GRAY IRON COMPOSITION AND BRAKE COMPONENTS FORMED THEREOF
    72.
    发明申请
    GRAY IRON COMPOSITION AND BRAKE COMPONENTS FORMED THEREOF 审中-公开
    灰色组合物及其制成的组分

    公开(公告)号:WO1998028456A1

    公开(公告)日:1998-07-02

    申请号:PCT/US1997023339

    申请日:1997-12-18

    CPC classification number: C22C37/06 F16D2065/132

    Abstract: Improved gray iron compositions comprise at least about 90 weight % iron, at least about 3.40 weight % carbon, from about 1 to 2.5 weight % silicon, from about 0.4 to 1.0 weight % manganese, and from about 0.02 to 0.07 weight % tin. Preferably, the gray iron compositions of the invention also include from about 0.2 to about 0.5 weight % chromium, and may further preferably include from about 0.25 to 0.75 % molybdenum and/or from about 0.3 to 1.0 % copper, and may optionally also include small amounts (less than about 1 %) of such elements as titanium or vanadium, as examples. The gray iron compositions may advantageously be used in the manufacture of vehicle brake components, especially the braking surfaces of vehicle brake drums (10) or brake rotors.

    Abstract translation: 改进的灰铁组合物包含至少约90重量%的铁,至少约3.40重量%的碳,约1至2.5重量%的硅,约0.4至1.0重量%的锰和约0.02至0.07重量%的锡。 优选地,本发明的灰铁组合物还包括约0.2至约0.5重量%的铬,并且还可以进一步优选包括约0.25至0.75重量%的钼和/或约0.3至1.0重量%的铜,并且还可任选地包括小的 例如钛或钒等元素(小于约1%)。 灰铁组合物可有利地用于制造车辆制动部件,特别是车辆制动鼓(10)或制动转子的制动表面。

    CLADDING MATERIAL FOR CENTRIFUGAL CASTING ROLL
    73.
    发明申请
    CLADDING MATERIAL FOR CENTRIFUGAL CASTING ROLL 审中-公开
    离心铸造辊用粘合材料

    公开(公告)号:WO1996027688A1

    公开(公告)日:1996-09-12

    申请号:PCT/JP1996000544

    申请日:1996-03-06

    CPC classification number: C22C37/06 B21B27/00

    Abstract: A cladding material for centrifugal casting rolls which contains 2.5-4.7 % C, 0.8-3.2 % Si, 0.1-2.0 % Mn, 0.4-1.9 % Cr, 0.6-5 % Mo, 3.0-10.0 % V, and 0.6-7.0 % Nb, these elements satisfying the following relationships (1) to (4): (1) 2.0 + 0.15V + 0.10Nb

    Abstract translation: 一种用于离心铸造辊的包覆材料,其包含2.5-4.7%C,0.8-3.2%Si,0.1-2.0%Mn,0.4-1.9%Cr,0.6-5%Mo,3.0-10.0%V和0.6-7.0% Nb,这些元素满足以下关系式(1)〜(4):(1)2.0 + 0.15V + 0.10Nb

    HARDFACED DRILLING TOOL JOINTS
    74.
    发明申请
    HARDFACED DRILLING TOOL JOINTS 审中-公开
    硬化钻孔接头

    公开(公告)号:WO1992019783A1

    公开(公告)日:1992-11-12

    申请号:PCT/US1992003661

    申请日:1992-05-01

    CPC classification number: E21B17/1085 C22C37/06

    Abstract: Disclosed are methods of hardfacing and hardfaced tool joints used for connecting together dirlling pipe for drilling bore holes in the earth, such as drilling to possible oil and gas formations. The hardfacing (24) is welded to the outer surface of the box member (12) of the tool joint and forms a surface harder than silicious earth particles but a surface which does not cut casing through which the drilling pipe (14) and tool joints move. Hardfacing alloys having the foregoing properties contain primary carbides in a matrix which are present in an amount to form a plurality of cracks of not less than one in 3 inches on cooling from molten to solid state are satisfactory. Such cracking causes no damage to the box member (12), provides an indication of the primary carbides present and hence the abrasion resistance of the hardfacing (24) and provides a long wearing service life for the box member (12).

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