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Spinning a bell flare sheet metal.
They are available in metric thread sizes m5 m6 and 8.
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Spinning can be performed by hand or by a cnc lathe.
Permanent installation is accomplished by inserting the nut into a properly sized pre punched and embossed mounting hole in a metal sheet and then applying sufficient squeezing force to flare the fastener s shank.
Metal spinning does not involve removal of material as in conventional wood or metal turning but forming moulding of sheet.
If the oxide is not removed it will be pressed into the surface of the metal being spun.
The sheet metal is then slowly forced with hand held tools and rollers to form over the mandrel and it slowly takes the shape of the desired part.
After annealing the metal it will be coated with a black oxide.
Fast extreme big metal spinning process working amazing cnc metal spinning machine.
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.