公开(公告)号：US20150135791A1

公开(公告)日：2015-05-21

申请号：US14296244

申请日：2014-06-04

Applicant: BEIJING UNIVERSITY OF TECHNOLOGY

Inventor： LIN MA ,  HONG-LI SUO ,  YI-CHEN MENG ,  YA-RU LIANG ,  LI-JIA CHEN ,  YAN XU ,  HUI TIAN ,  YI WANG ,  MIN LIU

IPC: B21B1/02

CPC classification number: B21B1/02 ,  B21B3/00 ,  B21B2265/14 ,  C22C1/023 ,  H01L39/126 ,  H01L39/2454

Abstract: A method of rolling NiW alloy tapes for coated conductors belongs to the technical field of metal materials rolling. According to the method, a cylindrical NiW alloy ingot with a diameter not less than 10 mm is used to be rolled back and forth along the axial direction as a rolling direction, wherein the content of W is 5˜7 at. %, and the axis of this ingot is perpendicular to the plane where the axes of working rollers are located. During rolling process, the cross sectional area reduction of the ingot is retained at 5% per pass. When the total cross sectional area reduction of the ingot is larger than 98% and the thickness of the tape is down to 60˜100 μm, the rolling is stopped, and thus the NiW alloy tape is obtained. The method has the advantages that the negative influence generated when the NiW alloy tape is produced from a cuboid initial NiW alloy ingot can be reduced as much as possible, the yield of the NiW alloy tapes is increased, as well as relatively ideal effects can be obtained in terms of the surface biaxial texture, the length and the axial quality.

Abstract translation: 轧制NiW合金带涂层导体的方法属于轧制金属材料的技术领域。 根据该方法，使用直径不小于10mm的圆柱形NiW合金锭作为轧制方向沿着轴向方向前后滚动，其中W的含量为5〜7at。 ％，并且该锭的轴线垂直于工作辊的轴线所在的平面。 在轧制过程中，锭的横截面积减少量保持在每通过5％。 当锭的总横截面积减小大于98％并且带的厚度降至60〜100μm时，停止轧制，从而获得NiW合金带。 该方法的优点在于，可以尽可能地减少由长方体的初始NiW合金锭制造NiW合金带时产生的负面影响，NiW合金带的收率提高，相对理想的效果可以 从表面双轴纹理，长度和轴向质量方面获得。

公开(公告)号：US20160260530A1

公开(公告)日：2016-09-08

申请号：US15133042

申请日：2016-04-19

Applicant: BEIJING UNIVERSITY OF TECHNOLOGY ,  ANHUI EARTH-PANDA ADVANCE MAGNETIC MATERIAL CO., LTD.

Inventor： MING YUE ,  WEIQIANG LIU ,  XIANTAO LI ,  MENG LI ,  MIN LIU ,  DONGTAO ZHANG ,  XIAOWEN YIN ,  XIULIAN HUANG ,  JINGWU CHEN ,  XIAOFEI YI

IPC: H01F1/053 ,  C22C38/16 ,  C22C38/14 ,  C22C38/12 ,  C22C38/10 ,  C22C38/06 ,  C22C38/00 ,  C22C33/02 ,  B22F1/00 ,  B22F3/087 ,  B22F3/10 ,  B22F3/16 ,  B22F5/00 ,  B22F9/04 ,  B22F9/30 ,  C22B59/00 ,  C22B7/00 ,  C21B15/00 ,  H01F41/02 ,  C22C38/60

CPC classification number: H01F1/0536 ,  B22F1/0003 ,  B22F3/087 ,  B22F3/10 ,  B22F3/16 ,  B22F5/00 ,  B22F9/04 ,  B22F9/30 ,  B22F2301/355 ,  B22F2303/01 ,  B22F2303/15 ,  B22F2303/45 ,  B22F2304/10 ,  B22F2998/10 ,  C21B15/00 ,  C22C33/0235 ,  C22C33/0264 ,  C22C33/0278 ,  C22C38/002 ,  C22C38/005 ,  C22C38/008 ,  C22C38/06 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/60 ,  H01F1/0577 ,  H01F41/0266 ,  H01F41/0273 ,  B22F9/20 ,  B22F3/1017

Abstract: The present invention discloses a short process preparation technology of sintered NdFeB magnets from the NdFeB sludge, which relates to a field of recycle technology of NdFeB sludge. The present invention comprises the following steps: water bath distillation of organics in sludge, ultrasonic cleaning, calcium reduction and diffusion, ultrasonic rinsing in a magnetic field and drying, powders mixing and sintering. NdFeB sludge as raw materials was directly prepared from recycled sintered magnets with high magnetic properties. Most of the organics in the sludge could be removed by a vacuum distillation process with stepwise heating. The ultrasonic rinsing process in a magnetic field could effectively remove the remaining organics. The recycled sintered magnets exhibited good maximum energy product [(BH)max] of 35.26 MGOe. The present invention has important features, such as the short processing time, efficient environmental protection, high recycling rate and effective utilization rate of rare earth metals.

