The Development of Ring Rolling Technology - Part 2: Investigation of Process Behaviour and Production Equipment

Allwood, Julian M.; Tekkaya, A. Erman; Stanistreet, Timothy F.

doi:10.1002/srin.200506044

Cited by 53 publications

(22 citation statements)

References 75 publications

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“…Δb 1 and Δb 2 are the maximum feed amounts per revolution determined by Eqs. (11) and (18), respectively, by setting the friction coefficient as 0.35. Δb s is the numerical simulation result obtained by using finite element software ABAQUS.…”

Section: Gripping Condition Modificationmentioning

confidence: 99%

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Feeding interval design considering multiconstraints in flat ring rolling process

Zhou

Jiang

et al. 2015

Int J Adv Manuf Technol

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This paper aims to develop a feeding strategy for flat ring rolling process in a systematic way. Firstly, an accurate prediction for ring diameter expansion is quite essential for ring rolling, so a new mathematical model for predicting the diameter expansion of the flat ring in radial-axial rolling process has been proposed, in which the variation of ring cross section and the particularity in initial rolling phase are taken into consideration. Based on the new model, the feeding constraint due to the ring outer diameter expansion can be obtained accurately. Secondly, the gripping and penetration conditions are included in the feeding schedule design. For the gripping condition, the uneven contact pressure distribution of the working rolls on the deformed ring is calculated according to the practical condition, which is different from the traditional assumption as uniform distribution and avoids oversimplification. The rolling force capability constraint is also included in the feeding interval design as the third factor considered. For a hot rolling process, the initial rolling temperature and finish rolling temperature have great influence on the ring performance, microstructure, and forming error formation. Therefore, the rolling temperature constraint is also being considered. The condition for forming error free such as fishtail free is considered as the fifth factor in the feeding interval design. Based on the feeding interval established, the quantitative design of a flat ring rolling process is realized both in simulation and in practical production, which proves the validity of the feeding interval design.

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Section: Gripping Condition Modificationmentioning

confidence: 99%

“…Many researchers [7][8][9][10][11] including Johnson, Mamalis, and Hawkyard studied the rolling force and torque by using experimental and theoretical methods. Among them, Johnson et al found a linear relationship between rolling force and pressure.…”

Section: Introductionmentioning

confidence: 99%

Feeding interval design considering multiconstraints in flat ring rolling process

Zhou

Jiang

et al. 2015

Int J Adv Manuf Technol

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“…Large amounts of resources have successively devoted to the development of ring rolling technique in many countries like America, Russia, Germany, Japan and China, etc. Allwood et al (2005aAllwood et al ( , 2005b) made a thorough review of ring rolling work published in English and German languages by 2004, including technological characteristics of ring rolling, application of ring rolled products, comparison of ring rolling with other alternative process, previous reviews of ring rolling, key challenges for ring rolling, the evolution of ring rolling technology and equipment, etc. Since the 21st century, the situation, such as globalisation of manufacturing industry, rapid development of Chinese economic, scarcity of traditional energy resources and competition of cutting-edge technique, has proposed an intense demand of high-performance ring components.…”

Section: Introductionmentioning

confidence: 99%

Recent development of ring rolling theory and technique

Hua

Deng

Qian

2017

IJMPT

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Rings are basic mechanical components. Ring rolling is a well-known advanced plastic forming technique to manufacture high-performance seamless rings. Since the 21st century, the fast development of global manufacturing has raised an urgent request to high-performance rings, thus, comprehensive and in-depth studies on ring rolling technique were carried out. Based on long-term investigations and attentions on ring rolling, important developments of ring rolling theory and technique in recent 15 years were simply summarised, including the traditional radial ring rolling and radial-axial ring rolling, as well as the novel combined ring rolling. It is expected to give a valuable reference to the research and application of ring rolling.Keywords: ring rolling; theory; technology; equipment; recent development.Reference to this paper should be made as follows: Hua, L., Deng, J. and Qian, D. (2017)

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“…For a kind of ring with small hole and deep groove, Hua et al [8] built analytical models of rolling power, torque and force by means of the classic plastic mechanics theory of upper bound method combined with static analysis and calculation of kinematical admissible velocity field. Allwood et al [9,10] summarized ring rolling technology and previous researches, including the evolution of rolling equipment design, the methods used to research ring rolling, developments in productive process, and characteristics of all kinds of rings.…”

Section: Introductionmentioning

confidence: 99%

Effects of blank dimension on forming characteristics during conical-section ring rolling of Inco718 alloy

Zhu

Liu

et al. 2015

Int J Adv Manuf Technol

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For profile ring rolling of difficult-to-deform materials, geometry and dimensions of blank are critical for dimensional accuracy and thermomechanical parameters distribution of the formed ring. In this study, four blank design principles for conical-section ring rolling are presented based on analytical description of the volume distribution characteristic curve (VDCC), and then effects of all dimension factors of the four blanks are explored comprehensively by using 3D coupled thermomechanical FE model established based on FORGE. According to the comprehensive analysis, optimal blank design principle for conical-section ring rolling is determined. The results obtained show that: (1) Preparation stage of rolling process (PSRP) is an essential stage for slope forming without wall thickness reduction, and the essence of PSRP is the process that the metal in rolling cavity seeking for balanced pressure along axial direction. (2) Unequal slope and unequal wall thickness have obvious effects on stress distribution. (3) We can, through controlling local deformation in PSRP and shortening the time of PSRP, improve the strain and the temperature distribution.

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The Development of Ring Rolling Technology - Part 2: Investigation of Process Behaviour and Production Equipment

Abstract: steel research int. 76 (2005) NO.7 steel research int. 76 (2005) NO.7

Cited by 53 publications

References 75 publications

Feeding interval design considering multiconstraints in flat ring rolling process

Feeding interval design considering multiconstraints in flat ring rolling process

Recent development of ring rolling theory and technique

Effects of blank dimension on forming characteristics during conical-section ring rolling of Inco718 alloy

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