Filtering flow guide for hydrothermal crystal growth
    2.
    发明授权
    Filtering flow guide for hydrothermal crystal growth 失效
    水热晶体生长过滤流程图

    公开(公告)号:US5456204A

    公开(公告)日:1995-10-10

    申请号:US69040

    申请日:1993-05-28

    IPC分类号: C30B7/10 C30B7/00 C30B29/18

    摘要: The present invention is a filtering flow guide for hydrothermal reaction vessels--such as crystal growth apparatus--which improves crystal production efficiency and crystal quality without significantly slowing down flow velocities or crystal growth times. One embodiment of the flow guide fits inside a conventional hydrothermal autoclave for crystal growth, and includes at least one central inlet conduit by which crystal nutrient solution flows from the autoclave's dissolving zone into its growth chamber. A plurality of funnels encircle the inlet conduit, the funnels contiguous with each other along their lateral edges and with the inlet conduit's intake opening at the funnels' innermost edges. Each funnel may be substantially shaped as a hollow, inverted triangular pyramid with a nadir instead of an apex, the nadir opening into a filter-containing outlet. The inlet conduit, plurality of funnels and outlet tubes guide the flow of crystal nutrient solution optimally through the autoclave's dissolving and growth chambers, producing an even flow rate and pattern, and reducing wasteful crystal deposition. The inlet conduit, the funnels, or both elements, may further include optional filters positioned to enhance convective solution flow with minimal flow impedance. The flow guide thereby also filters out contaminants, producing high-purity, high-perfection crystals.

    摘要翻译: 本发明是一种用于水热反应容器的过滤流程图,例如晶体生长装置,其提高晶体生产效率和晶体质量,而不会明显地减慢流速或晶体生长时间。 流动导管的一个实施例适用于用于晶体生长的常规水热高压釜,并且包括至少一个中心入口导管,晶体营养液通过该入口导管从高压釜的溶解区流入其生长室。 多个漏斗围绕入口管道,漏斗沿其侧边缘彼此连续,并且入口导管的入口开口处于漏斗的最内边缘。 每个漏斗可以基本上成形为具有天底而不是顶点的中空的倒三角锥,最底部开口进入含过滤器的出口。 入口管道,多个漏斗和出口管通过高压釜的溶解和生长室最佳地引导晶体营养溶液的流动,产生均匀的流速和图案,并减少浪费的晶体沉积。 入口管道,漏斗或两个元件还可以包括可选的过滤器,定位成以最小的流动阻抗来增强对流溶液流。 因此,流动导向器还可以过滤掉污染物,产生高纯度,高完美的晶体。

    Processes for producing fine grained metal compositions using continuous
extrusion for semi-solid forming of shaped articles
    3.
    发明授权
    Processes for producing fine grained metal compositions using continuous extrusion for semi-solid forming of shaped articles 失效
    使用连续挤出成型制品的半固体成型生产细粒金属组合物的方法

    公开(公告)号:US6120625A

    公开(公告)日:2000-09-19

    申请号:US95217

    申请日:1998-06-10

    摘要: There are provided a continuous frictional extrusion process for continuously producing a deformed fine grain solid metal composition suitable for semi-solid forming. The process is featured by a large range of produce dimension and by precise control of the process parameter, such as total deformation, extrusion temperature and speed. The total deformation is controlled to be larger than a Mises effective strain of 2.3 to obtain a deformed fine grain structure with enough distortion energy stored, having a grain size less than 30 .mu.m and a subgrain size less than 2 .mu.m. A method combining the continuous extrusion process of preparing semi-solid raw material with semi-solid forming of shaped articles is also disclosed.

    摘要翻译: 提供了连续摩擦挤压方法,用于连续地生产适用于半固体成形的变形细晶粒固体金属组合物。 该工艺的特点是产品尺寸范围广,精确控制工艺参数,如总变形,挤出温度和速度。 将总变形控制为大于米塞斯有效应变为2.3,以获得具有足够的变形能量的变形细晶粒结构,其具有小于30μm的粒度和小于2μm的亚晶粒度。 还公开了将半固体原料与成型制品的半固体成型相结合的连续挤出方法。

    Pressure-assisted formation of shaped articles

    公开(公告)号:US5740688A

    公开(公告)日:1998-04-21

    申请号:US539371

    申请日:1995-10-05

    IPC分类号: B21C23/00 B21J5/00 B21K1/28

    摘要: An apparatus and method for the forming of a shaped article includes a means for plasticizing a feed material; a die chamber; a means for delivering a plasticized feed material from the plasticizing means and into the die chamber, the delivery means in flow communication with the plasticizing means and the die chamber; and means for applying a pressure to a material in the die chamber. In operation, a feed material is introduced into a plasticizing source; the plasticized feed material is delivered to a die chamber connectable in flow communication with the plasticizing source; and supplemental pressure is applied to the plasticized feed material within the die chamber.

