ANALYSIS OF THE WELDING RECONDITIONING POSSIBILITIES OF MEDICAL PROSTHESIS
Improper development of primary manufacturing processes can cause defects in finished products. The paper presents a comparative analysis of two reconditioning technologies used for an interlocking intramedullary nail type prosthesis, made of titanium alloy Ti-6Al-4V, using Tungsten Inert Gas (TIG) welding. Based on the results obtained for the first reconditioning technology, the second technology was developed. By modifying the joint's shape and the welding current used in the first reconditioning technology, resulted a proper joint in terms of operating characteristics. After analyzing the results obtained it can be stated that welding reconditioning technologies can be a reliable solution for technological loss caused by defects occurred in the manufacturing process of medical prosthesis.
2. I.L. Gligor,Cercetăriasupraunorbiomateriale cu bază titan pentruimplanturi, Editors eds., ClujNapoca, Phd. Degree,(2011).
3. A. Clark, A. E., Hench, L. L., & H.A. Paschall, Fox, T.Q., Dog, T.L., The influence of surface chemistry on implant interface histology: A theoretical basis for implant materials selection, J. Biomed. Mater. Res., 10, p. 161–177.(1998).
4. D.F. Williams, Definitions in Biomaterials, Proceedings of a Consensus Conference of the European Society for Biomaterials, Elsevier (Vol. 4), New York, p.525-533, (1992),
5. D.F. Williams, On the mechanisms of biocompatibility (Biomaterials Vol. 29) pp 2941-2953, (2008).
6. N. Dumitraşcu, BiomaterialeşiBiocompatibilitate, Ed. Univ. Al. I. CuzaIaşi, (2007).
7. Angelescu R M , et al. Mechanical, Structural And Corrosion Analysis Of A Ti-Nb-Zr-Fe Alloy Esignated To Oral ImplantologyU.P.B. Sci. Bull., Series B, Vol. 77,(2015).
8. H.J. Rack, J.I. Qazi, Titanium alloys for biomedical applications, Materials Science and Engineering C 26 Elsevier, p. 1269 – 1277, (2006).
9. R. Boboescu, R. Laslău, Analyze of welding regime in laser welding with full factorial design experiments, Nonconventional Technologies Review / Revista de Tehnologiineconventionale . Sep2012, Vol. 16 Issue 3, p4-9. 6p
10. Mohsin T M, Zahid A K and Arshad N S Beta Titanium Alloys: The Lowest Elastic Modulus for Biomedical Applications, International Journal of Chemical, Nuclear, Materials and Metallurgical Engineering Vol.8, (2014).
11. Bajenaru-Georgescu D., Ionita D., Prodana M and Demetrescu I., Electrochemical and antibacterial characterization of thermally treated titanium biomaterials, U.P.B. Sci. Bull., Series B, Vol. 77, (2015).
12. Cao J, et al. Welding and Joining of Titanium Aluminides, Materials,(2014)
13. Ramirez J E Mechanical Behavior of Titanium Clad Steel Welded Joints, Welding Journal vol.93(2014).
14. Rontescu C., CicicD.T., VasileI.M., Bogatu A. M.nAmzaC.G., Reconditioning medical prostheses by welding”, ModTech International Conference - Volume 227, Issue 1, pag 413…418, (2017).
15. C. RONTESCU, D.T. CICIC, A.M. BOGATU, C.M. DIJMARESCU, The optimization of the reconditioning possibilities for interlocking intramedullary nail made of titanium alloy, 17th International Multidisciplinary Scientific GeoConference, Vol. 17, Issue 61, pp. 413-418, (2017).
16. ASTM F67–13 2013 Standard Specification for Unalloyed Titanium for Surgical Implant Applications (UNS R50250, UNS R50400, UNS R50550, UNS R50700) (American Society for Testing Materials: West Conshohocken, PA, USA).
17. ASTM F136–13 2013 Standard Specification for Wrought Titanium-6 Aluminum-4 Vanadium, Alloy for Surgical Implant Applications (UNS R56401) (American Society for Testing Materials: West Conshohocken, PA, USA
18. AWS A5.16 Titanium & Titanium-Alloy Welding Electrodes & Rods