公开(公告)号：US07084366B1

公开(公告)日：2006-08-01

申请号：US10777666

申请日：2004-02-10

申请人： F. Michael Hosking ,  Aaron C. Hall ,  Richard C. Givler ,  Charles A. Walker

发明人： F. Michael Hosking ,  Aaron C. Hall ,  Richard C. Givler ,  Charles A. Walker

IPC分类号： B23K31/02

CPC分类号： B23K1/0004

摘要： A method for making a braze joint across a discontinuity in a work piece using alternating current. A filler metal is pre-placed at a location sufficiently close to the discontinuity such that, when an alternating current is applied across a work piece to heat the work piece and melt the filler metal, the filler metal is drawn into the discontinuity. The alternating current is maintained for a set residence time, generally less than 10 seconds and more particularly less than 3 seconds. The alternating current is then altered, generally by reducing the current and/or voltage such that the filler metal can solidify to form a braze joint of desired quality and thickness.

摘要翻译： 一种使用交流电在工件上形成不连续的钎焊接头的方法。 将填充金属预放置在足够接近不连续处的位置处，使得当交叉电流施加在工件上以加热工件并熔化填充金属时，将填充金属拉入不连续部。 维持交流电一定的停留时间，通常小于10秒，更特别地小于3秒。 然后通常通过减小电流和/或电压来改变交流电，使得填充金属可以固化以形成具有期望质量和厚度的钎焊接头。

公开(公告)号：US06581438B1

公开(公告)日：2003-06-24

申请号：US10146095

申请日：2002-05-15

申请人： Aaron C. Hall ,  F. Michael Hosking ,  Mark Reece

发明人： Aaron C. Hall ,  F. Michael Hosking ,  Mark Reece

IPC分类号： G01N1100

CPC分类号： B23K31/02 ,  G01N13/02 ,  G01N33/206 ,  G01N2013/0225

摘要： A capillary test specimen, method, and system for visualizing and quantifying capillary flow of liquids under realistic conditions, including polymer underfilling, injection molding, soldering, brazing, and casting. The capillary test specimen simulates complex joint geometries and has an open cross-section to permit easy visual access from the side. A high-speed, high-magnification camera system records the location and shape of the moving liquid front in real-time, in-situ as it flows out of a source cavity, through an open capillary channel between two surfaces having a controlled capillary gap, and into an open fillet cavity, where it subsequently forms a fillet on free surfaces that have been configured to simulate realistic joint geometries. Electric resistance heating rapidly heats the test specimen, without using a furnace. Image-processing software analyzes the recorded images and calculates the velocity of the moving liquid front, fillet contact angles, and shape of the fillet's meniscus, among other parameters.

摘要翻译： 毛细管试样，方法和系统，用于在现实条件下可视化和定量液体的毛细管流量，包括聚合物底部填充，注射成型，焊接，钎焊和铸造。 毛细管测试样本模拟复杂的关节几何形状，并且具有开放的横截面，以允许从侧面容易地直观地进入。 高速，高倍率摄像机系统通过在具有受控毛细管间隙的两个表面之间的开放毛细通道实时地原位记录移动液体前端的位置和形状 并且进入开放的圆角腔，其随后在自由表面上形成已经被配置为模拟现实关节几何形状的圆角。 电阻加热快速加热试样，不使用炉。 图像处理软件分析记录的图像，并计算移动液体前端的速度，圆角接触角以及圆角半月板的形状等参数。