Study on closed-die forging technology and numerical simulation of T-junction of high-pressure pipe

Study on closed-die forging technology and numerical simulation of T-junction of high-pressure pipe

Wei ZhangYandong Yu Zhong Li Junping Li

Harbin University of Science and Technology Rongcheng School, Rongcheng 264300, China

Harbin University of Science and Technology School of Material Science and Engineering, Harbin 150040, China

Corresponding Author Email: 
zhangw_hrbust@163.com
Page: 
439-448
|
DOI: 
https://doi.org/10.3166/RCMA.28.439-448
| |
Published: 
30 September 2018
| Citation

ACCESS

Abstract: 

T-junction of high-pressure pipe which is formed by common hot forging has the disadvantages of low material utilization rate, large machining allowance and high cost, and so on. In order to improve the material utilization rate, product quality and disclose the law of precise forging. In this study, the forming method by closed-die forging technology to produce T-junction of high-pressure pipe on special press machine was put forward, a three-axis directional closed-die forging die was designed.Through the numerical simulation analysis of the forming process of junction of high-pressure pipe by Deform-3D software, the velocity field and equivalent strain field of the forming process were obtained, and the metal forming flow law was analyzed to predict the forging force. Results demonstrate that the whole forming technology can be divided into three stages: reverse upsetting, radial extrusion and combined extrusion. The final forming contour is clear and the filling is full with no folding, insufficient filling and uneven flow line. Based on the analysis of forming load, it is predicted that forging force is about 13,000 Kn. The mold design of the study is novel, the process is reasonable, and the forming quality is excellent. The proposed method provides a good prospect to determine the precise forging technique of T- junction of high-pressure pipe.

Keywords: 

high-pressure pipe, T-junction, closed-die forging, numerical simulation

1. Introduction
2. Introduction of CLOSED-DIE forging technology
3. Analysis of forming process of forgings
4. Analysis of numerical simulation
5. Conclusion
Acknowledgements
  References

Bala R. J., Govinda R. M., Murthy C. S. N. (2018). Reliability analysis and failure rate evaluation of load haul dump machines using Weibull distribution analysis. Mathematical Modelling of Engineering Problems, Vol. 5, No. 2, pp. 116-122. https://doi.org/10.18280/mmep.050209

Chen H. (2016). Analysis of numerical simulation of wading landslide in Three Gorges Reservoir area based on Outang Landslide. Mathematical Modelling of Engineering Problems, Vol. 3, No. 2, pp. 71-74. https://doi.org/10.18280/mmep.030205

Feng Y. J. (2016). Research and development of universal mechanical CAD system based on auto CAD. Mathematical Modelling of Engineering Problems, Vol. 3, No. 1, pp. 39-46. https://doi.org/10.18280/mmep.030107

Gao X. Y., Wang R. J. (2018). Optimality conditions and duality for nondifferentiable multiobjective programming. Review of Computer Engineering Studies, Vol. 5, No. 2, pp. 34-39. https://doi.org/10.18280/rces.050202

Hsu Q. C., Lei S. H. (2000). Development and analysis for the large-scale tee-forming process. Journal of Materials Processing Technology, No. 104, pp. 26-27. https://doi.org/10.1016/S0924-0136(00)00565-3

Jiang Z. Y., Tieu A. K. (2004). A 3-D finite element method analysis of cold rolling of thin strip with friction variation. Tribology Inc, pp. 37-185. https://doi.org/10.4028/www.scientific.net/KEM.233-236.419

Medina Y. C., Fonticiella O. M. C., Morales O. F. G. (2017). Design and modelation of piping systems by means of use friction factor in the transition turbulent zone. Mathematical Modelling of Engineering Problems, Vol. 4, No. 4, pp. 162-167. https://doi.org/10.18280/mmep.050204

Mohammed B., Ali B. (2016). Modeling the problem of contact and friction between a body elastic and rigid foundation. Mathematical Modelling of Engineering Problems, Vol. 3, No. 4, pp. 191-194. https://doi.org/10.18280/mmep.030407

Ren Y. L., Niu L. J., Cao F. H., Ren J. (2014). Development of muti-ram forging techniques and equipment. Journal of Shang Hai Ji Dian University, Vol. 17, No. 3, pp. 125-131. https://doi.org/10.3969/j.issn.2095-0020.2014.03.001

Sun G. Z. (2012). Numerical simulation on the forging process of triple value. Journal of Netshape Forming Engineering, Vol. 4, No. 6, pp. 85-87. https://doi.org/10.3969/j.issn.1674-6457.2012.06.024

Wang X. R., Ren G. L., Zhang J. X. (2018). Numerical simulation and optimization analysis of thermal balance of heavy oil box-type substation louver arrangement. Mathematical Modelling of Engineering Problems, Vol. 5, No. 1, pp. 21-26. https://doi.org/10.18280/mmep.050103

Xu J. S. (2002). Study on metal flow in multi-ram forging process of equal diameter tee joint. Forging & Stamping Technology, No. 4, pp. 11-14. https://doi.org/10.3969/j.issn.1000-3940.2002.04.004

Yu H. (2018). Numerical simulation of European option payoff based on stochastic differential delay equations. Mathematical Modelling of Engineering Problems, Vol. 5, No. 2, pp. 102-107. https://doi.org/10.18280/mmep.050207

Zheng B. B., Dong C. Y., Xue K. M., Li Q., Zhou J. K. (2010). Study on multi-ram forging process of triple-valve body. Journal of Netshape Forming Engineering, Vol. 2, No. 5, pp. 61-63. https://doi.org/10.3969/j.issn.1674-6457.2010.05.017