GB/T 35385-2017Non-destructive testing—Practice for electromagnetic (eddy-current) sorting of ferrous metals (English PDF)
无损检测 铁磁性金属电磁（涡流）分选方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 29, 2017
Implementation date
April 1, 2018
Scope
GB/T 35385-2017 is the English-translated version of 无损检测 铁磁性金属电磁（涡流）分选方法.
GB/T 35385-2017 is the Chinese standard "Non-destructive testing—Practice for electromagnetic (eddy-current) sorting of ferrous metals".
Its scope clause reads: This standard specifies the application of electromagnetic (eddy current) detection technology for ferromagnetic metal sorting method, that is, using absolute or comparative line Circle to distinguish ferromagnetic metal in quality, shape, conductivity, permeability changes, as well as the distinction between hardness, alloy composition and ferromagnetic metal Electromagnetic properties are closely related to the variety of properties.
This standard applies to ferromagnetic metal materials sorting. Its clauses include terms and definitions; method summary.
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Document preview — GB/T 35385-2017
National Standard of the People's Republic of China
- ICS
- 19.100
- Classification
- J 04
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Method summary
1 Scope
This standard specifies the application of electromagnetic (eddy current) detection technology for ferromagnetic metal sorting method, that is, using absolute or comparative line
Circle to distinguish ferromagnetic metal in quality, shape, conductivity, permeability changes, as well as the distinction between hardness, alloy composition and ferromagnetic metal
Electromagnetic properties are closely related to the variety of properties.
This standard applies to ferromagnetic metal materials sorting.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 9445 non-destructive testing personnel qualification and certification
GB/T 12604.6 non-destructive testing term eddy current testing
3 Terms and definitions
GB/T 12604.6 defined terms and definitions apply to this document.
4 Method summary
4.1 General
The absolute (single) coil method and the comparative (double) coil method are two commonly used techniques in electromagnetic sorting. Mining is usually based on the selection decision
With absolute coil method or comparative coil method.
4.2 sorting method
4.2.1 Absolute (single) coil method
4.2.1.1 Through the coil method
Will be different contrast test blocks in turn into the detection coil, adjust the instrument to obtain the appropriate signal. Usually use 3 respectively on behalf of the file, mid-range
And the next file level comparison test block set. Then the workpiece to be seized into the test coil, the test equipment to determine whether the seizure of the workpiece
Within the required range.
4.2.1.2 placed coil method
Place the placement coil in turn on the contrast test block and adjust the instrument to obtain the appropriate signal. Usually use 3 respectively on behalf of the file, mid-range
And the next file level comparison test block set. Then the coil is placed on the workpiece under inspection, testing equipment to determine whether the workpiece under inspection
Within the required range.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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