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    • 2. 发明授权
    • Method and apparatus for hot isostatic pressing
    • 热等静压的方法和装置
    • US4582681A
    • 1986-04-15
    • US435662
    • 1982-10-21
    • Akira AsariShiro MatsuuraHidehiro TsuzukiYohichi InoueMasato MoritokiTakao FujikawaJunichi Miyanaga
    • Akira AsariShiro MatsuuraHidehiro TsuzukiYohichi InoueMasato MoritokiTakao FujikawaJunichi Miyanaga
    • B22F3/14B22F3/15B28B3/00B30B11/00F27B17/00B22F3/12
    • B30B11/002B22F3/15B28B3/006
    • A hot isostatic pressing system including a hot isostatic pressing station having a high pressure container constituted by a vertical pressure-resistant cylinder closed at the top end thereof and a lower lid detachably fitted to the bottom of the pressure resistant cylinder and a treating chamber internally provided with a heater and enclosed by a heat insulating wall, and a mechanism for adjusting an atmospheric gas pressure and temperature of the pressing station into a condition suitable for the hot isostatic pressing of a work item accommodated in the treating chamber; a plurality of auxiliary stations each provided with an opening for receiving from beneath thereof the heat insulating wall of the treating chamber accommodating the internal heater and a work item, a support structure for supporting the heat insulating wall, and a mechanism for cooling the work item and internal heater in an inert gas atmosphere; a carriage for transferring the lower lid and work item or the lower lid, work item, heat insulating wall and internal heater between the hot isostatic pressing station and one of the auxiliary stations; and a lift mechanism for lifting up and down the lower lid and work item or the lower lid, work item, heat insulating wall and heater at the hot isostatic pressing station and each one of the auxiliary stations.
    • 一种热等静压按压系统,包括具有高压容器的热等静压按压站,所述高压容器由其顶端封闭的垂直耐压圆筒和可拆卸地装配到耐压圆筒底部的下盖以及内部设置的处理室 具有加热器并由绝热壁包围的机构,以及用于将加压站的气氛气体压力和温度调节到适于对容纳在处理室中的工件进行热等静压的状态的机构; 多个辅助站各自具有开口,用于从其下方接收容纳内部加热器的处理室的隔热壁和工件,用于支撑隔热壁的支撑结构和用于冷却工件的机构 和内部加热器在惰性气体气氛中; 用于在热等静压按压站和辅助站之间传送下盖和工作物品或下盖,工件,隔热墙和内部加热器的托架; 以及一个提升机构,用于在热等静压站和每个辅助站上下下盖和工作物品或下盖,工件,隔热墙和加热器。
    • 3. 发明授权
    • High density sintering method for powder molded products
    • 粉末成型制品的高密度烧结方法
    • US4448747A
    • 1984-05-15
    • US413836
    • 1982-09-01
    • Masato MoritokiTakao FujikawaJunichi Miyanaga
    • Masato MoritokiTakao FujikawaJunichi Miyanaga
    • B22F3/14B22F3/15C04B35/593C04B35/645F27B17/00B22F3/16
    • B30B11/002B22F3/15C04B35/5935C04B35/6455
    • A high density sintering method for powder molded products by applying preliminary sintering to powder molded products previously molded into a predetermined shape and then applying hot isostatic press process to the sintered products thereby producing high density sintered product which includes the steps of loading the powder molded products into a movable heating furnace equipped with at least one heating means and having a heat insulating structure, introducing the heating furnace into an atmosphere chamber, applying preliminary sintering to the powder molded products in the heating furnace by the heating means while conditioning the inside of the atmosphere chamber to a vacuum or predetermined gas atmosphere, subsequently removing the heating furnace while maintaining the inside thereof at a high temperature from the atmosphere chamber and directly introducing the furnace into a high pressure vessel, thereafter, applying the hot isostatic press process to the sintered products in the furnace while charging a gas as a pressure medium under pressure into the high pressure vessel and elevating the temperature in the heating furnace by the heating means, thereby producing high density sintered products, and then removing the heating furnace together with the high density sintered products loaded therein out of the high pressure vessel after completion of the hot isostatic press process.
