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News

March 31, 2014
Vari-Form retires historic hydroforming press
Vari-Form, a hydroformer in Troy, Mich., has retired a press that the company says was the first machine to hydroform an automotive structural part almost 24 years ago. Production of instrument panel beams on this machine for Chrysler S... Read more...

News

April 10, 2007
Vari-form acquired by Sun Capital Partners
Vari-Form, a producer of hydroformed structural components for the automotive industry, has announced that the company has been acquired from parent-company TI Automotive as a part of the acquisition of TI Automotive's Industrial Group by a key... Read more...

Article

February 7, 2006
Tube Hydroforming Design Flexibility—Part IX:
A common saying is that all good things must come to an end. I am not really sure why this must be true, and I certainly hope that there are many exceptions. However, it is true for this series of tube hydroforming design... Read more...

Article

June 14, 2005
Tube Hydroforming Design Flexibility—Part VIII: Dimensional Stability
Tubular automotive structures commonly have been made by joining several stamped parts with GMAW or spot welding, which achieves a reasonable balance of part design flexibility and hole placement. However, assembly and weld distortions... Read more...

Article

February 8, 2005
Tube Hydroforming Design Flexibility—Part VII: Holes
Cost, weight, performance, dimensional stability, and part count reduction are important considerations when determining if hydroforming a part makes economic sense. Cost-effectively produced, correctly positioned holes are essential,... Read more...

Article

September 14, 2004
Tube Hydroforming Design Flexibility—Part VI
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... Read more...

Article

March 25, 2004
Part feature developments in hydroforming products
Tube hydroforming technology continues to develop in ways that improve part utility, economy, and process robustness. Each advancement broadens the applicability of tube hydroforming by making designers aware of what is possible and of... Read more...

Article

February 26, 2004
Tube Hydroforming Design Flexibility—Part V
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.... Read more...

Article

October 23, 2003
Tube Hydroforming Design Flexibility—Part IV
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... Read more...

Article

April 24, 2003
Tube Hydroforming Design Flexibility—Part III
The last article in this series noted that variable periphery design, or cross-section expansion, often is thought to be the most important aspect of tube hydroforming design flexibility. Expansion in the hydroforming die commonly is assumed to be... Read more...

Article

October 10, 2002
Tube Hydroforming Design Flexibility—Part II
It's difficult to overemphasize the importance of cross section expansion when you're talking about successful and innovative hydroforming of steel tubing. Overemphasizing one aspect of the tube hydroforming design process can take attention... Read more...

Article

May 16, 2002
Tube Hydroforming Design Flexibility—Part I
Design flexibility is something that all automotive designers want, but too often they lack a thorough understanding of what that means—what aspects of design flexibility apply to a certain part and their effect on cost. A methodology often... Read more...

Article

October 25, 2001
Hydroforming a new front automotive structure
Figure 1 Vehicle structures have evolved over the years in response to demands for improved performance, safety, cost reduction, and changes in technology. In today's automotive environment, those first three factors often are... Read more...

Article

February 19, 2001
Pressure-sequence and high-pressure hydroforming: Knowing the processes can mean boosting profits
Closed-section structures have long been important in vehicle design. Typically, these have been assembled with several stampings, because no practical way existed to form tubes into complex shapes at required quality levels. Holes... Read more...