Improved Mechanical Properties of Casting Made by New LPIC Technology

• Autorzy: Vrátný O. , Herman Ales , Novák V. , Chytka P. , Jarkovský M. , Kopanica Z. , Zeman J.

Identyfikatory

DOI

10.24425/afe.2024.151296

• Języki publikacji: EN

Abstrakty

EN

Nowadays, the emphasis is on improving the integrity of precision castings of Fe, Ni and Co alloys (improving the mechanical properties of the material and increasing process efficiency) more than ever before. For this reason, a technology has been developed which is a combination of low-pressure casting and investment casting. The premise of the combination of these technologies is that a high degree of automation should be achieved, based on low-pressure casting, while bottom filling will reduce reoxidation phenomena during filling. Mainly due to the higher purity of the melt, higher values of mechanical properties in conjunction with shape and geometric accuracy are expected, which guarantees the investment casting. For this purpose, an experimental casting machine has been designed, which is a combination of these two technologies, where we are able to eliminate the disadvantages of low-pressure casting, which include, for example, the low variability of the usable materials, as well as the disadvantages of investment casting, which include the low automation of the process. Using an experimental machine, tensile and impact test samples were cast and subsequently tested. From the initial experiments, it can be said that using this technology we are able to cast materials based on Fe alloys, Ni alloys and Co alloys with mechanical property values that are even close to or within the range of mechanical properties of the formed materials. As a result, the mechanical properties of castings cast by the LPIC method are shown to be tougher and stronger.

Słowa kluczowe

EN

mechanical properties of casting; innovative technologies; Low Pressure Investment Casting; LPIC; casting integrity

PL

właściwości mechaniczne odlewu; technologie innowacyjne; odlewanie precyzyjne niskociśnieniowe; integralność odlewu

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2024
• Tom: Vol. 24, iss. 3
• Strony: 88--93
• Opis fizyczny: Bibliogr. 13 poz., fot., tab.

Twórcy

autor

Vrátný O.

• Czech Technical University in Prague, Faculty of Mechanical Engineering, Czech Republic

autor

Herman Ales

• Czech Technical University in Prague, Faculty of Mechanical Engineering, Czech Republic

• https://orcid.org/000-0002-5598-4591

autor

Novák V.

• Czech Technical University in Prague, Faculty of Mechanical Engineering, Czech Republic

• https://orcid.org/0000-0002-0867-5964

autor

Chytka P.

• Czech Technical University in Prague, Faculty of Mechanical Engineering, Czech Republic

autor

Jarkovský M.

• Czech Technical University in Prague, Faculty of Mechanical Engineering, Czech Republic

• https://orcid.org/0000-0002-0485-4551

autor

Kopanica Z.

• Czech Technical University in Prague, Faculty of Mechanical Engineering, Czech Republic

• https://orcid.org/0009-0001-1199-2354

autor

Zeman J.

• Czech Technical University in Prague, Faculty of Mechanical Engineering, Czech Republic

• https://orcid.org//0000-0002-8151-6193

Bibliografia

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• [5] Hockin, J. (1972). Investment casting of superalloys. Retrieved April 22, 2024, from http://www.tms.org/superalloys/10.7449/1972/Superalloys_1 972_C-1_C-9.pdf.
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• [12] Naoya, O. & Saito, S. (2020). Characterization of mechanical strain induced by lead-bismuth eutectic (LBE) freezing in stainless steel cup. Heliyon. 6(2), e03429, 1-8. DOI: 10.1016/j.heliyon.2020.e03429.
• [13] Jiang, W., Fan, Z., Liao, D., Dong, X. & Zhao, Z. (2010). A new shell casting process based on expendable pattern with vacuum and low-pressure casting for aluminum and magnesium alloys. The International Journal of Advanced Manufacturing Technology. 51(1-4), 25-34. DOI: 10.1007/s00170-010-2596-4.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025)