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公开(公告)号：US20170326624A1
公开(公告)日：2017-11-16
申请号：US15529938
申请日：2015-11-10
发明人： Kazuyuki TSUTSUMI
摘要： The buoyancy transfer jig includes: a rod-shaped rod portion which is disposed extending from an outside of a pattern to an inside of a hollow portion by way of an opening portion which is formed in a foamed mold and makes the outside of the pattern and the hollow portion connected with each other, and is disposed in self hardening sand filled in the hollow portion and the opening portion; and a plate-shaped blade portion which is formed continuously with the rod portion and is disposed in the casting sand.
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公开(公告)号：US20190388962A1
公开(公告)日：2019-12-26
申请号：US16074203
申请日：2017-01-26
发明人： Eisuke KUROSAWA , Kazuyuki TSUTSUMI
摘要： A mold wash is used in a casting method using a lost foam to make a casting having a hole with a diameter of 12 mm or less. The casting method includes determining a thermal decomposition amount ΔC(θ,t) [wt %] of a resin binder when the mold wash is exposed at a temperature θ [° C.] for a time t [sec], and determining a room temperature transverse rupture strength σb(θ,t) [MPa] of the mold wash after receiving thermal loads, and performing casting with the mold wash having the room temperature transverse rupture strength σb(θ,t) after receiving thermal loads being equal to or larger than a threshold value σcr [MPa].
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公开(公告)号：US20170239711A1
公开(公告)日：2017-08-24
申请号：US15502038
申请日：2015-08-05
发明人： Kazuyuki TSUTSUMI , Yusaku TAKAGAWA
摘要： Provided is a casting method using lost foam capable of forming a small highly-finished hole with a diameter of 18 mm or less and a length of 50 mm or more by casting. A casting method using lost foam of the present embodiment includes the steps of embedding, in foundry sand, a casting pattern formed by applying a mold wash with a thickness of 1 mm or more to a surface of the foam pattern, the foam pattern having a hole with a diameter of D (mm); replacing the foam pattern with molten metal by pouring the molten metal into the casting pattern and losing the foam pattern; and forming a casting having a small hole with a diameter of 18 mm or less and a length of 50 mm or more by cooling the molten metal, and the method satisfies the following formulas (0) and (1): 2
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4.发明申请公开(公告)号：US20170036265A1
公开(公告)日：2017-02-09
申请号：US15296559
申请日：2016-10-18
CPC分类号： B22D11/001 , B22D7/005 , B22D9/006 , B22D11/041 , B22D11/11 , B22D11/117 , B22D11/1213 , B22D11/14 , B22D11/141 , B22D21/005 , B22D27/06 , F27D2099/0031 , H05H1/44
摘要： For continuously casting an ingot of titanium or titanium alloy, molten titanium or titanium alloy is poured into a top opening of a bottomless mold with a circular cross-sectional shape, the solidified molten metal in the mold is pulled downward from the mold, a plurality of plasma torches disposed on an upper side of molten metal in the mold such that their centers are located directly vertically above the molten metal in the mold, are operated to generate plasma arcs that heat the molten metal in the mold, and the plasma torches are moved in a horizontal direction above a melt surface of the molten metal in the mold, along a trajectory located directly vertically above the molten metal in the mold, while keeping a mutual distance between the respective plasma torches such that the plasma torches do not interfere with each other.
摘要翻译： 为了连续铸造钛或钛合金锭，将熔融的钛或钛合金注入到具有圆形横截面形状的无底模具的顶部开口中，模具中的固化熔融金属从模具中向下拉，多个 的等离子体炬设置在模具中的熔融金属的上侧，使得它们的中心直接位于模具中的熔融金属垂直上方，以产生加热模具中的熔融金属的等离子体电弧，等离子炬是 沿着位于模具中的熔融金属直接垂直方向上的轨迹沿水平方向在模具中的熔融金属表面上移动，同时保持相应等离子体炬之间的相互距离，使得等离子体炬不干扰 彼此。
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公开(公告)号：US20190224743A1
公开(公告)日：2019-07-25
申请号：US16330752
申请日：2017-09-01
发明人： Yusaku TAKAGAWA , Kazuyuki TSUTSUMI
摘要： A mold molding method includes a binder reaction amount calculation step of calculating a reaction amount ΔC(θ, ti) [wt %] (i=1, 2) of a binder, a specimen room temperature compressive strength calculation step of calculating room temperature compressive strength σc(θ, t) [MPa] of a specimen, a mold room temperature compressive strength prediction step of predicting room temperature compressive strength σca(θ, t) of the mold in advance, and a mold room temperature compressive strength extraction step of extracting room temperature compressive strength σce(θ, t) of the mold. When the mold is actually molded, the model is removed just after elapse of the time t1, as one of the molding condition parameters which satisfies the room temperature compressive strength σce(θ, t).
