Study on the Migration Law of Unmelted WC Particles during the Process of Centrifugal Casting

Abstract:

A model of the movement of WC reinforcing particles with the effect of centrifugal force during the process of centrifugal casting was established. The motion equations of the WC particles were solved in this model. The motion curve of the WC particles WC particle was drawn according to the motion equation, and the influential factors of WC particle's movement are analyzed. The conclusions show that: the radical movement speed of the WC particles increases with the increase of time, and the movement distance increases by exponentially at the same time. The particle movement distance at the same time increases due to the larger diameter, the quicker centrifugal speed and the higher the casting temperature. The radial pitch of the particle with different initial position becomes lager with the increase of time. Centrifugal Casting formed the final particle reinforced composites, in which the volume fraction of WC particles gradient increased from the inner surface to the outer surface.

• Periodical: Advanced Materials Research (Volume 320)
• Pages: 394-398
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.320.394
• Online since: August 2011
• Authors: Zhen Kai Zhao, Yan Pei Song, Zhi Ming Feng
• Keywords: Centrifugal Casting, Centrifugal Field, Migration Law, Mill Roll, WC Particles

References

[1] Yu Si-Rong, Ren Lu-Quan, Tong Jin. Theoretical analysis on the movement behavior of particles in metal melting centrifugal field[J]. Acta Materiae Composites Sinica. 2001. 18(3). 47－49. In Chinese.

[2] Song YanPei. The research of Large sections WCp/Fe-C composites' property and formation mechanism for gradient structure [D]. Shanghai University, 2006. In Chinese.

[3] Huang KeZhi, Wang ZiQiang. The design of material micromechanics and tenacity. Beijing: Tsinghua University Press, 2003. In Chinese.

[4] J.W. Gao C.Y. Wang. Modeling the solidification of functionally graded materials by centrifugal casting[J]. Materials Science and Engineering A292 (2000) 207–215.

DOI: 10.1016/s0921-5093(00)01014-5