公开(公告)号：US5722481A

公开(公告)日：1998-03-03

申请号：US637416

申请日：1996-04-25

申请人： Junji Yamada ,  Noboru Demukai ,  Masayuki Yamamoto

发明人： Junji Yamada ,  Noboru Demukai ,  Masayuki Yamamoto

IPC分类号： B22D18/06 ,  B22D27/02

CPC分类号： B22D18/06

摘要： Molten metal melted in a levitation melting furnace is cast through a suction pipe immersed therein from above into a mold having a gas permeability in a double-structure mold chamber arranged directly above the melting furnace. The metal is levitation-melted in an inert atmosphere under atmospheric pressure. An outer mold chamber of the double-structure mold chamber is joined to the levitation melting furnace. Pressure in the outer mold chamber and in an inner mold chamber of the double-structure mold chamber and in an upper space in the levitation melting furnace is reduced to below atmospheric pressure. The suction pipe arranged in the inner mold chamber and communicating with the mold therein is immersed into the molten metal. The molten metal is cast into the mold under an increased pressure by blowing an inert gas into the upper space in the melting furnace. The inner mold chamber is raised, thereby pulling out the suction pipe from the molten metal. The outer mold chamber is raised after being returned to atmospheric pressure to separate from the melting furnace.

摘要翻译： 在悬浮熔融炉中熔融的熔融金属通过从上方浸入其中的吸入管流入在直接设置在熔炉上方的双结构模具室中具有透气性的模具。 金属在大气压下在惰性气氛中悬浮熔融。 双结构模腔的外模腔与悬浮熔化炉相连。 双模模具室的外模腔和内模腔中的压力以及悬浮熔炉的上部空间中的压力降低至大气压以下。 布置在内模腔中并与其中的模具连通的吸管浸入熔融金属中。 熔融金属通过在熔化炉的上部空间吹入惰性气体，在增加的压力下铸入模具中。 内模腔升起，从熔融金属抽出抽吸管。 在外部模具室返回到大气压力之后升高以与熔化炉分离。

公开(公告)号：US5738163A

公开(公告)日：1998-04-14

申请号：US628582

申请日：1996-04-03

申请人： Noboru Demukai ,  Masayuki Yamamoto ,  Junji Yamada

发明人： Noboru Demukai ,  Masayuki Yamamoto ,  Junji Yamada

IPC分类号： B22D18/06 ,  B22D18/08 ,  B22D23/00 ,  C22B9/22 ,  F27B14/04 ,  F27B14/06 ,  F27B14/08 ,  F27D3/00 ,  F27D11/06 ,  H05B6/26 ,  H05B6/32 ,  B22D27/02 ,  B22D27/15

CPC分类号： F27B14/063 ,  F27B14/04 ,  F27B14/0806 ,  H05B6/26 ,  H05B6/32 ,  F27D2003/0056

摘要： A levitation melting method and device through which a material having various configurations can be melted through efficient induction heating. First, a starting material(WB), whose outer diameter has been adapted to the inner diameter of a crucible(13), is inserted in crucible(13). The crucible(13) is shielded with argon gas, thereby starting the melting of the material(WB) to molten metal(WM). Subsequently, a suction tube(33) of a mold(31) is inserted into the molten metal(WM) for drawing a part of molten metal(WM) up into the mold(31) for casting. After part of the molten metal(WM) is drawn up, a sliding cover(15) is slid such that a material holder(19) is positioned right above the crucible(13). By opening a sliding plate(35) of the material holder(19), material pieces(WS) are inserted from the material holder(19) into the molten metal(WM) left in the crucible(13). Since gaps in the material pieces(WS) are filled with the molten metal(WM), a dense bulk is formed which is to be melted through induction heating.

摘要翻译： 可以通过有效的感应加热熔化具有各种结构的材料的悬浮熔融方法和装置。 首先，将其外径适应于坩埚（13）的内径的原料（WB）插入坩埚（13）中。 坩埚（13）用氩气屏蔽，从而开始将材料（WB）熔化成熔融金属（WM）。 随后，将模具（31）的吸管（33）插入熔融金属（WM）中，用于将一部分熔融金属（WM）向上拉入模具（31）以进行铸造。 在熔融金属（WM）的一部分被拉出之后，滑动盖（15）滑动使得材料保持器（19）位于坩埚（13）正上方。 通过打开材料保持器（19）的滑板（35），将材料块（WS）从材料保持器（19）插入到坩埚（13）中留下的熔融金属（WM）中。 由于材料块（WS）中的间隙被熔融金属（WM）填充，所以形成致密体，其将通过感应加热熔化。

