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Priority to ES0297825ApriorityCriticalpatent/ES297825A1/en
Publication of ES297825A1publicationCriticalpatent/ES297825A1/en
Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products
(AREA)
Abstract
Process for obtaining casting cores, using synthetic resin as a binder, essentially characterized by the fact that it comprises the following steps: a) mixing the sand with thermosetting type resin, with or without the addition of catalyst, and with or without release agents ; b) blowing or compressing (manually or mechanically) the mixture formed within the core box, which may be of any conventional material; c) then inject hot air at a temperature between 50-500ºC, depending on the formulation or type of resin, depending on the temperature of the hot air from the heat source where it is obtained, and being limited by the material used in the manufacture of the box of cores, and always in such a way that the air yields sufficient heat to the mixture for its polymerization; and d) subsequently demolding the male or noyo, ready for use. (Machine-translation by Google Translate, not legally binding)
ES0297825A1964-03-201964-03-20Procedure for obtaining machines from foundry (Machine-translation by Google Translate, not legally binding)
ExpiredES297825A1
(en)
A procedure for obtaining an agglomer that allows the quick setting, at the will of the foundry noises within their boxes (Machine-translation by Google Translate, not legally binding)
New procedure for obtaining an agglomerate for the manufacture of noyos and molds of foundry (Machine-translation by Google Translate, not legally binding)
Improvement for the manufacture of molding compositions for the formation of machines and molds of foundry. (Machine-translation by Google Translate, not legally binding)