GB/T 13560-2017 PDF in English
GB/T 13560-2017 (GB/T13560-2017, GBT 13560-2017, GBT13560-2017)
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Name of Chinese Standard | Status |
| GB/T 13560-2017 | English | 185 |
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Sintered neodymium iron boron permanent magnets
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| GB/T 13560-2009 | English | 70 |
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Materials for sintered neodymium iron boron permanent magnets
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| GB/T 13560-2000 | English | 359 |
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Materials for sintered neodymium iron boron permanent magnets
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| GB/T 13560-1992 | English | RFQ |
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Materials for sintered Nd-Fe-B permanent magnets
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Standards related to (historical): GB/T 13560-2017
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GB/T 13560-2017: PDF in English (GBT 13560-2017) GB/T 13560-2017
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.150.99
H 65
Replacing GB/T 13560-2009
Sintered neodymium iron boron permanent magnets
ISSUED ON. OCTOBER 14, 2017
IMPLEMENTED ON. MAY 01, 2018
Issued by. General Administration of Quality Supervision Inspection and
Quarantine of PRC;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Material classification and grades ... 7
5 Requirements ... 8
6 Test methods ... 11
7 Inspection rules ... 11
8 Marking, packaging, transportation, storage and quality certificate ... 12
Appendix A (Normative) Size and shape & position deviation of sintered
neodymium iron boron permanent magnets ... 14
Appendix B (Informative) Additional magnetic properties and main mechanical
and physical properties of sintered neodymium iron boron permanent magnets
... 15
Appendix C (Informative) Chemical composition, manufacturing process and
application of sintered neodymium iron boron permanent magnets ... 17
Appendix D (Informative) Magnetic properties unit system, conversion table and
grade magnetic properties comparison of sintered neodymium iron boron
permanent magnets ... 19
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 13560-2009 “Sintered neodymium iron boron
permanent magnets”.
As compared with GB/T 13560-2009, the main technical changes of this
standard are as follows.
- ADD normative references GB/T 15676 “Terms for rare earths”, GB/T 24270
“Method of measurement of temperature coefficient of magnetic properties
of permanent magnetic materials”, GB/T 29628 “Guides for methods of
measurement of the magnetic properties of permanent (magnetically hard)
materials by pulsed field magnetometry”, GB/T 34491 “Coatings for
sintered neodymium iron boron permanent magnets” (see clause 2);
- ADD the terms and definitions of irreversible flux loss and maximum
operating temperature (see 3.3, 3.4);
- ADD the character grades and examples (see 4.3);
- ADD some material grades, MODIFY the magnetic parameters of some
grades, ADD the squareness parameters (see Table 1);
- MODIFY the test method. The main magnetic performance test methods
for types N, M, H, SH and UH materials are carried out in accordance with
the provisions of GB/T 3217. The principal magnetic properties test
methods for EH and TH materials are carried out in accordance with GB/T
29628 (see 6.1);
- ADD the test method, 6.2 The test method of material remanence
temperature coefficient and intrinsic coercivity temperature coefficient shall
be carried out in accordance with the provisions of GB/T 24270 (see 6.2);
- MODIFY the deviation of the sintering surface of Table A.1 in Appendix A
(see Table A.1);
- MODIFY the Appendix B, SPLIT the Table B.1 into Table B.1. The additional
magnetic properties of the sintered neodymium iron boron permanent
magnets and Table B.2. The mechanical and physical properties of the
sintered neodymium iron boron permanent magnets, meanwhile MODIFY
some parameters, ADD the bending strength and maximum operating
temperature parameters (see Table B.1 and Table B.2);
- ADD the chemical composition of the neodymium iron boron permanent
magnets in Appendix C (see Table C.1);
Sintered neodymium iron boron permanent magnets
1 Scope
This standard specifies the requirements, test methods, inspection rules and
markings, packaging, transportation, storage and quality certificates of sintered
neodymium iron boron permanent magnets.
This standard applies to sintered neodymium iron boron permanent magnets
produced by powder metallurgy.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 2828.1-2012 Sampling procedures for inspection by attributes - Part 1.