公开(公告)号：US5837055A

公开(公告)日：1998-11-17

申请号：US641972

申请日：1996-05-01

申请人： Junji Yamada ,  Noboru Demukai

发明人： Junji Yamada ,  Noboru Demukai

IPC分类号： C22B9/22 ,  B22D18/06 ,  C21C5/52 ,  F27B14/06 ,  F27D11/06 ,  H05B6/02 ,  H05B6/32 ,  C30B11/02

CPC分类号： H05B6/32 ,  F27B14/063 ,  Y10S117/901

摘要： Disclosed is a levitation melting method comprising applying a high-frequency current to a high frequency induction coil wound around a melting crucible to induction-heat a material introduced to the melting crucible; and erecting the resulting molten metal to be in no contact with the inner wall surface of the melting crucible with the bottom of the material being maintained in the solidified state; wherein a power input P of a high-frequency power source to the high-frequency induction coil, an inner radius R at the bottom of the crucible and super heat .DELTA.T of the molten metal satisfy the relationship of P/R2=.DELTA.T.multidot.(0.0008 to 0.002), as well as, a melting and casting method for casting the molten metal prepared by the levitation melting method described above into a mold using a snout suspended above the melting crucible such that the lower end of the snout may be submerged in the molten metal.

摘要翻译： 公开了一种悬浮熔融法，其包括将高频电流施加到缠绕在熔融坩埚上的高频感应线圈，对导入熔融坩埚的材料进行感应加热; 并且使所得到的熔融金属与材料的底部保持固化状态而不与熔融坩埚的内壁表面接触; 其中高频电源的功率输入P到高频感应线圈，坩埚底部的内半径R和熔融金属的超热量DELTA T满足P / R2 = DELTA Tx（ 0.0008〜0.002），以及通过上述悬浮熔融法制备的熔融金属的熔融铸造方法，使用悬挂在熔融坩埚上方的喷嘴将模具浸入到模具中，使得可将鼻孔的下端浸入 熔融金属。

公开(公告)号：US5636241A

公开(公告)日：1997-06-03

申请号：US641519

申请日：1996-05-01

申请人： Junji Yamada ,  Noboru Demukai

发明人： Junji Yamada ,  Noboru Demukai

IPC分类号： F27B14/04 ,  F27B14/06 ,  F27B14/10 ,  F27B17/00 ,  H05B6/32 ,  H05B6/22

CPC分类号： H05B6/32 ,  F27B14/063

摘要： Disclosed is a levitation melting crucible which can facilitate penetration of magnetism into the crucible and which can prevent a molten metal from being contaminated by an insulating material. The levatation melting crucible comprises a cylindrical main body having a closed bottom, a plurality of slits defined vertically in the circumferential wall of the main body to open inward and outward at predetermined intervals in the circumferential direction and an insulating material filled in each of the slits; wherein each slit is designed to have an inner opening width smaller than its outer opening width, with respect to the radius of the main body, for example, 1.5 A>B.

摘要翻译： 公开了一种悬浮熔化坩埚，其可以促进磁力渗透到坩埚中并且可以防止熔融金属被绝缘材料污染。 悬浮熔融坩埚包括具有封闭底部的圆筒形主体，在主体的周壁中垂直设置的多个狭缝，其沿圆周方向以预定间隔向内和向外开口，并且填充在每个狭缝中的绝缘材料 ; 其中每个狭缝被设计成相对于主体的半径例如为1.5A> B具有小于其外部开口宽度的内部开口宽度。

公开(公告)号：US5193607A

公开(公告)日：1993-03-16

申请号：US934910

申请日：1992-08-26

申请人： Noboru Demukai ,  Shingo Hitotsuyanagi

发明人： Noboru Demukai ,  Shingo Hitotsuyanagi

IPC分类号： B22D18/06

CPC分类号： B22D18/06

摘要： Precision casting of titanium or titanium alloy includes establishing molten metal by induction heating in an assembly formed with water cooled copper segments disposed circlewise on the inside of an induction coil in a state insulated from each other and casting the molten metal into a permeable mold by vacuum casting. The precision casting method uses apparatus including an induction coil, an assembly formed with the aforementioned copper segments, an arrangement for feeding a base metal from the under side thereof and a permeable mold into which the molten base metal in the assembly is transferred by vacuum casting. It is possible to obtain precision castings of metal having high melting points and high actvitiy such as titanium, titanium alloy or the like.

