Highly thermostable ceramic molds for shaped castings of titanium alloys
Tóm tắt
The questions of applying the organoaluminum and yttrium aluminum binders when fabricating high-thermostable ceramic corundum molds are considered. This technology is a promising direction in the formation of ceramic shell molds for intricately shaped high-duty investment castings made of titanium alloys. The use of silica-free binders, which possess a series of advantages when compared with many currently widespread ones, in casting houses makes it possible to solve many questions associated with the thermochemical stability of ceramic forms, as well as to decrease the volume of finish operations and rejects during casting parts made of chemically active metals and alloys, thereby providing an increase in the quality of exact important castings.
Tài liệu tham khảo
Kulakov, B.A., Dubrovin, V.K., Karpinskii, A.V., Chesnokov, A.A., Castings of intermetallic titanium alloys, Vestn. YuUrGU. Ser. Metall., 2013, vol. 13, no. 1, pp. 51–55.
Glazunov, S.G. and Neustruev, A.A., Proizvodstvo fasonnykh otlivok iz titanovykh splavov (Production of Shaped Castings of Titanium Alloys), Mossow: Mashinostroenie, 1998.
Choi, B-J., Lee, S., and Kim, Y-J., Alpha-case reduction mechanism of titanium powder-added investment molds for titanium casting, J. Mater. Eng. Perform., 2013, pp. 28–36.
Choi, B-J., Lee, S., and Kim, Y-J., Influence of TiO2 on alpha case reaction of Al2O3 mould in Ti investment casting, Mater. Sci. Technol., 2013, vol. 29, no. 12, pp. 1453–1462.
Sung, S.Y. and Kim, Y.J., Alpha-case formation mechanism on titanium investment castings, Mater. Sci. Eng., 2005, vol. 405, pp. 173–177.
Kim, M.G. and Kim, Y.J., Effect of mold material and binder on metal-mold interfacial reaction for investment castings of titanium alloys, Mater. Trans., 2002, vol. 43, no. 4, pp. 745–750. Neto, R.J., Felix, Rui., and Lino, F.J., Optimization of ceramic shells for contact with reactive alloys, Mater. Sci. Forum, 2008, vol. 587–3, pp. 157–161.
Ohkubo, C., Hosoi, T., Ford, J.P., and Watanabe, I., Effect of surface reaction layer on grindability of cast titanium alloys, Dental Mater., 2006, no. 22, pp. 268–274.
Shcherbakova, G.I., Tsirlin, A.M., Storozhenko, P.A., Efimov, N.K., Florina, E.K., Shemaev, B.I., and Murkina, A.S., RF Patent 2 276 155, 2006.
Shcherbakova, G.I., Storozhenko, P.A., Kutinova, N.B., Varfolomeev, M.S., Sidorov, D.V., and Krivtsova, N.S., RF Patent 2451687, 2012.
Moiseev, V.S., Varfolomeev, M.S., Murkina, A.S., and Shcherbakova, G.I., Improving of quality of cast GTE blades, Liteishch. Ross., 2012, no. 5, pp. 36–38.