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection
GB/T 3217 Permanent magnet (magnetically hard) materials - Methods of
measurement of magnetic properties
GB/T 8170 Rules of rounding off for numerical values & expression and
judgement of limiting values
GB/T 9637 Electrotechnical terminology - Magnetic materials and
components
GB/T 15676 Terms for rare earths
GB/T 24270 Method of measurement of temperature coefficient of magnetic
properties of permanent magnetic materials
GB/T 29628 Guides for methods of measurement of the magnetic properties
of permanent (magnetically hard) materials by pulsed field magnetometry
GB/T 34491 Coatings for sintered neodymium iron boron permanent
magnets
A permanent magnet cylinder sample with a thermal demagnetization state
of L/D = 0.7 (diameter D, height L), after saturation magnetization, is heated
from room temperature to a constant temperature for 2 h in an open circuit
state, then cooled to room temperature, its open circuit irreversible flux loss
≤ 5% of the maximum holding temperature.
4 Material classification and grades
4.1 Material classification
Sintered neodymium iron boron permanent magnet is divided into low coercivity
N, medium coercivity M, high coercivity H, super-high coercivity SH, ultra-high
coercivity UH, extremely high coercivity EH, top high coercivity TH in
accordance with the intrinsic coercivity.
4.2 Material grade
Each type of product is divided into several grades in accordance with the
maximum magnetic energy product. Each grade of material can be processed
into permanent magnet parts of various shapes and specifications such as
discs, cylinders, rings and tiles.
4.3 Character grade representation method
The grade of sintered neodymium iron boron permanent magnets is composed
of material manufacturing characteristics, main name and magnetic
characteristics. The first part S indicates the manufacturing characteristics of
the material, which uses the Chinese phonetic alphabet S to indicate the
sintered material produced by the powder metallurgy sintering process; the
second part is the main name, which is composed of the element symbol Nd of
neodymium, the element symbol Fe of iron and the element symbol B of boron,
that is, NdFeB; the third part is the number before the slash, which is the
nominal value (unit is kJ/m3) of the maximum magnetic energy product (BH)max
of the sintered neodymium iron boron permanent magnets; the fourth part is the
number after the slash, which is one-tenth of the minimum value (in kA/m) of
the coercivity HcJ in the sintered neodymium iron boron permanent magnets,
and the value is rounded off.
Indicates one-tenth of the minimum value of HcJ
Indicates the nominal value of (BH)max
Indicates sintered material produced by powder
metallurgy sintering process
Indicates neodymium iron boron
magnetic properties of the product, see Appendix D.
6 Test methods
6.1 The principal magnetic property test methods for type N, M, H, SH and UH
materials shall be carried out in accordance with the provisions of GB/T 3217.
The principal magnetic property test methods for EH and TH materials shall be
carried out in accordance with the provisions of GB/T 29628.
6.2 The test method of the remanence temperature coefficient and the intrinsic
coercivity temperature coefficient of the material shall be carried out in
accordance with the provisions of GB/T 24270.
6.3 Product size and shape & position deviation shall be tested by gages that
meet the accuracy requirements and meet the national measurement standards,
or otherwise tested by special gauges confirmed by both parties through
negotiation.
6.4 Appearance quality of the product shall be visually inspected.
6.5 Coating test method shall be carried out in accordance with the provisions
of GB/T 34491.
6.6 The numerical rounding off shall be carried out in accordance with the
provisions of GB/T 8170.
7 Inspection rules
7.1 Inspection and acceptance
7.1.1 The product shall be inspected by the supplier’s quality inspection
department, to ensure that the materials meet the requirements of this standard,
meanwhile the quality certificate shall be filled.
7.1.2 The acquirer shall inspect the products received in accordance with the
provisions of this standard. If the inspection result is inconsistent with the
provisions of this standard, it shall be submitted to the supplier within one month
from the date of receipt of the product, to be settled through negotiation
between the supplier and the purchaser. If arbitration is required, it shall be
jointly sampled at the purchaser’s premise and tested by the organization which
is jointly recognized by both parties.
7.2 Batching
Each batch of product shall consist of the materials of the same specification
and size made by same grades through same production process.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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