GB/T 12796-1991Permanent ferrite magnets -- Part 1: Generic specification (English PDF)

Foreword

GB/T 12796 "permanent ferrite magnets" is divided into the following sections.

--- Part 1. Generic specification;

--- Part 2. Micro-motor specification for permanent ferrite magnets.

This is Part 1 GB/T 12796 in.

Rules of the part based on GB/T 1.1-2009 given draft.

This Part replaces GB/T 12796-1991 "General specification for permanent ferrite magnets." this section compared with GB/T 12796-1991, the following changes.

a) the name of the specification and writing formats have been adjusted;

b) changing the name of some of the terms and definitions, and adds the English;

c) increasing the inspection method magnet magnetic parameters;

d) on the "primary stage of manufacture" Content has been adjusted;

e) the content of the blank detail specification has been adjusted;

f) re-edit format has been adjusted.

This part is proposed by the Ministry of Industry and Information Technology of the People's Republic of China.

This part of the National Magnetic components and ferrite materials Standardization Technical Committee (SAC/TC89) centralized.

This section drafted by. Yi Bin Jinchuan Electronics Co., Ltd.

1 Scope

This section GB/T 12796 provides for permanent ferrite magnets (hereinafter referred to as "magnet") quality assessment procedures, specification, blank detail Specification fine selection of pilot projects and measuring methods and related units, symbols and terminology also provides for the preparation of the blank detail specification rules.

This section applies to electro-acoustic, telecommunications equipment, instruments, vacuum devices, microwave devices, micro motors, magnetic separation equipment, adsorption equipment, magnetic machine Mechanical, magnetic seal devices such as isotropic and anisotropic magnets, comprising bonded magnet.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 2421.1-2008 Environmental testing for electric and electronic products and Overview Guide (IEC 60068-1. 1988, IDT) GB/T 2423.1-2008 Environmental testing for electric and electronic products Part 2. Test methods Test A. Cold (IEC 60068-2-1.

2007, IDT)

GB/T 2423.2-2008 Environmental testing for electric and electronic products Part 2. Test methods Test B. high temperature (IEC 60068-2-2.

2007, IDT)

GB/T 2423.5-1995 Environmental testing for electric and electronic products Part 2. Test methods Test Ea and guidance. Shock (idt IEC 60068-2-27. 1987) GB/T 2423.6-1995 Environmental testing for electric and electronic products Part 2. Test methods - Test Eb and guidance. Bump (idt IEC 60068-2-29. 1987) GB/T 2423.10-2008 Electrical and Electronic Products Environmental Testing Part 2. Test methods Test Fc. Vibration (sinusoidal) (IEC 60068-2-6:1995, IDT) GB/T 2828.1-2003 Sampling procedures for inspection - Part 1. by acceptance quality limit (AQL) retrieval batch test sample Program (ISO 2859-1:1999, IDT) GB 3100 International System of Units and its application (GB 3100-1993, eqvISO 1000.1992) GB 3101 general principles relating to amounts, units and symbols (GB 3101-1993, eqvISO 31-0.1992) GB/T 3217-1992 permanent magnet (magnetically hard) materials magnetic measurements (neqIEC 60404-5. 1982) GB/T 9634 (all parts) ferrite core surface defect limit guidelines (IEC 60424, IDT) GB/T 9637-2001 Electrotechnical terminology Magnetic materials and components (eqvIEC 60050 (221).1990) Electrotechnical IEC 60027 Letter symbols IEC 60617 Graphical symbols for diagrams IEC QC001002 electronic components IEC quality assessment system of procedural rules

3 General Technical Information