Elastoforming for special stamping or fluid cell parts. Superplastic forming article about superplastic forming. Highspeed blow forming hsbf is a new technology for producing. Construction of nextgeneration superplastic forming using additive. It is now recognized as a property which can be utilized in forming processes. Superplastic forming of friction stir welds in titanium. The sheets were lubricated with boron nitride before superplastic. Superplastic forming involves stretching the material at least 200% beyond its original size, although the deformation can. Superplastic forming, aero engine, titanium, applications, inspection. The interest in superplasticity has increased due to the recent observations of this phenomenon in a wide range of materials, including some materials such as nanocrystalline. Additional use of tool movement with gas pressure gives deeper parts. The coldrolled sheet had been processed for spf and had a fine, stable grain structure.
Superplastic forming is an emerging advanced technology that promises significant reductions in both procurement and life cycle costs. Superplastic forming spf, a most recent advancement in titanium sheet forming technology, exploits the. An analysis of superplastic forming in a reentrant shape. Superplastic forming how is superplastic forming abbreviated. Customer support metal forming solutions for the aerospace industry aries alliance shaping a better future 3. Evolution of hot forming and superplastic forming presses in the aerospace industry thierry favre, lead spfhf engineer, acb.
The material is first heated up to promote superplasticity. Research and application of superplastic forming titanium alloys. Applying superplastic forming principles to titanium sheet. The literature reports various methods and techniques for implementing spf of dedicated materials. The superplastic forming spf process is used in a wide range of high. Superplasticity, first observed some seventy years ago, remained a scientific curiosity until about twenty years ago. This is an example of superform usas superplastic forming of aluminum, or magnesium using the cavity forming technique. Superplastic forming is an industrial process used for creating precise and complex components out of superplastic materials. The process uses high temperature and gas pressure to form material at the desired deformation rates.
Current and likely future trends are discussed including. His research targets advancing the superplastic forming technique to effectively form. The comprehensive directory provides access to full. Chapter 1 introduction superplastic forming is the ability of certain alloys, to undergo very large elongations, prior to fracture without neck formation. Hydraulic press systems custom made to your specifications. Advantageso it can simulate a variety of other conventional metal forming techniques such as stamp or pressforming and spinforming in a.
Sheet stretch forming sheet stretch forming is a fast, economical and accurate way to form a large panel from a metal sheet. Superplastic forming spf is a near netshape forming process which offers many advantages over conventional. Superplastic manufacturers, service companies and distributors are listed in this trusted and comprehensive vertical portal. The joining of light alloys, plastics and composites with each other or as hybrid. Superplastic forming spf is a method especially useful for obtaining complex and precise lightweight metal components, which is achieved at a particular range of strain rates and temperature. Plastic is a material consisting of any of a wide range of synthetic or semisynthetic organic that are malleable. Superplastic forming an overview sciencedirect topics. Superplastic forming process of sheet metal techminy. West coast accudyne design, development and manufacturing of specialized press systems for the aerospace, defense, consumer. Accudyne custom hydraulic press systems hydraulic presses. Thermoforming, vacuum forming and pressure forming are considered thermoforming processes. Thermoforming is the forming of heated plastic on a mold to create a desired shape. Superplastic forming process general motors corporation.
Superplastic forming and diffusion bonding of titanium alloys. Superform usa superplastic forming bubble forming technique. Superform usa superplastic forming cavity forming technique. Titanium and titanium alloys superplastic forming of. Smith february 1995 presented at the annual meeting of the minerals, materials, and.
Pdf an integrated approach to the superplastic forming of. Superplasticity is the ability of material to undergo extreme elongation allowing. Superplastic forming is a process dedicated for sheet material allowing elongation of several hundred percent. The process offers a range of important benefits, from both the design and production aspects. They are not necessarily new but can be regarded as emerging technologies with respect to their application to aluminum alloys. Pdf the mechanics of superplastic forming how to incorporate. Superplasticity article about superplasticity by the. One of its advantages is the capacity to produce complex parts in a single operation with a great surface finish, what implies in weight savings as. This is an example of superform usas superplastic forming of aluminum, or magnesium using the bubble forming technique. To begin with there is the ability to form components with double curvature and smooth contours from single sheet in one operation, with exceptional dimensional accuracy and surface finish, and none of the spring back associated with cold forming techniques. Fem simulation, tooling and spf forming based on its experience in tools manufacturing and super plastic forming computation spf, aurock.
Since the mid1970s, the superplastic characteristics associated with a limited range of structurally significant aluminium, titanium and nickel based alloys have been exploited in the manufacture of. Forming hf superplastic forming spf hot forming is a forming technique with a short cycle time using mediumhigh temperature to increase the formability of the material being formed. Superplastic form titanium sheet metal using conventional welding techniques such as tungsten inert gas tig, resistance welding and laser fusion welding. Most of the plastic products that we use every day were made using at least one of these top 7 forming techniques. Finite element simulation of highspeed blow forming of an. Titanium superplastic forming a fully integrated solution. Simple schematic of data acquisition and control system is presented in figure 6. Combining spf and db in a single step makes the process very attractive for the. Industrial knowhow has historically been the tool of choice to define the superplastic forming process but, by using the most uptodate material testing, finite element modelling and process methods, the.
Superplastic forming is a specialist process used for deforming metal sheet to extremely large plastic strains to produce thinwalled components to the nearnet shape. The phenomenon of cavitation was recognised at an early stage in the development of superplastic alloys stowell, 1982 and forming techniques and numerous investigations have been reported. Spf technique, when particularly merged with the unique class of lwm. We use spf to form titanium, nickel or aluminum alloy parts at high temperature with either. Stretching of the sheet during superplastic forming is much higher than with rolling and sheet forming. The superplastic process spf is a forming technique useful to manufacture structural components with a. Superplastic forming is already being used industrially. In the extreme, the volume of cavities can reach about 10% when the material is close to failure. Processes and equipment for superplastic forming of metals. The aim is to propose the set up control of superplastic forming of aluminum alloys in an autoclave and a new strategy for rheological characterization of materials by bulge test. The interest in superplasticity has increased due to the recent observations of this phenomenon in a wide range of materials, including some materials such as nanocrystalline materials 410, ceramics 411,412, metal matrix composites 4, and intermetallics 414 that are di. In the case of aluminium alloys, various alloys 2004, 5083 or 7475 have been formed with this. Superplastic forming is a specialized metalworking process that allows sheets of metal alloys such as aluminum to be stretched to lengths over ten times that of conventional alloys without.
Superplastic forming of advanced metallic materials 1st. Applying superplastic forming principles to titanium sheet metal forming problems p. Superplastic forming spf of light alloys has been successfully used in aeronautics since more than 30 years. Super plastic forming spf superplastic forming is a forming technique using material heated to the super plastic state to increase its formability allowing high elongation ratio for forming complex parts and deep shapes. As the limitations of sheet metal fabrication are most often determined by the tensile ductility, superplasticity in sheet metals offers advantages for the forming of complex shapes easily as a. Superplastic forming is a process by which extremely complex parts are produced from a single sheet of superplastic material. Superplastic forming 40 years and still growing springerlink. An integrated approach to the superplastic forming of. Superplastic forming scientific publications argonne national. The result is less waste, lower weight and manufacturing costs, high precision and lack of residual stress associated with welding which makes components ideal for aerospace, automotive and other. The superplastic forming technology of ti6al4v titanium alloy bellows p.
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