INNOVATIVE METAL FORMING
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METAL SPINNING GENERAL INFORMATION

In metal spinning, the blank diameter is generally larger than the diameter of the finished component, and its size is determined from the surface area of the finished part. Pressure on the spinning tool or roller may be exerted by hand, air or hydraulics. The availability of hydraulic spinning machines and automatic template-controlled devices has made metal spinning, normally associated with prototype and limited-production runs, competitive in the mass-production of many shapes. The use of precision templates and automatic machinery has also insured the repeatability of each part.

Because of the rotation, parts usually are symmetrical and circular in cross-section in the metal spinning process. However, many spun parts are cut into segments or welded into intricate assemblies that bear little resemblance to the original spun components.

Metal spinning, once usable only on the most malleable of metals, can now be applied to stainless steels or the most exotic workable alloys, such as Titanium, Inconnel, or Hastelloy. Size restrictions of a few years ago are almost non-existent. Parts can be spun up to 26 feet in diameter and thicknesses of up to 3 inches for aluminum and 1 1/2 inches in ferrous alloys.

History of Metal Spinning
Description
General
Advantages of Metal Spinning
Tooling
Spinning/Deep Drawing
Design Suggestions

The text in this primer is printed with permission of the PMA.

metal spinning: spun metal parts



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