Passenger car differential mechanism shell vertical line casting production process

The invention discloses a passenger car differential mechanism shell vertical line casting production process, and belongs to the technical field of casting. The passenger car differential shell vertical line casting production process comprises the steps that S1, a front mold plate and a back mold plate of a casting mold are correspondingly buckled to form a cavity matched with the outer profile of a differential shell, a sand core is placed at a set position, the sand core is located in the cavity, and a casting mold is formed; a casting cavity matched with the inner and outer molded surfaces of the differential shell is formed by matching with the cavity; s2, smelting: adopting a cast iron synthesis process and utilizing a medium-frequency induction furnace; the problems that an existing differential shell process generally uses a horizontal molding line for production, and due to the fact that a horizontal production line is low in efficiency and high in material rate, the production cost is relatively hi