Whirlpool S.a.

Universidade Federal De Santa Catarina (ufsc)

Lupatech S.a.

Embraco-industria De Compressores E Solucoes Em Refrigeracao, Ltda.

Moises Luiz Parucker

Aloisio Nelmo Klein

Cristiano Binder

Roberto Binder

Gisele Hammes

Waldyr Ristow Junior

The metallurgical composition comprises a main particulate metallic material, for example iron or nickel, and at least one alloy element for hardening the main metallic material, which form a structural matrix; a particulate solid lubricant, such as graphite, hexagonal boron nitride or mixture thereof; and a particulate alloy element which is capable of forming, during the sintering of the composition conformed by compaction or by injection molding, a liquid phase, agglomerating the solid lubricant in discrete particles. The composition may comprise an alloy component to stabilize the alpha-iron matrix phase, during the sintering, in order to prevent the graphite solid lubricant from being solubilized in the iron. The invention further refers to the process for obtaining a self-lubricating sintered product.

Composition of particulate materials and process for obtaining self-lubricating sintered products

The metallurgical composition includes a main particulate metallic material, for example iron or nickel, and at least one alloy element for hardening the main metallic material, which form a structural matrix; a particulate solid lubricant, such as graphite, hexagonal boron nitride or mixture thereof; and a particulate alloy element which is capable of forming, during the sintering of the composition conformed by compaction or by injection molding, a liquid phase, agglomerating the solid lubricant in discrete particles. The composition may include an alloy component to stabilize the alpha-iron matrix phase, during the sintering, in order to prevent the graphite solid lubricant from being solubilized in the iron. The invention further refers to a self-lubricating sintered product, obtained from the composition, and to the process for obtaining said product.

Metallurgical composition of particulate materials, self-lubricating sintered products and process for obtaining self-lubricating sintered products

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Moises Luiz Parucker