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Application filed by Institutul De Cercetari MetalurgicefiledCriticalInstitutul De Cercetari Metalurgice
Priority to RO1988132323ApriorityCriticalpatent/RO101263A2/en
Publication of RO101263B1publicationCriticalpatent/RO101263B1/en
Publication of RO101263A2publicationCriticalpatent/RO101263A2/en
Molds, Cores, And Manufacturing Methods Thereof
(AREA)
Mold Materials And Core Materials
(AREA)
Abstract
Inventia se refera la un miez fuzibil destinat turnarii pieselor cu cavitati complexe care necesita precizie ridicata. Miezul, conform inventiei, este constituit dintr-un aliaj usor fuzibil de tip Pb-Sn, sau Pb-Sn-Sb, si are la suprafata un strat de protectie termica ce poate fi o vopsea refractara sau un oxid superficial obtinut prin anodare. Acest miez permite marirea preciziei dimensionale a pieselor precum si reducerea consumului de materiale.The invention relates to a fusible core for casting of complex cavity pieces requiring high precision. The core according to the invention consists of a light-fusible alloy of the Pb-Sn type, or Pb-Sn-Sb, and has a thermal protection layer which can be a refractory paint or superficial oxide obtained by anode. This core allows for increased dimensional accuracy of parts and reduced material consumption.
PROCEDURE FOR THE FORMATION OF A PROTECTIVE LAYER ON METALLIC COMPONENTS, IN PARTICULAR SHAPES OR MOLDS FOR THE PRODUCTION OF GLASS ITEMS, AND FORMS IN PARTICULAR FOR GLASSWARE, PROTECTED AGAINST CORROSION, THROUGH THAT PROCEDURE