Processing limit maps for the stable deformation of dieless drawing

Abstract

Tin bronze wires were produced by dieless drawing. The effects of heating power, the distance between cooler and heater as well as feeding speed on the diameter, the temperature field, and the deformation region profile of the wires were investigated. The results indicated that each processing parameter exhibited both lower and upper limits of stable deformation based on the criterion of stable deformation with the diameter fluctuation of ±0.05 mm. Both the temperature and its gradient of the deformation region increased with increasing heating power under stable deformation, but decreased with an increase in feeding speed. As the distance between cooler and heater increased, the temperature of the deformation region increased and the slope of the deformation region profile decreased. The processing limit map of stable deformation exhibited a closed curve and the unstable deformation consisted of wire breakage and diameter fluctuations.

Keywords

tin bronze / wire / dieless drawing / processing parameters / turning method

References

[1] Slooff F.A., Dzwonczyk J.S., Zhou J., et al. Hot workability analysis of extruded AZ magnesium alloys with processing maps. Mater. Sci. Eng. A, 2010, 527(3): 735.

[2] Ramanathan S., Karthikeyan R., Gupta M. Development of processing maps for Al/SiC_p composite using fuzzy logic. J. Mater. Process. Technol., 2007, 183(1): 104.

[3] Huang G.S., Wang L.Y., Chen H., et al. Hot deformation and processing maps of 2618 aluminum alloy. Chin. J. Nonferrous Met., 2005, 15(5): 763.

[4] Li Q.B., Zhou H.T., Jiang Y.F., et al. Research status quo and prospect of the theory of shop drawing. Nonferrous Met. Eng. Res., 2009, 30(4): 1.

[5] Fortunier R., Sassoulas H., Montheillet F. A thermo-mechanical analysis of stability in dieless wire drawing. Int. J. Mech. Sci., 1996, 39(5): 615.

[6] T. Furushima and K. Manabe, A novel processing for microtubes-superplastic dieless drawing technique, [in] The 9th International Conference on Technology of Plasticity, Gyeongju, 2008, p.205.

[7] Furushima T., Manabe K. Experiment study on multi-pass dieless drawing process of superplastic Zn-22%Al alloy microtubes. J. Mater. Process. Technol., 2007, 187–188(12): 236.

[8] Naughton M.D., Tiernan P. An experimental analysis of the dieless drawing process (Variant B) using ELI grade Ti-6Al-4V wire alloy. Proc. Inst. Mech. Eng. Part B J. Eng. Manuf., 2007, 222, 225.

[9] Tiernan P., Hillery M.T. An analysis of wire manufacture using the dieless drawing method. J. Manuf. Processes, 2008, 10(1): 12.

[10] Li Y.G., Quick N.R., Kar A. Structural evolution and drawability in laser dieless drawing of fine nickel wires. Mater. Sci. Eng. A, 2003, 358(1–2): 59.

[11] Li Y.G. Laser Micro-processing and Thermomechanical Modeling of Plasticity for Dieless Wire Drawing, 2002 Florida, University of Central Florida, 95.

[12] Tao G.F., Wang X.X. College Students’ Creative Psychological, 2006 Shanghai, LiXin Accounting Publish House, 200.

[13] Qin B., Yan C.P., Liu F. Efficient recognition of large-scale closed space graph based on turning method. Comput. Eng., 2009, 35(14): 184.

[14] Furushima T., Manabe K. Fe analysis of size effect on deformation and heat transfer behavior in microtube dieless drawing. J. Mater. Process. Technol., 2008, 201(1–3): 123.

[15] Zhang H.S., Zhang Y.S., Fang X.Y. The method of pick-upping outline information in 2d closed graph by vector multiplication. Comput. Eng. Appl., 2002, 38(8): 93.