Research of the liquid‑glass HTS compositions with sand of the Novinsky deposit. Message 1.

The article is devoted to the selection of optimal parameters of a chemically hardening mixture based on quartz sand with a liquid‑glass binder cured with liquid esters for the production of castings of heavy machinery, machine tools and shut‑off valves. The analysis of the quality of molding sands of three brands, of different origin, was carried out. The strength characteristics of mixtures of various compositions are studied. Based on the data obtained, conclusions are drawn about the optimal characteristics of sand and the amount of binder additive. The compositions of easily knocked‑out environmentally friendly liquid‑glass mixtures cured with esters for the manufacture of molds and rods in machine‑tool armature construction are recommended.

1. Tkachenko S. S., Krivickij V. S. Potencial litejnogo proizvodstva Sankt – Peterburga i Leningradskoj oblasti [The potential of the foundry production of St. Petersburg and the Leningrad region]. Sbornik trudov mezhdunarodnoj nauchno‑tehnicheskoj konferencii “Litejnoe proizvodstvo segodnja i zavtra”, SanktPeterbug 2016 g.= Collection of proceedings of the international scientific and technical conference “Foundry today and tomorrow”, St. Petersburg 2016.

2. Zhukovskij S. S. Tehnologija litejnogo proizvodstva: formovochnye i sterzhnevye smesi [Foundry technology: molding and core sands]. Brjansk: Izdatel’stvo BGTU Publ., 2002, 469 p.

3. Zhukovskij S. S. Holodnotverdejushhie svjazujushhie i smesi dlja litejnyh sterzhnej i form [Cold hardening binders and mixtures for foundry cores and molds]. Moscow, Mashinostroenie Publ., 2010, 255 p.

4. Illarionov I. E., Pestrjaeva G. Sh., Sadetdinov Sh. V., Strel’nikov I.A. Vlijanie metaboratov litija, natrija i kalija na svojstva fosfatnyh holodnotverdejushhih smesej [Influence of lithium, sodium and potassium metaborates on the properties of phosphate cold‑hardening mixtures]. Litejnoe proizvodstvo = Foundry, 2019, no. 12.

5. Semjonov A.A., Bedrin N. I., Kuznecov V. G., Odinokova S. E., Denisova L. N. Osvoenie holodnotverdejushhih smesej na OAO «Oskol’skij zavod metallurgicheskogo mashinostroenija» [Development of cold‑hardening mixtures at JSC “Oskol plant of metallurgical engineering”]. Litejnoe proizvodstvo = Foundry, 2004, no. 5.

6. Kurakevich B. V., Mileeva T. S. Sovremennye svjazujushhie kompozicii dlja holodnotverdejushhih form i sterzhnej [Modern binder compositions for cold hardening molds and cores]. Litejnoe proizvodstvo = Foundry, 2005.

7. Zhukovskij S. S., Kaftannikov A. S. Primenenie holodnotverdejushhih smesej, primenjaemyh na predprijatijah Rossii [The use of cold‑hardening mixtures used at Russian enterprises]. Litejshhik Rossii = Russian Foundrymen, 2004, no. 10.