Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
GB/T 19345 consists of two parts under the general title Amorphous and nanocrystalline alloys as planned, and this is Part 1 of GB/T 19345.
This part is developed in accordance with the rules given in GB/T 1.1-2009.
This part replaces the part of Fe-based amorphous soft magnetic alloy in GB/T 19345-2003 Amorphous and nanocrystalline soft magnetic alloy strips.
The following main changes have been made with respect to GB/T 19345-2003:
——the name is changed to Amorphous and nanocrystalline alloys - Part 1: Fe-based amorphous soft magnetic alloy strips;
——the standard text structure is adjusted;
——the clause “Terms and definitions” is added;
——the rules for the classification and designation of strips are added;
——the magnetic property indicators of strips are modified;
——the range of dimensional deviation of strips is modified;
——the relevant requirements for sampling, specimen preparation and measurement are modified;
——the inspection method and requirements for the toughness of strips are modified;
——the measurement methods for the lamination factor of strips and the AC magnetic property of single specimen are added;
——the requirements for packaging, storage, marking and quality certificate are detailed.
This part was proposed by China Iron and Steel Association.
This part is under the jurisdiction of the National Technical Committee on Iron and Steel of Standardization Administration of China (SAC/TC 183).
The previous edition of this part is as follows:
——GB/T 19345-2003.
Amorphous and nanocrystalline alloys - Part 1: Fe-based amorphous soft magnetic alloy strips
1 Scope
This part of GB/T 19345 specifies the terms and definitions, classification and designation system, general requirements, technical requirements, inspection and measurement, packaging, storage, marking and quality certificate of rapidly quenched Fe-based amorphous soft magnetic alloy strips.
This part is applicable to Fe-based amorphous soft magnetic alloy strips (hereinafter referred to as strips) used for manufacturing iron cores of distribution transformers, intermediate frequency transformers, reactors and filter inductors.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 2900.1 Electrotechnical terminology - Fundamental terms
GB/T 9637 Electrotechnical terminology - Magnetic materials and components
GB/T 13012 Methods of measurement of d.c. magnetic properties of magnetically soft materials
GB/T 15019 Designation and classification of rapidly quenched metals
GB/T 19346.1 Amorphous and nanocrystalline alloys measurement methods - Part 1: AC magnetic properties by the use of ring specimens
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 2900.1, GB/T 9637 and GB/T 15019 as well as the following apply.
3.1
specific total loss
total power absorbed by uniformly magnetized material per unit mass, in watts per kilogram (W/kg)
3.2
specific apparent power
total apparent power transmitted to uniformly magnetized material per unit mass, in volt-ampere per kilogram (VA/kg)
3.3
lamination factor
ratio of cross-sectional area of magnetic material to the total cross-sectional area of the stack
3.4
semi-processed
state of the product that has not been subjected to final heat treatment at the time of delivery, but to be subjected to final heat treatment by the user
4 Classification and designation system
The strips are designated by the combination of chemical element symbols, English letters and Arabic numerals connected by a hyphen. The general designation form of strips is as follows:
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Classification and designation system 5 General requirements 6 Technical requirements 7 Inspection and measurement 8 Packaging, storage, marking and quality certificate 9 Order contents Annex A (Informative) Some basic physical parameters of Fe-based amorphous soft magnetic alloy strips Annex B (Normative) Method for measuring AC magnetic properties of amorphous alloy single specimen Annex C (Normative) Method for measuring lamination factor of amorphous alloy strips Annex D (Normative) Method for measuring toughness of amorphous alloy strips
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
GB/T 19345 consists of two parts under the general title Amorphous and nanocrystalline alloys as planned, and this is Part 1 of GB/T 19345.
This part is developed in accordance with the rules given in GB/T 1.1-2009.
This part replaces the part of Fe-based amorphous soft magnetic alloy in GB/T 19345-2003 Amorphous and nanocrystalline soft magnetic alloy strips.
The following main changes have been made with respect to GB/T 19345-2003:
——the name is changed to Amorphous and nanocrystalline alloys - Part 1: Fe-based amorphous soft magnetic alloy strips;
——the standard text structure is adjusted;
——the clause “Terms and definitions” is added;
——the rules for the classification and designation of strips are added;
——the magnetic property indicators of strips are modified;
——the range of dimensional deviation of strips is modified;
——the relevant requirements for sampling, specimen preparation and measurement are modified;
——the inspection method and requirements for the toughness of strips are modified;
——the measurement methods for the lamination factor of strips and the AC magnetic property of single specimen are added;
——the requirements for packaging, storage, marking and quality certificate are detailed.
This part was proposed by China Iron and Steel Association.
This part is under the jurisdiction of the National Technical Committee on Iron and Steel of Standardization Administration of China (SAC/TC 183).
The previous edition of this part is as follows:
——GB/T 19345-2003.
Amorphous and nanocrystalline alloys - Part 1: Fe-based amorphous soft magnetic alloy strips
1 Scope
This part of GB/T 19345 specifies the terms and definitions, classification and designation system, general requirements, technical requirements, inspection and measurement, packaging, storage, marking and quality certificate of rapidly quenched Fe-based amorphous soft magnetic alloy strips.
This part is applicable to Fe-based amorphous soft magnetic alloy strips (hereinafter referred to as strips) used for manufacturing iron cores of distribution transformers, intermediate frequency transformers, reactors and filter inductors.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 2900.1 Electrotechnical terminology - Fundamental terms
GB/T 9637 Electrotechnical terminology - Magnetic materials and components
GB/T 13012 Methods of measurement of d.c. magnetic properties of magnetically soft materials
GB/T 15019 Designation and classification of rapidly quenched metals
GB/T 19346.1 Amorphous and nanocrystalline alloys measurement methods - Part 1: AC magnetic properties by the use of ring specimens
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 2900.1, GB/T 9637 and GB/T 15019 as well as the following apply.
3.1
specific total loss
total power absorbed by uniformly magnetized material per unit mass, in watts per kilogram (W/kg)
3.2
specific apparent power
total apparent power transmitted to uniformly magnetized material per unit mass, in volt-ampere per kilogram (VA/kg)
3.3
lamination factor
ratio of cross-sectional area of magnetic material to the total cross-sectional area of the stack
3.4
semi-processed
state of the product that has not been subjected to final heat treatment at the time of delivery, but to be subjected to final heat treatment by the user
4 Classification and designation system
The strips are designated by the combination of chemical element symbols, English letters and Arabic numerals connected by a hyphen. The general designation form of strips is as follows:
Contents of GB/T 19345.1-2017
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and designation system
5 General requirements
6 Technical requirements
7 Inspection and measurement
8 Packaging, storage, marking and quality certificate
9 Order contents
Annex A (Informative) Some basic physical parameters of Fe-based amorphous soft magnetic alloy strips
Annex B (Normative) Method for measuring AC magnetic properties of amorphous alloy single specimen
Annex C (Normative) Method for measuring lamination factor of amorphous alloy strips
Annex D (Normative) Method for measuring toughness of amorphous alloy strips
