Manufacturing method for tinplate

A method for manufacturing a tin-plated steel plate, wherein in a step of leveling a substrate, double-stand leveling is adopted, and use distances of a first stand work roll and a second stand work roll are ≤600 km;

• a surface roughness value Ra of the first stand work roll is in a range from 1.6 μm to 1.7 μm, and a rolling force is in a range from 5000 kN to 6000 kN;
• a surface roughness value Ra of the second stand work roll is in a range from 0.5 m to 0.6 μm, and a rolling force is in a range from 3000 kN to 4000 kN;
• in a step of electroplating the substrate, an Sn2+ concentration of an electroplating solution is in a range from 14 g/L to 19 g/L;
• in a step of passivating the substrate, a temperature of a passivation solution is in a range from 41° C. to 43° C., a pH value is in a range from 4.4 to 4.6, a concentration is in a range from 16 g/L to 18 g/L, and a passivation power density is in a range from 120 C/m2 to 180 C/m2;
• when a surface roughness value Ra and a crest number Rpc of the substrate meet 115≤100×Ra+Rpc<130, 120 C/m2≤passivation power density <150 C/m2;
• and
• when the surface roughness value Ra and the crest number Rpc of the substrate meet 130≤100×Ra+Rpc≤155, 150 C/m2≤passivation power density ≤180 C/m2;
• the unit of the surface roughness value Ra is m, and the unit of the crest number Rpc of the substrate is cm1.