Category Archive: Uncategorized

Minimizing Secondary Finishing Operations With Hydroforming

hydroform13 large resized 600When considering the numerous options available for working with metal, many companies choose the beneficial and cost effective process hydroforming.  Originally developed around 1950, hydroforming is ideal for shaping many types of ductile metals, including brass, aluminum, stainless and low alloy steels.  It holds a number of benefits when compared to similar work processes, especially when considering cost, precision, and efficient operation.  One area where hydroforming especially excels is its role in minimizing secondary finishing operations.

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Hand Spinning vs. CNC Spinning: Two Sides of the Coin

describe the imageMetal Spinning (or spin forming) is a process where a tube or a disc of metal is rotated at high speed and transformed into an axially symmetrical object. Metal spinning is usually performed on a vertical or horizontal lathe using CNC controls or hand processing. So, by its very nature, metal spinning is an example of a technology that has spanned a timeframe stretching from the days of hand-tooled craftwork to the modern computer era. How do the two techniques compare, and how do they complement one another? Good questions. Let’s take a look.

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Safety Under Pressure: Pressure Vessel Shape Matters

pressure vesselThe American Society of Mechanical Engineers (ASME) first published the Boiler & Pressure Code (BPVC) in 1915 in response to the need for safety measures in the production and use of boilers and pressure vessels. In the early 1900s, boilers and pressure vessels – closed containers designed to hold gases or liquids at a pressure substantially different from the ambient pressure – were new innovations. These innovations promoted and advanced industrial activity in the U.S., specifically for companies that utilized machines for long-range transportation and heavy lifting.

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Metal Spinning = Cost Effective Metal Forming

Metal Spinning has a long history that spans back to ancient Egypt and has progressed through the years to today’s more advanced methods of forming metal via spinning it.  Today, the modern metal spinning process takes place on rigid lathes that incorporate high velocity spindles that shape the metal.  These spindles are operated either manually or via advanced computer controls.

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The Case for Metal Spinning and Metal Hydroforming

Metal Spinning is a process by which a disc or tube of ductile metal is rotated on a spindle and formed into an axially symmetric part. Through the use of heavy forces and high speeds, the metal will deform and “flow” to form the desired shape around a mandrel, a kind of mold that is shaped to the interior geometry of the planned part. This process allows metal to deform evenly, without any wrinkling or warping, to create a smooth, even, and seamless surface. The processes’ heavy forces also realign and strengthen the grain structure, significantly increasing the tensile properties and fatigue resistance of the base material.

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Metal Spinning and Metal Stamping: Partners in Prototypes

The options available in metal machining can seem to be different things at different times. Sometimes, the vast range of methods and processes can seem overwhelming and more trouble than they’re worth. More often, though, with the right knowledge and willingness to research, great solutions can come from unexpected places. Such is the case with the relationship between metal stamping and metal spinning. At first glance, they seem only tangentially related, each with their own benefits and qualities, but generally exclusive of each other. A closer look, though, shows that metal spinning can provide great efficiencies in cost and time to metal stamping shops and their customers.

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