    Continuous extrusion of complex articles
    5.
    发明授权
    Continuous extrusion of complex articles 失效
    连续挤压复杂制品

    公开(公告)号:US5598731A

    公开(公告)日:1997-02-04

    申请号:US342107

    申请日:1994-11-18

    摘要: An apparatus for continuously extruding shaped articles includes a frictional extrusion source for extruding a feed material, a chamber for holding frictionally extruded material received from the extrusion source, a plurality of die chambers, each of the die chambers receiving extruded material from the holding chamber, a conduit for directing extruded material from the holding chamber to each die chamber for selectively filling each die chamber with extruded feed material and a monitor for filling of each die chamber of said plurality of die chambers with extruded feed material. The conduit is responsive to the monitor so that extruded material can be directed from a filled die to chamber to an empty die chamber for subsequent filling, thereby permitting continuous extrusion.

    摘要翻译: 用于连续挤出成形制品的装置包括用于挤压进料的摩擦挤出源,用于保持从挤出源接收的摩擦挤出材料的室,多个模腔,每个模腔从容纳室接收挤压材料, 用于将挤压材料从保持室引导到每个模具室的导管,用于用挤出的进给材料选择性地填充每个模具室,以及用挤出的进料填充所述多个模腔的每个模腔的监测器。 导管响应于监视器,使得挤出的材料可以从填充的模具引导到室到空模腔,用于随后的填充,从而允许连续挤出。

    Method of casting amorphous and microcrystalline microwires
    6.
    发明授权
    Method of casting amorphous and microcrystalline microwires 失效
    铸造非晶态和微晶微波的方法

    公开(公告)号:US5240066A

    公开(公告)日:1993-08-31

    申请号:US766034

    申请日:1991-09-26

    摘要: A method for preparing glass-coated microwires is provided. A metal in a glass tube is superheated in a high frequency induction field, whereby the glass tube softens. A thin capillary tube is drawn from the softened glass and the glass tube fills with molten metal. The metal-filled capillary enters a cooling zone in the superheated state and the rate of cooling is controlled such that a microcrystalline or amorphous metal microstructure is obtained. The cooling zone includes a stream of cooling liquid through which the capillary passes. The microstructure of the microwire is controlled by choice of amorphisizers, cooling rate, nature of the cooling liquid, location of the cooling stream, dwell time in the cooling stream and degree of superheating and supercooling of the metal.

    摘要翻译: 提供了一种制备玻璃包覆微丝的方法。 玻璃管中的金属在高频感应场中过热,由此玻璃管软化。 从软化玻璃中抽出细毛细管,玻璃管充满熔融金属。 金属填充的毛细管进入过热状态的冷却区,并且控制冷却速率,从而获得微晶或非晶金属微结构。 冷却区包括毛细管通过的冷却液流。 微丝的微观结构通过选择无焰化,冷却速度,冷却液的性质,冷却流的位置,冷却流中的停留时间以及金属的过热和过冷度来控制。

    Processes for continuously producing fine grained metal compositions and for semi-solid forming of shaped articles
    8.
    发明授权
    Processes for continuously producing fine grained metal compositions and for semi-solid forming of shaped articles 失效
    用于连续生产细粒金属组合物和成形制品的半固体成型的方法

    公开(公告)号:US06500284B1

    公开(公告)日:2002-12-31

    申请号:US09095434

    申请日:1998-06-10

    IPC分类号: C22F104

    摘要: There is provided a continuous casting and rolling process for continuously producing a deformed fine grain solid metal composition suitable for semi-solid forming. The process is characterized by high throughput, continuity, and precise control of the process parameters, such as solidification rate, rolling temperature and speed and total deformation. The solidification rate is preferred to be in a range of 10 to 150° C./s, and the total deformation is controlled to be larger than a Mises effective strain of 2.3 to obtain a deformed fine grain structure with enough distortion energy. A method combining the continuous casting and rolling process of preparing semi-solid raw material with semi-solid forming of shaped articles is also disclosed.

