GAS ATOMIZER
    1.
    发明申请
    GAS ATOMIZER 审中-公开

    公开(公告)号:WO2023275674A1

    公开(公告)日:2023-01-05

    申请号:PCT/IB2022/055785

    申请日:2022-06-22

    Applicant: ARCELORMITTAL

    Abstract: The invention relates to a process for manufacturing metal powders comprising: i) feeding an atomization chamber of a gas atomizer with molten metal, (ii) atomizing the molten metal by injection of gas so as to form metal particles, (iii) transferring the metal particles from the atomization chamber to a cooling chamber of the gas atomizer, (iv) cooling the metal particles in the cooling chamber by injecting gas from the bottom of the cooling chamber so as to form a bubbling fluidized bed of metal particles. The invention also relates to the gas atomizer thereof.

    COMPOSITE WEAR COMPONENT
    9.
    发明申请

    公开(公告)号:WO2021191199A1

    公开(公告)日:2021-09-30

    申请号:PCT/EP2021/057409

    申请日:2021-03-23

    Abstract: The present invention discloses a hierarchical composite wear component comprising a reinforcement in the most exposed part to wear, the reinforcement comprising a three-dimensionally interconnected network of periodically alternating millimetric ceramic-metal composite granules with millimetric interstices, said ceramic-metal composite granules comprising at least 52 vol%, preferably at least 61 vol%, more preferably at least 70 vol% of micrometric particles of titanium carbide embedded in a first metal matrix, the ceramic-metal composite granules having a density of at least 4.8 g/cm³, the three-dimensionally interconnected network of ceramic-metal composite granules with its millimetric interstices being embedded in the second metal matrix, said reinforcement comprising in average at least 23 vol%, more preferably at least 28 vol%, most preferably at least 30 vol% of titanium carbide, the first metal matrix being different from the second metal matrix, the second metal matrix comprising the ferrous cast alloy.

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