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公开(公告)号：US10662510B2
公开(公告)日：2020-05-26
申请号：US15142732
申请日：2016-04-29
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Junyoung Park , Brian Victor Moore
Abstract: A ductile iron composition including, by weight: about 3.1% to about 3.6% C; about 3.5% to about 4.0% Si; about 0.035% to about 0.050% Mg; about 0.001% to about 0.004% Ce; up to about 0.005% Sb; about 0.008% to about 0.016% S; up to about 0.04% P; up to about 0.3% Mn; and balance iron and incidental impurities; The ductile iron composition includes a ratio of Sb/Ce greater than or equal to about 1.25, has a ferritic microstructure and graphite nodules, and greater than about 65% of the graphite nodules having a highly spherical geometry. A method and apparatus for forming a ductile iron composition are also disclosed.
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公开(公告)号：US20150139850A1
公开(公告)日：2015-05-21
申请号：US14081116
申请日：2013-11-15
Applicant: General Electric Company
Inventor： Qi Zhao , Steven Robert Hayashi , Brian Victor Moore , Daniel Tribeni Persaud , Michael Douglas Arnett , Junyoung Park
Abstract: A method of casting a low alloy steel using a mold is disclosed. The method includes receiving the mold having a foam pattern disposed within a sand casing. The received foam pattern is coated with a permeable refractory coating and is disposed between compacted sand and the sand casing. The method further includes pouring a molten metal comprising a low alloy steel having a carbon content in a range from about 0.1 to about 0.4 percent into the mold so as to vaporize the foam pattern and remove gasification products through the permeable refractory coating, to form a low alloy steel casting. Further, the method includes removing the low alloy steel casting from the mold.
Abstract translation: 公开了一种使用模具铸造低合金钢的方法。 该方法包括接收具有布置在砂壳内的泡沫图案的模具。 接收的泡沫图案涂覆有可渗透的耐火涂层，并且设置在压实砂与砂壳之间。 该方法还包括将包含碳含量在约0.1至约0.4％范围内的低合金钢的熔融金属浇注到模具中，以便蒸发泡沫图案，并通过可渗透的耐火涂层去除气化产物，形成 低合金钢铸件。 此外，该方法包括从模具中去除低合金钢铸件。
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公开(公告)号：US10046382B2
公开(公告)日：2018-08-14
申请号：US14081116
申请日：2013-11-15
Applicant: General Electric Company
Inventor： Qi Zhao , Steven Robert Hayashi , Brian Victor Moore , Daniel Tribeni Persaud , Michael Douglas Arnett , Junyoung Park
Abstract: A method of casting a low alloy steel using a mold is disclosed. The method includes receiving the mold having a foam pattern disposed within a sand casing. The received foam pattern is coated with a permeable refractory coating and is disposed between compacted sand and the sand casing. The method further includes pouring a molten metal comprising a low alloy steel having a carbon content in a range from about 0.1 to about 0.4 percent into the mold so as to vaporize the foam pattern and remove gasification products through the permeable refractory coating, to form a low alloy steel casting. Further, the method includes removing the low alloy steel casting from the mold.
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公开(公告)号：US20170173668A1
公开(公告)日：2017-06-22
申请号：US15442806
申请日：2017-02-27
Applicant: General Electric Company
Inventor： Zhaoping Wu , Brian Victor Moore , Michael Douglas Arnett , Dejia Wang , Junyoung Park , Yanfei Gu , Qi Zhao
CPC classification number: B22C7/023 , B01J23/002 , B01J23/10 , B01J2523/00 , B22C3/00 , B22C9/046 , B01J2523/25 , B01J2523/3712 , B01J2523/48
Abstract: Refractory slurry for use in coating a foam cluster to provide a foam pattern for lost foam casting is provided. The slurry includes a catalyst capable of catalyzing reactions for vaporizing the foam cluster. A foam pattern with a refractory coating including the catalyst and processes for preparing the foam pattern and using the foam pattern are also provided.
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