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GB/T 19345-2003 (GBT19345-2003)

GB/T 19345-2003_English: PDF (GBT 19345-2003, GBT19345-2003)
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BASIC DATA
Standard ID GB/T 19345-2003 (GB/T19345-2003)
Description (Translated English) Amorphous and nanocrystalline soft magnetic alloy strips
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H58
Classification of International Standard 77.140.40
Word Count Estimation 7,797
Date of Issue 2003-11-03
Date of Implementation 2004-05-01
Drafting Organization CISRI
Administrative Organization Metallurgical Industry Information Standards Institute
Regulation (derived from) Chinese national standard approved by the announcement in 2003 No. 14 (No. 62 overall)
Proposing organization China Iron and Steel Industry Association
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary This standard specifies: amorphous and nanocrystalline soft magnetic alloy strip size, shape, technical requirements, test methods, inspection rules, packaging, marking and quality certification content. This standard applies to: the manufacture of distribution transformers, medium frequency transformers, high-frequency switching power transformers, pulse transformers, transformers, filter inductors and chokes, common mode inductors, magnetic amplifiers and saturation inductors, sensors, and other core and magnetic shielding amorphous and nanocrystalline soft magnetic alloy strip (hereinafter referred to as the strip).

Standards related to: GB/T 19345-2003

GB 19345-2003
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
Amorphous and nanocrystalline
soft magnetic alloy strips
ISSUED ON. NOVEMBER 3, 2003
IMPLEMENTED ON. MAY 1, 2004
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine of the People's Republic of China
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Size, shape, weight and tolerance ... 6 
4 Technical requirements ... 6 
5 Test methods ... 9 
6 Inspection rules ... 10 
7 Packaging, marking and quality certificate ... 11 
Appendix A (Informative) The basic physical parameters of amorphous and
nanocrystalline soft magnetic alloy strips ... 12 
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Size, shape, weight and tolerance ... 6 
4 Technical requirements ... 6 
5 Test methods ... 9 
6 Inspection rules ... 10 
7 Packaging, marking and quality certificate ... 11 
Appendix A (Informative) The basic physical parameters of amorphous and
nanocrystalline soft magnetic alloy strips ... 12 
Amorphous and nanocrystalline
soft magnetic alloy strips
1 Scope
This standard specifies the contents of amorphous and nanocrystalline soft
magnetic alloy strips, such as size, shape, technical requirements, test methods,
inspection rules, packaging, marking and quality certificate.
This standard applies to the manufacturing OF iron-core and amorphous and
nanocrystalline soft magnetic alloy strips for magnetic shielding use (hereinafter
referred to as strips) OF distribution transformers, intermediate frequency
transformers, high frequency switching power transformers, pulse transformers,
instrument transformers, filter inductances and reactors, common mode
inductors, magnetic amplifiers and saturable inductors, and sensors etc.
2 Normative references
The provisions of the following documents become the terms of this standard
through the references to this standard. For dated references, all subsequent
amendments (not including errata content) or revisions do not apply to this
standard. However, parties who reach an agreement based on this standard
are encouraged to study whether the latest versions of these documents are
applicable. For undated references, the latest version is applicable to this
standard.
GB/T 223.3 Methods for chemical analysis of iron, steel and alloy - The
diantipyrylmethane phosphomolybdate gravimetric method for the
determination of phosphorus
GB/T 223.6 Methods for chemical analysis of iron, steel and alloy - The
neutralization titrimetric method for the determination of boron content
GB/T 223.11 Methods for chemical analysis of iron, steel and alloy - The
persulfuric acid forging oxidation volumetric method for the determination of
chromium content
GB/T 223.12 Methods for chemical analysis of iron, steel and alloy - The
sodium carbonate separation-diphenyl carbazide photometric method for the
determination of chromium content
GB/T 223.13 Methods for chemical analysis of iron, steel and alloy - The
ammonium ferrous sulfate volumetric method for the determination of
vanadium content
GB/T 223.18 Methods for chemical analysis of iron steel and alloy - The
sodium thiosulfate separation iodimetric method for the determination of
copper content
GB/T 223.20 Methods for chemical analysis of iron steel and alloy - The
Potentiometric titration method for the determination of cobalt content
GB/T 223.25 Methods for chemical analysis of iron, steel and alloy - The
dimethylglyoxime gravimetric method for the determination of nickel content
GB/T 223.28 Methods for chemical analysis of iron, steel and alloy - The α-
benzoinoxime gravimetric method for the determination of molybdenum
content
GB/T 223.38 Methods for chemical analysis of iron, steel and alloy - The
anion-exchange separation-gravimetric method for the determination of
niobium content
GB/T 223.60 Methods for chemical analysis of iron, steel and alloy - The
perchloric acid dehydration gravimetric method for the determination of silicon
content
GB/T 223.71 Methods for chemical analysis of iron, steel and alloy - The
gravimetric method after combustion in the pipe furnace for the determination
of carbon content
GB/T 223.73 Methods for chemical analysis of iron, steel and alloy - Titanium
trioxide - potassium dichromate volumetric method for the determination of
iron content
GB/T 3654.1 Methods for chemical analysis of ferroniobium - The paper
chromatographic gravimetric method for the determination of niobium and
tantalum content
GB/T 3657 Soft magnetic alloy DC magnetic properties measurement method
GB/T 3658 Soft magnetic alloy AC magnetic properties measurement method
GB/T 19346 Measuring method of magnetic properties at alternative current
for amorphous and nanocrystalline soft magnetic alloy strips
YB/T 5242 General rules of packaging, marking and quality certification for
precision alloys
Strips shall have good flexural toughness. After testing, according to 6.5 rupture
or fracture, it shall not be produced.
4.5 Surface quality
Strip surface shall not have rust, grease, continuous oxidation tint and the
pinhole whose size is greater than 1.0 mm. There shall not be more than one
pinhole, which is visible to light, per square centimeter.
5 Test methods
5.1 Size measurement
The measurement of strip thickness shall adopt the measuring tool with
minimum division value of 0.001 mm.
The measurement of strip width shall adopt the measuring tool with minimum
division value of 0.1 mm.
5.2 Appearance test
Strip appearance shall be visually checked.
5.3 Chemical composition analysis
The chemical composition analysis of the alloy shall be conducted in
accordance with the relevant methods specified in GB/T 223.
5.4 Measurement of magnetic properties
The sample for measuring magnetic properties of strips is a toroidal core
winding around strips, and conducting heat-treated. Measurement methods are
conducted in accordance with the provisions specified in GB/T 3657, GB/T 3658
or GB/T 19346.
5.5 Test of flexural toughness
Take a strip of no less than 1 m in length, inward-facing freely; fold it back 180 °
closely to a polished steel rod with 3 mm in diameter. The entire strip is passed
through from beginning to end.
5.6 Inspection of surface quality
The surface quality of strips shall be visually inspected. The size measurement
of pinhole is carried out using the measuring tool with division value of 0.1 mm.
...