    • 一种粉末成型品的高密度烧结方法,其特征在于,将预先烧成的粉末成型体预先成型为规定形状,然后对烧结体进行热等静压加工,制造高密度烧结体,其特征在于, 进入配备有至少一个加热装置并具有隔热结构的可移动加热炉,将加热炉引入气氛室中,通过加热装置对加热炉中的粉末成型产品进行预烧结,同时调节 气氛室进入真空或预定的气体气氛,随后从大气室中保持其内部的高温,同时将加热炉取出并直接将炉子引入高压容器中,然后将热等静压机加工到烧结 产品在 在将加压介质的气体作为压力介质在高压容器内进行加热的同时,通过加热装置升高加热炉内的温度,由此制造高密度烧结产品,然后与高密度烧结产品一起除去加热炉 在热等静压机加工完成后,将其从高压容器中装载出来。
    • 4. 发明授权
    • Heater for hot isostatic pressing apparatus
    • 热等静压装置加热器
    • US4503319A
    • 1985-03-05
    • US443566
    • 1982-11-22
    • Masato MoritokiTakao FujikawaKazuo KitagawaJunichi Miyanaga
    • Masato MoritokiTakao FujikawaKazuo KitagawaJunichi Miyanaga
    • B22F3/15F27B5/04F27B5/14H05B3/06F27D11/02
    • B30B11/002B22F3/15B30B15/34F27B5/04F27B5/14Y10T428/30
    • A heater for use in the HIP apparatus for treating a work item or work items in a high temperature and pressure gas atmosphere by isostatic application of pressure in a heated condition, the heater including at least one heater assembly unit including a meandering heating element arranged into a cylindrical grid-like form having axial slits open alternately at the upper and lower ends thereof; a plurality of radial projections of a predetermined width extending radially outward from the upper ends of the meandering heating element at a number of predetermined positions including terminal ends thereof; a number of mounted holes formed through the radial extensions of the heating element; a number of support columns fixedly erected respectively on retaining members and having a male screw portion at the upper ends thereof respectively protruded upwardly through the mounting holes in the radial extensions of the heating element; and a number of nuts respectively threaded and tightened on the protruded ends of the male screw portions of the support columns to thereby support in suspended state the heating element securely on the support columns, forming a cylindrical space therein.
    • 一种用于HIP装置的加热器,用于通过在加热状态下等压施加压力来处理高温高压气体气氛中的工件或工件,所述加热器包括至少一个加热器组件单元,该加热器组件单元包括布置成 具有在其上端和下端交替地开放的轴向狭缝的圆柱形网格形式; 多个径向突起,其具有预定宽度,从所述曲折加热元件的上端径向向外延伸多个包括其末端的预定位置; 多个安装的孔通过加热元件的径向延伸部分形成; 多个支撑柱分别固定在保持构件上并且在其上端处具有阳螺纹部分分别从加热元件的径向延伸部中的安装孔向上突出; 以及分别在支撑柱的阳螺纹部分的突出端上拧紧并拧紧的许多螺母,从而将加热元件牢固地支撑在支撑柱上,在其中形成圆柱形空间。
    • 5. 发明授权
    • Method of hot isostatic pressing treatment
    • 热等静压处理方法
    • US4478626A
    • 1984-10-23
    • US413839
    • 1982-09-01
    • Masato MoritokiTakao FujikawaJunichi Miyanaga
    • Masato MoritokiTakao FujikawaJunichi Miyanaga
    • B22F3/14B22F3/15B28B3/00B30B11/00C04B35/645F27B17/00C03B19/06C03B19/09
    • B22F3/15B28B3/006B30B11/001B30B11/002
    • A method of hot isostatic pressing in which a shaped work immersed in molten glass is subjected to a hot isostatic pressing treatment, the method basically including embedding a shaped item to be worked on in glass powder filled in a crucible; loading the crucible into a movable heating furnace having a heater and a heat insulating structure; charging the furnace into an atmospheric chamber; adjusting the atmosphere in the chamber into a predetermined condition and heating the crucible by the heater to soften and melt the glass in the crucible; transferring the furnace from the atmospheric chamber into a high pressure container while maintaining a high temperature in the furnace; admitting a pressing gas medium into the high pressure container while raising the temperature of the furnace to let the work in the crucible undergo a hot isostatic pressing treatment; and upon completion of the hot isostatic pressing treatment, taking out the furnace from the high pressure container with the work still in loaded state in the heating furnace. In an alternate embodiment of the invention, a plurality of heating furnaces are provided. and more than one atmospheric chamber for a single high pressure container to realize efficient HIP operation with a markedly shortened cycle time.
