Education, Science, Technology, Innovation and Life
Open Access

### Effect of process parameters on the volume of the stub bar of Rolled Piece by Cross Wedge Rolling under the different end shapes

#### Author(s)

Duanlu Guo 1, Xin Lu 1

#### Affiliation(s)

1 China Academy of Machinery Science & Technology, No. 2, Shouti South Road, Haidian District, 100044 Beijing, China

Duanlu Guo

#### ABSTRACT

The forming process of rolling workpieces with different end shapes with cross wedge rolling was simulated by the software Deform-3D. And combined with the principle of blank compensation method, the influence of process parameters on the volume of the stub bar of workpiece with flat end and circular-arc end was analyzed, and the method to effectively control the concavity of rolled piece end surface is brought forward by using circular-arc billet. According to the obtained research results, the volume of stub bar is in direct proportion to the spreading angle, and decreases at first and then increases with the increasing of the forming angle, and increases at first and then decreases with increasing of the area reduction, and increases at first and then keep approximately invariant with increasing of mill length. Finally, the feasibility of using circular-arc billet to reduce the concavity were verified by rolling experiment.

#### KEYWORDS

Cross Wedge Rolling, Stub Bar, Process Parameters, Numerical Simulation.

#### CITE THIS PAPER

Duanlu, G. , Xin L. Effect of process parameters on the volume of the stub bar of Rolled Pieceby Cross Wedge Rolling under the different end shapes. Journal of Engineering Mechanics and Machinery (2017) 2: 1-7.

#### REFERENCES

[1] MA Zhenhai, YANG Cuiping, HU Zhenhuan. Study on effect factors of end concavity in cross wedge rolling[J]. Forging Stamping Technology, 2002, 27(1):29-31.
[2] ZHANG Xiaoying. Simulation of deformation principle of near net shape cross wedge rolling process to form shafts without concavitys[J]. Forging Stamping Technology, 2013,2（38）:156-160.
[3] WEI Xinhong, SHU Xuedao. Effect of end shape of blank on cavity of workpiece with CWR[J]. Hot Working Technology, 2011,40(21):61-63.
[4] LIU Chuan, SHU Xuedao. Effect of circular are angle on end concavity of CWR rolled piece[J]. Hot Working Technology, 2015,44(15):101-108.
[5] YANG Guang, ZHANG Kangsheng, DUAN Wanze, et al. Effect of process parameters on the end scrap of no-step--end workpieces by cross wedge rolling[J]. Journal of University Science and Technology Beijing, 2014,36(7):959-965.