公开(公告)号：US5989365A

公开(公告)日：1999-11-23

申请号：US63828

申请日：1998-04-22

Applicant: Shigeru Yanagimoto ,  Masashi Fukuda ,  Yoshiaki Sutou ,  Takayuki Kato

Inventor： Shigeru Yanagimoto ,  Masashi Fukuda ,  Yoshiaki Sutou ,  Takayuki Kato

IPC: B22D45/00 ,  B21J5/00 ,  B22C9/00 ,  B22D7/06 ,  B22D27/04 ,  B22D41/16 ,  C22C1/02 ,  C22C21/00

CPC classification number: B22D27/045

Abstract: In a metallic ingot used as a forging stock, high dimensional accuracy, small dispersion of weight, good inner quality, and small radius of meniscus are required. In the metallic ingot fulfilling these requirements, the metallic melt 7 is completely filled the mold comprising a sprue 4 closed after pouring of the melt and is forcedly solidified at its bottom by the cooling plate 1. The crystal grains grow almost parallel to the rising direction of the upper surface of the melt 7. The ingot has no cutting surface on the casting surface.

Abstract translation: 在用作锻造坯料的金属锭中，需要高尺寸精度，小的分散重量，良好的内部质量和半月板的小半径。 在满足这些要求的金属锭中，金属熔体7完全填充在浇注熔体之后封闭的浇口4的模具中，并且在其底部被冷却板1强制固化。晶粒几乎平行于上升方向 熔体7的上表面。铸块在铸造表面上没有切割表面。

公开(公告)号：US5904201A

公开(公告)日：1999-05-18

申请号：US588587

申请日：1996-01-18

Applicant: Melvin Robert Jackson ,  Bernard Patrick Bewlay ,  Wayne Alan Demo ,  Stephen Joseph Ferrigno

Inventor： Melvin Robert Jackson ,  Bernard Patrick Bewlay ,  Wayne Alan Demo ,  Stephen Joseph Ferrigno

IPC: B22D11/04 ,  B22D11/124 ,  B22D11/22 ,  B22D19/10 ,  B22D27/04 ,  C21D9/00 ,  B22D23/06

CPC classification number: B22D19/10 ,  B22D27/045 ,  Y10T29/49318 ,  Y10T29/49728 ,  Y10T29/49746

Abstract: A method for forming integral extensions on the end of directionally oriented, superalloy articles, such as airfoil blading members or other components used in gas turbine or other turbine engines. An extension is formed directly on an article by dipping a portion or end of the article into a molten bath of a compatible alloy, followed by withdrawal of the end under controlled conditions sufficient to cause an integral extension to solidify on the article. A ceramic mold is utilized over the dipped end of the article with a mold cavity that generally defines the shape of the extension to be formed. The mold may be formed in situ, or preformed and attached to the subject article. Extensions formed by the method of this invention have a microstructure that is continuous and compatible with that of the article. Such microstructures may include epitaxial growth of the extension from the microstructure of the article. The method establishes a temperature gradient within the article during solidification that may be further controlled by auxiliary heating and/or cooling of the article and/or extension during the practice of the method.

Abstract translation: 一种用于在定向取向的超合金制品（例如翼型叶片构件或用于燃气轮机或其它涡轮发动机中的其它部件）的端部上形成整体延伸部的方法。 通过将制品的一部分或端部浸入相容合金的熔融浴中，直接在制品上形成延伸部，随后在足以引起在制品上固化的整体延伸的受控条件下取出端部。 在制品的浸渍端上使用陶瓷模具，其具有通常限定待形成的延伸部的形状的模腔。 模具可以原位形成，或预成型并附着到主体制品上。 通过本发明的方法形成的延伸部具有与制品的连续且兼容的微结构。 这种微结构可以包括从制品的微观结构延伸的外延生长。 该方法在固化期间在制品内建立温度梯度，其可以在该方法的实践期间通过辅助加热和/或冷却制品和/或延伸来进一步控制。

公开(公告)号：US5568833A

公开(公告)日：1996-10-29

申请号：US478459

申请日：1995-06-07

Applicant: Donald J. Frasier

Inventor： Donald J. Frasier

IPC: B22D27/04

CPC classification number: B22D27/045 ,  B22D27/04

Abstract: A method of casting a turbine wheel of a metal alloy, wherein there is generated a columnar grain structure parallel to the leading and trailing edges of the vanes, by directional solidification of the metal from the central aperture in the wheel outward to the vane tips. A form with cavity to receive therein the molten metal has a thin walled core in the center, with the core wall outer surface in place to provide one wall of the cavity. A heat transfer medium in fluid form is circulated through the core, thereby cooling the poured metal by heat transfer from the inner ends of the vanes outward to the tips.

