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TA18高強(qiáng)鈦管數(shù)控彎曲成形截面扁化研究
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河南科技大學(xué),河南科技大學(xué),西北工業(yè)大學(xué),河南科技大學(xué),河南科技大學(xué),河南科技大學(xué),河南科技大學(xué)

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基金項(xiàng)目:

中國(guó)博士后科學(xué)基金(2016M590677),河南省基礎(chǔ)與前沿技術(shù)研究基金資助項(xiàng)目(162300410211),西北工業(yè)大學(xué)凝固技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室開放課題資助項(xiàng)目(SKLSP201631)


Research on section flattening in numerical control bending process of TA18 high strength tube
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Affiliation:

Henan University of Science and Technology,Henan University of Science and Technology,Northwestern Polytechnical University,Henan University of Science and Technology,Henan University of Science and Technology,Henan University of Science and Technology,Henan University of Science and Technology

Fund Project:

The China Postdoctoral Science Foundation(2016M590677); The Basic and Advanced Technology Research Program of Henan Province(162300410211); The fund of the State Key Laboratory of Solidification Processing in NWPU(SKLSP201631)

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    摘要:

    截面扁化是管材彎曲成形過程中不可避免的物理現(xiàn)象，而嚴(yán)重的截面扁化會(huì)影響彎管件的合理裝配，從而制約其廣泛應(yīng)用。本文建立了考慮收縮應(yīng)變比和彈性模量變化的鈦管數(shù)控彎曲成形有限元模型，研究了不同幾何條件和不同工藝條件下TA18鈦管的截面扁化行為。結(jié)果表明：同時(shí)考慮收縮應(yīng)變比和彈性模量變化規(guī)律可使截面扁化量發(fā)生改變，對(duì)變化規(guī)律無顯著影響。獲得了合理的幾何、工藝參數(shù)范圍。為研究TA18鈦管的成形預(yù)測(cè)與控制并最終實(shí)現(xiàn)精確成形提供了依據(jù)。

    Abstract:

    Section flattening is an inevitable physical phenomenon in the forming process of tube bending, and severe section flattening will affect the reasonable assembly of the tube fittings, and therefore restricts its wide application. Finite element (FE) model for numerical control (NC) bending of titanium tube considering the variation law of contractile strain ratio (CSR) and the Young"s modulus (E) is established in this paper. The section flattening behaviors of TA18 tube under different geometric conditions and different process conditions have been investigated. The results show that considering the variation law of CSR-E can make the cross-section change, which has no remarkable influence on the change law. The reasonable range of geometric and process parameters are obtained, which provides a basis for studying the forming prediction and controlling the final precision for the NC bending of TA18 tube.

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皇濤,楊方方,詹梅,郭俊卿,陳學(xué)文,陳拂曉,宋克興. TA18高強(qiáng)鈦管數(shù)控彎曲成形截面扁化研究[J].稀有金屬材料與工程,2018,47(8):2347~2352.[Huang Tao, Yang Fangfang, Zhan Mei, Guo Junqing, Chen Xuewen, Chen Fuxiao, Song Kexing. Research on section flattening in numerical control bending process of TA18 high strength tube[J]. Rare Metal Materials and Engineering,2018,47(8):2347~2352.]
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  • 收稿日期:2017-09-06
  • 最后修改日期:2017-10-14
  • 錄用日期:2017-11-01
  • 在線發(fā)布日期: 2018-10-17
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