Development of Water-Soluble Composite Salt Sand Cores Made by a Hot-Pressed Sintering Process

• Autorzy: Yang Xiaona , Zhang Long , Jin Xin , Hong Jun , Ran Songlin , Zhou Fei

Identyfikatory

DOI

10.24425/afe.2023.146662

• Języki publikacji: EN

Abstrakty

EN

A wide variety of water-soluble cores are widely used in hollow composite castings with internal cavities, curved channels, and undercuts. Among them, the cores made by adding binders of inorganic salts in the form of aqueous solutions have excellent solubility in water. However, excellent collapsibility is often accompanied by poor moisture absorption resistance. In this study, a water-soluble core with moderate strength and moisture absorption resistance was prepared by hot pressing and sintering the core sand mixture of sand, bentonite, and composite salts, and a tee tube specimen was cast. The experimental results showed that the cores with KCl-K₂CO₃ as binder could obtain strength of more than 0.9 MPa and still maintain 0.3 MPa at 80±5% relative humidity for 6 hours; the subsequent sintering process can significantly improve the resistance to moisture absorption of the hot pressed cores (0.6 MPa after 24 hours of storage at 85±5% relative humidity); the water-soluble core prepared by the post-treatment can be used to cast tee pipe castings with a smooth inner surface and no porosity defects, and it is easy to remove the core.

Słowa kluczowe

EN

water-soluble cores; hollow composite castings; salt cores; collapsibility

PL

odlewy kompozytowe; rdzenie rozpuszczalne; spoiwa nieorganiczne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2023
• Tom: Vol. 23, iss. 3
• Strony: 51--58
• Opis fizyczny: Bibnliogr. 16 poz., il., rys., wykr., tab.

Twórcy

autor

Yang Xiaona

• School of Metallurgical Engineering, Anhui University of Technology, China

autor

Zhang Long

• School of Metallurgical Engineering, Anhui University of Technology, China

autor

Jin Xin

• Anhui University of Technology, Laboratory of Metallurgical Engineering & Resources Recycling, China

autor

Hong Jun

• Technical Department, Anhui Highly Precision Casting Co., Ltd, China

autor

Ran Songlin

• Anhui University of Technology, Laboratory of Metallurgical Engineering & Resources Recycling, China

autor

Zhou Fei

• Technical Department, Anhui Highly Precision Casting Co., Ltd, China

Bibliografia

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• [13] Liu, F., Jiang, P., Huang, Y., Jiang, W., Liu, X. & Fan, Z. (2018). A water-soluble magnesium sulfate bonded sand core material for manufacturing hollow composite castings. Composite Structures. 201, 553-560. DOI:10.1016/j.compstruct.2018.06.084.
• [14] Zhang, L., Li, Y. & Chen, Q. (2011). Optimization of the mixture design of the fomula for water-soluble cores. Journal of Huazhong University of Science and Technology (Natural Science Edition). 39(3), 6-9.
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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024)