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公开(公告)号：US4919714A
公开(公告)日：1990-04-24
申请号：US270859
申请日：1988-11-14
申请人： Saburo Sugiura , Senji Fujita , Hiroya Nakata , Tetsuo Okamoto , Yoshio Inagaki , Keiichi Mizuguchi , Atsushi Ishii
发明人： Saburo Sugiura , Senji Fujita , Hiroya Nakata , Tetsuo Okamoto , Yoshio Inagaki , Keiichi Mizuguchi , Atsushi Ishii
CPC分类号： C21C7/0685 , C21C5/28 , C21C5/35
摘要： Disclosed are an improved method of refining steel and an apparatus for practicing the method.The refining method comprises, basically, carrying out the refining, particularly, decarburization, while stirring molten steel in the refining furnace by injecting gas thereinto, while supplying heat with a burner installed at the top of the furnace to the molten steel. According to this method, it is possible to start at an initial carbon content of the moltend steel lower than that of known AOD process, and complete the refining in a curtailed period of time and with a decreased oxidation loss of Cr. Thus, damage of refractory materials of the furnace is reduced, and the amount of Si necessary for reducing Cr-oxides in the latter stage of the refining is also reduced.Oxygen for the decarburization is supplied usually in the form of gas, but can be supplied from a solid oxygen source. In an alternative of the present method, powdery metal oxide, which is reducable equally to or more easily than Cr-oxides, is shot into the furnace through the burner or injected into the molten steel through a tuyere or an immersed lance.Preferably, the burner is of a type of variable flame length. Use of the burner disclosed here makes it possible to lengthened the flame at the former stage of the refining so that not only heat but also oxygen may be supplied to the molten steel surface of promoting the decarburization, and to shorten the flame at the latter stage of the refining so that only heat may be supplied.
摘要翻译： 公开了一种改进钢的精炼方法和实施该方法的装置。 精炼方法基本上包括进行精炼，特别是脱碳，同时通过在熔炼炉顶部的燃烧炉中对钢水进行加热，同时在精炼炉中搅拌钢液，同时向其中注入气体。 根据该方法，可以从蜕变钢的初始碳含量开始低于已知AOD方法的初始碳含量，并且在缩短的时间段内完成精炼并且减少Cr的氧化损失。 因此，炉的耐火材料的损伤减少，并且在精炼的后期阶段还原Cr氧化物所需的Si量也减少。 用于脱碳的氧气通常以气体的形式提供，但可以由固体氧源供应。 在本方法的替代方案中，与Cr-氧化物同等或更容易还原的粉末金属氧化物通过燃烧器喷射到炉中，或通过风口或浸入式喷枪注入钢水中。 优选地，燃烧器具有可变火焰长度的类型。 这里公开的燃烧器的使用使得可以在炼制的前一阶段延长火焰，使得不仅可以向钢水表面提供热量而且还可以提供氧气以促进脱碳，并且在后一阶段缩短火焰 的精炼，使得仅可以提供热量。
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公开(公告)号：US4614159A
公开(公告)日：1986-09-30
申请号：US757555
申请日：1985-07-22
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。
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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
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。
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公开(公告)号：US4790516A
公开(公告)日：1988-12-13
申请号：US865301
申请日：1986-05-21
申请人： Saburo Sugiura , Masanobu Ikeda , Noboru Demukai
发明人： Saburo Sugiura , Masanobu Ikeda , Noboru Demukai
CPC分类号： C21C5/562 , C21B11/00 , C21C2007/0093 , Y02P10/216 , Y10S266/90 , Y10S266/901
摘要： A reactor for iron making having an upper gas blowing nozzle, a lower gas blowing nozzle, and an iron scrap charging inlet. A vertical shaft is installed directly above the inlet at the top part of the reactor. A mechanism is provided in the lower end of the vertical shaft for controlling charging of the iron scrap to the reactor. A by-pass tube is connected between the top part of the reactor and a gas inlet in the vertical shaft directly above the mechanism for controlling the charging of iron scrap and permits exit of high temperature exhaust gases from the reactor and introduces the exhaust gases to flow through the iron scrap in the vertical shaft to pre-heat the same. Structure is provided in the by-pass tube for introducing oxygen gas or air into the high temperature exhaust gases to react therewith and generate further heat. The structure can comprise a nozzle. The mechanism for controlling charging of iron scrap can include a damper positioned immediately above the inlet in the top part of the reactor which is movable to open and close the vertical shaft together with a stopper positioned above the damper and movable to open and close the vertical shaft. Certain amounts of iron scrap can thereby be charged to the reactor by sequential openings and closings of the damper and the stopper.
