Why is metal spinning？
Metal spinning is used for several reasons:
1. It can produce circular, axially symmetric parts that are difficult to make using other processes. Metal spinning offers a lot of flexibility in producing curved, contoured shapes that would require expensive dies or patterns with other techniques.
2. It is a quick and cost effective process. Metal spinning does not require expensive tooling and set up, and it produces less wasted material. Finishing requirements are also minimal compared to other metal forming processes. This can significantly reduce the cost and lead time.
3. It provides good dimensional accuracy and control. Experienced metal spinners can control the process to produce parts within tight tolerances. Smooth curves and contours can be achieved.
4. It works best for small to medium quantities. While not ideal for high volume mass production, metal spinning is suitable for small lots where the lower costs and tooling requirements are advantages. For higher volumes, other processes may be more suitable.
5. It can be used for a variety of metals. Most commonly spun metals are aluminum, brass, copper and mild steel - essentially any ductile metal. Exotic alloys can also be spun for certain applications.
6. It is suitable for decorative and functional parts. Metal spinning is used for making decorative bowls, pots and sculptures as well as industrial parts like rocket motor casings, gas cylinders, bells, horns, etc.
7. It requires skilled craftsmen to operate. While metal spinning does not require expensive tooling, it does require technicians with a lot of experience to get good results and control the process. This can limit suitability for some companies and applications.
8. It can be integrated with other processes. Metal spinning is often used with other techniques like welding, machining, grinding, buffing, plating, etc. to obtain the final product. This integration offers a lot of flexibility.
In summary, the main reasons for using metal spinning are its ability to produce symmetrical curved shapes, low cost and tooling requirements, good dimensional control, suitability for small to medium lots, and adaptability to different metals. When combined with other processes, metal spinning can be used to economically manufacture both decorative and industrial parts.
