Water-based low-temperature integrated coating method for whole vehicle

The invention discloses a water-based low-temperature integrated coating method for a finished automobile, relates to the technical field of automobile manufacturing, and solves the problem of poor color consistency of an external plastic part and an automobile body in the existing coating technology. Comprising the steps that S1, an exterior plastic part with primer is assembled to an automobile body, and the surface of the whole automobile is wiped; s2, low-temperature integrated special water-based floating coat spraying; s3, flash drying and leveling treatment; s4, low-temperature integrated special water-based colored paint spraying; s5, pre-baking is conducted after flash drying and leveling treatment, and then cooling is conducted to 35 DEG C or below; s6, low-temperature integrated special 2K varnish is sprayed; s7, carrying out flash drying and leveling treatment; and S8, drying. The paint can be applied to large-scale assembly line coating production and manufacturing, the industrial problem that co