This standard specifies the terms and definitions, symbols and designations, general requirements, technical requirements, inspection and test, re-inspection and judgment rules as well as packaging, marking, quality certificate and order contents of cold-rolled grain non-oriented electrical steel strip (sheet).
This standard is applicable to cold-rolled grain non-oriented electrical steel strips (sheets) [hereinafter referred to as "steel strips (sheets)"] with nominal thicknesses of 0.20mm, 0.27mm, 0.30mm and 0.35mm used for making driving motors of electric vehicle.
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 of the referenced document (including any amendments) applies.
GB/T 228.1-2010 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
GB/T 228.2-2015 Metallic materials - Tensile testing - Part 2: Method of test at elevated temperature
GB/T 247 General rule of package, mark and certification for steel plates (sheets) and strips
GB/T 2521.1-2016 Cold-rolled electrical steel delivered in the fully-processed state - Part 1: Grain non-oriented steel strip (sheet)
GB/T 2522 Methods of test for the determination of surface insulation resistance and lamination factor of electric sheet and strip
GB/T 2900.60 Electrotechnical terminology - Electromagnetism
GB/T 3655 Methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame
GB/T 9637 Electrotechnical terminology - Magnetic materials and components
GB/T 17505 Steel and steel products - General technical delivery requirements
GB/T 18253 Steel and steel products - Types of inspection documents
GB/T 19289 Methods of measurement of density, resistivity and stacking factor of electrical steel sheet and strip
YB/T 4292 Methods of determination of the geometrical characteristics of electric steel sheet and strip
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 2900.60, GB/T 9637 and GB/T 2521.1-2016 apply.
4 Symbols and designations
GB/T 34215-2017 The following standards are cited: