Loading patent…
AssigneeKomatsu Ltd.
InventorsTakemori Takayama, Kazuo Okamura, Yoshikiyo Tanaka, Tetsuo Ohnishi
Estimating the term…
A wear-resistant iron-based sintered contact material is provided which is sintered by powder sintering so as to have high density, high seizure resistance and wear resistance. A wear-resistant iron-based sintered composite contact component composed of the wear-resistant iron-based sintered contact material sinter-bonded to a backing metal and its producing method are also provided. To this end, at least Cr7C3-type carbide and/or M6C-type carbide which have an average particle diameter of 5 μm or more are precipitately dispersed in an amount of 20 to 50% by volume within an iron-based martensite parent phase which has a hardness of HRC 50 or more even when tempered at up to 600° C.
A wear-resistant sintered composite contact component comprising a wear-resistant sintered contact material, which is sinter-bonded to an iron-based backing metal member, said wear resistant sintered contact material comprising at least one of Cr7C3 or M6C carbides or both (M being an alloy element) which have an average particle diameter of 5 μm or more that are precipitately dispersed in an amount of 20 to 50% by volume within an iron-based martensite parent phase which has a hardness of HRC 50 or more even when tempered at up to 600° C.
Dependencies are inferred from the claim text.