High-temperature-resistant corrosion-resistant ultrathin-wall automobile wire for cylinder penetration and preparation method thereof

A high-temperature-resistant and corrosion-resistant ultrathin-wall automobile wire for cylinder penetration comprises a conductive wire core and a fluoroplastic insulating layer, and the fluoroplastic insulating layer is wrapped outside the conductive wire core. The conductive wire core is made of a soft round copper wire or a tinned soft round copper wire with the purity of 99.99% or above, and the cross section of the conductive wire core is 1.0-1.5 mm < 2 >; when the cross section of the conductor wire core is 1.0 mm < 2 >, the outer diameter of the fluoroplastic insulating layer is 1.57-1.67 mm; and when the cross section of the conductor wire core is 1.5 mm < 2 >, the outer diameter of the fluoroplastic insulating layer is 1.82-1.95 mm. According to the preparation method, a plurality of conductors are twisted and pressed in a layered manner to form the conductive wire core, during layered twisting and pressing, one layer is twisted and pressed once, and finally annealing treatment is performed; fluorop