The invention discloses a
manufacturing technology of a hollow outer gear of an electric forklift driving
flange. The
manufacturing technology includes the following steps that material
cut-off is performed, skinning is performed, shot blasting is performed,
coating is performed, upsetting is performed, a center hole is extruded, spheroidizing annealing is performed, blank making is performed, shot blasting is performed,
phosphorus saponification treatment is performed, cold
extrusion is performed on outer teeth, turning is performed,
carburizing and
quenching are performed, surface
sand blasting is performed, and cleaning and oiling are performed. The hollow outer gear produced through the technology is stable in quality, and the accumulation error between tooth profiles is small. The finished product rate is high, production efficiency is improved, the production period is short, the method that after hot
forging, a
machine tool is mainly adopted for
machining is replaced, the operation quantity of
machine tool
machining is reduced, the requirement for precision can be met, the manufacturing cost is lowered, and the manufacturing period is shortened.