
Tungsten alloy for self-winding watch has excellent properties such as high strength, high hardness, wear resistance, and corrosion resistance. It is the best raw materials for the manufacture of watches. The rudder is an important part of automatic mechanical watches. The automatic mechanical watch is an improvement of the manual mechanical watch. A swaying rudder is added to the watch. When worn, the oscillating weight in the watch is rotated by the wrist to achieve the effect of winding. The…