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1. 发明授权

US5187346A Laser welding method 失效
标题翻译：激光焊接方法
公开(公告)号：US5187346A
公开(公告)日：1993-02-16
申请号：US750838
申请日：1991-08-29
申请人： Umit Bilge , William C. Jenuwine
发明人： Umit Bilge , William C. Jenuwine
IPC分类号： B23K26/24 , B23K26/32
CPC分类号： B23K26/244 , B23K26/32 , B23K26/322 , B23K2201/34 , B23K2203/04 , B23K2203/50
摘要： A method of laser welding steel sheets that have a thin corrosion protective coating of zinc. The steel sheets are positioned vertically. A pulsed laser beam, which is positioned normal to the sheets is applied to the sheets to melt the material of the sheets and create a weld. During welding, the laser beam is pulsed ON and OFF and the sheets and pulsed laser beam are moved vertically relative to each other such that laser heating of the material creates a cavity. Liquid or molten material flows vertically downwardly by gravity to elongate the cavity and thereby facilitate the escape of zinc vapors from the cavity.
摘要翻译：一种激光焊接钢板的方法，其具有薄的锌腐蚀保护涂层。钢板垂直定位。将垂直于片材定位的脉冲激光束施加到片材上以熔化片材的材料并产生焊缝。在焊接期间，激光束被打开和关闭，并且片材和脉冲激光束相对于彼此垂直地移动，使得材料的激光加热产生空腔。液体或熔融材料通过重力垂直向下流动以延长空腔，从而促进锌蒸气从空腔逸出。

2. 发明授权

US5183992A Laser welding method 失效
标题翻译：激光焊接方法
公开(公告)号：US5183992A
公开(公告)日：1993-02-02
申请号：US750837
申请日：1991-08-29
申请人： Umit Bilge , Christopher E. Jurczyszyn , William C. Jenuwine
发明人： Umit Bilge , Christopher E. Jurczyszyn , William C. Jenuwine
IPC分类号： B23K26/32
CPC分类号： B23K26/322 , B23K26/32 , B23K2201/34 , B23K2203/04 , B23K2203/50
摘要： A method of laser welding steel sheets that have a thin corrosion protective coating of zinc. The steel sheets are positioned vertically. A laser beam, which is positioned normal to the sheets is applied to the sheets to melt the material of the sheets and create a weld. During welding, the sheets and laser beam are moved vertically relative to each other such that laser heating of the material creates a cavity. Liquid or molten material flows vertically downwardly by gravity to elongate the cavity and thereby facilitate the escape of zinc vapors from the cavity.
摘要翻译：一种激光焊接钢板的方法，其具有薄的锌腐蚀保护涂层。钢板垂直定位。将垂直于片材定位的激光束施加到片材上以熔化片材的材料并产生焊缝。在焊接期间，片材和激光束相对于彼此垂直移动，使得材料的激光加热产生空腔。液体或熔融材料通过重力垂直向下流动以延长空腔，从而促进锌蒸气从空腔逸出。

3. 发明授权

US4711984A Ultrasonic method and apparatus for spot weld control 失效
标题翻译：用于点焊控制的超声波方法和装置
公开(公告)号：US4711984A
公开(公告)日：1987-12-08
申请号：US23250
申请日：1987-03-09
申请人： Umit Bilge , August F. Scarpelli , Ronald E. Schwartz , John J. Ross
发明人： Umit Bilge , August F. Scarpelli , Ronald E. Schwartz , John J. Ross
IPC分类号： B23K11/24 , B23K11/25 , G01N29/04 , G01N29/07
CPC分类号： G01N29/07 , B23K11/252 , G01N2291/02863 , G01N2291/048 , G01N2291/2672
摘要： Ultrasonic transducers spring biased into seating engagement in a pair of opposed spot welding tips transmit and receive ultrasonic waves and associated circuitry measures the time of flight between the transducers which is a function of tip separation, workpiece temperature and nugget size which are indicators of the progress of a weld. The rate of change of flight time is measured and the weld current is adjusted early in the weld cycle to maintain a preset rate of weld growth. The weld current is terminated later in the cycle if the transit time rate falls below another preset value. Otherwise the weld current and termination time follow a standard schedule.

4. 发明授权

US4265119A Ultrasonic method of inspecting spot welds 失效
标题翻译：超声波检查点焊方法
公开(公告)号：US4265119A
公开(公告)日：1981-05-05
申请号：US99074
申请日：1979-11-30
申请人： Martin W. Dubetz , Umit Bilge
发明人： Martin W. Dubetz , Umit Bilge
IPC分类号： G01N29/11 , G01N29/34 , G01N29/42 , G01N29/48 , G01N29/00
CPC分类号： G01N29/11 , G01N29/348 , G01N29/42 , G01N29/48 , G01N2291/044 , G01N2291/2672
摘要： To obtain a measure of the size of a spot weld nugget, the weld is scanned with an ultrasonic beam of about 20 megahertz frequency. The ultrasonic signal transmitted through the part is analyzed to determine the presence of the part and the presence of a weld. The detected signal is gated to pass a portion of the signal which has been multiply reflected through the weld region to a bandpass filter which passes frequencies that are selectively attenuated by a weld nugget much more than the surface bond or stick zone surrounding the nugget so that the energy content of the filtered signal is used to determine the presence of nugget material at any point during the scan. A chart recorder controlled according to the energy content of the filtered signal produces a characteristic signature for each weld which distinguishes between the extent of the stick zone and the nugget of each weld so that the weld nugget size is readily determined.
摘要翻译：为了获得点焊块的尺寸，焊缝用约20兆赫兹频率的超声波束扫描。分析通过零件传输的超声波信号，以确定零件的存在和焊缝的存在。检测到的信号被门控以将通过焊接区域多次反射的信号的一部分传递到带通滤波器，该带通滤波器通过比焊接熔核选择性衰减的频率远远超过熔核周围的表面粘结或粘性区域，使得滤波信号的能量含量用于在扫描期间的任何点确定熔核材料的存在。根据过滤信号的能量含量控制的图表记录器为每个焊缝产生特征标记，其区分焊区的范围和每个焊缝的熔核，从而容易地确定焊点的大小。

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