摘要翻译： 钛或钛合金的精密铸造包括通过感应加热在与绝缘的状态下以感应线圈的内侧圆周设置的水冷铜段组合形成熔融金属，并通过真空将熔融金属铸造成可渗透的模具 铸件。 精密铸造方法使用的装置包括感应线圈，由上述铜段形成的组件，用于从其下侧供给基底金属的装置和通过真空铸造将组合件中的熔融基底金属转移到其中的可渗透模具 。 可以获得具有高熔点和高活性的金属的精密铸件，例如钛，钛合金等。

公开(公告)号：US4614159A

公开(公告)日：1986-09-30

申请号：US757555

申请日：1985-07-22

申请人： Saburo Sugiura ,  Kiyohide Hayashi ,  Kenji Kanada ,  Noboru Demukai ,  Tetsuo Okamoto

发明人： Saburo Sugiura ,  Kiyohide Hayashi ,  Kenji Kanada ,  Noboru Demukai ,  Tetsuo Okamoto

IPC分类号： F23D1/00 ,  F23D1/02 ,  F23L7/00 ,  F23C1/10

CPC分类号： F23D1/02 ,  F23L7/007 ,  F23D2214/00 ,  F23D2900/00006 ,  F23D2900/00018 ,  Y02E20/344

摘要： A powdered coal burner used for directly heating an object to be heated, particularly iron scrap, in a heating vessel. The burner is composed of an oxygen nozzle, a powdered coal nozzle, an air nozzle, disposed concentrically from the center, and a cone which is provided at the end of the opening part of the oxygen nozzle in such a way as to disperse oxygen in a radial direction and burn powdered coal. The burner burns with shortened length of flame, and temperature of the flame is not excessively high.

摘要翻译： 一种用于在加热容器中直接加热待加热物体，特别是废铁的粉煤燃烧器。 燃烧器由氧气喷嘴，粉煤喷嘴，空气喷嘴，从中心同心设置的喷嘴和设置在氧气喷嘴的开口部分的端部的锥体组成，以将氧气分散在 径向和烧煤粉。 燃烧器燃烧时火焰长度变短，火焰温度不会过高。

公开(公告)号：US4706258A

公开(公告)日：1987-11-10

申请号：US904591

申请日：1986-09-08

申请人： Saburo Sugiura ,  Kenji Kanada ,  Noboru Demukai ,  Tetsuo Okamoto

发明人： Saburo Sugiura ,  Kenji Kanada ,  Noboru Demukai ,  Tetsuo Okamoto

IPC分类号： C21C5/52 ,  H05B7/18

CPC分类号： C21C5/5229 ,  C21C5/5217 ,  C21C5/5252 ,  Y02P10/212

摘要： An improvement to a scrap melting method employing an electric arc furnace, which comprises the step of heating the scrap by a powdered coal burner prior to the step of heating the scrap by the electric arc. The burning conditions are controlled so as to reduce the amount of oxidized Fe as well as the amount of NO.sub.x contained in the exhaust gases. In preferred embodiments, a pair of furnaces are employed to heat the scrap alternately by the powdered coal burner and by the electric arc.

摘要翻译： 对使用电弧炉的废料熔化方法的改进包括在通过电弧加热废料的步骤之前通过粉煤燃烧器加热废料的步骤。 控制燃烧条件以减少氧化Fe的量以及废气中所含的NOx的量。 在优选的实施例中，采用一对炉子通过粉煤燃烧器和电弧交替地加热废料。

公开(公告)号：US4691899A

公开(公告)日：1987-09-08

申请号：US748280

申请日：1985-06-24

申请人： Kiyohide Hayashi ,  Saburo Sugiura ,  Noboru Demukai

发明人： Kiyohide Hayashi ,  Saburo Sugiura ,  Noboru Demukai

IPC分类号： C21C5/56 ,  C21C7/00 ,  F27B1/20 ,  F27D3/00 ,  F27D3/16 ,  F27D13/00 ,  F27D99/00 ,  F27D17/00

CPC分类号： F27D13/002 ,  C21C5/565 ,  F27B1/20 ,  F27D3/0025 ,  C21C2007/0093 ,  F27D2003/164 ,  F27D2099/0048 ,  F27D99/0003 ,  Y02P10/216 ,  Y10S266/90

摘要： An improved apparatus for reactor iron making has a furnace body to melt raw material, typically as scrap, a shaft to heat the raw material, and a raw material supply bucket, these three components being arranged vertically, with an exhaust gas combustion tower positioned close to the shaft.Raw material is supplied to the shaft with this apparatus by the bucket, and, after being heated by exhaust gas from the furnace body, the raw material is charged into the furnace body by the opening/closing operation of a shaft damper and a furnace body cover.Exhaust gas is introduced from the furnace body into the combination tower, air is supplied in stages, the temperature of the gas is gradually raised through combustion of CO, and the gas is used to heat the raw material in the shaft.

