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GB/T 3658-2008   Methods of measurement of a.c. magnetic properties of magnetically soft materials (English Version)
Standard No.: GB/T 3658-2008 Status:superseded remind me the status change

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Language:English File Format:PDF
Word Count: 11000 words Price(USD):330.0 remind me the price change

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Implemented on:2009-5-1 Delivery: via email in 1 business day
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Standard No.: GB/T 3658-2008
English Name: Methods of measurement of a.c. magnetic properties of magnetically soft materials
Chinese Name: 软磁材料交流磁性能环形试样的测量方法
Chinese Classification: H21    Metal physical property test method
Professional Classification: GB    National Standard
ICS Classification: 77.040.99 77.040.99    Other methods of testing of metals 77.040.99
Issued by: AQSIQ; SAC
Issued on: 2008-10-10
Implemented on: 2009-5-1
Status: superseded
Superseded by:GB/T 3658-2022 Methods of measurement of the magnetic properties of magnetically soft metallic and powder materials at frequencies in the range 20 Hz to 100 kHz by the use of ring specimens
Superseded on:2022-10-12
Abolished on:2022-10-12
Superseding:GB/T 5026-1985 The measurement method of amplitude permeability of soft magnetic alloys
GB/T 3658-1990 Soft magnetic alloys--Measuring method for alternative magnetic properties
Language: English
File Format: PDF
Word Count: 11000 words
Price(USD): 330.0
Delivery: via email in 1 business day
1 Scope This standard specifies the test methods of AC magnetic properties of materials other than electrical steel and soft ferrite in the frequency range of 20Hz to 20kHz. Materials involved in this standard include: special alloys listed in IEC 60404-8-6; pressing, sintering and metal injection molding components listed in IEC 60404-8-9; and soft magnetic composite materials for castings. The purpose of this standard is to clarify the general rules and technical details of testing the magnetic properties of soft magnetic materials by the use of ring specimens. For powdery materials, ring specimens shall be made by proper extrusion. The DC magnetic properties of soft magnetic materials shall be measured according to the ring specimen measurement method in IEC 60404-4. The measurement of magnetic characteristics of soft magnetic elements shall be carried out according to IEC 62044-3: 2000. Generally, testing shall be carried out at the ambient temperature of (23±5)°C, and the ring specimens shall be demagnetized before testing. Testing may be carried out in other temperature ranges upon negotiation by both parties. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments (excluding correction of error) to, or revisions of, any of these publications do not apply. However, parties to agreements based on this national standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies. GB/T 3655 Methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame (GB/T 3655—2008, IEC 60404-2: 1996, Methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame, IDT) IEC 60404-4 Soft magnetic materials — Part 4: Measurement methods of DC magnetic properties of soft magnetic materials IEC 60404-8-6 Magnetic materials — Part 8-6: Technical requirements of individual materials Soft magnetic metal materials IEC 60404-8-9 Magnetic materials — Part 8-9: Technical requirements of individual materials — Sintered soft magnetic materials IEC 62044-3: 2000 Measurement method of magnetic cores made of soft magnetic materials — Part 3: Magnetic properties under high magnetization field 3 General The measurement is carried out under the closed magnetic circuit of ring specimens with one or two windings. 3.1 Test specimen Ring specimens with rectangular cross section made in the following different ways shall be adopted: a) a clock spring-shaped iron core formed by winding a thin strip or wire; b) ring specimen laminations formed by punching, laser cutting or photochemical etching; c) powder pressing and sintering, metal injection molding or casting. For powder materials, if the ring specimens are made by metal injection molding or pressing (and possibly heating), these methods shall be carried out according to the suggestions of the material manufacturer to achieve the best magnetic properties of the powder materials. For all types of test specimens, burrs and sharp edges shall be removed before heat