1, the mold clamping tongue and groove with upper and lower plate cylinder dislocation practices Matchboard completely flat. Slurry does not leak, easy to clean mold; 2, self-developed mold cylinder 6 meters forming presses, tube seam by a 2 m extension to six meters (the length of the press in general only 2 meters), to minimize the wELDS improve the strength of the external appearance of the mold and products; 3, welding process using carbon dioxide gas shielded arc welding, so that mold the appearance of simple, full seam neat, will introduce the "robot" welding project; 4, long lathe , 15 meters in length or less the entire car mold processing, greatly improving the running wheel flange concentricity. (Flange butt after a good car polish processing, mold joints smooth) Manufacturers generally segmented car after docking, the level of error prone mouth.