    • 一种热等静压的方法,其中浸入熔融玻璃中的成形工件进行热等静压处理,该方法基本上包括将填充在坩埚中的玻璃粉末中的成型物体嵌入; 将坩埚装载到具有加热器和绝热结构的可移动加热炉中; 将炉子充入大气室; 将室内的气氛调节到预定条件,并通过加热器加热坩埚以使坩埚中的玻璃软化和熔化; 将炉从大气室转移到高压容器中,同时保持炉内的高温; 在升高炉的温度的同时,将加压气体介质进入高压容器,使坩埚中的工作进行热等静压处理; 并且在热等静压处理完成后,在加热炉中仍然处于负载状态的工作中,从高压容器取出炉。 在本发明的替代实施例中,提供了多个加热炉。 以及一个以上的大气室,用于单个高压容器,以实现有效的HIP操作,并显着缩短了循环时间。
    • 6. 发明授权
    • Heater for hot isostatic pressing apparatus
    • 热等静压装置加热器
    • US4467185A
    • 1984-08-21
    • US437023
    • 1982-10-27
    • Masato MoritokiTakao FujikawaJunichi Miyanaga
    • Masato MoritokiTakao FujikawaJunichi Miyanaga
    • B22F3/15F27B5/14F27B17/00H05B3/14H05B3/62H05B3/64H05B3/02
    • B30B11/002B22F3/15F27B5/14H05B3/62H05B3/64
    • A heater which includes: at least two electrically conductive heating element units having generally a self-standing cylindrical shape and stacked one on another to define a series of at least two cylindrical heating zones, the heating element units each including of a grid-like structure alternately having a vertically disposed portion and a horizontally extending bridge portion; insulator blocks fitted on the ends of stacked upper and lower cylindrical heating element units which meet and which are made of a material having a sufficient electric resistance that will not conduct electric current at a maximum operating temperature of the heating element units; and an annular shaped connector conforming with the ends of the upper and lower heating element units which meet and which is interposed between the insulating blocks on the ends which meet to provide a mechanical connection between the stacked upper and lower heating element units.
    • 一种加热器,包括:至少两个导电加热元件单元,其通常具有自立的圆柱形并且彼此堆叠以限定一系列至少两个圆柱形加热区,所述加热元件单元各自包括格子状结构 交替地具有垂直设置的部分和水平延伸的桥接部分; 绝缘块安装在堆叠的上下圆柱形加热元件单元的端部上,所述绝缘块相交并由具有足够电阻的材料制成,该电阻在加热元件单元的最大工作温度下不会导通电流; 以及与所述上加热元件单元和所述下加热元件单元的端部相符合的环形连接器,所述环形连接器相交并插入在所述端部上的所述绝缘块之间,以在所述堆叠的上部和下部加热元件单元之间提供机械连接。
    • 8. 发明授权
    • Method for producing high density sintered silicon nitride(Si.sub.3 N.sub.4
)
    • 生产高密度烧结氮化硅(Si3N4)的方法
    • US5665291A
    • 1997-09-09
    • US463273
    • 1995-06-05
    • Katuhiko HonmaTsuneo TatsunoHiroshi OkadaMasato MoritokiTakao Fujikawa
    • Katuhiko HonmaTsuneo TatsunoHiroshi OkadaMasato MoritokiTakao Fujikawa
    • C04B35/593C04B35/584
    • C04B35/593C04B35/5935
    • The specification describes a method for producing high density sintered silicon nitride (Si.sub.3 N.sub.4) having a relative density of at least 98%. In a first step, silicon nitride powder is compacted into a desired shape. It is then pre-sintered in a second step, generally, under normal pressure to obtain a presintered body having a relative density of at least 92%. In a third step, the presintered body is subjected to a hot isostatic pressing (HIP) in an inert gas atmosphere of 1500.degree.-2100.degree. C. and of nitrogen gas partial pressure of at least 500 atm. Since the presintering does not require any capsule, it is possible to produce high density sintered Si.sub.3 N.sub.4 of complex configurations. As a sintering aid, Y.sub.2 O.sub.3 --Al.sub.2 O.sub.3 --MgO system sintering aid is particularly effective. To improve the strength of sintered Si.sub.3 N.sub.4, it is effective to add a heat treatment step after the HIP and maintain the temperature of the sintered Si.sub.3 N.sub.4 above 500.degree. C. for a while. Between the second and third steps, the temperature of the presintered body is preferably maintained above 500.degree. C. These temperature controls are effective not only to improve the strength of sintered Si.sub.3 N.sub.4 but also to save the thermal energy and to shorten the production cycle.
