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1.发明授权公开(公告)号：US10661333B2
公开(公告)日：2020-05-26
申请号：US16022716
申请日：2018-06-29
申请人： Cheng-Kuan Wu
发明人： Cheng-Kuan Wu
摘要： A casting method using combined 3D printed shell mold and the combined shell mold used in the method. The method consists of shell mold making and casting steps. The shell mold is constructed by combination. First, the 3D printer at least prints out a runner part and several pattern die parts for molding products. In the print run, the first interfaces corresponding to the quantity of pattern die parts are printed out integrally on the runner part. The second interfaces corresponding to the first interfaces are formed on the pattern die parts. Afterwards, the first interfaces and the second interfaces are butted, the primary runner in runner part is connected to the die cavities in pattern die parts, the runner part and pattern die parts are combined to form a shell mold for casting multiple products at a time.
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公开(公告)号：US20180016175A1
公开(公告)日：2018-01-18
申请号：US15715174
申请日：2017-09-26
申请人： Cheng Kuan Wu
发明人： Cheng Kuan Wu
IPC分类号： C03B19/02
摘要： A manufacturing process includes creating 3D shells; connecting the 3D shells together to arrange as rows of the 3D shells and fasten same in a sand box; disposing the sand box in a closed chamber having a furnace and a heater; activating a pump to lower pressure in the closed chamber to be less than the atmospheric pressure; heating the sand box; introducing a molten, non-metallic material from the furnace into each 3D shell; deactivating the pump; flowing gas into the closed chamber to increase the pressure in the closed chamber to be greater than the atmospheric pressure; cooling the sand box; taking the sand box out of the closed chamber; shaking the sand box to separate the rows of the 3D shells from sand; cutting the rows of the 3D shell to obtain the 3D shells; rubbing each 3D shell; and finishing non-metallic products.
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公开(公告)号：US20170305065A1
公开(公告)日：2017-10-26
申请号：US15643498
申请日：2017-07-07
申请人： Cheng Kuan Wu
发明人： Cheng Kuan Wu
IPC分类号： B29C64/106 , B33Y10/00 , B29C64/188 , B29C64/295
CPC分类号： B29C64/106 , B22C9/00 , B29C64/188 , B29C64/295 , B33Y10/00 , B33Y80/00
摘要： A manufacturing process includes creating 3D shells having a sprue; connecting the 3D shells together to arrange as rows of the 3D shells which are placed in a box filled with sand; placing the box in a vacuum chamber; activating a vacuum pump to compact the sand; activating an induction heater to preheat the box; shaking the box; introducing a molten material from an induction furnace into the sprue of each 3D shell until each 3D shell is filled with the molten material; pumping inert gas into the vacuum chamber to increase pressure in the vacuum chamber until an internal pressure of the vacuum chamber is greater than the atmospheric pressure; gradually cooling the box; taking the box out of the vacuum chamber; separating the 3D shells from the sand; cutting to obtain the 3D shells; rubbing each 3D shell; and removing the sand to finish 3D objects.
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公开(公告)号：US10682688B2
公开(公告)日：2020-06-16
申请号：US16124242
申请日：2018-09-07
申请人： Cheng-Kuan Wu , Chen-Hang Wu
发明人： Cheng-Kuan Wu , Chen-Hang Wu
IPC分类号： B22C9/04 , B22C7/02 , B33Y10/00 , B22C9/24 , B33Y80/00 , B29C64/135 , B29C64/118
摘要： A casting method includes constructing a 3D model to add an inner wall compensation quantity, making a thin shell mold by a 3D printing machine, individually treating the thin shell mold by smooth processing, processing the thin shell mold by multi-layer impregnation slurry or gunite to make an outer shell mold, and to form a double-layer shell mold which includes the thin shell mold and the outer shell mold, processing the double-layer shell mold by sand filling and compressing, clearing the thin shell mold by a physical or chemical process, casting the outer shell mold to form a shaped article, and post processing the shaped article by shaking and sand clearing to form a product.
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公开(公告)号：US20200078857A1
公开(公告)日：2020-03-12
申请号：US16124242
申请日：2018-09-07
申请人： Cheng-Kuan Wu , Chen-Hang Wu
发明人： Cheng-Kuan Wu , Chen-Hang Wu
摘要： A casting method includes constructing a 3D model to add an inner wall compensation quantity, making a thin shell mold by a 3D printing machine, individually treating the thin shell mold by smooth processing, processing the thin shell mold by multi-layer impregnation slurry or gunite to make an outer shell mold, and to form a double-layer shell mold which includes the thin shell mold and the outer shell mold, processing the double-layer shell mold by sand filling and compressing, clearing the thin shell mold by a physical or chemical process, casting the outer shell mold to form a shaped article, and post processing the shaped article by shaking and sand clearing to form a product.
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公开(公告)号：US08297952B2
公开(公告)日：2012-10-30
申请号：US12833194
申请日：2010-07-09
申请人： Cheng-Kuan Wu
发明人： Cheng-Kuan Wu
IPC分类号： F04B39/00
CPC分类号： F04D13/10 , F04D29/708 , Y10T137/5109 , Y10T137/5283 , Y10T137/6851 , Y10T137/8122 , Y10T137/85978
摘要： A water inlet unit for an amphibious pump includes a housing having a connecting hole, a first water inlet pipe having a first end connected to the connecting hole and a second end provided with a first water inlet port, a second water inlet pipe having a first end connected to the connecting hole and a second end provided with a second water inlet port, a guide member mounted on the housing and connected to the connecting hole, and a tap detachably locked in the first water inlet port or the second water inlet port. Thus, the water inlet unit has a first water inlet port and a second water inlet port so that the water inlet unit and the amphibious pump are disposed at an upright or transverse state according to the practical space requirement.
