Experts in Metal Spinning         Deep Drawing             and Hydroforming

Innovative Metalforming Solutions           Hi-Craft's primary area of expertise is the highly specialized process of Metal Spinning. In metal spinning, a flat metal disc is gradually forced by a roller onto a rotating mandrel, taking the shape of the mandrel. This combination of rotation and force shapes the blank into a cone, hemisphere, tube or other circular or cylindrical shape. Metal spinning remains extremely cost-effective today because it requires inexpensive tooling and can be applied to a wide variety of metals. CNC spin lathes are typically used for spinning large quantities, while, for smaller quantities, hand spinning remains the method of choice.         Hi-Craft Metal Products also boasts a wide range of Deep Drawing presses. Deep Drawing is a process for forming sheet metal between an edge-opposing punch and a die (draw ring) to produce a cup, cone, box or shell-shaped part. Deep drawing is often more cost-effective than spinning when the run quantity is very large and a high production rate is required.         HYDROFORMING, another area of specialty at Hi-Craft Metal Products, is another form of deep drawing used to form more complex shapes. In hydroforming, a metal blank is first placed on a ring. A steel punch then rises through the ring, forcing the sheet metal up into a rubber diaphragm backed by a pressure dome filled with hydraulic fluid. The wear pad exerts uniform pressure over the outer surface of the part, forming it tightly against the tool.