Shorter Lead Times with Metal Spinning
Metal spinning has been described as an art in which a rotating disc, on a lathe, is formed over a mandrel with hand tools and rollers. Typically form parts can be spun in sizes from a fraction of an inch up to over nine feet in diameter. Metal spinnings are manufactured from the common alloys like aluminum, steel, copper, brass and stainless steel, as well as more exotic alloys such as Monel, Kovar, Hastelloy, mumetal, tantalum and molybdenum.
Metal Spinning has an advantage over other forms of manufacturing since the procedure is typically a single point cold forming process: the tensile strength of the raw material is increased, allowing thinner materials to be used. The necessary tooling required to manufacture parts is less expensive than the cost of tooling needed to manufacture parts by means of hydroforming, deep drawing or stamping. This in turn allows shorter lead times for new parts and design changes can be made at a minimum of expense due to the inexpensive nature of the tooling. This results in metal spinning being a preferred process for prototypes and pre-production items, where typically up to 50% of prototype parts are altered after the first run.
When performed by a full-service job shop, metal spinning can be combined with other processes to produce sheet-metal parts more cost-efficiently. Typical processes combined with metal spinning include: fabrication, welding, machining, punching, riveting, spotwelding stud and nut inserting. Combining processes also allows a wide variety of shapes and configurations to be manufactured, such as bowls, cans, cases, covers, enclosures, hoppers, funnels, hollow balls, hemispheres, boxes, cabinets, cones, guards, panels, housings, pans, venturies, thin wall shperes, reflectors, rings, static shields, tanks, toroids, coronas, perforated stainless steel baskets, domes and diffusers.
Hastelloy is a registered trademark of Cabot Corporation
Monel is a registered trademark of Inco Alloys International, Inc.
Kovar is a registered trademark of Carpenter Technology
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