摘要翻译： 一种用于制铁的反应器，其具有上部气体喷射喷嘴，下部气体吹送喷嘴和废铁填充入口。 垂直轴安装在反应堆顶部的进口正上方。 在垂直轴的下端设有机构，用于控制废铁向反应堆的充电。 旁通管连接在反应器的顶部和直接在机构上方的垂直轴中的气体入口之间，用于控制废铁的充电，并允许从反应器排出高温废气并将排气引入 流过垂直轴中的废铁，以预加热。 在旁通管中设置有用于将氧气或空气引入高温废气中的结构与其反应并产生进一步的热量。 该结构可以包括喷嘴。 用于控制废铁充电的机构可以包括位于反应器顶部的入口正上方的阻尼器，其可移动以与位于阻尼器上方的止动件一起打开和关闭垂直轴，并可移动以打开和关闭垂直 轴。 因此，通过顺序地开启和关闭阻尼器和塞子，可以将一定量的废铁装入反应器。
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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
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。
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公开(公告)号：US4371392A
公开(公告)日：1983-02-01
申请号：US284802
申请日：1981-07-20
CPC分类号： C22B9/05 , C21C5/5217 , C21C7/072 , C22B9/103 , Y02P10/216
摘要： Refining method of molten metal which employs a refining apparatus provided with a tiltable refining vessel, a tuyere formed therein for blowing inert gas and/or flux or further sometimes additive alloy component(s), with the aid of inert gas into the molten metal, and a suitable number of electrodes for heating the molten metal and flux, for the purpose of performing a first refining process of carrying out the heating of the molten metal and the flux with the electrodes and a second refining process of tilting the vessel for blowing into the molten metal insert gas and others from the tuyere, whereby harmful or unnecessary metallic and/or non-metallic impure components can be removed for improving the quality of the article.
摘要翻译： 使用具有可倾斜精炼容器的精炼装置的熔融金属的精炼方法，其中形成的风口用于将惰性气体和/或助熔剂或其他有时添加的合金成分用惰性气体吹入熔融金属中， 以及用于加热熔融金属和助熔剂的合适数量的电极，用于执行用电极进行熔融金属和助熔剂的加热的第一精炼过程，以及将容器倾斜以进行吹送的第二精炼过程 熔融金属插入气体等来自风口，由此可以除去有害或不必要的金属和/或非金属不纯的组分以改善制品的质量。
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7.发明授权Cold-warm working and heat treatment method of high carbon-high alloy group steel 失效高碳高合金钢组的冷热加工和热处理方法公开(公告)号：US06419770B1
公开(公告)日：2002-07-16
申请号：US09541058
申请日：2000-03-31
IPC分类号： C21D702
CPC分类号： C21D8/005 , C21D2241/02
摘要： The high carbon stainless steel containing more than 0.5 mass % carbon and more than 8 mass % chromium, or the tool steel containing more than 0.5 mass % carbon and more than 0.5 mass % at least one of carbide producing metal elements including chromium, molybdenum, tungsten, vanadium, niobium and titanium is processed by cold-warm working such as forging at a temperature of less than 800 ° C. to make more than 10% plastic deformation to an extent that cracks and voids are formed in the crystallized first stage carbide and, further, processed by a Hot Isostatic Pressing treatment so that the cracks and voids may be cured.
摘要翻译： 含有超过0.5质量％的碳和大于8质量％的铬的高碳不锈钢或者含有大于0.5质量％的碳和大于0.5质量％的工具钢，包括铬，钼， 钨，钒，铌和钛通过冷温加工进行加工，例如在低于800℃的温度下锻造以使10％以上的塑性变形达到在结晶的第一级碳化物中形成裂纹和空隙的程度 并进一步通过热等静压处理进行处理，使得裂纹和空隙可以固化。
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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
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。
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公开(公告)号：US4308415A
公开(公告)日：1981-12-29
申请号：US100433
申请日：1979-12-05
CPC分类号： C21C5/5217 , C21C7/072 , C22B9/05 , C22B9/103 , Y02P10/216
摘要： Refining method of molten metal which employs a refining apparatus provided with a tiltable refining vessel, a tuyere formed therein for blowing inert gas and/or flux or further sometimes additive alloy component(s), with the aid of inert gas into the molten metal, and a suitable number of electrodes for heating the molten metal and flux, for the purpose of performing a first refining process of carrying out the heating of the molten metal and the flux with the electrodes and a second refining process of tilting the vessel for blowing into the molten metal inert gas and others from the tuyere, whereby harmful or unnecessary metallic and/or non-metallic impure components can be removed for improving the quality of the article.
摘要翻译： 使用具有可倾斜精炼容器的精炼装置的熔融金属的精炼方法，其中形成的风口用于将惰性气体和/或助熔剂或其他有时添加的合金成分用惰性气体吹入熔融金属中， 以及用于加热熔融金属和助熔剂的合适数量的电极，用于执行用电极进行熔融金属和助熔剂的加热的第一精炼过程，以及将容器倾斜以进行吹送的第二精炼过程 来自风口的熔融金属惰性气体等，由此可以除去有害或不必要的金属和/或非金属不纯的组分以改善制品的质量。
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