Abstract translation: 一种铸造金属合金的涡轮机的方法，其中通过将金属从车轮中心孔向外定向固化到叶片尖端而产生平行于叶片的前缘和后缘的柱状晶粒结构。 具有用于在其中容纳熔融金属的空腔的形式在中心具有薄壁芯，芯壁外表面就位以提供腔的一个壁。 流体形式的传热介质通过芯体循环，从而通过从叶片的内端向外传递到尖端来冷却倾倒的金属。

公开(公告)号：US5484008A

公开(公告)日：1996-01-16

申请号：US296963

申请日：1994-08-26

Applicant: Dennis J. Thompson

Inventor： Dennis J. Thompson

IPC: B22D2/00 ,  B22D27/04

CPC classification number: B22D27/045 ,  B22D2/006

Abstract: A thermocouple positioning device is provided for a directional solidification casting apparatus having a furnace for receiving a mold disposed on a chill plate that, in turn, is carried on a movable ram. The thermocouple positioning device comprises a support bracket disposed on the ram for movement therewith. The bracket includes an upstanding slide member and a slideway member disposed on the slide member and having a thermocouple holder thereon. A stop member is disposed in fixed position below the furnace for releasably engaging a stop engaging member on the slideway member as the ram is raised to position the mold in the furnace. Engagement between the stop member and the stop engaging member as the ram is raised positions the thermocouple in a temperature sensing position relative to the mold in the furnace. The thermocouple remains at the temperature sensing position as the mold is withdrawn from the furnace to effect directional solidification of the melt in the mold to form a columnar or single crystal casting in the mold.

Abstract translation: 提供一种用于定向凝固铸造设备的热电偶定位装置，其具有用于接收设置在冷却板上的模具的炉，所述冷却器又被承载在可移动的压头上。 热电偶定位装置包括设置在冲头上的支撑支架，用于与其一起运动。 支架包括直立的滑动构件和设置在滑动构件上并且在其上具有热电偶保持器的滑动构件。 止动构件设置在炉的下方的固定位置，用于当冲头升高以将模具定位在炉中时，可释放地接合滑道构件上的止动接合构件。 作为冲头，止动构件和止动接合构件之间的接合将使热电偶相对于炉中的模具位于温度感测位置。 当模具从炉中取出时，热电偶保持在温度感测位置，以使模具中的熔体定向凝固，以在模具中形成柱状或单晶铸件。

公开(公告)号：US5398745A

公开(公告)日：1995-03-21

申请号：US058407

申请日：1993-05-07

Applicant: Arnold J. Cook

Inventor： Arnold J. Cook

IPC: B22D27/04 ,  B22D18/00

CPC classification number: B22D27/045

Abstract: The present invention is a method of cooling. The method comprises the steps of positioning material in a liquid state within a chamber. Then, there is the step of providing pressurized fluid about the chamber to form a thermal gradient across the chamber to directionally cool the material within. Preferably, the positioning step includes the step of positioning a mold with a mold chamber having material in a liquid state in the mold chamber, within an interior of a pressure vessel. Preferably, the providing step includes the step of introducing fluid, such as gas, into the pressure vessel such that the fluid that initially enters the pressure vessel is heated to a greater temperature than fluid subsequently introduced into the pressure vessel due to the fluid absorbing heat from the interior of the pressure vessel. The fluid at the greater temperature rises to the top of the pressure vessel and forces cooler fluid down so that a thermal gradient is formed in the pressure vessel such that the temperature of the fluid about the top of the mold allows the material within the top of the mold to remain at a higher temperature than the material within the bottom of the mold to induce directional cooling of the material in the mold from the bottom of the mold. For instance, a thermal gradient can be formed which allows the material in the top of the mold to remain molten while the material in the bottom of the mold directionally solidifies. The cooling of a casting in a pressurized environment drastically reduces the cooling time of the casting to room temperature. In a preferred embodiment, the step of introducing fluid into the pressure vessel can serve the dual purpose of forcing the liquid material into the mold chamber and forming the thermal gradient.