摘要翻译： 一种用于反应堆制铁的改进装置具有炉体，其通常以废料的形式熔化原料，用于加热原料的轴和原料供应斗，这三个部件垂直布置，废气燃烧塔位于靠近 到轴。 原料由该装置通过铲斗供给到轴，并且在通过来自炉体的废气加热后，原料通过轴阻尼器和炉体的开闭操作而被装入炉体 盖。 废气从炉体引入组合塔中，分级供给空气，气体的温度通过CO的燃烧而逐渐升高，气体用于加热轴中的原料。

公开(公告)号：US4605437A

公开(公告)日：1986-08-12

申请号：US445534

申请日：1982-11-30

申请人： Saburo Sugiura ,  Masanobu Ikeda ,  Noboru Demukai

发明人： Saburo Sugiura ,  Masanobu Ikeda ,  Noboru Demukai

IPC分类号： C21B11/08 ,  C21B11/00 ,  C21C5/56 ,  C21C7/00

CPC分类号： C21C5/562 ,  C21B11/00 ,  C21C2007/0093 ,  Y02P10/216 ,  Y10S266/90 ,  Y10S266/901

摘要： Method of reactor iron making without using electric power in the reactor. Iron scrap and a solid non-petroleum carbonaceous material, i.e., powdery coal or coke, are continuously charged from above into molten iron in the reactor with a space over the molten iron. The carbonaceous material is charged by injecting it with a stream of nitrogen or air. Oxygen gas is simultaneously blown into molten iron below its surface so as to stir it and oxidize the carbonaceous material mainly to CO and blown into the space over the iron to oxidize the CO to CO.sub.2. The amount of oxygen is increased as the amount of molten iron increases. The iron scrap melts from the heat generated by the oxidation. The high temperature exhaust gas is used to preheat scrap to be charged. When the amount of molten iron reaches a predetermined level, it is tapped off until a lower predetermined level is reached. The above steps are repeated. Twin reactor iron making can use the method. Only part of the CO produced in one reactor is oxidized and high temperature exhaust gas is passed to the other reactor while oxygen is added thereto to oxidize the remainder and generate more heat. The heat of the gases and the additional heat of oxidation preheats scrap and carbonaceous material in that reactor.

摘要翻译： 在反应器中不使用电力的反应堆制铁方法。 将铁废料和固体非石油碳质材料，即粉煤或焦炭从上面连续地装入反应器中的铁水中，铁水上方有一个空间。 通过用氮气或空气流注入含碳材料。 氧气同时吹入其表面下方的铁水中，以将其搅拌并将碳质材料主要氧化成CO，并吹入铁中的空间中以将CO氧化成CO 2。 随着铁水量的增加，氧气的量增加。 铁屑从氧化产生的热量中熔化。 高温废气用于预热待充电的废料。 当铁水量达到预定水平时，它被分流直到达到较低的预定水平。 重复上述步骤。 双反炉炼铁可采用该方法。 在一个反应​​器中产生的仅一部分CO被氧化，高温废气通入另一个反应器，同时向其中加入氧气以氧化余量并产生更多的热量。 气体的热量和额外的氧化热预热了该反应器中的废料和含碳材料。

公开(公告)号：US4962291A

公开(公告)日：1990-10-09

申请号：US403440

申请日：1989-09-06

申请人： Senji Fujita ,  Noboru Demukai

发明人： Senji Fujita ,  Noboru Demukai

IPC分类号： B22F9/08

CPC分类号： B22F9/082

摘要： An apparatus is disclosed for producing metal powder having a molten metal holding vessel with a generally cylindrical shaped bottom portion, a molten metal discharging runner located at the bottom portion of the holding vessel, a spraying chamber connected at a lower end of the discharging runner, a first induction heating coil having a diameter and surrounding the holding vessel, a second induction heating coil surrounding the discharging runner, and a ring-shaped magnetic shielding plate disposed between the second induction heating coil and the sliding gate. The discharging runner has a nozzle portion which includes a sliding gate made of ceramic. The sliding gate is movable for controlling the flow of the molten metal through the nozzle portion of the discharging runner. The spraying chamber has gas-jetting nozzles. The second induction heating coil has a diameter smaller than a diameter of the first induction heating coil.