Expanding Machines, Shrinking Machines & Combination Expander-Shrinkers.
Expanders and Shrinkers are different but closely related machines used to form and size metal parts by the application of carefully controlled radially acting forces. In Expanders the forces act radially outward from the machine centerline. In Shrinkers the forces act inward. The Expanding and Shrinking operations can be combined in a single machine when more complex shapes are to be handled and closer tolerances are required. Variations and modifications of the Expand and Shrink methods are employed to emboss, flange, offset, pierce and extrude, and otherwise form the walls of cylindrical metal parts.
Metal Forming Machines /
Expanders / Shrinkers
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