公开(公告)号：US3931847A

公开(公告)日：1976-01-13

申请号：US508303

申请日：1974-09-23

申请人： Bruce E. Terkelsen

发明人： Bruce E. Terkelsen

IPC分类号： B22D27/04 ,  B22D25/06

CPC分类号： B22D27/045

摘要： In the manufacture of cast articles such as gas turbine blades and vanes from high temperature alloys or eutectics, the heating of the mold in readiness for pouring and the cooling of the mold after pouring are precisely controlled by mechanism responsive to thermocouples internal and external to the mold and moving with the mold and a thermocouple in fixed relation within the furnace. The mechanism is especially adapted for use with the withdrawal technique in which the mold when poured is withdrawn from within the heating furnace past a radiation baffle thereby maintaining a steep thermal gradient within the mold and moving relative to the mold to establish the rate of upward movement of the solidification front within the alloy.

摘要翻译： 在制造诸如来自高温合金或共晶体的燃气轮机叶片和叶片的铸造制品中，模具在浇注之后的加热准备浇注和冷却模具，通过响应于内部和外部的热电偶的机构来精确地控制 模具和模具移动以及炉内固定关系的热电偶。 该机构特别适用于撤回技术，其中当加热炉中的模具从加热炉中经过辐射挡板取出时，模具在模具内保持陡峭的热梯度并相对于模具移动，以确定向上运动的速率 的合金中的凝固前沿。

公开(公告)号：US4714101A

公开(公告)日：1987-12-22

申请号：US913834

申请日：1986-09-29

申请人： Bruce E. Terkelsen

发明人： Bruce E. Terkelsen

IPC分类号： C30B11/00 ,  C30B11/14 ,  B22D27/04

CPC分类号： C30B11/002 ,  C30B11/14

摘要： Disclosed are a mold, apparatus and method for obtaining articles of controlled crystallographic orientation using solidification from seeds. The starter section of a directional solidification mold is adapted to both contain a seed and receive molten metal which is flowed over and about a seed to heat and partially melt it. A selector section of the mold has reduced cross section compared to the starter section so that only epitaxially solidified metal will be formed in the article section. A barrier layer resistive to molten metal is applied to portions of the seed to facilitate its removal and reuse.

摘要翻译： 公开了一种用于从种子固化获得受控结晶取向的制品的模具，设备和方法。 定向凝固模具的起始部分适于包含种子并接收熔融金属，所述熔融金属在种子上流过并且围绕种子加热并部分地熔化。 模具的选择器部分与起动器部分相比具有减小的横截面，使得在制品部分中仅形成外延固化的金属。 将耐熔融金属的阻挡层施加到种子的部分以便于其去除和再利用。

公开(公告)号：US4289570A

公开(公告)日：1981-09-15

申请号：US969129

申请日：1978-12-13

申请人： Bruce E. Terkelsen

发明人： Bruce E. Terkelsen

IPC分类号： C30B19/00 ,  B22D27/04 ,  C30B11/00 ,  C30B11/14 ,  C30B21/00 ,  C30B21/02 ,  C30B29/52 ,  C30B17/00

CPC分类号： C30B11/14 ,  B22D27/045 ,  C30B11/00 ,  C30B29/52

摘要： A seed and method for epitaxial solidification of materials, a preferred seed having at least a portion with a melting point 20.degree.-45.degree. C. depressed from that of the alloy being solidified into an article. Boron and silicon are preferably added to nickel superalloys seeds when directionally solidified columnar grain and single crystal articles are formed. Improved seeds also have surface compositions which promote the dissolution of surface contamination films that interfere with epitaxy.

摘要翻译： 用于外延固化材料的种子和方法，优选的种子具有至少一部分熔点为20°-45℃的部分，该合金的熔点低于合金固化成制品。 当形成定向凝固的柱状晶粒和单晶制品时，硼和硅优选加入到镍超合金种子中。 改良的种子还具有表面组合物，其促进干扰外延的表面污染膜的溶解。

公开(公告)号：US4244551A

公开(公告)日：1981-01-13

申请号：US920753

申请日：1978-06-30

申请人： Bruce E. Terkelsen ,  Michael Cybulsky ,  James S. Perron

发明人： Bruce E. Terkelsen ,  Michael Cybulsky ,  James S. Perron

IPC分类号： B22C1/16 ,  B22C3/00 ,  B28B7/34

CPC分类号： B22C3/00 ,  B22C1/165

摘要： Composite ceramic shell molds for investment casting and subsequent directional solidification of nickel and cobalt base superalloys is described. The composite ceramic shell mold is composed of an inner component having an alumina content of at least 80 percent and an average thickness of about ten mils and an outer layer composed predominantly of zircon having a thickness of from 0.1 to 0.4 inches. The alumina component of the shell mold is wet by the superalloy material and this wetting action is believed to cause the substantial elimination of a surface defect problem known as chain porosity. The zircon component of the shell mold had desirable mechanical properties and may easily be removed from the solidified casting. The alumina and zircon components are bonded together in such a fashion that they will not separate during the casting process.

摘要翻译： 描述了用于熔模铸造和随后的镍和钴基超级合金的定向凝固的复合陶瓷壳模具。 复合陶瓷壳模具由氧化铝含量为至少80％，平均厚度约10密耳的内部组分和主要由锆石构成的外层，厚度为0.1至0.4英寸。 壳模具的氧化铝组分被超级合金材料湿润，并且据信这种润湿作用导致基本上消除称为链孔隙的表面缺陷问题。 壳模具的锆石组分具有期望的机械性能，并且可以容易地从固化铸件中除去。 氧化铝和锆石组分以这样的方式结合在一起，使得它们在铸造过程中不会分离。