Marine propeller refers to the device that converts the rotating power of the engine into propulsion force by rotating the blades in the water. Two or more blades can be connected to the hub, and the backward side of the blade is a propeller with a helical surface or similar to the helical surface. Propeller is an efficient propulsion device. A pair of reasonably designed propellers can effectively improve the ship's speed and achieve better energy-saving effect. At present, the propeller is generally an integral structure, which is made by welding the blade and the hub together or by milling.
Process: cutting, welding, drilling, bending, turning, etc.