Technology for producing strip steel continuous hot-dip galvanized thin coating
A production process and thin coating technology, applied in hot dip plating process, metal material coating process, coating and other directions, can solve the problems of large environmental pollution, large differences in zinc pot composition, high cost, improve product quality, eliminate Effect of Zinc Slag Interference
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Example Embodiment
[0014] Embodiment 1. The steel plate specification of this embodiment is 0.5mm. After the galvanized steel tapping pot is galvanized, the coating is controlled by an air knife. The relevant operating parameters are as follows;
[0015] 1. Zinc pot temperature: 460℃;
[0016] 2. Effective aluminum content of zinc liquid: 0.162%;
[0017] 3. Iron content in zinc liquid: 0.0193%;
[0018] 4. The temperature of strip steel entering the zinc pot: 445℃;
[0019] 5. Running speed when strip steel passes through zinc liquid: 72m / min;
[0020] 6. Distance between air knife and strip steel: 9mm;
[0021] 7. Air knife height: 380mm;
[0022] 8. Air knife lip gap: 1.2mm;
[0023] 9. Air knife pressure: 35Kpa.
Example Embodiment
[0024] Embodiment 2. The steel plate specification of this embodiment is 0.8mm. After the galvanizing pot is galvanized, the coating is controlled by an air knife. The relevant operating parameters are as follows:
[0025] 1. Zinc pot temperature: 460℃;
[0026] 2. Effective aluminum content of zinc liquid: 0.165%;
[0027] 3. Iron content in zinc liquid: 0.0183%;
[0028] 4. The temperature of strip steel entering the zinc pot: 440℃;
[0029] 5. Running speed when strip steel passes through zinc liquid: 68m / min;
[0030] 6. Distance between air knife and strip steel: 10mm;
[0031] 7. Air knife height: 220mm;
[0032] 8. Air knife lip gap: 1.3mm;
[0033] 9. Air knife pressure: 28Kpa.
Example Embodiment
[0034] Embodiment 3, the steel plate specification of this embodiment is 0.75mm, and the galvanized steel tapping pot is galvanized and controlled by an air knife. The relevant operating parameters are as follows:
[0035] 1. Zinc pot temperature: 455℃;
[0036] 2. Effective aluminum content of zinc liquid: 0.150%;
[0037] 3. Iron content in zinc liquid: 0.0225%;
[0038] 4. The temperature of strip steel entering the zinc pot: 465℃;
[0039] 5. Running speed when strip steel passes through zinc liquid: 95m / min;
[0040] 6. Distance between air knife and strip steel: 12mm;
[0041] 7. Air knife height: 180mm;
[0042] 8. Air knife lip gap: 1.3mm;
[0043] 9. Air knife pressure: 30Kpa.
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