Prediction of curvatures of parts extruded through rotary die using fuzzy inference

Shiraishi, Masashi; Nikawa, Makoto; Kubota, Takayuki; Goto, Yukihiro

doi:10.1016/j.jmatprotec.2006.11.212

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…Based on this idea, some scholars putforward a new bending products forming method. Shiraishi et al [7][8][9] used an inclined die to obtain pipes and bars with curvature and found that the exit height and the inclination angle of the die are important factors that affects the curvature of the products. Zhou et al [10][11][12][13] developed differential velocity sideways extrusion (DVSE) process to directly manufacture curved profiles from conventional billet material in one operation.…”

Section: Introductionmentioning

confidence: 99%

An analysis for magnesium alloy curvature products formed by staggered extrusion (SE) based on the upper bound method

Zhang

Wang

et al. 2021

Int J Adv Manuf Technol

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Section: Introductionmentioning

confidence: 99%

An analysis for magnesium alloy curvature products formed by staggered extrusion (SE) based on the upper bound method

Zhang

Wang

et al. 2021

Int J Adv Manuf Technol

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An Analysis for Magnesium Alloy Curvature Products Formed by Staggered Extrusion (SE) Based on the Upper Bound Method

Zhang

Wang

et al. 2021

Preprint

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Staggered extrusion (SE) is a new method to solve the bottleneck of traditional curvature products, such as long manufacturing cycle, many forming processes and difficult quality control. How to quantitatively control the curvature of extruded products is the key to implement this method. Herein, the upper bound method is used to calculate and analyze the power consumption of each characteristic zone in the SE process. The theoretical model of extrusion load and curvature is established. The results show that the staggered distance h has an important influence on the curvature κ. When the staggered distance h increases from 8 mm to 24 mm and other conditions remain unchanged, the curvature κ increases from 0.0546 to 0.1607. Any combination of the staggered distance h and the extrusion ratio λ corresponds to an eccentricity ratio ξ. The eccentricity ratio ξ decreases with the increase of the staggered distance h or the extrusion ratio λ. By comparison, it can be seen that the variation trend of the theoretical predicted value and the FE modelling in the steady-state extrusion stage is consistent. The experimental results are in good agreement with the curvature theory prediction model. These results provide a scientific basis for the formulation of the SE process and precisely controlling magnesium alloy curvature products.

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New Extrusion Process to Control Bending and Twisting of Extruded Products

Nikawa¹,

Shiraishi²,

Kihara³

2010

SOSEI-TO-KAKOU

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Prediction of curvatures of parts extruded through rotary die using fuzzy inference

Cited by 3 publications

References 3 publications

An analysis for magnesium alloy curvature products formed by staggered extrusion (SE) based on the upper bound method

An analysis for magnesium alloy curvature products formed by staggered extrusion (SE) based on the upper bound method

An Analysis for Magnesium Alloy Curvature Products Formed by Staggered Extrusion (SE) Based on the Upper Bound Method

New Extrusion Process to Control Bending and Twisting of Extruded Products

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