A quasi-steady-state analysis for radial forging

Thompson, Erik G.; Hamzeh, Osama; Jackman, L.A.; Srivatsa, Shesh

doi:10.1016/0924-0136(92)90084-6

Cited by 12 publications

(5 citation statements)

References 3 publications

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“…2 (обтискання) з точки зору створення напружено-деформованого стану та протікання пластичних деформацій в зразку -практично відсутні. Радіальне кування [7,8,9], зокрема, може проводиться на устаткуванні типу SНК-17 австрійської фірми GFM, яка є фактичним монополістом у виробництві цього виду обладнання [2]. До головних переваг радіального кування відносяться те, що даний спосіб дозволяє отримувати вироби з внутрішньою поверхнею необхідної геометрії з достатньою точністю.…”

Section: вступunclassified

Universal research installation for compression of tubular billets

Titov¹,

Godziy²,

Myronenko³

2022

Mech. Adv. Technol.

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The research was conducted at the Department of Aircraft Technology and Design of the Educational and Research Institute of Mechanical Engineering of the National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”. On the basis of performance of scientific subjects concerning compression of a tubular cavity preparation with formation of an internal cavity the most perspective schemes of such technological processing were investigated and technological and constructive elements of processes and the equipment were defined. Indicators such as quality (compliance of the product with the requirements of use) and its cost, process productivity, technical and economic characteristics and versatility of the equipment were taken into account. To experimentally confirm the chosen direction of implementation, first of all, experimental equipment was designed and the technical process was modeled according to each of the proposed schemes.

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Section: вступunclassified

Universal research installation for compression of tubular billets

Titov¹,

Godziy²,

Myronenko³

2022

Mech. Adv. Technol.

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“…Figure 9 presents a typical tool arrangement in radial forging for the four-die machine. The three dimensional quasi-steady state analysis of radial forging process was developed by Thompson et al [7][8]. After each forging blow, the chucks at each end of the billet feed the workpiece axially.…”

Section: Forming Rollsmentioning

confidence: 99%

Applications of Finite Element Modeling in Industrial Forming Processes at the Timken Company

Sawamiphakdi¹,

Pauskar²,

Lahoti³

2004

AIP Conference Proceedings

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Advances in stabilized finite element methods for bulk and sheet metal forming processes AIP Conf.Abstract. At The Timken Company, finite element modeling has been utilized successfully to design, improve and optimize metal forming processes in many areas from steel making processes for long products and tubes, and forming and shaping of discrete parts. It is very challenging to apply the finite element modeling to most incremental forming processes due to continuously changing contact conditions between workpiece and forming tools. This paper illustrates the use of different finite element formulations for the analysis of various incremental forming processes. Each finite element analysis (FEA) program has its own advantages and disadvantages in the areas of computational time and accuracy of results, so the selection of proper program to analyze a certain process is quite significant. Unique applications of FEA programs to assist the design of tooling and process parameters of several forming processes at The Timken Company are discussed. The analysis results of several cases were compared with available in-plant data and excellent agreement was observed.

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“…Finite-element process models [28][29][30] can be used to predict the temperature distribution throughout the forged billet during each pass of the radial-forging operation. With these predictions, it is possible to design hot-working practices to provide the desired microstructural features.…”

Section: Grain-structure Evolutionmentioning

confidence: 99%

The structural evolution of superalloy ingots during hot working

Jones¹,

Jackman²

1999

JOM

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Editor's Note: A hypertext-enhanced version of this paper can be found on JOM's web site at www.tms.org/pubs/ journals/JOM/9901/ForbesJones-9901.html.This article provides an overview of structural changes that occur during the hot working of superalloys and provides insight into the use of precipitated particles and other thermomechanical factors to achieve desired structures. Examples will focus primarily on alloys 718 and 720, which are iron-nickel and nickel-based alloys, respectively. The availability of a second phase to control grain size is a characteristic of some iron-nickeland nickel-based superalloys that is not usually available to cobalt-based superalloys; processing with and without the use of a precipitated phase that influences microstructures will be illustrated by the use of these examples. ABOUT THE AUTHORSRobin M. Forbes Jones earned his Ph.D. in metallurgy at Imperial College of Science and Technology, London University, in 1967. He is currently manager of long-range product/ process R&D for Allvac.Laurence A. Jackman earned his Ph.D. in metallurgy at Rensselaer Polytechnic Institute in 1967. He is currently chief materials scientist at Allvac. Dr. Jackman is also a member of TMS.For more information, contact R.M. Forbes Jones,

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A quasi-steady-state analysis for radial forging

Cited by 12 publications

References 3 publications

Universal research installation for compression of tubular billets

Universal research installation for compression of tubular billets

Applications of Finite Element Modeling in Industrial Forming Processes at the Timken Company

The structural evolution of superalloy ingots during hot working

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