Preparation method of core cold continuous casting and rolling large-length anti-icing and deicing intelligent contact wire

The invention relates to a preparation method of a core cold continuous casting and rolling large-length anti-icing and deicing intelligent contact line, which comprises the following steps: a steel wire rope with a built-in composite rod enters an inner die cavity, molten copper and copper magnesium alloy furnace water enter an outer die cavity, reverse cooling water enters a multi-layer reverse cooling circulation system and passes through each annular cavity from inside to outside in a snake shape, and the steel wire rope is kept at normal temperature all the time; the copper water and the copper-magnesium alloy furnace water are cooled by a second cooling circulation system to form solid states respectively; and the steel wire rope, the compounded solid copper and the copper-magnesium alloy are subjected to reducer treatment, multi-pass reducing rolling and drawing to finally form the copper-steel composite wire. According to the invention, copper and the steel wire rope with the built-in composite rod ar