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Rotary Tube Piercing
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-Lines for processing sheet metal coil and plate
metal into level strip of required width and length,
(unrolling, pulling, leveling, cutting, etc.)
-Machines for sheet metal processing and part
manufacture, cutting, bending, punching, etc.,
(manual, pneumatic, electric, hydraulic)
-Presses for deep drawing, forging, extrusion and
other processes, we can also provide die/molds.
-Pre-heat systems for hot metal forming.
-Metal Rolling Mills
-Melting furnaces for metal casting.
-Tube/Pipe manufacturing equipment of all types: joined sheet metal
tube/pipe producing machines, formed seamless tube/pipe producing machines,
expansion/reduction drawing machines for pipe/tube.
-Induction heat tube/pipe bending machines (2"-30"DIA)
-CNC/Manual Machining equipment of all types,(milling machines,
lathes, machining centers, EDM wire-cutting/die-sinking machines).
WHEREVER YOU ARE IN YOUR MANUFACTURING
PROCESS WE CAN HELP DETERMINE HOW TO PROCEED.
Rotary tube piercing, also called roll piercing, or the mannesmann process,
is a hot forming process that can manufacture long lengths of seamless tube
and pipe. Compressive forces applied to a cylinder will create internal stresses
at the center. These stresses result in crack propagation.
Rotary tube piercing manufacture relies on this physical principle. A round
stock is center drilled at its end and compressive forces are applied by the use of
two rolls. A mandrel is used to shape and size the internal cavity formed at the
center of the round stock. The rolls rotate in the same direction and are oriented
at an axis that is at a slightly skewed angle to the axis of the part. This causes the
stock to be pulled through the rolls and forces it against the mandrel.