Whirlpool S.a.

Universidade Federal De Santa Catarina (ufsc)

Lupatech S.a.

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

Universidade Federal De Santa Catarina

Waldyr Ristow Junior

Aloisio Nelmo Klein

Cristiano Binder

Roberto Binder

Gisele Hammes

Moises Luiz Parucker

Moisés Luiz Parucker

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

Growing community of inventors

Caxias do Sul, Brazil

Waldyr Ristow Junior