Abstract translation: 本发明公开了一种NdFeB污泥钕铁硼烧结磁体的制备工艺，涉及NdFeB污泥回收技术领域。 本发明包括以下步骤：污泥中有机物的水浴蒸馏，超声波清洗，钙还原和扩散，磁场中的超声波清洗和干燥，粉末混合和烧结。 钕铁硼泥作为原料直接由具有高磁性能的回收烧结磁体制备。 污泥中的大部分有机物可以通过逐步加热的真空蒸馏法除去。 磁场中的超声波清洗过程可以有效地去除剩余的有机物。 回收的烧结磁体表现出良好的最大能量乘积[（BH）max]为35.26MGOe。 本发明具有加工时间短，环保效率高，循环利用率高，稀土金属有效利用率高等特点。

公开(公告)号：US20160211437A1

公开(公告)日：2016-07-21

申请号：US14711541

申请日：2015-05-13

Applicant: BEIJING UNIVERSITY OF TECHNOLOGY

Inventor： HONGLI SUO ,  YICHEN MENG ,  LIN MA ,  MIN LIU ,  YI WANG ,  MANGMANG GAO ,  HUI TIAN ,  YARU LIANG ,  PAN WANG ,  FAXUE PENG ,  JING LIU ,  TIANTIAN WANG

IPC: H01L39/12 ,  B22F3/24 ,  C22C19/03 ,  H01L39/24 ,  C22F1/10 ,  B22F3/15 ,  H01L39/00

CPC classification number: C22C19/03 ,  B22F3/24 ,  B22F7/008 ,  B22F7/02 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/0433 ,  C22F1/10 ,  H01L39/2454 ,  B22F1/0003 ,  B22F2009/041 ,  B22F3/15 ,  B22F2003/185 ,  B22F3/18 ,  B22F2003/248 ,  B22F2009/043 ,  B22F2201/013 ,  B22F2202/06

Abstract: A method for preparing element diffusion-type composite substrate and it belongs to the field of high-temperature coated superconducting substrate preparation. The rolled composite nickel-tungsten alloy substrate is heated and thermal insulated, meanwhile, both ends of the rolled substrate are electrified by low voltage and high current density pulse current. High-performance nickel-tungsten alloy composite substrate is obtained with the method in the present invention and sandwich-like composite substrate has low ferromagnetic performance and high strength by higher solution diffusing from inner layer to outer layer, which does not affect the formation of sharp cubic texture on the surface of substrate. On the one hand, electric pulse technology accelerate the interdiffusion effect of inter-layer elements, on the other hand, it promotes the recrystallization nucleation and reduces the recrystallization annealing temperature of the substrate, thus energy saving effect is achieved and the negative effects of annealing thermal erosion grooves among crystal boundary to subsequent coating are effectively reduced. Alloyed composite substrate prepared in this invention has the characteristics of high cubic texture content, low magnetic performance, high strength, and can be applied to large-scale industrial production.

Abstract translation: 一种制备元素扩散型复合衬底的方法，属于高温涂层超导衬底制备领域。 轧制复合镍 - 钨合金基板被加热绝热，同时轧制基板的两端通过低电压和高电流密度脉冲电流通电。 通过本发明的方法获得高性能的镍 - 钨合金复合衬底，并且夹层复合衬底通过从内层向外层扩散的较高溶液具有低铁磁性能和高强度，其不影响尖锐的形成 在基体表面的立方结构。 一方面，电脉冲技术加速了层间元素的相互扩散效应，另一方面促进了再结晶成核，降低了基板的再结晶退火温度，达到节能效果，退火的负面效果 结晶边界到后续涂层的热蚀槽有效减少。 本发明制备的合金复合基材具有立方体结构含量高，磁性能好，强度高的特点，可应用于大规模工业化生产。