摘要翻译： 用于水陆两用泵的进水单元包括具有连接孔的壳体，具有连接到连接孔的第一端的第一进水管和设置有第一进水口的第二端，具有第一入口管的第一进水管， 端部连接到连接孔，第二端设置有第二进水口，安装在壳体上并连接到连接孔的引导构件和可拆卸地锁定在第一进水口或第二进水口中的龙头。 因此，进水单元具有第一进水口和第二进水口，使得进水单元和水陆两用泵根据实际空间要求设置在直立或横向状态。
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公开(公告)号：US6066419A
公开(公告)日：2000-05-23
申请号：US270278
申请日：1999-03-16
申请人： Cheng-Kuan Wu , Te-Yang Fang
发明人： Cheng-Kuan Wu , Te-Yang Fang
CPC分类号： G03F7/70558 , G03F7/70625 , G03F7/70641
摘要： A method for monitoring dosage/focus/leveling is provided. A control wafer is provided and divided into several regions. Five of the regions near the center of the wafer are used to monitor normally. Other regions are used as dummy shots. When a situation of a stepper changes greatly, the dosage/focus/leveling of the control wafer is monitored using the dummy shots. In monitoring exposure dosage, the middlemost region is monitored. One of the five regions, which is the most central, is exposed with a low exposure energy to enhance sensitivity of critical dimension versus energy. Many points with small areas are developed in the centermost region to take sufficient samples. Since the developed points are close, effects from the nonuniformity of development and from the nonuniformity of the photoresist layer are prevented. In focus/leveling monitoring, a curve diagram of exposure dosage versus critical dimension is provided. An exposure parameter is taken at a range of the curve with a large slope. The focus/leveling is monitored at the other four regions near the middlemost region.
摘要翻译： 提供了一种用于监测剂量/焦点/流平的方法。 控制晶片被提供并分成几个区域。 晶圆中心附近的五个区域用于正常监测。 其他区域用作虚拟镜头。 当步进器的情况发生很大变化时，使用虚拟镜头监视控制晶片的剂量/焦点/调平。 在监测暴露剂量时，监测中间区域。 最中心的五个地区之一暴露于低暴露能量，以提高关键尺寸与能量的敏感性。 在最中心地区开发了许多具有小面积的点以获取足够的样品。 由于显影点靠近，因此防止了光刻胶层的不均匀性和不均匀性的影响。 在焦点/调平监测中，提供了暴露剂量与临界尺寸的曲线图。 在具有大斜率的曲线的范围内拍摄曝光参数。 在最中心区域附近的其他四个地区监测焦点/平整度。
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公开(公告)号：US20210023612A1
公开(公告)日：2021-01-28
申请号：US16519477
申请日：2019-07-23
申请人： Cheng-Kuan Wu
发明人： Cheng-Kuan Wu
摘要： A casting method includes preparing a thin shell mold which is sintered and placed in a box. Sands are buried in the box to encompass the thin shell mold. The pressure chamber is depressurized. The casting material is filled into the thin shell mold, such that the thin shell mold is disposed at a vacuum state. Then, the negative pressure of the pressure chamber is released. Then, the pressure chamber is pressurized, to form a pressure difference which presses the casting material to flow into the thin shell mold, thereby finishing the casting work. The temperature of the casting material is reduced, and the pressure in the pressure chamber is increased. Then, the casting material is cooled to form a casting product. Then, the thin shell mold is broken, and the casting product is removed.
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公开(公告)号：US06278116B1
公开(公告)日：2001-08-21
申请号：US09370773
申请日：1999-08-09
申请人： Cheng-Kuan Wu
发明人： Cheng-Kuan Wu
IPC分类号： B01T120
CPC分类号： G03F7/70066 , G03F7/70633
摘要： A method of monitoring the conditions of a deep ultraviolet exposure station. In this invention, three usually separate conventional measurements including reticle blind accuracy, pre-alignment accuracy and overlay accuracy are integrated together. A patterned wafer having a photoresist layer thereon is provided. The photoresist layer on the wafer is exposed using a DUV exposure station. Relative positions of various markers are measured using an image-contrasting station. Hence, the reticle blind accuracy, the pre-alignment accuracy and the overlay accuracy are all determined in a single step.
摘要翻译： 监测深紫外线曝光台的状况的方法。 在本发明中，三个通常分开的常规测量，包括光罩盲准确度，预对准精度和重叠精度被集成在一起。 提供其上具有光致抗蚀剂层的图案化晶片。 使用DUV曝光站对晶片上的光致抗蚀剂层进行曝光。 使用图像对比站测量各种标记的相对位置。 因此，掩模版盲准确度，预对准精度和覆盖精度都是在一个步骤中确定的。
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公开(公告)号：US10933464B2
公开(公告)日：2021-03-02
申请号：US16519477
申请日：2019-07-23
申请人： Cheng-Kuan Wu
发明人： Cheng-Kuan Wu
摘要： A casting method includes preparing a thin shell mold which is sintered and placed in a box. Sands are buried in the box to encompass the thin shell mold. The pressure chamber is depressurized. The casting material is filled into the thin shell mold, such that the thin shell mold is disposed at a vacuum state. Then, the negative pressure of the pressure chamber is released. Then, the pressure chamber is pressurized, to form a pressure difference which presses the casting material to flow into the thin shell mold, thereby finishing the casting work. The temperature of the casting material is reduced, and the pressure in the pressure chamber is increased. Then, the casting material is cooled to form a casting product. Then, the thin shell mold is broken, and the casting product is removed.
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