Strain distribution characteristics of welded tube in NC bending process using experimental grid method

Ren, Ning; Yang, He; Zhan, Mei; Zhang, Zhiyong; Qin, YaTao; Jiang, Haomin; Diao, Kaidi; Chen, Xinping

doi:10.1007/s00170-012-4354-2

Cited by 5 publications

(1 citation statement)

References 17 publications

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“…The results shown that the weld and HAZ materials have obvious constraining effects on the strain distributions in weld and HAZ when the weld line locates on the outside and inside of the bent tube. In addition, the effect of the weld on the strain distribution of the tube during NC bending process was also performed by Ren et al [15]. The research found that the thickness strain decreases obviously in the weld region when the weld line locates on the outside and inside.…”

Section: Introductionmentioning

confidence: 97%

Investigation on the influence of weld position on the deformation behavior of welded tube during free bending process

Cheng

Pan

Bai

et al. 2022

Int J Adv Manuf Technol

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The non-uniform distribution of the mechanical properties of welded tube would affect the plastic deformation behavior of tube during the free bending process. To explore the influence of weld position on the forming quality and axis dimensional accuracy of welded tube, the free bending experiment and numerical simulation of welded tube were conducted in this paper. First, the principle of free bending was theoretical deduced and the stress distribution of bent tube was analyzed. Then the hardness test and uniaxial tensile test were conducted to obtain the mechanical properties of weld zone and parent zone of welded tube. The material strength in the weld zone of welded tube is significantly higher than that in the parent zone.Finally, the free bending experiment and numerical simulation with different weld position were carried out, and the influence of weld position on the bending radius, cross-sectional distortion and wall thickness of bent tube was discussed. All these findings advance the insight into the free bending deformation behavior of welded tube and help to improve the forming quality of welded tube and facilitate the application of free bending technology in welded tube.

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Section: Introductionmentioning

confidence: 97%