    • 该说明书描述了一种生产相对密度至少为98%的高密度烧结氮化硅(Si3N4)的方法。 在第一步骤中,氮化硅粉末被压制成所需的形状。 通常在常压下在第二步骤中预烧结,得到相对密度至少为92%的预烧结体。 在第三步骤中,将预烧结体在1500-2100℃的惰性气体气氛和至少500atm的氮气分压下进行热等静压(HIP)。 由于预烧结不需要任何胶囊,因此可以生产复合结构的高密度烧结Si 3 N 4。 作为烧结助剂,Y2O3-Al2O3-MgO体系的烧结助剂特别有效。 为了提高烧结Si3N4的强度,在HIP之后添加热处理步骤并将烧结的Si 3 N 4的温度保持在500℃以上一段时间是有效的。 在第二和第三步骤之间,预烧结体的温度优选保持在500℃以上。这些温度控制不仅有效地提高了烧结Si 3 N 4的强度,而且有效地节约了热能并缩短了生产周期。
    • 10. 发明授权
    • Method for producing high density sintered silicon nitride (Si.sub.3 N.sub.
4
    • 生产高密度烧结氮化硅(Si3N4)的方法
    • US5445776A
    • 1995-08-29
    • US814806
    • 1991-12-31
    • Katuhiko HonmaTsuneo TatsunoHiroshi OkadaMasato MoritokiTakao Fujikawa
    • Katuhiko HonmaTsuneo TatsunoHiroshi OkadaMasato MoritokiTakao Fujikawa
    • C04B35/593C04B35/58
    • C04B35/593C04B35/5935
    • The specification describes a method for producing high density sintered silicon nitride(Si.sub.3 N.sub.4) having a relative density of at least 98%. In a first step, silicon nitride powder is compacted into a desired shape. It is then presintered in a second step, generally, under normal pressure to obtain a presintered body having a relative density of at least 92%. In a third step, the presintered body is subjected to a hot isostatic pressing(HIP) in an inert gas atmosphere of 1500-2100.degree. C. and of nitrogen gas partial pressure of at least 500 atm. Since the presintering does not require any capsule, it is possible to produce high density sintered Si.sub.3 N.sub.4 of complex configurations. As a sintering aid, Y.sub.2 O.sub.3 --Al.sub.2 O.sub.3 --MgO system sintering aid is particularly effective. To improve the strength of sintered Si.sub.3 N.sub.4, it is effective to add a heat treatment step after the HIP and maintain the temperature of the sintered Si.sub.3 N.sub.4, above 500.degree. C. for a while. Between the second and third steps, the temperature of the presintered body is preferably maintained above 500.degree. C. These temperature controls are effective not only to improve the strength of sintered Si.sub.3 N.sub.4 but also to save the thermal energy and to shorten the production cycle.
    • 该说明书描述了一种生产相对密度至少为98%的高密度烧结氮化硅(Si3N4)的方法。 在第一步骤中,氮化硅粉末被压制成所需的形状。 通常在常压下第二步骤中预烧结,得到相对密度至少为92%的预烧结体。 在第三步骤中,在1500-2100℃的惰性气体气氛和至少500atm的氮气分压下对预烧结体进行热等静压(HIP)。 由于预烧结不需要任何胶囊,因此可以生产复合结构的高密度烧结Si 3 N 4。 作为烧结助剂,Y2O3-Al2O3-MgO体系的烧结助剂特别有效。 为了提高烧结Si3N4的强度,在HIP之后添加热处理步骤并将烧结的Si 3 N 4的温度保持在500℃以上一段时间是有效的。 在第二和第三步骤之间,预烧结体的温度优选保持在500℃以上。这些温度控制不仅有效地提高了烧结Si 3 N 4的强度,而且有效地节约了热能并缩短了生产周期。