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6.发明申请CONTINUOUS CASTING APPARATUS FOR INGOTS OBTAINED FROM TITANIUM OR TITANIUM ALLOY 审中-公开从钛或钛合金获得的连续连续铸造装置公开(公告)号：US20160114385A1
公开(公告)日：2016-04-28
申请号：US14895750
申请日：2014-06-11
CPC分类号： B22D11/001 , B22D7/005 , B22D9/006 , B22D11/041 , B22D11/11 , B22D11/117 , B22D11/1213 , B22D11/14 , B22D11/141 , B22D21/005 , B22D27/06 , F27D2099/0031 , H05H1/44
摘要： A continuous casting apparatus continuously casts an ingot formed of titanium or a titanium alloy. The apparatus includes a bottomless mold with a circular cross-sectional shape and a plasma torch. In the bottomless mold, a molten metal is poured from a top opening and the molten metal is solidified and the molten metal solidified is pulled out downward. The plasma torch is disposed on an upper side of the molten metal in the mold and generates a plasma arc that heats the molten metal. A plurality of plasma torches are disposed on the upper side of the molten metal in the mold. The plurality of plasma torches are moved in a horizontal direction above a melt surface of the molten metal along a trajectory keeping a distance not to allow for interference with each other.
摘要翻译： 连续铸造设备连续铸造由钛或钛合金形成的锭。 该装置包括具有圆形横截面形状的无底模具和等离子体焰炬。 在无底模具中，从顶部开口浇注熔融金属，并使熔融金属固化，并将熔融金属固化被向下拉出。 等离子体焰炬设置在模具中的熔融金属的上侧，并产生加热熔融金属的等离子体电弧。 多个等离子体炬设置在模具中的熔融金属的上侧。 多个等离子体炬沿水平方向在熔融金属的熔融表面上沿着保持不允许彼此干涉的距离的轨迹移动。
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公开(公告)号：US20150343521A1
公开(公告)日：2015-12-03
申请号：US14648794
申请日：2013-12-17
IPC分类号： B22D11/00 , B22D11/041
CPC分类号： B22D11/001 , B22D7/005 , B22D11/041 , B22D11/10 , B22D11/11 , B22D21/005 , B22D27/06
摘要： Provided is a device for titanium continuous casting (1) capable, even when continuously casting large diameter titanium ingots or titanium alloy ingots, of suppressing component segregation thereof. The device for titanium continuous casting (1) comprises: a mold (3) having an upper section having a circular upper opening (3a) for pouring in molten metal (6), and a bottom section having a lower opening for continuously drawing ingots (11); and a plurality of plasma torches (4, 5) to heat the molten metal in the mold (3) from the upper opening (3a) side. The plurality of plasma torches (4, 5) are disposed so that the amount of heat input to the molten metal (6) present in the outer circumference enclosing the center of the upper opening (3a) is greater than the amount of heat input to the molten metal (6) present in the center of the upper opening (3a).
摘要翻译： 提供一种钛连续铸造装置（1），即使在连续铸造大直径的钛锭或钛合金锭时，也能抑制其组分偏析。 钛连续铸造装置（1）包括：具有上部的模具（3），该上部具有用于浇注在熔融金属（6）中的圆形上部开口（3a），以及具有用于连续地拉伸铸锭的下部开口 11）; 以及多个等离子体炬（4,5），以从上开口（3a）侧加热模具（3）中的熔融金属。 多个等离子体炬（4,5）被设置成使得输入到包围上部开口（3a）的中心的外周中的熔融金属（6）的热量大于输入到 存在于上部开口（3a）的中心的熔融金属（6）。
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公开(公告)号：US20180361468A1
公开(公告)日：2018-12-20
申请号：US16060129
申请日：2016-12-05
发明人： Kazuyuki TSUTSUMI , Yusaku TAKAGAWA
摘要： A core molding method for molding a core having a twisted shape by use of a core mold includes a curing step and a mold extracting step. In the curing step, after the core mold is disposed along a vertical direction within a frame whose top is open, a self-hardening sand formed of a kneaded mixture of a sand, a resin and a curing agent is charged into the frame from the top of the frame, and then cured. In the mold extracting step, the core mold is extracted in the vertical direction from the core formed of the cured self-hardening sand while rotating the core mold and the frame relatively to each other around an axis of the core mold.
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公开(公告)号：US20170312812A1
公开(公告)日：2017-11-02
申请号：US15519995
申请日：2015-10-19
发明人： Kazuyuki TSUTSUMI
摘要： An opening is provided in a foam pattern, and a coating agent is applied to the opening. The coating agent applied to the opening is taken as a beam having a sectional secondary moment I, a vertical plate thickness h, and a length L. It is assumed that a volume of a cavity part in the foam pattern is V (mm3), a bulk density of the casting sand filling the cavity part is ρs (kg/mm3), a density of the melt is ρm (kg/mm3), an angle of the opening with respect to a vertical direction is θ, and a transverse strength of the coating agent at the highest temperature during pouring of the melt is σb (MPa). A sectional shape of the opening, the angle θ of the opening, and the transverse strength σb of the coating agent are selected to satisfy the expression: σbI>V(ρm−ρs){(hL/2)sin θ−cos θ}.
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公开(公告)号：US20170312811A1
公开(公告)日：2017-11-02
申请号：US15520009
申请日：2015-10-21
发明人： Kazuyuki TSUTSUMI
摘要： In the following expression, it is assumed that a thickness of a coating agent applied to a foam pattern [2] is t (mm), a diameter of a hole part [3] is D (mm), and a normal-temperature transverse strength of the dried coating agent is σc (MPa). At the time of producing a casting provided with a hole having a diameter of 18 mm or smaller and a length of 1 (mm), a coating agent that satisfies the following expression is used when a solidification end time te (sec) at which solidification of a melt ends on a periphery of the hole part [3] is within a time t0 (sec) at which thermal decomposition of the coating agent ends. σc≧{t0/(t0−te)}×(1.5×10−4×12/t2+160/D2)
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