The Research of the Possibilities of Using Purge Methods for the Manufacture of Casting Cores from Mixtures Based on Secondary Polymers and Technical Lignosulphonates

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The work investigated the possibility of using the technical lingo-sulfonate as a binder for the manufacture of small cores by blow-off methods in the production of shaped cast-iron casting, similar to the dominant at the present time Cold-Box-Amin process. It is shown that the advantage of lignin materials is their safety, manifested both in the workplace - directly in the foundry, and in ensuring environmental cleanliness in the area of the location of such production. It is indicated that, when switching to the proposed lignin materials, the price of binders can be reduced by two orders of magnitude. Experimental compositions of mixtures are proposed, and their tests are carried out. The quantitative characteristics of the composition of the sand-oligo-sulfonate mixture are established. As a result, a pilot batch of rods was produced, and high-quality shaped cast iron castings were made. Special attention is paid to the demand to develop the specialized equipment, focused on lignin binders.

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Solid State Phenomena (Volume 299)

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634-640

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January 2020

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© 2020 Trans Tech Publications Ltd. All Rights Reserved

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