Manufacturers of dished heads for tanks and pressure vessels require machines able to ensure high performance and high productivity. The first step for making dished ends is to cut the plate to obtain the circular blank; an operation normally done with a circular shear for thicknesses below 10mm or with normal cutting tables when thicknesses are above 10mm. The second step is the dishing process with the PPM dishing press that is equipped with the specific dies, which can form the crowning radius with multiple hits. The pressing is a repetitive process run in automatic mode by the CNC that control the press and the manipulator that handles the dished ends and distributes the hits. When the plate is dished with the correct crowning radius, the dished head is completed by forming the edge through the flanging machine. The flanging machine is, in fact, forming the knuckle radius by spinning the material.
It is major Part of Pressure Vessel which closes ends of the cylindrical section or shell of the pressure vessel is called as Pressure Vessels Heads. There are various common names are used for Pressure Vessels Heads which are Dish Ends, Formed Heads, End Closure, End Caps, Vessel Ends, Vessel Caps etc. but most Common name is Dish ends.
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