Study on the Technological Adaptability of the Reclaimed Sand Applied in the Chemical Bonded Sand

Abstract:

The technological adaptability of the reclaimed sand applied in the chemical bonded sand was studied in this paper. The reclaimed sand can be obtained by the process of high-temperature baking followed by mechanical reclamation and separation of micro-powder. The reclaimed green sand which containing different types of chemical bonded core sand were applied in corresponding system of chemical bonded sand process, such as the process of cold-box sand, hot-box sand, precoated sand, sodium silicate sand and self-hardening sand. Through technological experiments, it can be found that the tensile strength value of the precoated sand and sodium silicate sand which were prepared using reclaimed sand can be equal or slightly higher than that of prepared using the base sand, the tensile strength value of the cold-box sand, the hot-box sand and the self-hardening sand which was prepared using the reclaimed sand are lower than that of prepared using the base sand. Compared with the chemical bonded sand requirements in the foundry practice, the cold-box sand, the hot-box sand, the precoated sand which was prepared using the reclaimed sand can still meet the casting process needs, but the self-hardening sand which was prepared using the reclaimed sand cannot meet the casting process needs.

• Periodical: Advanced Materials Research (Volumes 139-141)
• Pages: 524-527
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.139-141.524
• Online since: October 2010
• Authors: Qing Zhou Sun, Rong Fu Xu, Zhong Kui Zhao, Pu Qing Zhang, Wei Liu
• Keywords: Chemical Bonded Sand, Reclaimed Sand, Technological Adaptability

References

[1] American Foundrymen's Society. Final Report (Phase I) prepared by American Foundrymen's Society Inc. for Illinois Department of Commerce and Community Affairs, Des Plaines, Illinois, July, (1991).

DOI: 10.2172/10107010

[2] Granlund M J and Silsby D. Transactions of the American Foundrymen's Society, 1983, 91, pp.101-108.

[3] Leidel, D S. Transactions of the American Foundrymen's Society, 1983, 91, pp.303-312.

[4] Oehlerking T H. Giesserei (in Germany), 1993, 80(21), pp.721-728.

[5] Kucharczyk J W and Leidel D S. Transactions of the American Foundrymen's Society, 1989, pp.13-20.