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1. 发明授权

US6019158A Investment casting using pour cup reservoir with inverted melt feed gate 失效
标题翻译：投入铸造使用倒杯储存器与倒置熔料进料口
公开(公告)号：US6019158A
公开(公告)日：2000-02-01
申请号：US253982
申请日：1998-05-14
申请人： Mark L. Soderstrom , Dale A. Grumm , Lester G. Striker
发明人： Mark L. Soderstrom , Dale A. Grumm , Lester G. Striker
IPC分类号： B22D18/06 , B22D18/04 , B22D35/04 , B22D39/06 , B22D43/00 , B22D45/00 , B22D18/00 , B22D23/00
CPC分类号： B22D18/04 , B22D35/04
摘要： A ceramic investment mold is disposed in a casting chamber and communicates with a pour cup melt reservoir connected to the mold and having a reservoir volume for holding enough melt to fill the mold. The melt pour cup reservoir is communicated to the mold via an inverted loop feed gate so that the melt is fed from a lower region of the reservoir through the inverted loop feed gate to the mold upon gas pressurization of the reservoir. The loop feed gate is configured to have a loop region above the melt level in the reservoir so as to prevent melt flow from the reservoir to the more mold cavities in the absence of reservoir pressurization. While residing in the pour cup reservoir, oxides and other inclusion-forming particles in the melt can float to the upper surface of the melt, whereby the melt fed from the lower region of the reservoir to the mold via the inverted loop melt feed gate includes reduced amount of inclusion-forming particles. After the melt is introduced into the pour cup, a pressure cap can be positioned in sealing engagement with the pour cup to provide selective or local gas pressure on the melt in the pour cup reservoir to force the melt in the reservoir through the inverted loop feed gate into the mold cavities to fill same.
摘要翻译：陶瓷投资模具设置在铸造室中并与连接到模具的倾倒杯熔体储存器连通并且具有用于容纳足够的熔体以填充模具的储存器容积。熔体浇注杯储存器通过反向回路进料口与模具连通，使得熔体在储存器的气体加压时通过反向回送进料口从储存器的下部区域进料至模具。环路馈送门被配置为具有在储存器中的熔融水平以上的环区域，以便在没有储存器加压的情况下防止熔体从储存器流到更多的模腔。当存在于倾倒杯储存器中时，熔体中的氧化物和其它夹杂物形成颗粒可以浮在熔体的上表面上，由此通过反向环熔体进料口从储存器的下部区域向模具进料的熔体包括夹杂物形成颗粒数量减少。在将熔体引入浇注杯中之后，可以将压力盖定位成与浇注杯密封接合，以在倒杯容器中的熔体上提供选择性或局部气体压力，以迫使容器中的熔体通过倒置环进料门进入模腔以填充相同。

2. 发明授权

US06453979B1 Investment casting using melt reservoir loop 失效
标题翻译：使用熔体回流的熔模铸造
公开(公告)号：US06453979B1
公开(公告)日：2002-09-24
申请号：US09441259
申请日：1999-11-16
申请人： Mark L. Soderstrom , Dale A. Grumm , Lester G. Striker
发明人： Mark L. Soderstrom , Dale A. Grumm , Lester G. Striker
IPC分类号： B22D1800
CPC分类号： B22D35/04 , B22C9/08 , B22D18/04
摘要： Method and apparatus for investment casting wherein a ceramic investment mold is disposed in a chamber and communicates with a melt reservoir connected to the mold and having a reservoir volume for holding enough melt to fill the mold. The melt pour cup reservoir is communicated to the mold via an inverted loop feed gate so that the melt is fed from a lower region of the reservoir through the inverted loop feed gate to the mold upon gas pressurization of the melt in the reservoir. The loop feed gate is configured to have a loop region above the melt level in the reservoir so as to prevent melt flow from the reservoir to the more mold cavities in the absence of pressurization. While residing in the reservoir, oxides and other inclusion-forming particles in the melt can float to the upper surface of the melt, whereby the melt fed from the lower region of the reservoir to the mold via the inverted loop melt feed gate includes reduced amount of inclusion-forming particles.
摘要翻译：用于熔模铸造的方法和装置，其中陶瓷投资模具设置在室中并与连接到模具的熔体储存器连通并且具有用于容纳足够的熔体以填充模具的储存器容积。熔体浇注杯储存器通过反向回路进料口与模具连通，使得熔体在储存器中的熔体的气体加压时通过反向循环进料门从储存器的下部区域供给到模具。循环进料门被配置为具有在储存器中的熔融水平以上的环区域，以便在没有加压的情况下防止熔体从储存器流到更多模腔。当存在于储存器中时，熔体中的氧化物和其它包合物形成颗粒可以漂浮到熔体的上表面，由此通过反向环熔融进料口从储存器的下部区域向模具进料的熔体包括减少量的包合物形成颗粒。

3. 发明授权

US6070644A Investment casting using pressure cap sealable on gas permeable investment mold 失效
标题翻译：使用压力盖进行投资铸造，可在透气性投资模具上密封
公开(公告)号：US6070644A
公开(公告)日：2000-06-06
申请号：US79129
申请日：1998-05-14
申请人： Dale A. Grumm , Bradley S. Donaldson , Mark L. Soderstrom , Dennis Thompson
发明人： Dale A. Grumm , Bradley S. Donaldson , Mark L. Soderstrom , Dennis Thompson
IPC分类号： B22D18/04 , B22D27/13 , B22D27/15
CPC分类号： B22D27/13 , B22D27/15
摘要： A gas permeable ceramic investment mold is disposed in a casting chamber and filled with melt to be solidified via a mold melt inlet, such as for example a mold pour cup adapted to receive the melt from a melting crucible in the casting chamber. After the melt is cast into the hot investment mold in the vacuum casting chamber, a pressure cap is positioned in sealing engagement with the mold melt inlet, and gas pressure is introduced through the pressure cap to provide selective or local gas pressure on the melt in the mold without pressure cracking or other damage to the relatively fragile investment mold, while the casting chamber is maintained under relative vacuum or a different pressure from that in the mold.
摘要翻译：透气陶瓷投资模具设置在铸造室中并且填充有熔体以通过模具熔体入口固化，例如适于从铸造室中的熔化坩埚接收熔体的模具浇注杯。在熔体被浇铸到真空铸造室中的热投资模具中之后，将压力盖定位成与模具熔体入口密封接合，并且气体压力通过压力盖引入以在熔体中提供选择性或局部气体压力模具没有压力破裂或其他损坏的相对脆弱的投资模具，而铸造室保持在相对真空或不同于模具中的压力。

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