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GB/T 31212-2014 English PDF

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GB/T 31212-2014: Non-destructive testing -- Magnetic flux leakage testing -- General principles
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GB/T 31212-2014English279 Add to Cart 3 days [Need to translate] Non-destructive testing -- Magnetic flux leakage testing -- General principles Valid GB/T 31212-2014

PDF similar to GB/T 31212-2014


Standard similar to GB/T 31212-2014

GB/T 32335   GB/T 32073   GB/T 28784.2   GB/T 31211.2   GB/T 31211.1   GB/T 31206   

Basic data

Standard ID GB/T 31212-2014 (GB/T31212-2014)
Description (Translated English) Non-destructive testing -- Magnetic flux leakage testing -- General principles
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J04
Classification of International Standard 19.100
Word Count Estimation 12,194
Date of Issue 9/3/2014
Date of Implementation 5/1/2015
Quoted Standard GB/T 9445; GB/T 12604.5; GB/T 12604.6; NB/T 47013.3
Regulation (derived from) People's Republic of China Announcement of Newly Approved National Standards No. 21 of 2014
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This Standard specifies ferromagnetic materials and components of general principles of magnetic flux leakage detection. This Standard is applicable to magnetic flux leakage testing material elements and components of rope, bars, rods, tubes, plates and o

GB/T 31212-2014: Non-destructive testing -- Magnetic flux leakage testing -- General principles

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Non-destructive testing. Magnetic flux leakage testing. General principles ICS 19.100 J04 National Standards of People's Republic of China NDT Magnetic Flux Leakage Testing General Issued on. 2014-09-03 2015-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard non-destructive testing by the National Standardization Technical Committee (SAC/TC56) made and centralized. This standard was drafted. China Special Equipment Inspection and Research Institute, Huazhong University of Science and Technology, Guangzhou City Special Pressure Equipment Inspection and Research Institute, Beijing Hang Seng Kehai Technology Co., Ltd. Shandong Ruixiang Mould Co., Shanghai Research Institute of Materials, Hebei Duo Detection Technology Co., Ltd., Shandong Branch Czech Engineering Testing Co., Ltd., Anhui Chinese high-tech development of a limited liability company. Drafters of this standard. Shen Tian Gong, Wuxin Jun, Yu Yue, Tang East Court, Li Guanghai, Hu Bin, Chen Admiralty, high Kwong Hing, Liu Deyu, Ye Weiwen, A Lin Yuan, Duan Qing Confucianism, Weizhong Rui, Li Qinghua, Cheng Shiqi, Jinyu Fei, Yuan Haijiang, Liang Yumei, Li atlas. NDT Magnetic Flux Leakage Testing General

1 Scope

This standard specifies the general principle of ferromagnetic materials and components magnetic flux leakage detection. Magnetic flux leakage inspection This standard applies to ropes, rods, bars, tubes, plates and other rules of material element geometry and components.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 9445 NDT personnel qualification and certification GB/T 12604.5 Terminology for nondestructive testing - Magnetic particle testing GB/T 12604.6 Terminology for nondestructive testing Eddy current testing NB/T 47013.3 pressure equipment NDT ultrasonic testing

3 Terms and Definitions

GB/T 12604.5 and GB/T 12604.6 defined and the following terms and definitions apply to this document. 3.1 Defects equivalent defectequivalent With a particular value or common law equivalent amount, in accordance with this standard is specific signal characteristics obtained given the magnitude of the defect. 3.2 Defects quantization defectsizing According to signal characteristics obtained are given defect geometry description. 4. Summary 4.1 Principle of magnetic flux leakage detection method The principle of magnetic flux leakage testing shown in Figure 1. When the ferromagnetic member is applied magnetizing, generates a magnetic field within the member, if the member The presence of corrosion or mechanical damage and other defects, the magnetic field lines will leak to the outside member, thereby forming a leakage magnetic field on the surface, as in the middle of magnetizer Place - a magnetic field sensor (usually a Hall element or a magnetic field sensor coil) can be detected by the leakage magnetic field due to the leakage magnetic field strength The depth and size of the defect, it can signal by the leakage magnetic field analysis to obtain the occurrence of defects on the member. Figure 2 is the measured Different amounts of magnetic field components of a typical signal Fig.

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