公开(公告)号：US06392190B1

公开(公告)日：2002-05-21

申请号：US09153676

申请日：1998-09-15

申请人： J. Albert Sue ,  Zhigang Fang ,  Alysia Canson White

发明人： J. Albert Sue ,  Zhigang Fang ,  Alysia Canson White

IPC分类号： B23K1000

CPC分类号： B23K9/287 ,  B23K2101/04

摘要： An automated hardfacing system useful for hardfacing roller cones is disclosed. The automated system includes a robot with an arm, a positioner, and a controller which co-ordinates the alignment of the robot and the positioner. The robot holds a hardfacing torch and is capable of movement in three axes of movement. These axes are the x, y, and z axes of the Cartesian co-ordinate system. The positioner holds a roller cone and is capable of movement in at least two axes of movement. The movement includes tilting and rotation about a Cartesian axis. The hardfacing coating produced by the automated system has improved quality and consistency as compared to the one obtained by a manual process.

摘要翻译： 公开了一种用于表面硬化辊锥的自动化硬面系统。 自动化系统包括具有臂的机器人，定位器和控制器，其协调机器人和定位器的对准。 机器人拥有一个耐磨的手电筒，能够在三个运动轴上移动。 这些轴是笛卡尔坐标系的x，y和z轴。 定位器保持一个滚子锥体并且能够在至少两个运动轴线上移动。 运动包括围绕笛卡尔轴的倾斜和旋转。 与通过手动过程获得的涂层相比，自动化系统产生的表面硬涂层具有改进的质量和一致性。

公开(公告)号：US06478887B1

公开(公告)日：2002-11-12

申请号：US09212170

申请日：1998-12-16

申请人： J. Albert Sue ,  Zhigang Fang ,  Alysia Canson White

发明人： J. Albert Sue ,  Zhigang Fang ,  Alysia Canson White

IPC分类号： B22F708

CPC分类号： C23C8/68 ,  C23C8/08 ,  C23C30/005

摘要： A boronized wear-resistant material that includes a boron-containing composition is disclosed. The boron-containing composition includes tungsten carbide and a compound represented by the formula W3MB3, where M is selected from the group consisting of iron, nickel, cobalt and alloys thereof. Particularly, a boride layer containing WC and W3CoB3 may be formed over a cemented tungsten carbide substrate by a suitable boronizing process. Additional compounds present in the boride layer include CoB, W2CoB2, and WB. A relatively thick and uniform boride layer may be obtained over a carbide substrate to form a wear-resistant body. Such a wear-resistant body may be used to manufacture cutting tools, drawing dies, inserts for an earth-boring bit, face seals, bearing surfaces, nozzles, and so on.

摘要翻译： 公开了一种包含含硼组合物的硼化耐磨材料。 含硼组合物包括碳化钨和由式W3MB3表示的化合物，其中M选自铁，镍，钴及其合金。 特别地，含有WC和W3CoB 3的硼化物层可以通过合适的硼化工艺在粘结的碳化钨衬底上形成。 存在于硼化物层中的另外的化合物包括CoB，W2CoB2和WB。 可以在碳化物基材上获得相对厚且均匀的硼化物层，以形成耐磨体。 这种耐磨体可用于制造切削工具，拉丝模，用于钻头的刀片，表面密封件，支承表面，喷嘴等。

公开(公告)号：US06124564A

公开(公告)日：2000-09-26

申请号：US153130

申请日：1998-09-15

申请人： J. Albert Sue ,  Alysia Canson White ,  Zhigang Fang

发明人： J. Albert Sue ,  Alysia Canson White ,  Zhigang Fang

IPC分类号： B23K9/28 ,  B23K10/02 ,  B23K10/00

CPC分类号： B23K10/027 ,  B23K9/287 ,  B23K2201/04

摘要： A new hardfacing composition is disclosed. In addition, a pulsed plasma transferred arc method for depositing hardfacing material with a higher content of carbide and lower dilution by a substrate metal is disclosed. The disclosed method produces a hardfacing coating which has a strong metallurgical bond to the substrate metal. The method includesthe following steps: (1) establishing a transferred plasma arc between an electrode and an area of a work piece, (2) optionally preheating the work piece to at least 250.degree. F., (3) forming a plasma column of inert gas in the arc by passing an electrical current between the electrode and the work piece, (4) feeding a stream of hardfacing material in powder form into the plasma column, and (5) pulsing the current between a pre-selected high pulse current value and low pulse current value while feeding the powdered hardfacing material. In this method, the low pulse current is selected to be sufficiently high to melt at least one component of the hardfacing material. The pulse rate and the high pulse current are selected to minimize the formation of a weld pool on the metal substrate during the hardfacing process. This method has applications in hardfacing any metallic work piece which requires wear resistance or erosion resistance. This method is especially effective in hardfacing roller cone surfaces and the milled teeth of a rock bit for erosion and wear protection.

摘要翻译： 公开了一种新的表面硬化组合物。 另外，公开了一种脉冲等离子体转移电弧法，用于沉积具有较高碳化物含量和较低稀释度的基底金属的表面硬化材料。 所公开的方法产生与基底金属具有强烈冶金结合的表面硬化涂层。 该方法包括以下步骤：（1）在电极和工件区域之间建立转移的等离子弧，（2）任选地将工件预热至至少250°F，（3）形成惰性等离子体柱 通过在电极和工件之间通过电流来使电弧中的气体，（4）将粉末形式的表面硬化材料流供给到等离子体柱中，以及（5）将电流脉冲在预先选择的高脉冲电流值 和低脉冲电流值，同时供给粉末状的表面硬化材料。 在该方法中，选择低脉冲电流足够高以熔化表面硬化材料的至少一种组分。 选择脉冲速率和高脉冲电流以在表面硬化过程中最小化金属基底上的焊池的形成。 该方法具有耐磨性或抗侵蚀性的任何金属工件的表面硬化应用。 该方法特别有效地用于加工滚子锥面和用于侵蚀和磨损保护的钻头的铣削齿。