Modern Alphaset (APNB) Flexible Formulations-Enhanced Performance

• Autorzy: Ghosh D. K.

Identyfikatory

DOI

10.24425/afe.2020.133343

• Języki publikacji: EN

Abstrakty

EN

APNB (alkaline phenolic no bake), widely known as Alphaset is one of the major sand binder systems used in foundries to make molds and cores without application of heat or gas. This is a two part system comprising of a phenol-formaldehyde resin in alkaline medium as binder and range of esters of dibasic acids and/or polyhydric alcohols as hardeners. Resin performance varies depending upon formulations. Major variables in formulations are mole ratio of phenol: formaldehyde, total alkali content, ratio of two alkalis (NaOH & KOH) and molecular weight of polymers i.e. chain length. In present work, one mole ratio of phenol & formaldehyde has been chosen to prepare 8 resins [...].

Słowa kluczowe

EN

make molds and cores; sand binder; resin performance; alkaline phenolic no-bake; APNB

PL

wytwarzenie form i rdzeni; spoiwo piaskowe; właściwości żywic; APNB

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2020
• Tom: Vol. 20, iss. 4
• Strony: 18--28
• Opis fizyczny: Bibliogr. 10 poz., tab., wykr.

Twórcy

autor

Ghosh D. K.

• Forace Polymers (P) Ltd., India

Bibliografia

• [1] Regulations (EC) No 1272/2008 of the European Parliament and of the council of 16 December 2008.
• [2] Ghosh, D.K. (2019). Comparison of Molding Sand Technology between Alphaset (APNB) and Furan (FNB). Archives of Foundry Engineering. 19(4). 11-20.
• [3] Trikha, Sudhir, K. (2017). International Publication Number WO 2017/105526 A1. Naperville (US). World Intellectual Property Organization.
• [4] Mhamane, D. A., Rayjadhav, S.B. & Shinde, V.D. (2018). Analysis of chemically bonded sand used for molding in foundry. Asian Journal of Science and Applied Technology. 7(1), 11-16.
• [5] Thiel, J. (2011). Thermal expansion of chemically bonded silica sands. AFS proceedings. 11-116.
• [6] Holtzer, M. (2015). Influence of Reclaim addition to the molding sand matrix obtained in the Alphaset technology on the emission of gases-comparison with molding sand with Furfuryl resin. Archives of Foundry Engineering. 15(1),121-125.
• [7] Łucarz, M., Drożyński, D., Jezierski, J. & Kaczmarczyk, A. (2019). Comparison of properties of Alkali-Phenolic binder in terms of selection sand for steel castings. Materials. 12(22), 3705.
• [8] White, K.B.. (2001). US Patent No US 6,232,368 B1. Schaumburg (US). United States Patent.
• [9] Major-Gabryś, K. et al. (2009). A new ester hardener for molding sands with water glass having slower activity. Archives of Foundry Engineering. 9(4), 125-128.
• [10] Stevenson, J., Machin, J., Dyke, D.L. (1983). U.S. Patent No. US 4,416,694. England. United States Patent.