For example, Copen, the body painting outside the door only needs electrodeposition. For electrodeposition coating, instead of using the conveyor belt to make the vehicle move slowly, the batch process of impregnating the vehicle one by one for about 20 minutes can be used to shorten the production line.
Previous electrodeposition coatings, considering that the above is to be painted, mostly using gray, while Copen's electrodeposition coatings changed to black. Where not covered by the outer panel, the electrodeposited coating surface will be exposed. When the coating surface is uniformly black, the trouble of secondary coating according to the outer panel color can be eliminated.
Furthermore, if the door can be manufactured with resin, the painting line on the automobile assembly line can be omitted. As for the exterior panel, it can be accomplished by installing the panel with painting number in other processes with screw and so on, just like assembling plastic model, it can be accomplished by assembling production line.
The initiative also contains a challenge to this new mode of production. Overseas, BMW "i3" uses aluminium alloy skeleton and carbon fiber reinforced resin matrix composites (CFRP) body to promote the resinization of the body. Resin body is assembled by gluing, eliminating welding operations. In addition, Gordon Murray Design has also put forward the "istream" production mode, which combines resin exterior panels on the steel tube skeleton, thus eliminating the painting production line.
At present, in the power transmission system, the electric technology of hybrid electric vehicles and electric vehicles has attracted much attention; in the safety technology, automatic braking and automatic driving have attracted much attention. Future automobiles may also put forward innovative requirements in production. In this sense, Dafa's attempt to promote production reform through the use of a large number of resin body can be called the prelude of the production line transformation, and its trend deserves attention.
