SOLUTION
Cold rolled silicon steel continuous decarburization annealing line (CNGO)
Degrease the surface of the cold-rolled non-oriented silicon steel (CNGO), and perform decarburization annealing and recrystallization annealing in a protective atmosphere to reduce the carbon content of the strip to the specified range, so that the crystal grains will grow and the magnetic level will be improved , Relieve stress, and apply insulation layer.
The main technical parameters
Raw material: non-oriented electrical steel (Si≤2.0%) cold rolled hardened steel coil W470-W1300
Strip carbon content: C≤50ppm
Strip thickness: 0.35-0.65mm
Strip width: 900-1250mm
Product: Electrical steel cold rolled coil
Representative specifications: 50W470-50W60050W800-50W1300
Quality Standard: GB/T2521-1996
Carbon content: C≤27ppm
Unit speed: inlet 0-200mpm, process section, 0-135mpm, outlet section 0-200mpm
Annual output: 200,000tpy
Energy-saving method: Comprehensive utilization of waste heat recovery of exhaust gas, SUNNY patent
Continuous decarburization annealing furnace: non-oxidizing heating (NOF) + full radiant tube heating (RTF), vertical and horizontal
Fuel type: natural gas, liquefied petroleum gas
Decarburization method: continuous decarburization of protective gas
Insulation coating: using roller coater + coating drying and curing
Welding equipment: narrow lap seam welder
Degreasing form: chemical degreasing + electrolytic degreasing + three-stage water rinsing, vertical or horizontal
Electrical control system: SIEMENS or ABB AC variable frequency automatic control system
Industrial automation: SIEMENS or ABB intelligent automatic control system
Main production process
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