scispace - formally typeset
Search or ask a question
Topic

Hydroforming

About: Hydroforming is a research topic. Over the lifetime, 2796 publications have been published within this topic receiving 26293 citations. The topic is also known as: Bulge forming.


Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, an experimental study of tubular T-joints made of copper manufactured by means of the THF process is described, where the tube-die interface friction condition effects on the final part.
Abstract: THF process is a forming technique that consists of tube deformation by means of hydraulic pressure and punches which guarantee the tube ends feeding and sealing. In the last years, this technique found a large and rapid diffusion thanks to its many advantages with respect to conventional processes: parts weight reduction, tighter dimensional tolerances, lower costs or fewer secondary assembly operations. Besides, many lacks in the process knowledge still represent an obstacle and they are usually bypassed by trial and error methods. Therefore, lot of studies were conducted to better understand the influence of the process parameters, such as pressure path, punch stroke or material behaviour. In this paper, an experimental study of tubular T-joints made of copper manufactured by means of THF process is described. The aim of this work is to analyze the tube-die interface friction condition effects on the final part. In fact, material flow during the process is greatly influenced by the friction conditions between tube and die especially due to the high pressure acting inside the tube. Different lubrication types were considered: dry, oil, Teflon, Teflon with oil, Teflon spray and Graphitic oil. Two different experimental campaigns were performed in this investigation. The first one was carried out in order to estimate the lubricant friction coefficients using a Pin on Disk tribometer. The second one was performed to study the effects of the lubrication on the process and the tests were conducted hydroforming T-joints under the different lubrication conditions considered. The collected data allowed to identify how the different lubrication conditions affect the final workpiece geometry. Moreover, a critical aspect of the process related to the tube wrinkling was identified and a solution was proposed.

12 citations

Journal ArticleDOI
01 Mar 2010
TL;DR: In this article, a new sheet hydroforming technique is proposed that is a combination of the standard and the hydromechanical sheet hydforming processes, which is used in forming a cylindrical cup and a complex industrial part.
Abstract: Sheet hydroforming techniques are widely used in industries for the production of different components with specific characteristics. Despite the advantages of the conventional sheet hydroforming techniques, they have their own limitations. In this paper, to increase the application and to overcome the limitations of conventional deep drawing, a new sheet hydroforming technique is proposed that is a combination of the standard and the hydromechanical sheet hydroforming processes. The proposed method has the advantages of conventional processes but eliminates their limitations. This technique is used in forming a cylindrical cup and a complex industrial part. After applying the appropriate pressure path, the products are formed successfully in one stage without any defects. It is also shown that the required forming pressure in the proposed process is low compared with other sheet hydroforming processes. It is demonstrated that because of the low internal pressure required in the present method, pr...

12 citations

Book
08 Oct 2014
TL;DR: In this paper, Artificial Neural Network for Sheet Metal Forming and Hybrid Intelligent System for Stamping Process are presented for sheet metal forming process, and they have been applied in metal fabrication process.
Abstract: Fundamental of Metalworking.- Sheet Deformation Processes.- Expert Systems And Artificial Intelligence.- Analysis of the Stamping Design Process.- Artificial Neural Network for Sheet Metal Forming.- Hybrid Intelligent System for Stamping Process.- Advances in Metal Forming Processes.- Fundamentals of Hydroforming.- Hydroforming for Enhanced Formability.- Fundamentals of Tailor Welded Blanks.

12 citations

Patent
04 Jun 2003
TL;DR: In this article, a method for preparing a golf club shaft, set of shafts, or golf clubs having shafts which have been produced by a process that includes a hydroforming step is presented.
Abstract: Method for preparing a golf club shaft, set of shafts, or golf clubs having shafts which have been produced by a process that includes a hydroforming step. By utilizing a hydroforming prosses step, a metal or metal matrix composite golf club shaft can be formed into a variety of configurations or shapes heretofore not possible and can include hydroformed ornamental design features.

12 citations


Network Information
Related Topics (5)
Machining
121.3K papers, 1M citations
85% related
Welding
206.5K papers, 1.1M citations
81% related
Deformation (engineering)
41.5K papers, 899.7K citations
80% related
Alloy
171.8K papers, 1.7M citations
80% related
Microstructure
148.6K papers, 2.2M citations
79% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202330
202298
202158
202087
201981
201895