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GB/T 19345-2003 English PDF (GBT19345-2003)

GB/T 19345-2003 English PDF (GBT19345-2003)

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GB/T 19345-2003: Amorphous and nanocrystalline soft magnetic alloy strips

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.
GB 19345-2003
GB
NATIONAL STANDARD OF THE
PEOPLE 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 ??- 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.

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