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Metropolitan Vickers Electrical Co Ltd
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Metropolitan Vickers Electrical Co Ltd
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Publication date
Application filed by Metropolitan Vickers Electrical Co LtdfiledCriticalMetropolitan Vickers Electrical Co Ltd
Publication of ES239514A3publicationCriticalpatent/ES239514A3/en
Precision molding process including the steps of giving a wax model an initial coating, followed by a large number of coatings of a refractory material by immersing said model in said material, said coatings being in such number and of such thickness that a consistent, vapor permeable shell forms, and subject the shell and the model to the action of a hot steam from a solvent of the model wax, with which it is achieved that said steam penetrates the shell and dissolves said model and removing the latter from the shell, at least the initial coating consisting of a material containing a filling of refractory material suspended in a silica sol. (Machine-translation by Google Translate, not legally binding)
ES0239514A1958-08-241958-01-11A precision colada procedure (Machine-translation by Google Translate, not legally binding)
ExpiredES239514A3
(en)