    摘要翻译: 提供连续铸造和轧制方法,用于连续生产适用于半固体成形的变形的细晶粒固体金属组合物。 该工艺的特点是高生产率,连续性和精确控制工艺参数,如凝固速率,轧制温度,速度和总变形。 固化速度优选在10〜150℃/秒的范围内,并且将总变形控制为大于米塞斯有效应变为2.3以获得具有足够的变形能的变形细晶粒结构。 还公开了一种将半固体原料与成型制品半固体成型制备连续铸造和轧制过程的方法。

    Method for coating particles using counter-rotating disks
    9.
    发明授权
    Method for coating particles using counter-rotating disks 失效
    使用反向旋转盘涂覆颗粒的方法

    公开(公告)号:US5312648A

    公开(公告)日:1994-05-17

    申请号:US755127

    申请日:1991-09-05

    CPC分类号: B22F9/04 B22F1/025 C23C24/04

    摘要: A metal-coated particle is prepared by providing a disintegrator apparatus with a working chamber containing counter-rotating disks equipped with teeth design to accelerate particles towards one another, providing a first material and a second metal as powders, such that the first material is harder than the second metal and introducing the first material and second metal powders into the working chamber of the disintegrator apparatus, whereby the soft second metal collides with the hard material and is coated onto the surface of the hard first material. A metal-coated metal with an intermetallic interface is prepared by introducing a first material and a second metal as powders into a disintegrator working chamber containing counter-rotating disks and teeth designed to accelerate particles towards one another. The first material harder than the second metal and is capable of reacting with the second metal to form an intermetallic compound. The disks of the disintegrator are counter-rotted so as to cause the metal powders to collide with each other, whereby the hard metal powder is mechanically coated by second metal. The rate of rotation of the counter-rotating disks are further increased in a high velocity process whereby high local temperatures generated on impact cause a reaction to occur at the first material/second metal interface to form an intermetallic compound.

    摘要翻译: 通过提供具有工作室的分解器装置来制备金属涂覆的颗粒,所述工作室包含配备有齿设计的反向旋转盘,以将颗粒朝向彼此加速,提供第一材料和第二金属作为粉末,使得第一材料更硬 并且将第一材料和第二金属粉末引入到粉碎装置的工作室中,由此软的第二金属与硬质材料碰撞并涂覆在硬质材料的表面上。 通过将第一材料和第二金属作为粉末引入到包含反向旋转盘和设计用于将颗粒朝向彼此加速的齿的分解器工作室中来制备具有金属间界面的金属涂覆的金属。 所述第一材料比所述第二金属硬,并且能够与所述第二金属反应以形成金属间化合物。 粉碎机的盘被反转以使金属粉末彼此碰撞,由此硬金属粉末被第二金属机械地涂覆。 反转盘的旋转速度在高速过程中进一步增加,由此在冲击下产生的高局部温度导致在第一材料/第二金属界面处发生反应以形成金属间化合物。

    Method of preparing particles with a controlled narrow distribution
    10.
    发明授权
    Method of preparing particles with a controlled narrow distribution 失效
    制备具有受控窄分布的颗粒的方法

    公开(公告)号:US5302182A

    公开(公告)日:1994-04-12

    申请号:US755074

    申请日:1991-09-05

    IPC分类号: B01J2/12 B22F9/10 B05B3/02

    CPC分类号: B22F9/10 B01J2/12

    摘要: The method for preparing metal powders with a narrow particle size distribution includes providing a disintegrator with a working chamber containing counter-rotating disks equipped with teeth designed to impart high tangential velocities to particles contacting the teeth, introducing a metal melt as a liquid stream with a composition substantially corresponding to the final metal powder composition into the working chamber of the disintegrator, counter-rotating the disks, whereby the liquid stream of metal entering the chamber is broken up into small beads, which leave the surface of the teeth with high velocities, and whereby subsequent contact of the beads with the teeth of the disks further break up the liquid beads until the bead solidifies by heat loss to the disks and collecting a fine metal powder of narrow particle size distribution at the exit end of the working chamber.

    摘要翻译: 用于制备具有窄粒度分布的金属粉末的方法包括提供具有工作室的分解器,该工作室包含配备有齿的反向旋转盘,其设计成赋予与齿接触的颗粒高的切向速度,将金属熔体作为液体流引入 组合物基本上对应于最终的金属粉末组合物进入粉碎机的工作室,使盘反向旋转,由此进入腔室的金属液流被分解成小的珠粒,这些小珠子以高速度离开牙齿的表面, 并且由此珠与盘的齿的后续接触进一步破坏液体珠,直到珠通过热损失固化到盘并且在工作室的出口端收集窄粒度分布的细金属粉末。