for rotating probes
GB/T 11260-2023	New chapters: General principles for detection systems Equipment parameter verification Implementation suggestions	- Introduced array detection technology- Standardized the artificial defect processing method of the comparison sample - clarified the residual magnetism requirements after demagnetization treatment

3. Technological evolution and practical application

Eddy current testing (ECT) principle:When AC current passes through the detection coil, eddy currents will be generated on the surface of round steel. The distortion of eddy currents will cause changes in coil impedance, thereby reflecting the presence of defects.

3.1 Classification of detection methods

Through-type detection:Suitable for mass production, high efficiency but high requirements for equipment accuracy.
Rotary detection:Suitable for complex workpieces, strong flexibility but complex operation.
Array detection: High detection coverage, suitable for products with high precision requirements.

4. Implementation suggestions

In order to ensure the effectiveness of eddy current detection, it is recommended to follow the following principles in actual application:

Select the appropriate probe type according to the round steel specifications.
Regularly calibrate equipment parameters to ensure detection sensitivity.
Optimize the detection process and reduce human interference.
Strengthen operator training and improve the level of detection technology.

GB/T 11260-2023 Referenced Document

GB/T 12604.6 Non-destructive testing—Terminology—Eddy current testing
GB/T 14480.1 Nondestructive Testing Instruments Eddy Current Testing Equipment Part 1: Instrument Performance and Inspection
GB/T 14480.2 Nondestructive Testing Instruments Eddy Current Testing Equipment Part 2: Probe Performance and Inspection
GB/T 9445 Qualification and certification of non-destructive testing personnel*， 2024-09-29 Update
YB/T 145 Die casting and size measurement method of artificial defects on the reference sample pipes
YB/T 4083 Comprehensive performance testing method of automatic eddy current testing system for steel pipes and steel rods

GB/T 11260-2023 history

2023 GB/T 11260-2023 Eddy current testing method for round steel
2008 GB/T 11260-2008 Round steel.The inspection method for eddy current test
1996 GB/T 11260-1996 Round steel--The inspection method for pass type eddy current test