This part of GB/T 34370 specifies magnetic particle testing methods for amusement equipments such as the yoke method, coil method and galvanization method as well as the requirements for quality grading.
This part is applicable to the testing of surface and near surface flaws of ferromagnetic raw materials, parts and components and welded joints of the amusement equipments.
This part is not applicable to the testing of austenitic stainless steel and other non-ferromagnetic materials.
2 Normative References
The following documents are indispensable for the application of this standard. For dated reference, only the dated editions are applicable to this document. For undated reference, the latest edition (including any amendments) applies.
GB/T 5097 Non-destructive Testing - Penetrant Testing and Magnetic Particle Testing - Viewing Conditions
GB/T 11533 Standard for Logarithmic Visual Acuity Charts
GB/T 12604.5 Non-destructive Testing - Terminology - Terms Used in Magnetic Particle Testing
GB/T 20306 Amusement Devices Terminology
GB/T 20737 Non-destructive Testing - General Terms and Definitions
GB/T 23907 Non-destructive Testing - Shims for Magnetic Particle Testing
GB/T 34370.1 Nondestructive Testing of Amusement Equipments - Part 1: General Requirement
JB/T 6063 Non-destructive Testing - Materials for Magnetic Particle Testing
JB/T 8290 Non-destructive Testing Instruments - Magnetic Particle Flaw Detectors
3 Terms and Definitions
For the purpose of this standard, the following terms and definitions given in GB/T 12604.5, GB/T 20306 and GB/T 20737 as well as the following ones apply.
3.1
excessive background
magnetic particle indication background that hinders the analysis and evaluation of magnetic particle indication due to excessive magnetic field strength and concentration of the magnetic ink which result in the roughness or contamination of the workpiece surface
3.2
relevant indication
relevant indication, also know as flaw indication, refers to magnetic particle indication formed during magnetic particle testing due to adsorption of magnetic particles by magnetic leakage field generated by such flaws as crack, incomplete fusion, pore and slag
3.3
non-relevant indication
magnetic particle indication formed due to adsorption of magnetic particles by magnetic leakage field as a result of abrupt change in section and difference in permeability of materials
3.4
false indication
fade indication
GB/T 34370.3-2017 The following standards are cited：
GB/T 34370.3-2017 Cited by the following standards：
