Stamping of Hemispheric Surface Parts in Die Tool Equipped with Steel Elastic Element

Abstract:

In the present investigation, the innovated drawing method combined with calibration process by elastic steel element of hemispheric surface part is studded. During drawing process strong meridional lengthen strength appears. That influence on necking and differential deformation distribution. In its tern, that influence on sizes and surface accuracy. Elastic element, produced of spring steel and placed along with solid punch designed to calibrate part in final drawing stage due to elastic strength happened in it. A simulation of hemispheric surface part drawing with elastic element was held. Experiment demonstrates positive influence of elastic element to decrease necking till 15-18% from started thickness. The produced part has correct strain-stress state, exact surface and minimum dispersion of dimensions.

• Periodical: Key Engineering Materials (Volume 684)
• Pages: 234-241
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.684.234
• Online since: February 2016
• Authors: Elena Nesterenko
• Keywords: Calibration, Channeling, Correction, Deformation, Draw-Forming, Hemisphere, Model Technique, Sheet-Metal Stamping, Steel Elastic Element, Strain-Stress

References

[1] Marciniak Z., Duncan J. L and Hu S.S. Mechanics of Sheet Metal Forming, (2002).

[2] Schuler GmbH. Metal forming, Handbook, Springer, (2012).

[3] CHEN Jun, SHI Xiao-xiang, RUAN Xue-yu. Numerical simulation-driven optimization of sheet metal drawing part shape [J]. Trans Nonferrous Met Soc China, 2003, 13 (4): 845-848.

[4] Patent 2212970 Russian Federation, MPKВ21D22/10. Sheet metal forming by hydro-elastic fluid long solid punch /Birukov N.M.; appellant and patent holder OJS «Technoschit» - № 2001122077/02; app. 09. 08. 2001; published. 27. 09. 2003, Journal. №18.

[5] Patent. 2162759 Russian Federation, MPKB21D22/10. Forming method by elastic fluid /Tomilov M.F., Shagunov A.V.; appellant and patent holder Voroneg State Technical University - № 99104855/02; app. 10. 03. 1999; published. 10. 02. 2001, Journal. №16.

[6] Patent 1405205, Great Britain, Cl. B 21 D 22/02/51/1 В3 Q2 A3 2Б 3, Published. 13. 09. (1973).

[7] Bor-Tsuen Lin, Kun-Min Huang, Chun-Chih Kuo, Wen-Ting Wang, Improvement of deep drawability by using punch surfaces with microridges, Journal of Materials Processing Technology, 225 (2015) 275-285.

DOI: 10.1016/j.jmatprotec.2015.06.012

[8] T. Walde, H. Riedel, Simulation of earing during deep drawing of magnesium alloy AZ31, Acta-Materialia 55 (2007) 867-874.

DOI: 10.1016/j.actamat.2006.09.007

[9] Dem'yanenko E.G. A Technique of Shaping the Barrel-Type Pats/ Russian Aeronautics, 2014, Vol. 57, No. 2, pp.204-211.

[10] Dem'yanenko E.G. Forming of thin-walled axisimmetric parts with buckled and concave shape based on bead forming process / Blank production in millwrighting, 2014, №7, pp.23-28.

[11] Popov I.P., Zimarev M.V., Nesterenko E.S. Improvement of thin wall cone shape parts' forming / Blank production in millwrighting, №7, 2012 г., pp.18-21.

[12] Erisov Y.A., Grechnikov F.V. Influence of structure parameters on process stability of anisotropic blanks' forming / News of SNC RAS, №4, Samara, 2012, pp.293-298.

[13] GAO En-zhi, al/Trans, Influences of material parameters on deep drawing of thin-walled hemispheric surface part, Transactions of Nonferrous Metals Society of China, 19 (2009) 433-437.

DOI: 10.1016/s1003-6326(08)60291-5

[14] J. Mater. Sci. Technol., Prediction of Failure Modes during Deep Drawing of Metal Sheets with Nickel Coating, Journal of Materials Science Technology, 2013, 29 (11), 1059-1066.

DOI: 10.1016/j.jmst.2013.08.001

[15] Golovlev V.D. Designing of sheet metal forming processes. M.: Millwrighting, (1974).

[16] Bojarshinov, S.V. Bases of machinery structural analyses. Tutorial for high school students. M.: Millwrighting, (1987).