Method for forming zinc-plated steel plate or steel belt having good corrosion resistance

A method for forming a zinc-based plated steel plate or steel belt having good corrosion resistance, comprising the following steps:

• 1) Delivering a zinc-based plated steel plate or steel belt to a heating furnace to completely austenitize the zinc-based plated steel plate or steel belt at a temperature that is higher than Ac3 and held for 1 to 7 minutes;
• wherein the zinc-based plated steel plate or steel belt comprises a substrate and a zinc-based coating on at least one surface thereof;
• 2) Cooling the zinc-based plated steel plate or steel belt after it exits the heating furnace but before it enters a forming mold, wherein it is cooled in a cooling process selected from the following cooling processes depending on coating thickness:
• for a thin-coating steel plate or steel belt having a one-side coating weight ≤50 g/m2, cooling it only in air to 800° C. or less, before it is transferred to the forming mold;
• for a thick-coating steel plate or steel belt having a one-side coating weight >50 g/m2, pre-cooling it with gas spray or water spray, and cooling the steel plate or steel belt to 700° C. or less at a cooling rate of greater than 30° C./s before it is transferred to the forming mold;
• 3) After the cooling, transferring the zinc-based plated steel plate or steel belt to the forming mold for hot stamping forming in a period of time of no more than 1 minute, wherein the hot stamping forming is performed at a temperature controlled at 400-800° C.