treatment. For soft magnetic alloys, the ring specimens shall be put in a ring box which can be divided into two parts; and for test specimens without insulation layer, appropriate insulation measures shall be taken when stacking them. For high permeability materials, it is best to put the ring specimens in a ring box which can be divided into two parts. The size of the box shall closely match with the test specimens to avoid stress in the material. The ratio of the outer diameter to the inner diameter of the test specimen size shall be no greater than 1.4, preferably less than 1.25. For the belt materials with thickness less than 0.15mm, a strip with width of 10mm shall be taken along the rolling direction, coated with an insulating layer and wound into a ring specimen. For solid and powder pressed materials, the dimensions of the test specimen, that is, the outer diameter, inner diameter and height of the ring specimen, shall be measured by an appropriate and calibrated measuring tool, and the accuracy of the measuring tool shall be ±0.02mm or better. The relevant dimensions shall be measured at different positions of the test specimen, and the average value shall be calculated. The cross-sectional area of the test specimen shall be calculated from Equation (1):
Foreword iii 1 Scope 2 Normative references 3 General 3.1 Test specimen 3.2 Winding 4 Temperature measurement 5 Measurement of permeability and magnetization curve by V-A method 6 Measure the specific total loss with power meter 7 Measuring magnetic properties by the use of digital impedance bridge 8 Measuring magnetic properties by digital method 9 Reproducibility 10 Test report Annex A (Informative) Comparison between this standard and IEC 60404-6: 2003 in clause number Annex B (Informative) Technical differences and their causes between this standard and IEC 60404-6: 2003 Annex C (Informative) Requirements for windings and apparatuses used in order to minimize additional losses Annex D (Informative) Digital control method of sine waveform Annex E (Informative) Modified Hay's bridge measurement method
GB/T 3658-2008 is referred in:
* GB/T 19345-2003 Amorphous and nanocrystalline soft magnetic alloy strips
*GB/T 14986-2008 High saturation magnetic induction magnetic compensate alloys depending on temperature variation corrosion-resisting iron-aluminium Permanent permeability soft magneticalloys
Code of China
Standard
GB/T 3658-2008  Methods of measurement of a.c. magnetic properties of magnetically soft materials (English Version)
Standard No.GB/T 3658-2008
Statussuperseded
LanguageEnglish
File FormatPDF
Word Count11000 words
Price(USD)330.0
Implemented on2009-5-1
Deliveryvia email in 1 business day
Detail of GB/T 3658-2008
Standard No.
GB/T 3658-2008
English Name
Methods of measurement of a.c. magnetic properties of magnetically soft materials
Chinese Name
软磁材料交流磁性能环形试样的测量方法
Chinese Classification
H21
Professional Classification
GB
ICS Classification
Issued by
AQSIQ; SAC
Issued on
2008-10-10
Implemented on
2009-5-1
Status
superseded
Superseded by
GB/T 3658-2022 Methods of measurement of the magnetic properties of magnetically soft metallic and powder materials at frequencies in the range 20 Hz to 100 kHz by the use of ring specimens
Superseded on
2022-10-12
Abolished on
2022-10-12
Superseding
GB/T 5026-1985 The measurement method of amplitude permeability of soft magnetic alloys
GB/T 3658-1990 Soft magnetic alloys--Measuring method for alternative magnetic properties
Language
English
File Format
PDF
Word Count
11000 words
Price(USD)
330.0
Keywords
GB/T 3658-2008, GB 3658-2008, GBT 3658-2008, GB/T3658-2008, GB/T 3658, GB/T3658, GB3658-2008, GB 3658, GB3658, GBT3658-2008, GBT 3658, GBT3658
Introduction of GB/T 3658-2008
1 Scope This standard specifies the test methods of AC magnetic properties of materials other than electrical steel and soft ferrite in the frequency range of 20Hz to 20kHz. Materials involved in this standard include: special alloys listed in IEC 60404-8-6; pressing, sintering and metal injection molding components listed in IEC 60404-8-9; and soft magnetic composite materials for castings. The purpose of this standard is to clarify the general rules and technical details of testing the magnetic properties of soft magnetic materials by the use of ring specimens. For powdery materials, ring specimens shall be made by proper extrusion. The DC magnetic properties of soft magnetic materials shall be measured according to the ring specimen measurement method in IEC 60404-4. The measurement of magnetic characteristics of soft magnetic elements shall be carried out according to IEC 62044-3: 2000. Generally, testing shall be carried out at the ambient temperature of (23±5)°C, and the ring specimens shall be demagnetized before testing. Testing may be carried out in other temperature ranges upon negotiation by both parties. