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Rolled Ring Forging
Rolled ring forging has evolved from an art into a strictly controlled engineering process. Seamless rolled ring forgings are produced on a variety of equipment. All give the same product--a seamless section with circumferential grain orientation. These rings generally have tangential strength and ductility, and often are less expensive to manufacture than similar closed die forgings. In sum, rolled ring forging offers homogeneous circumferential grain flow, ease of manufacture, and versatility in material, size, mass, and geometry.
How does rolled ring forging work?When using the rolled ring forging process, a preform is heated to forging temperature and placed over the idler (internal) roll of the rolling machine. Pressure is applied to the wall by the main (external) roll as the ring rotates. The cross-sectional area is reduced as the inner and outer diameters are expanded. Equipment can be fully automated from billet heating through post-forge handling. Advanced rolled ring forging equipment can roll contours in both the inner and outer diameter of the ring, allowing for excellent weight reductions, material savings, and reduced machining cost.
There is an infinite variety of sizes into which rings can be rolled, ranging from rollerbearing sleeves to rings of 25 ft in diameter with face heights of more than 80 in. Various profiles may be rolled by suitably shaping the drive and idling rolls. For more information about rolled ring forgings, please contact us today.
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Iron ore demand back on solid ground
Monday, January 30, 2012
Iron ore commodity prices are much more stable at the present time than they have been since melting down for much of 2011.
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