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The blank of the precision gear is determined by the material, structure, size, use condition and production batch of the gear.Commonly used gear materials and coarse gear materials are carbon steel, such as 15 steel, 45 steel; alloy...
In ancient times, wooden, copper and cast iron gears were all handmade.At the end of the 17th century, precision gear machining can be cut by forming methods, but cast iron technology is still the main...