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments (excluding correction of error) to, or revisions of, any of these publications do not apply. However, parties to agreements based on this national standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies. GB/T 3655 Methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame (GB/T 3655—2008, IEC 60404-2: 1996, Methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame, IDT) IEC 60404-4 Soft magnetic materials — Part 4: Measurement methods of DC magnetic properties of soft magnetic materials IEC 60404-8-6 Magnetic materials — Part 8-6: Technical requirements of individual materials Soft magnetic metal materials IEC 60404-8-9 Magnetic materials — Part 8-9: Technical requirements of individual materials — Sintered soft magnetic materials IEC 62044-3: 2000 Measurement method of magnetic cores made of soft magnetic materials — Part 3: Magnetic properties under high magnetization field 3 General The measurement is carried out under the closed magnetic circuit of ring specimens with one or two windings. 3.1 Test specimen Ring specimens with rectangular cross section made in the following different ways shall be adopted: a) a clock spring-shaped iron core formed by winding a thin strip or wire; b) ring specimen laminations formed by punching, laser cutting or photochemical etching; c) powder pressing and sintering, metal injection molding or casting. For powder materials, if the ring specimens are made by metal injection molding or pressing (and possibly heating), these methods shall be carried out according to the suggestions of the material manufacturer to achieve the best magnetic properties of the powder materials. For all types of test specimens, burrs and sharp edges shall be removed before heat treatment. For soft magnetic alloys, the ring specimens shall be put in a ring box which can be divided into two parts; and for test specimens without insulation layer, appropriate insulation measures shall be taken when stacking them. For high permeability materials, it is best to put the ring specimens in a ring box which can be divided into two parts. The size of the box shall closely match with the test specimens to avoid stress in the material. The ratio of the outer diameter to the inner diameter of the test specimen size shall be no greater than 1.4, preferably less than 1.25. For the belt materials with thickness less than 0.15mm, a strip with width of 10mm shall be taken along the rolling direction, coated with an insulating layer and wound into a ring specimen. For solid and powder pressed materials, the dimensions of the test specimen, that is, the outer diameter, inner diameter and height of the ring specimen, shall be measured by an appropriate and calibrated measuring tool, and the accuracy of the measuring tool shall be ±0.02mm or better. The relevant dimensions shall be measured at different positions of the test specimen, and the average value shall be calculated. The cross-sectional area of the test specimen shall be calculated from Equation (1):
Contents of GB/T 3658-2008
Foreword iii 1 Scope 2 Normative references 3 General 3.1 Test specimen 3.2 Winding 4 Temperature measurement 5 Measurement of permeability and magnetization curve by V-A method 6 Measure the specific total loss with power meter 7 Measuring magnetic properties by the use of digital impedance bridge 8 Measuring magnetic properties by digital method 9 Reproducibility 10 Test report Annex A (Informative) Comparison between this standard and IEC 60404-6: 2003 in clause number Annex B (Informative) Technical differences and their causes between this standard and IEC 60404-6: 2003 Annex C (Informative) Requirements for windings and apparatuses used in order to minimize additional losses Annex D (Informative) Digital control method of sine waveform Annex E (Informative) Modified Hay's bridge measurement method
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Keywords:
GB/T 3658-2008, GB 3658-2008, GBT 3658-2008, GB/T3658-2008, GB/T 3658, GB/T3658, GB3658-2008, GB 3658, GB3658, GBT3658-2008, GBT 3658, GBT3658