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GB/T 34495-2017 English PDF

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US$359.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 34495-2017: Hot pressed neodymium iron boron permanent magnetic materials
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 34495-2017	359	Add to Cart	4 days	Hot pressed neodymium iron boron permanent magnetic materials	Valid

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Basic data

Standard ID: GB/T 34495-2017 (GB/T34495-2017)
Description (Translated English): Hot pressed neodymium iron boron permanent magnetic materials
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H65
Classification of International Standard: 77.120.99
Word Count Estimation: 18,183
Date of Issue: 2017-10-14
Date of Implementation: 2018-05-01
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

GB/T 34495-2017: Hot pressed neodymium iron boron permanent magnetic materials

---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.
Hot pressed neodymium iron boron permanent magnetic materials ICS 77.120.99 H65 National Standards of People's Republic of China Hot NdFeB permanent magnet materials 2017-10-14 Published 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Preface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Categories and grades 2 4.1 Classification 2 4.2 grades that method 2 5 Requirements 3 5.1 Magnetic performance 3 5.2 Radial magnetization Permanent magnetic ring surface flux density (ie, the surface magnetic field strength) and air gap flux density unevenness 4 5.3 size, shape and tolerance 4 5.4 Appearance quality 5 6 test method 5 6.1 Magnetic performance 5 6.2 Surface magnetic flux density (ie, surface magnetic field strength) and air gap magnetic flux density unevenness 6 6.3 Dimensions, shape and tolerances 6 6.4 Appearance Quality 6 7 inspection rules 6 7.1 Delivery Status 6 7.2 inspection and acceptance 6 7.3 Batch 6 7.4 test items 7 7.5 Sampling and sample preparation 7 7.6 test results to determine 7 8 packaging, marking, transport, storage and quality certificate 7 8.1 packaging, logo 7 8.2 Transport, storage 7 8.3 Quality Certificate 7 Appendix A (informative) Preparation of hot-pressed NdFeB permanent magnetic materials and raw materials ratio 8 Appendix B (informative) Microstructure and main physical properties of hot-pressed NdFeB permanent magnetic materials, mechanical properties 10 Appendix C (Informative) Hot NdFeB permanent magnet material unit system and conversion table 11 Appendix D (Informative) Hot NdFeB radial magnetized permanent magnetic ring surface magnetic flux density (surface magnetic field) Typical curves and typical Demagnetization curve 14

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard by the National Rare Earth Standardization Technical Committee (SAC/TC229) and focal point. This standard drafting unit. Iron and Steel Research Institute, Beijing Branch of Central High-tech Co., Ltd., Anhui Dadi Xiong New Materials Co., Ltd., Beijing University of Technology, Institute of rare earth new materials Co., Ltd.. The main drafters of this standard. Zhu Minggang, Li Wei, Li Anhua, Fang to Kun, Rao Xiaolei, Wang Huijie, Yi Xiaofei, Yue Ming, Zhu Chen Yao, Lai Bin, Liu Guozheng, Yu Dunbo, Gao Lan, Wang Xuchao, Feng Haibo, Jiang Ruijiao, Zhang Dongtao, Zhou Dong. Hot NdFeB permanent magnet materials

1 Scope

This standard specifies the classification of hot-pressed NdFeB permanent magnetic materials and grades, requirements, test methods, inspection rules and packaging, marking, transportation, storage Save and quality certificate. This standard applies to isotropic hot NdFeB permanent magnetic materials, anisotropic hot NdFeB permanent magnet materials, mainly for aerospace, High-end CNC machine tools and robots, advanced rail transportation equipment, energy-saving and new energy vehicles, modern weapons and appliances, and other fields.

2 Normative references

The following documents for the application of this document is essential. Any reference to the date of the reference document. The date-only version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 1182 Geometrical product specifications (GPS) Geometrical tolerances Shape, orientation, position and runout tolerances Marking GB/T 2828.1 Sampling procedures for sampling inspection - Part 1. Batch inspection sampling plan retrieved by acceptance quality limit (AQL) GB/T 3217 permanent magnet (hard magnetic) material magnetic test methods GB/T 9637 Electrotechnical terminology magnetic materials and components GB/T 15676 rare earth terminology GB/T 17803 rare earth product grades that method GB/T 31967.1 Methods of testing physical properties of rare earth permanent magnetic materials - Part 1 Determination of temperature characteristics of magnetic flux GB/T 31967.2 Methods of testing physical properties of rare earth permanent magnetic materials - Part 2. Determination of flexural strength and fracture toughness

3 Terms and definitions

GB/T 9637 and GB/T 15676 define the following terms and definitions apply to this document. For ease of use, repeat below Listed in GB/T 9637 and GB/T 15676 some of the terms and definitions. 3.1 Neodymium iron boron permanent magnet material (Nd-Fe-B) Nd2Fe14B phase as the main phase of the permanent magnet material, which Nd content of the total mass percentage of rare earth maximum. 3.2 Hot-pressed rare earth permanent magnet hot-pressedrareearthpermanentmagnets The use of low temperature, short-time hot-pressing process, rare earth permanent magnet alloy powder after hot pressing or hot-pressing - thermal rheological molding process of permanent magnets. system Preparation of raw materials and ingredients ratio see Appendix A. 3.3 The main magnetic properties of principalmagneticproperties Mainly include remanence Br of permanent magnetic materials, magnetic coercive force (intrinsic coercive force) HcJ, magnetic induction coercive force HcB, maximum Magnetic energy product (BH) max. 3.4 Auxiliary magnetic properties additionalmagneticproperties Including permanent magnetic material relative recovery permeability μrec, remanence temperature coefficient α (Br), magnetic polarization coercivity (intrinsic coercivity) ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 34495-2017_English be delivered?

Answer: Upon your order, we will start to translate GB/T 34495-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 34495-2017_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 34495-2017_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.