T/JSGT 011-2021 Fully processed cold-rolled non-oriented electrical steel strip (plate)

Scope

Main Technical Content: 9. Technical Requirements 9.1 Magnetic Performance 9.1.1 For unoriented electrical steel, the maximum total loss ratio at a frequency of 50Hz shall comply with the requirements specified in Table 4. For unoriented electrical steel, the minimum magnetic polarization intensity at a frequency of 50Hz and a magnetic field strength of 5000 A/m (peak value) shall comply with the requirements specified in Table 4. 9.1.2 Except for stress-relieved annealed steel strips, the magnetic performance requirements for steel strips specified in Table 4 also apply to aging samples. Whether the aging test is conducted is at the supplier's discretion. 9.1.3 Upon the buyer's request and as specified in the contract, the anisotropy of the total loss ratio can be provided. The anisotropy of the total loss ratio (T) is calculated according to Equation (1), and its value shall comply with the requirements specified in Table 4. 9.2 Process Characteristics 9.2.1 For calculating the magnetic performance of steel and the theoretical density of laminated strips, the theoretical density specified in Table 4 shall be complied with. 9.2.2 For laminated strips, the lamination coefficient shall comply with the requirements specified in Table 4. 9.2.3 For the minimum number of bends of steel strips, the minimum number of bends specified in Table 4 shall be complied with. 9.2.4 For the insulating coating resistance, upon the buyer's request, after consultation between the buyer and the supplier and as specified in the contract, the reference minimum value of the insulating coating resistance at the delivery state, in Ω·mm2, can be provided. 9.3 Surface Quality 9.3.1 The surface of the steel strips shall be smooth and clean, without rust. If within the thickness tolerance and not affecting the normal use of the material, scattered defects such as scratches, bubbles, and cracks are allowed. 9.3.2 The insulating coating on the surface of the steel strips

Development Information

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