Abstract translation: 本发明是一种冷却方法。 该方法包括以下步骤：将液体状态的材料定位在室内。 然后，存在在室周围设置加压流体以形成穿过腔室的热梯度以在其内定向冷却材料的步骤。 优选地，定位步骤包括在压力容器的内部中具有在模具室中具有处于液态的材料的模具室的模具的定位步骤。 优选地，提供步骤包括将流体例如气体引入压力容器的步骤，使得最初进入压力容器的流体由于流体吸收热量而被加热到随后被引入压力容器中的流体的温度更大 从压力容器的内部。 在较高温度下的流体升至压力容器的顶部并迫使冷却器流体向下流动，使得在压力容器中形成热梯度，使得围绕模具顶部的流体的温度允许在 模具保持在比模具底部的材料更高的温度下，以从模具的底部引导模具中的材料的方向冷却。 例如，可以形成热梯度，其允许模具顶部的材料保持熔融，同时模具底部的材料定向凝固。 铸造在加压环境中的冷却大大降低了铸件的冷却时间至室温。 在优选实施例中，将流体引入压力容器的步骤可以用于将液体材料强制进入模腔并形成热梯度的双重目的。

公开(公告)号：US5309976A

公开(公告)日：1994-05-10

申请号：US33274

申请日：1993-03-16

Applicant: Paul D. Prichard ,  Paul R. Aimone

Inventor： Paul D. Prichard ,  Paul R. Aimone

IPC: B22D27/04 ,  B22D25/00

CPC classification number: B22D27/045

Abstract: A method of making a casting wherein a molten alloy is introduced into a mold cavity at an initial mold fill rate to partially fill the mold cavity while the mold cavity resides in a casting chamber. A solidification front is propagated through the molten alloy to provide a solidification rate. The remaining molten alloy is introduced into the mold at a second mold fill rate less than the first mold fill rate as the front propagates through the molten alloy. The second fill rate is controlled to correspond or be matched generally to the solidification rate of the molten alloy in the mold cavity.

Abstract translation: 一种制造铸造的方法，其中熔融合金以初始模具填充率被引入模腔中，以在模腔位于铸造室中时部分地填充模腔。 固化前沿通过熔融合金传播以提供固化速率。 当前部通过熔融合金传播时，剩余的熔融合金以小于第一模具填充率的第二模具填充率被引入模具中。 控制第二填充速率以与模腔中的熔融合金的凝固速率一般对应或匹配。

公开(公告)号：US5168916A

公开(公告)日：1992-12-08

申请号：US54150

申请日：1979-06-22

Applicant: Jean-Claude Doriath ,  Georges M. C. A. Gauje ,  Jacques L. E. Grammagnac

Inventor： Jean-Claude Doriath ,  Georges M. C. A. Gauje ,  Jacques L. E. Grammagnac

IPC: B22D27/04 ,  B22D27/15 ,  F27B17/00

CPC classification number: B22D27/15 ,  B22D27/045

Abstract: A foundry installation designed for the fabrication of metal parts with anriented structure, the installation being of a type comprising a casting chamber communicating with a lock for the introduction and extraction of a mold, via a first opening sealable by a first airtight gate apparatus for casting and for cooling the mold placed in the chamber.In accordance with the invention, the installation includes, in addition, a mold preheating and degassing chamber communicating with the lock via a second opening sealable by a second airtight gate.

Abstract translation: 一种用于制造具有取向结构的金属部件的铸造设备，该装置是包括与用于引入和取出模具的锁连通的铸造室的类型，经由可由第一气密门装置密封的第一开口， 铸造和冷却放置在腔室中的模具。 根据本发明，该装置还包括一个模具预热和脱气室，它通过第二个可密封的密封门的第二个开口与锁相连通。

