Скачать или смотреть Antique Copper Ball - Spin Forming, Metal Spinning, Shear Forming, ...

A 50 year old copper float ball that was "spun" into shape, a process today most commonly used in high tech stuff like rocket nose cones! Oh, and some things like copper glasses, vases, etc.

It is known as metal spinning, spin forming, spinning, metal turning also related to shear forming aka shear spinning.

LINKS to video:
   • Metal Spinning,  
   • Metal Spinning (Ø10 - Ø3000 and up to 12 m...  
   • Metal Spinning by SOLUMAX - 48" Aluminum D...  


From Wikipedia:
Metal spinning, also known as spin forming or spinning or metal turning most commonly, is a metalworking process by which a disc or tube of metal is rotated at high speed and formed into an axially symmetric part.[1] Spinning can be performed by hand or by a CNC lathe.

Metal spinning does not involve removal of material, as in conventional wood or metal turning, but forming (moulding) of sheet material over an existing shape.

Metal spinning ranges from an artisan's specialty to the most advantageous way to form round metal parts for commercial applications. Artisans use the process to produce architectural detail, specialty lighting, decorative household goods and urns. Commercial applications include rocket nose cones, cookware, gas cylinders, brass instrument bells, and public waste receptacles. Virtually any ductile metal may be formed, from aluminum or stainless steel, to high-strength, high-temperature alloys including INX, Inconel, Grade 50 / Corten, and Hastelloy.[2] The diameter and depth of formed parts are limited only by the size of the equipment available.


Shear forming, also referred as shear spinning, is similar to metal spinning. In shear spinning the area of the final piece is approximately equal to that of the flat sheet metal blank. The wall thickness is maintained by controlling the gap between the roller and the mandrel. In shear forming a reduction of the wall thickness occurs.

Before the 1950s, spinning was performed on a simple turning lathe. When new technologies were introduced to the field of metal spinning and powered dedicated spinning machines were available, shear forming started its development in Sweden.




I, the copyright holder of this work, hereby release it into the public domain. This applies worldwide. Photo Author: Samuel Mosquea