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182 条记录 (耗时 0.014 秒)

    Compound roll and method of producing same
    121.
    发明授权
    Compound roll and method of producing same 失效
    复合辊及其制造方法

    公开(公告)号：US5484372A

    公开(公告)日：1996-01-16

    申请号：US267718

    申请日：1994-08-11

    申请人： Ryosaku Nawata ,  Kenji Date ,  Toshiyuki Hattori

    发明人： Ryosaku Nawata ,  Kenji Date ,  Toshiyuki Hattori

    IPC分类号： B21B27/00 ,  B22D13/02 ,  B22D19/16 ,  B32B15/01

    CPC分类号： B21B27/00 ,  B22D13/02 ,  B22D19/16 ,  B32B15/011 ,  Y10T29/49563

    摘要： The compound roll having a shell portion made of a hard, high-alloy cast steel or iron having excellent wear resistance and resistance to surface roughening and a core portion made of a tough cast iron or cast steel, the cast iron of the shell portion having a composition consisting essentially, by weight ratio, of 1.0-3.0% of C, 2.0% or less of Si, 2.0% or less of Mn, 2.0-15.0% of Cr, 10.0% or less of Mo, 2.0-8.0% of V, the balance being substantially Fe and inevitable impurities, an average diameter of crystal grains constituting a matrix of the metal structure of the shell portion being 100 .mu.m or less in a range from a surface to a depth of 50 mm when determined by an image analysis method on the crystal grains having diameters exceeding 30 .mu.m, and the crystal grains satisfying the formula: m.sub.2 .ltoreq.1.2 m.sub.1, wherein m.sub.1 is an average diameter of the crystal grains at the surface of the shell portion, and m.sub.2 is an average diameter of the crystal grains at the depth of 50 mm, is produced by a centrifugal casting method which comprises supplying a melt for the shell portion at a temperature T satisfying the formula: Tc.ltoreq.T.ltoreq.Tc+90.degree. C., wherein Tc is a primary crystal-forming temperature of the melt for the shell portion, to a hollow cylindrical mold rotatable around its longitudinal axis, at such a speed that an average shell portion-forming speed in the mold is 2-40 mm/min.

    摘要翻译： 复合辊具有由硬质，高合金铸钢或具有优异的耐磨性和耐表面粗糙度的铁制成的外壳部分和由韧性铸铁或铸钢制成的芯部，所述壳体部分的铸铁具有 基本上由重量比组成的C：1.0-3.0％，Si 2.0％或更少，Mn 2.0％或更少，2.0-15.0％的Cr，10.0％或更少的Mo，2.0-8.0％的 V，余量基本上为Fe和不可避免的杂质，构成壳部分的金属结构的基体的晶粒的平均直径在从表面到深度50mm的范围内为100μm以下，当由 对具有超过30μm的晶粒的图像分析方法，并且满足以下公式的晶粒：m2 <= 1.2m1，其中m1是壳部表面的晶粒的平均直径，m2是 产生在深度为50mm的晶粒的平均直径 d，其中包括在满足以下公式的温度T下为壳部分供应熔体：Tc

    Method for high vacuum casting
    122.
    发明授权
    Method for high vacuum casting 失效
    高真空铸造方法

    公开(公告)号：US4558729A

    公开(公告)日：1985-12-17

    申请号：US570176

    申请日：1984-01-12

    申请人： Charles d'A. Hunt

    发明人： Charles d'A. Hunt

    IPC分类号： B22D11/04 ,  B22D7/00 ,  B22D7/10 ,  B22D11/041 ,  B22D13/02 ,  B22D21/06 ,  B22D27/15

    CPC分类号： B22D7/10 ,  B22D13/02

    摘要： Method and apparatus for producing a fine-grain ingot are disclosed. A feedstock stick is melted to produce a series of fully molten drops which falls on the upper surface of an ingot being formed, to cover a portion thereof which is substantially less than the ingot's total upper surface. The mold is moved laterally with respect to the feedstock stick at a rate which is high enough so that the molten metal impinges upon different portions of the ingot's upper surface but which is low enough to prevent a substantial centrifugally outward flow of the metal impinging on the upper surface of the ingot. The molten metal melt rate is so selected that the impact region on the ingot's upper surface is at or below the solidus temperature of the alloy and above a temperature at which metallurgical bonding with the successive impinging metal can occur.

    摘要翻译： 公开了一种生产细晶锭的方法和装置。 原料棒被熔化以产生一系列完全熔融的液滴，其落在正在形成的锭的上表面上，以覆盖其基本上小于锭的总上表面的部分。 模具以足够高的速率相对于原料棒横向移动，使得熔融金属撞击锭的上表面的不同部分，但足够低以防止金属的大量离心向外流动撞击在 锭的上表面。 熔融金属熔体速率被选择成使得锭的上表面上的冲击区域处于等于或低于合金的固相线温度并且高于可以发生与连续冲击金属的冶金结合的温度。

    Method of centrifugally casting a metal tube
    123.
    发明授权
    Method of centrifugally casting a metal tube 失效
    离心铸造金属管的方法

    公开(公告)号：US4377196A

    公开(公告)日：1983-03-22

    申请号：US303720

    申请日：1981-09-21

    申请人： Igor Y. Khandros

    发明人： Igor Y. Khandros

    IPC分类号： B22D13/02 ,  B22D19/16 ,  B22D21/02

    CPC分类号： B22D19/16 ,  B22D13/02

    摘要： A centrifugal casting high in an easily oxidized element achieved by casting a high melting point metal on to an easily oxidized metal of lower melting point. The desirable distribution of the oxidizable element through the cross section of a casting is achieved relying on the basic effect of centrifugal separation.

    摘要翻译： 通过将高熔点金属浇铸到较低熔点的易氧化金属上而实现的易于氧化元件的离心铸造。 根据离心分离的基本作用，可以通过铸件的横截面实现可氧化元件的理想分布。

    Centrifugal casting method
    124.
    发明授权
    Centrifugal casting method 失效
    离心铸造法

    公开(公告)号：US3863702A

    公开(公告)日：1975-02-04

    申请号：US32310473

    申请日：1973-01-12

    申请人： CABOT CORP

    发明人： HALLERBERG WILLIAM L ,  GORDON GILBERT W

    IPC分类号： B22D13/10 ,  B22D11/111 ,  B22D13/02 ,  B22D13/00

    CPC分类号： B22D13/02 ,  B22D11/111

    摘要： A method of centrifugally casting hollow metal objects is provided in which molten self-disintegrating slag is added to the rotating mold immediately after casting molten metal and transform in the solid state giving a volume change which causes the slag to disintegrate therein.

    摘要翻译： 提供了一种离心铸造中空金属物体的方法，其中在浇铸熔融金属之后立即将熔融的自分解渣添加到旋转模具中，并以固态转化，产生使炉渣在其中分解的体积变化。