公开(公告)号：US4850419A

公开(公告)日：1989-07-25

申请号：US413835

申请日：1982-09-01

Applicant: William S. Blazek

Inventor： William S. Blazek

IPC: B22C9/04 ,  B22C9/28 ,  B22D15/00 ,  B22D27/04

CPC classification number: B22D27/045

Abstract: An improved method is provided to cast a one-piece wheel having a circular hub and a plurality of airfoils. The method includes providing a mold having a circular main section and a plurality of open-ended airfoil forming sections. Each of the airfoil forming sections has a thick leading edge portion and a thin trailing edge portion. During a casting operation, the mold is preheated while it is spaced from a chill. The mold and chill are then moved into abutting engagement with the chill extending across the open outer end portion of the airfoil forming sections. The relatively thick leading edge portions of the airfoil forming sections are disposed adjacent to a portion of the chill. Molten metal is poured into the mold cavity and flows outwardly through the airfoil forming sections into engagement with the chill. This results in solidification of columnar grains of metal in a direction toward the center of the mold cavity. As the molten metal is solidifying, heat is conducted at a greater rate from the relatively thick leading edge portions of the airfoils than from the relatively thin trailing edge portions of the airfoils. Therefore, the columnar grains grow in a direction parallel to the central axes of the airfoils.

Abstract translation: 提供了一种改进的方法来铸造具有圆形轮毂和多个翼型件的单件轮。 该方法包括提供具有圆形主要部分和多个开放式翼型形成部分的模具。 每个翼型件形成部分具有厚的前缘部分和较薄的后缘部分。 在铸造操作期间，模具被预热，同时与冷却器间隔开。 然后将模具和冷却件移动成与延伸穿过翼型形成部分的敞开的外端部分的冷却件邻接接合。 翼型形成部分的相对厚的前缘部分设置成与冷却部分相邻。 将熔融的金属倒入模腔中，并通过翼型形成部分向外流动，与冷却物接合。 这导致金属柱状晶粒朝着模腔中心的方向固化。 当熔融金属固化时，从机翼相对较厚的前缘部分以比翼型件相对较薄的后缘部分更大的速率进行加热。 因此，柱状晶粒沿与翼型件的中心轴平行的方向生长。

公开(公告)号：US4774992A

公开(公告)日：1988-10-04

申请号：US62513

申请日：1987-06-15

Applicant: Thomas George

Inventor： Thomas George

IPC: B22D27/04 ,  B22D25/00

CPC classification number: B22D27/045

Abstract: A chill plate moves the mold structure into a furnace, A baffle is supported in an open central portion of an array of article molds by a plurality of support elements. The support elements extend through spaces between the article molds into engagement with a furnace to support the baffle during withdrawal of the article molds from the furnace. In one embodiment of the invention, the support elements are engaged with the furnace by rotating the chill plate through a small arc. When the article molds have been almost completely withdrawn from the furnace, the baffle plate is disposed adjacent to the upper ends of the article molds. At this time, the chill plate is again rotated to disengage the support elements from the furnace. When this happens, the baffle drops downwardly onto the chill plate. Disengagement of the support elements from the furnace may be facilitated by forming the support elements of a relatively brittle material which will break when pressure is applied against either the baffle or the support elements by the mold structure.

Abstract translation: 冷却板将模具结构移动到炉中。挡板通过多个支撑元件支撑在制品模具阵列的敞开的中心部分中。 支撑元件延伸穿过物品模具之间的空间，以与炉子接合以在制品模具从炉中取出期间支撑挡板。 在本发明的一个实施例中，支撑元件通过使冷却盘旋转一小弧而与炉接合。 当制品模具几乎完全从炉中取出时，挡板与制品模具的上端相邻地设置。 此时，冷却板再次旋转以使支撑元件与炉脱离。 当这种情况发生时，挡板向下落到冷却板上。 可以通过形成相对脆性材料的支撑元件来促进来自炉的支撑元件的分离，当通过模具结构将压力施加到挡板或支撑元件上时，该元件将破裂。

公开(公告)号：US4665970A

公开(公告)日：1987-05-19

申请号：US800040

申请日：1985-11-20

Applicant: Atsumi Ohno

Inventor： Atsumi Ohno

IPC: B22D27/04 ,  B22D27/02

CPC classification number: B22D27/045

Abstract: A metallic material is passed through a heating mold having a melting zone to produce a metallic member having a unidirectionally solidified structure.

Abstract translation: 使金属材料通过具有熔融区域的加热模具，以产生具有单向凝固结构的金属构件。