February 7, 2006
In this article Gary Morphy reviews high-pressure and pressure sequence hydroforming and discusses factors to consider when deciding which process is best for a particular application. The decision should be based in part on anticipating future needs.
June 14, 2005
Whether they are producing automobiles or hydroforming press parts, designers, manufacturers, and assembly personnel are very concerned about dimensional stability. Surfaces and holes must be located in a specified range and smaller is better. Concern escalates as the drive to improve quality and reduce build tolerances and problems increases.
February 8, 2005
When making holes in hydroformed parts, fabricators have many choices—milling, drilling, laser cutting, plasma cutting, flow drilling, post-piercing, and hydropiercing.
September 14, 2004
Tube hydroforming reshapes a tube from a normally round cross section to a desired shape. The final shape, usually rectangular, develops along the part length. The cross-sectional periphery may be consistent throughout the part and equal to the original tube, or it can be expanded in localized...
March 25, 2004
Tube hydroforming technology continues to develop in ways that improve part utility, economy, or process robustness. Auto parts that have recently been produced by hydroforming include roof rails, radiator enclosures, a front-end structural module, and roof rails.
March 25, 2004
Commentary from the people interviewed at the International Conference on Hydroforming (Oct. 2003) indicate that trends include an increasing interest in forming aluminum and other lightweight materials; more use of tailored tubes; and that sheet hydroforming is expected to grow faster than tube hydroforming.
February 26, 2004
Combined with the information in Part III of this series that focused on cross-section expansion before hydroforming, this article discusses the most common options used in preparing tube for hydroforming and achieving the designer-intended part. Properly executing bending and cross-section...
January 13, 2004
Hydroforming was one of the fastest-growing metal forming technologies during the 1990s. Most of U.S. industry cooled down during and after the recession of 2001, but things have been heating up lately, and the world of hydroforming is no exception. The North American Hydroforming Conference and Exhibition (Sept. 29 – Oct. 1 in Dayton, Ohio), which was sponsored by the Tube & Pipe Association, International® (TPA), and the Society of Manufacturing Engineers (SME), showcased new techniques, equipment, and applications that are moving the industry forward.
October 23, 2003
Material selection is a very important aspect of design flexibility when striving to fulfill part functionality requirements. Choosing the correct material is fundamental to making the part effectively and efficiently. The way a material is formed and the conditions it needs to withstand for...
October 9, 2003
The most common way to establish tube length after hydroforming is by cutting or shearing the tube to a specified dimension; however, cutting out this step can reduce scrap. A new method designed to eliminate this step combines forming the end of a tube to resemble its final form with using a hydroform die to correct end position variations off the bender. While this approach eliminates the final shear trim operation, it also presents new challenges.
October 9, 2003
Hydroforming is one of the most important fields in production manufacturing. In recent years many single presses, groups of presses, and entire production plants for internal high-pressure (IHP) hydroforming of tubes and extrusions have been installed, especially in the Americas and in Europe. The driving force behind this development has been the efficient production of automotive parts.