Brittle formed product and iron-based power material and method for manufacturing these materials
AssigneeKoyo Seiko Co., Ltd.
InventorsMasataka Ishihara, Akio Maemoto, Mitsuma Matsuda, Yoshihiro Seo, Shouichi Kashino
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Abstract
Cotton-like aggregates (B) including grinding chips from an iron-based metal and a grinding fluid containing oil and water are compression molded for forming a brittle compact (C) having the fibrous grinding chips roughly sheared and excessive water and oil removed therefrom. The brittle compact (C) is crushed for further finely shearing the grinding chips and the resultant grinding chips are mixed with a solidification assistant (D) for producing an iron-based powder material (E) containing the solidification assistant (D).
Claims30
A brittle compact formed by compression molding cotton-like aggregates into a predetermined shape, said cotton-like aggregates including grinding chips from an iron-based metal, and a grinding fluid containing oil and water.
A method for producing a brittle compact wherein cotton-like aggregates including grinding chips from an iron-based metal and a grinding fluid containing oil and water are compression molded thereby forming a brittle compact of a predetermined shape in which the fibrous grinding chips are sheared and excessive water and oil are removed.
An iron-based powder material comprising iron-based powder and oil, the powder material produced by crushing a brittle compact formed by compression molding cotton-like aggregates including grinding chips from an iron-based metal and a grinding fluid containing oil and water.
A method for producing an iron-based powder material comprising the steps of:
- compression molding cotton-like aggregates including grinding chips from an iron-based metal and a grinding fluid containing oil and water thereby forming a brittle compact having the fibrous grinding chips roughly sheared and excessive water and oil removed therefrom;
- and crushing the brittle compact for further finely shearing the grinding chips thereby producing the powder material containing the iron-based powder and oil.
Dependencies are inferred from the claim text.