0
Research Papers: Materials and Fabrication

Theoretical and Experimental Study of Bimetal-Pipe Hydroforming

[+] Author and Article Information
Zeng Dezhi

State Key Laboratory of Oil
and Gas Reservoir Geology and Exploitation,
Southwest Petroleum University,
Chengdu, Sichuan 610500, China;
CNPC Key Lab for Tubular Goods Engineering,
Southwest Petroleum University,
Chengdu, Sichuan 610500, China

Deng Kuanhai, Zhu Hongjun

CNPC Key Lab for Tubular Goods Engineering,
Southwest Petroleum University,
Chengdu, Sichuan 610500, China

Shi Taihe

State Key Laboratory of Oil
and Gas Reservoir Geology and Exploitation,
Southwest Petroleum University,
Chengdu, Sichuan 610500, China

Lin Yuanhua

State Key Laboratory of Oil
and Gas Reservoir Geology and Exploitation,
Southwest Petroleum University,
Chengdu, Sichuan 610500, China
e-mail: yhlin28@163.com

Li Tianlei

China Petroleum Engineering Co., Ltd.,
Southwest Company,
Chengdu, Sichuan 610017, China

Sun Yongxing

Drilling and Production Engineering
Technology Research Institute (CCDC),
Guanghan, Sichuan 618300, China

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received December 30, 2012; final manuscript received February 12, 2014; published online September 4, 2014. Assoc. Editor: Roman Motriuk.

J. Pressure Vessel Technol 136(6), 061402 (Sep 04, 2014) (10 pages) Paper No: PVT-12-1200; doi: 10.1115/1.4026976 History: Received December 30, 2012; Revised February 12, 2014

The corrosion of oil country tubular goods (OCTG) gets more and more serious especially in the acidic environment. So, it is very important to develop a perfect anticorrosion technology for exploring sour oil and gas fields economically and safely. Analysis indicates that the bimetal-pipe (BP) which consists of the base layer of low carbon steel and a corrosion resistant alloy (CRA) cladding layer is an economic and reliable anticorrosion technology and has broad application prospects in the transportation of acid medium. However, theoretical study of hydraulic expansion mechanism for BP is not enough. In this paper, the deformation compatibility condition of BP was obtained by studying the deformation rule of the (CRA) liner and the outer pipe of carbon steel in the forming process; the mechanical model which can compute the hydroforming pressure of BP has been established based on the nonlinear kinematic hardening characteristics of material; furthermore, based on the stress strain curve of inner pipe simultaneously, the calculation method of the plastic hardening stress has been proposed. Thus, the accurate method for computing the forming pressure was obtained. The experimental data show that results are consistent with results of the proposed model. It indicates that the model can be used to provide theoretical guidance for the design and production as well as use of BP.

FIGURES IN THIS ARTICLE
<>
Copyright © 2014 by ASME
Topics: Pressure , Stress , Pipes , Hardening
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

The stress strain state characteristic and the correlation between stress and strain of BP in the forming process

Grahic Jump Location
Fig. 2

Assembly structure of the BP

Grahic Jump Location
Fig. 3

Linear interpolation based on the linear hardening model in stress strain curve

Grahic Jump Location
Fig. 4

The flow chart to calculate the plastic hardening stress

Grahic Jump Location
Fig. 7

The morphology of BP after hydraulic forming

Grahic Jump Location
Fig. 8

Circumferential microstrain of outer pipe in the process of load and unload (0–26 MPa)

Grahic Jump Location
Fig. 9

Circumferential microstrain of outer pipe in the process of load and unload (0–31 MPa)

Grahic Jump Location
Fig. 10

Circumferential microstrain of outer pipe in the process of load and unload (0–42 MPa)

Grahic Jump Location
Fig. 11

Circumferential microstrain of outer pipe in the process of load and unload (0–48 MPa)

Grahic Jump Location
Fig. 12

The relationship between forming pressure and test results

Grahic Jump Location
Fig. 13

The force diagram during the forming stage of BP: (a) assembly of the BP; (b) inner pipe, and (c) outer pipe)

Grahic Jump Location
Fig. 14

The force diagram of formed BP: (a) assembly of the BP; (b) inner pipe, and (c) outer pipe)

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In