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Improvement of surface quality of 1.6220 cast steel by calibrating process and effects on material behavior

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Abstract

There is a growing demand for thin walled steel casting structural parts especially in the automotive industry. Therefore an economic casting process is needed, that provides high surface quality. Requirements of spot weldability and corrosion protection need to be met, which is not possible with high surface roughness. Therefore a calibrating step is introduced aimed at reducing the surface roughness of the sand cast steel samples. Besides surface quality, also changes in geometrical dimensions and mechanical properties are investigated. Calibrating was carried out as planar forging on a forging device. This combined process of casting and forging did lead to a significant reduction of the roughness values, but this effect could only be observed in the edge area of the investigated sample plates. Furthermore a deformation of material in thickness direction and flow of material in width direction was noted. A relationship between deformation in thickness direction and straightening was detected. Another one between material flow and reduction of roughness values. Tensile tests and impact tests revealed a more brittle behavior of the material in calibrated state. Also the influence of wall thickness and heat treatment was investigated. Whereas wall thickness (as the local amount of material) mainly determines deformability and in consequence the straightening effect, heat treatment increases the ability of the material to flow, which contributes to the reduction of surface roughness. The inhomogeneity of the surface effect in combination with an extraordinary high required force remain as the main issue in trying to achieve a uniform surface quality improvement by calibrating process.

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References

  1. Jiang J, Wang Y, Li Y, Qu J, Shan W, Luo S (2012) A double control forming technology combining die casting and forging for the production of Mg alloy components with enhanced properties. J Mater Process Technol 212:1191–1199

    Article  Google Scholar 

  2. Jiang J, Wang Y, Li Y, Shan W, Luo S (2012) Microstructure and mechanical properties of the motorcycle cylinder body of AM60B magnesium alloy formed by combining die casting and forging. Mater Des 37:202–210

    Article  Google Scholar 

  3. Zhang Q, Cao M, Zhang D, Zhang S, Sun J (2014) Research on integrated casting and forging process of aluminum automobile wheel. Adv Mech Eng. https://doi.org/10.1155/2014/870182

    Article  Google Scholar 

  4. Zhou HT, Xu SX, Li WD, Wang SC, Peng Y (2015) A study of automobile brake bracket formed by casting-forging integrated forming technology. Mater Des 67:285–292

    Article  Google Scholar 

  5. Kim HR, Seo MG, Bae WB (2002) A study of the manufacturing of tie-rod ends with casting/forging process. J Mater Process Technol 125–126:471–476

    Article  Google Scholar 

  6. Dedov S, Lehmann G, Kawalla R (2013) Application of combined casting-forging process for production of durable lightweight aluminum parts. Key Eng Mater 554–557:264–273

    Article  Google Scholar 

  7. Di Serio T (1987) Procédé pour fabriquer des pièces en aluminium ou en alliage d’alluminium. EP 0 119 365 B1

  8. Bouvier V, Gendre B (2007) The COBAPRESS(TM) process: a process rich of a twenty five years experience, with a bright future. Hommes Fonderie 378:10–16

  9. Flemings MC, Boylan JF, Bye RL (1978) Thixocasting Steel Parts. Final technical report: contract number DAAG-46-77-C-0033. Massachusetts Institute of Technology

  10. Püttgen W, Bleck W, Hirt G, Shimahara H (2007) Thixoforming of steels—a status report. Adv Eng Mater 9(4):231–245

    Article  Google Scholar 

  11. Hirt G, Bleck W, Bührig-Polaczek A, Shimahara H, Püttgen W, Afrath C (2006) Semi solid casting and forging of steel. Solid State Phenom 116–117:34–43

    Article  Google Scholar 

  12. Balan T, Becker E, Langlois L, Bigot R (2017) A new route for semi-solid steel forging. CIRP Ann Manuf Technol 66:297–300

    Article  Google Scholar 

  13. Siegert K, Messmer G (2004) Thixoforging of steel alloys—facility requirements for industrial application. Steel Res Int 75(8/9):601–606

    Article  Google Scholar 

  14. Küthe F, Schönbohm A, Abel D, Kopp R (2004) An automated thixo-forging plant for steel parts. Steel Res Int 75(8/9):593–600

    Article  Google Scholar 

  15. Werke M, Gotte A, Sibeck L (2014) CastForging for production of components with tailored geometry and strength. Fordonsstrategisk Forskning och Innovation FFI, Stockholm

    Google Scholar 

  16. Li H (2012) A study of surface roughness in the metal forming process. Dissertation, University of Wollongong

  17. Kimura Y, Childs THC (1999) Surface asperity deformation under bulk plastic straining conditions. Int J Mech Sci 41:283–307

    Article  Google Scholar 

  18. Sutcliffe MPF (1988) Surface asperity deformation in metal forming processes. Int J Mech Sci 30:847–868

    Article  Google Scholar 

  19. Ike H (1995) Plastic deformation of surface asperities associated with bulk deformation of metal workpiece in contact with rigid tool. In: Raous M et al (eds) Contact mechanics. Plenum Press, New York, pp 275–286

    Chapter  Google Scholar 

  20. Korzekwa DA, Dawson PR, Wilson WRD (1992) Surface asperity deformation during sheet forming. Int J Mech Sci 34:521–539

    Article  Google Scholar 

  21. Nielsen CV, Bay N (2017) Overview of friction modelling in metal forming processes. Procedia Eng 207:2257–2262

    Article  Google Scholar 

  22. Behrens BA (2012) Gesenkschmieden. In: Hofmann H, Neugebauer R, Spur G (eds) Handbuch Umformen. Carl Hanser, Munich, pp 244–309

    Google Scholar 

  23. Martín F, Martín MJ, Sevilla L, Sebastián MA (2015) The ring compression test: analysis of dimensions and canonical geometry. Procedia Eng 132:326–333

    Article  Google Scholar 

  24. International Standard ISO 4288 (1996-08-01) Geometrical Product Specifications (GPS)—Surface texture: Profile method—rules and procedures for the assessment of surface texture. International Organization for Standardization, Genève

  25. Deutsche Norm DIN 50125 (2016-12) Prüfung metallischer Werkstoffe—Zugproben. Deutsches Institut für Normung, Berlin

  26. International Standard ISO 148-1 (2016-10-15) Metallic materials—Charpy pendulum impact test—Part 1: Test method. International Organization for Standardization, Genève

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Acknowledgements

This publication is based on the Bachelor’s Thesis of second named author Andreas Schirmeyer, which was carried out under the mentorship of first named author Florian Hofbauer. This unpublished work Vergleichende Charakterisierung der Oberfläche und Eigenschaften von kalibriertem dünnwandigem Stahlguss was completed in March 2018 at the Landshut University of Applied Sciences, Mechanical Engineering Department.

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Authors and Affiliations

  1. BMW Group, Munich, Germany

    Florian Hofbauer

  2. Fakultät Maschinenbau, Fachhochschule Landshut, Landshut, Germany

    Andreas Schirmeyer

  3. Lehrstuhl für Umformtechnik und Gießereiwesen, Technische Universität München, Munich, Germany

    Wolfram Volk

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  1. Florian Hofbauer
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  2. Andreas Schirmeyer
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  3. Wolfram Volk
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Correspondence to Florian Hofbauer.

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Hofbauer, F., Schirmeyer, A. & Volk, W. Improvement of surface quality of 1.6220 cast steel by calibrating process and effects on material behavior. Prod. Eng. Res. Devel. 12, 797–806 (2018). https://doi.org/10.1007/s11740-018-0853-9

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  • DOI: https://doi.org/10.1007/s11740-018-0853-9

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