Spinning A Bell Flare Sheet Metal

After annealing the metal it will be coated with a black oxide.

Spinning a bell flare sheet metal.

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. They are available in metric thread sizes m5 m6 and 8. This must be removed before spinning can resume. The sheet metal spinning process begins when the sheet is cut to a certain size and attached to a lathe mandrel which spins at very high rpm.

Fast extreme big metal spinning process working amazing cnc metal spinning machine. Pem sfn steel spinning flare nuts install in steel stainless steel or aluminum sheets of any hardness and as thin as 1mm. Spinning can be performed by hand or by a cnc lathe. 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.

If the oxide is not removed it will be pressed into the surface of the metal being spun. 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.