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公开(公告)号：US09597728B2
公开(公告)日：2017-03-21
申请号：US14303923
申请日：2014-06-13
Applicant: General Electric Company
Inventor： Shyh-Chin Huang , Roger John Petterson
CPC classification number: B22D27/045 , B22D46/00
Abstract: A system and method for directionally casting an elongated device are provided. The method includes orienting a mold within a furnace such that a first portion of the mold points downward. The first portion of the mold defines a space within the mold used to form a first end of the device. The first end of the device, when formed, has a greater mass than a second end of the device. The method also includes filling the mold with molten metal and lowering the mold out of the furnace into a liquid metal bath to immerse the first portion of the mold in the liquid metal bath. The method includes concurrently lowering the mold and the liquid metal bath to cool the molten metal.
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公开(公告)号：US20160201167A1
公开(公告)日：2016-07-14
申请号：US14992909
申请日：2016-01-11
Applicant: General Electric Company
Inventor： Akane Suzuki , Michael Francis Xavier Gigliotti, JR. , Shyh-Chin Huang , Pazhayannur Ramanathan Subramanian
CPC classification number: C22C19/057 , B22D27/045 , F01D5/28 , F01D9/041 , F05D2220/32 , F05D2240/35 , F05D2300/175 , F23R3/42
Abstract: Rhenium-free nickel based alloys are provided. More particularly, the alloys comprise preferred levels and ratios of elements so as to achieve good high temperature strength of both gamma matrix phase and gamma prime precipitates, as well as good environmental resistance, without using rhenium. When cast and directionally solidified into single crystal form, the alloys exhibit creep and oxidation resistance substantially equivalent to or better than rhenium-bearing single-crystal alloys. Further, the alloys can be processed by directional solidification into articles in single crystal form or columnar structure comprising fine dendrite arm spacing, e.g., less than 400 μm, if need be, so that further improvements in mechanical properties in the articles can be seen.
Abstract translation: 提供无铼镍基合金。 更具体地，合金包括优选的含量和元素比例，以便在不使用铼的情况下实现γ基质相和γ初始沉淀物的良好的高温强度以及良好的耐环境性。 当铸造和定向凝固成单晶形式时，合金具有基本上等于或优于含铼单晶合金的蠕变和抗氧化性能。 此外，如果需要，合金可以通过定向固化加工成单晶形状或柱状结构的制品，包括细小的枝晶臂间距，例如小于400μm，从而可以看到制品中机械性能的进一步改善。
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公开(公告)号：US20140290896A1
公开(公告)日：2014-10-02
申请号：US14303923
申请日：2014-06-13
Applicant: General Electric Company
Inventor： Shyh-Chin Huang , Roger John Petterson
CPC classification number: B22D27/045 , B22D46/00
Abstract: A system and method for directionally casting an elongated device are provided. The method includes orienting a mold within a furnace such that a first portion of the mold points downward. The first portion of the mold defines a space within the mold used to form a first end of the device. The first end of the device, when formed, has a greater mass than a second end of the device. The method also includes filling the mold with molten metal and lowering the mold out of the furnace into a liquid metal bath to immerse the first portion of the mold in the liquid metal bath. The method includes concurrently lowering the mold and the liquid metal bath to cool the molten metal.
Abstract translation: 提供了一种用于定向铸造细长装置的系统和方法。 该方法包括将模具定位在炉内，使得模具的第一部分向下指向。 模具的第一部分限定了用于形成装置的第一端的模具内的空间。 器件的第一端形成时具有比器件的第二端更大的质量。 该方法还包括用熔融金属填充模具并将模具从炉中降出到液态金属浴中以将模具的第一部分浸入液态金属浴中。 该方法包括同时降低模具和液态金属浴以冷却熔融金属。
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