MANUFACTURE OF SUBMICRON CEMENTED CARBIDE TOOL INSERT

    公开(公告)号:JPH11286734A

    公开(公告)日:1999-10-19

    申请号:JP4107099

    申请日:1999-02-19

    Applicant: SECO TOOLS AB

    Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a submicron cemented carbide cutting tool insert consisting of tungsten carbide and cobalt by the conventional process comprising a stage of subjecting a powder mixture of WC, Co, and a conventional grain growth inhibitor to wet-kneading to form a slurry, a stage of drying the slurry into powder, a stage of subjecting the powder to uniaxial pressing in a pressing tool to form an article of desired shape, and finally a stage of sintering. SOLUTION: At the time of the sintering stage, a cemented carbide insert of this kind tends to shrink usually in a direction parallel to the pressing direction rather than in a direction perpendicular to the pressing direction. As the result, the pressing requires a special tool or requires, after sintering of the insert, long-time grinding which causes a raise in manufacturing costs. In this method, with respect to a cemented carbide of 7.5 to 25 wt.% Co content, such defect can be removed by using a WC powder having an FSSS grain size dWC of less than 1 μm and a Co powder having an FSSS grain size dCo satisfying the condition that the value of dWC/dCo becomes 0.75-1.5.

    CEMENTED CARBIDE AND ITS PRODUCTION

    公开(公告)号:JP2000219931A

    公开(公告)日:2000-08-08

    申请号:JP2000022971

    申请日:2000-01-31

    Applicant: SECO TOOLS AB

    Abstract: PROBLEM TO BE SOLVED: To provide a hard material based on submicron WC in a bonding phase having hardenability. SOLUTION: In cemented carbide in which a bonding phase having hardenability is incorporated with 50 to 90 mass % submicron WC, the bonding phase is composed of Fe, 10 to 60 mass % Co,

    CEMENTED CARBIDE BODY AND METHOD FOR MANUFACTURING THE CEMENTED CARBIDE BODY
    4.
    发明申请
    CEMENTED CARBIDE BODY AND METHOD FOR MANUFACTURING THE CEMENTED CARBIDE BODY 审中-公开
    硬质合金体及制造硬质合金体的方法

    公开(公告)号:WO2013143686A3

    公开(公告)日:2013-11-21

    申请号:PCT/EP2013000905

    申请日:2013-03-26

    Applicant: SECO TOOLS AB

    Abstract: A method for manufacturing a cemented carbide body (1), comprising the following steps: - forming a first part (2, 9, 14, 17) of a first powder composition comprising a first carbide and a first binder phase, - sintering the first part (2) to full density in a first sintering operation, - forming a second part (3) of a second powder composition comprising a second carbide and a second binder phase, - sintering the second part (3) to full density in a second sintering operation, - bringing a first surface (4) of the first part (2) and a second surface (5) of the second part (3) in contact, and - joining the first and second surface in a heat treatment operation.

    Abstract translation: 一种用于制造硬质合金体(1)的方法,包括以下步骤: - 形成包含第一碳化物和第一粘结相的第一粉末组合物的第一部分(2,9,14,17), - 将第一部分 在第一烧结操作中使部分(2)达到全密度, - 形成包含第二碳化物和第二粘结剂相的第二粉末组合物的第二部分(3), - 将第二部分(3)烧结至第二部分 烧结操作, - 使第一部件(2)的第一表面(4)和第二部件(3)的第二表面(5)接触,以及 - 在热处理操作中连接第一和第二表面。

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