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More from Taylan Altan, Ph.D.
- From The Fabricator
R&D Update: Servo press forming applications - Part III
- By Taylan Altan, Ph.D.
- May 8, 2007
- Bending and Forming
- Article
This column discusses several applications of servomotor-driven mechanical presses for forming at room temperature and at elevated temperatures.
- From The Fabricator
R&D Update: Servo press forming applications - Part II
- By Taylan Altan, Ph.D.
- Apr 10, 2007
- Bending and Forming
- Article
Servo presses are classified into two main types based on their drive systems: direct drives with high-torque, low-speed servomotors, or low-torque, high- speed servomotors.
- From The Fabricator
R&D Update: Servo press forming applications - Part I
- By Taylan Altan, Ph.D.
- Mar 13, 2007
- Bending and Forming
- Article
A servomotor gives a press slide motion flexibility in terms of accurate speed, motion, and position control. This flexibility produces infinite slide motion variations that may improve part quality and operations such as painting and assembly during one press stroke.
- From The Fabricator
R&D Update: Hot-stamping boron-alloyed steels for automotive parts - Part I
- By Taylan Altan, Ph.D.
- Feb 13, 2007
- Bending and Forming
- Article
Hot-stamped parts are being used increasingly in cars in Europe and North America. Ultrahigh-strength steels, like boron alloys, which meet automotive safety and crash requirements, are difficut to form with cold stamping, so hot stamping with die quenching has been applied.
- From The Fabricator
R&D Update: Hot-stamping boron-alloyed steels for automotive parts - Part III
- By Taylan Altan, Ph.D.
- Feb 13, 2007
- Bending and Forming
- Article
To accurately model the hot-stamping process, FE simulation needs to account for the mechanical, thermal, and microstructural changes in the workpiece.
- From The Fabricator
R&D Update: Hot-stamping boron-alloyed steels for automotive parts - Part II
- By Taylan Altan, Ph.D.
- Jan 18, 2007
- Bending and Forming
- Article
Compared with cold-formed parts, hot-stamped parts provide better formability at high temperatures and exhibit no springback on the final part.
- From The Fabricator
R&D Update: Multipoint-control die cushion systems for stamping complex parts - Part II
- By Taylan Altan, Ph.D.
- Nov 7, 2006
- Bending and Forming
- Article
In deep drawing of complex, asymmetrical parts such as stainless steel kitchen sinks, blank holder force (BHF) needs to be controlled locally to regulate the flow of the sheet metal. An MPC blank holder system allows this control by placing individually programmable cushion pins around the blank perimeter, with an appropriate BHF selected at each pin location.
Warm forming magnesium, aluminum tubes
- By David Guza, Jon Ander Esnaloa, Taylan Altan, Ph.D., and Yingyot Aue-u-lan
- Oct 3, 2006
- Hydroforming
- Article
Research shows that in forming lightweight materials such as aluminum and magnesium alloys, the formability increases as the temperature increases, especially in the range from 200 degrees C to 300 degrees C (392 degrees F to 572 degrees F).1-5 The Center for Precision Forming (CPF, formerly...
- From The Fabricator
Warm forming of stainless steels - Part II
- By Ajay Yadav, Giovanni Spampinato, and Taylan Altan, Ph.D.
- Aug 8, 2006
- Metals/Materials
- Article
The ERC/NSM conducted experiments using round cup tooling to determine the influence of temperature on the limiting draw ratio – the largest draw ratio of the blank-to-cup diameter that can be drawn successfully.
- From The Fabricator
Warm forming of stainless steels - Part I
- By Ajay Yadav, Giovanni Spampinato, and Taylan Altan, Ph.D.
- Jul 11, 2006
- Metals/Materials
- Article
To prevent martensitic transformation in stainless steel during drawing operations, warm forming has been explored. In experiments, warm forming eliminated intermediate annealing operations and substantially increased limiting draw ratio values.
- From The Fabricator
R&D Update: Evaluating dry film lubricants for automotive applications Part III
- By Taylan Altan, Ph.D.
- Nov 8, 2005
- Bending and Forming
- Article
In recent studies, dry-film lubricants have been shown to give better lubrication conditions when compared to oil-based liquid lubricants. This factor, as well as savings in the amount of lubricant used, has helped increase the use of dry-film lubricants in the automotive industry for forming of aluminum and high-strength steel stamped parts
- From The Fabricator
R&D Update: Air-assisted forming of aluminum alloy for automotive components
- By Taylan Altan, Ph.D.
- Aug 9, 2005
- Bending and Forming
- Article
Reducing weight while maintaining or improving functional requirements is one of the major goals of automotive design and manufacturing, as it decreases fuel consumption and improves structural design. As a result of these considerations, the use of aluminum alloys in car manufacturing continues to increase, not only in body panels but also in structural, power train, and suspension components.
Hydroforming tapered engineered tubes
- By Chuck Smith, Taylan Altan, Ph.D., Prashant Soman, Serhat Kaya, and Yingyot Aue-u-lan
- Jun 8, 2004
- Hydroforming
- Article
Hydroforming often results in localized thinning. Using engineered tubes—tubes that have a thicker wall where the tube is most prone to thinning—can result in a stronger finished component.
Using finite element analysis to roll-form tubes
- By Karan Shah and Taylan Altan, Ph.D.
- Oct 9, 2003
- Tube and Pipe Fabrication
- Article
Roll forming is a common method for producing steel tubes. It is a continuous process in which a strip is guided through several sets of rolls that form the strip into the desired shape. After the final shape is achieved, tube edges are welded together to form a closed section. After the welding operation, the tube is sized through another set of rolls to obtain the required diameter.
- From The Fabricator
R&D Update: Predicting springback in air bending, straight flanging
- By Taylan Altan, Ph.D.
- Oct 9, 2003
- Bending and Forming
- Article
Editor's Note: This column was prepared by the staff of the Engineering Research Center for Net Shape Manufacturing (ERC/ NSM), The Ohio State University, Professor Taylan Altan, director. Air bending and straight flanging are the most prevalent types of bending in sheet metal forming. Predicting...
- Podcasting
- Podcast:
- The Fabricator Podcast
- Published:
- 03/26/2024
- Running Time:
- 67:51
This week on The Fabricator Podcast, Jason Becker, host of the Arc Junkies Podcast and owner of Underground...
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