公开(公告)号：US4579319A

公开(公告)日：1986-04-01

申请号：US623365

申请日：1984-06-22

申请人： Nobuyoshi Sasaki

发明人： Nobuyoshi Sasaki

IPC分类号： B22C9/12 ,  B22D47/02 ,  C21D1/84 ,  C21D9/00 ,  F27B9/02 ,  F27B19/02

CPC分类号： C21D1/84 ,  C21D9/0056 ,  F27B9/024

摘要： A combination sintering-annealing furnace is provided, wherein the sintering furnace section and the annealing furnace section are arranged adjacent with each other and separated by a partition wall. A plurality of ventilation windows is provided through the partition wall to allow the waste combustion gas in the sintering furnace to flow into the annealing furnace. The opening area of each ventilation window is adjusted by an adjuster plate. The annealing furnace is also provided with a plurality of cold air inlet ports for introducing therethrough cold air from the atmosphere, the opening area of each cold air inlet port being adjusted by an adjuster plate. A desired temperature distribution in the annealing furnace may be established by controlling the opening areas of the respective ventilation windows and respective cold air inlet ports.

摘要翻译： 提供了一种组合烧结退火炉，其中烧结炉部分和退火炉部分彼此相邻布置并且被分隔壁分隔开。 通过分隔壁设置多个通风窗口，使烧结炉内的废气进入退火炉。 每个通风窗的开口面积由调节板调节。 退火炉还设置有多个冷空气入口，用于从大气引入冷空气，每个冷空气入口的开口面积由调节板调节。 可以通过控制各个通风窗口和各个冷空气入口的开口面积来建立退火炉中的期望的温度分布。

公开(公告)号：US4712605A

公开(公告)日：1987-12-15

申请号：US2006

申请日：1987-01-12

申请人： Nobuyoshi Sasaki ,  Susumu Baba ,  Hisahiro Arai

发明人： Nobuyoshi Sasaki ,  Susumu Baba ,  Hisahiro Arai

IPC分类号： B22C9/04 ,  B22C9/10 ,  B22D19/16

CPC分类号： B22C9/10 ,  B22C9/04 ,  B22D19/16

摘要： A process for producing a hollow metal cast product having a desired interior contour is provided. The process comprises the steps of preparing a first lost model having an outer contour substantially corresponding to a desired interior contour of the finished product, depositing a metallic or ceramic material or a mixture thereof over the surface of said first lost model by spraying to form a layer defining a hollow core block, placing said hollow core block in a first mold, pouring or injecting a material for forming a second lost mold into said first mold to form a second lost model, coating a refractory material over said second lost model to form a second mold for casting, removing second lost mold to form a cavity, casting a molten metal or alloy into said cavity, and staving said second mold to take out a finished product.

摘要翻译： 提供了具有期望的内部轮廓的用于生产中空金属铸造产品的方法。 该方法包括以下步骤：制备具有基本对应于最终产品的期望内部轮廓的外轮廓的第一丢失模型;通过喷涂将金属或陶瓷材料或其混合物沉积在所述第一损失模型的表面上以形成 层，其将所述中空芯块放置在第一模具中，将用于形成第二模具的材料倒入或注入到所述第一模具中以形成第二损失模型，在所述第二模型上涂覆耐火材料以形成 用于铸造的第二模具，去除第二模具以形成空腔，将熔融金属或合金浇铸到所述腔体中，并且将所述第二模具铺设以取出最终产品。

公开(公告)号：US4571270A

公开(公告)日：1986-02-18

申请号：US603108

申请日：1984-04-23

申请人： Nobuyoshi Sasaki

发明人： Nobuyoshi Sasaki

IPC分类号： B01J3/02 ,  B01J3/04 ,  B22C9/04 ,  B22C23/00 ,  B08B3/00

CPC分类号： B22C9/043 ,  B01J3/04

摘要： A process for dewaxing a mold for use in lost wax casting is proposed, wherein the mold is loaded on a pallet which is placed and then securely held on a carrier which is rotatably assembled in a dewaxing tank. The mold is inverted to be ready for dewaxing within the tank and then returned to the initial condition within the tank by rotating the carrier by about 180 degrees at a time.An autoclave for use in the process comprises a carrier framework rotatably disposed within a dewaxing tank for carrying a pallet loaded with shell mold trees. The carrier framework is held in a first position for assembling the pallet and then is rotated by about 180 degrees to a second inverted position to hold the pallet securely in the inverted condition during the dewaxing operation.A preferred embodiment of the autoclave further comprises means for securely fastening the pallet and the mold trees automatically and simultaneously with the operation of sealingly closing the entrance opening of the dewaxing tank.

摘要翻译： 提出了一种脱蜡用于失蜡铸造的模具的方法，其中模具被装载在托盘上，该托盘被放置并牢固地保持在可旋转地组装在脱蜡罐中的托架上。 将模具倒置以准备在罐内脱蜡，然后一次将载体旋转约180度，然后返回到罐内的初始状态。 用于该方法的高压釜包括可旋转地设置在脱蜡罐内的载体框架，用于承载装载有壳模树的托盘。 承载框架保持在用于组装托盘的第一位置，然后旋转约180度到第二倒置位置，以在脱蜡操作期间将托盘牢固地保持在倒置状态。 高压釜的优选实施例还包括用于在密封地关闭脱蜡罐的入口的操作的同时自动和同时牢固地紧固托盘和模塑树的装置。

公开(公告)号：US4651801A

公开(公告)日：1987-03-24

申请号：US801379

申请日：1985-11-22

申请人： Nobuyoshi Sasaki

发明人： Nobuyoshi Sasaki

IPC分类号： B22C7/02

CPC分类号： B22C7/02

摘要： An improved wax master tree used for precision casting is provided. The tree comprises a sprue rod and a plurality of wax masters attached to the sprue rod by fusing. In the improved wax master tree of the invention, the sprue rod is made of a substantially rigid material having a sufficient mechanical strength and withstanding to retain its integrity during the dewaxing step, and has a contour of generally tubular shape with the wall provided with a number of pores and covered with a wax covering layer. The rigidity of the tubular member ensures easy handling of the tree without the fear of damage during the handling operations. By the provision of hollow core portion internally of the tubular member having a wall provided with a number of pores, the risk of cracking of the ceramic shell mold applied on the wax master tree at the dewaxing step caused by the adverse affect of thermal expansion of the wax can be avoided. In the preferred embodiment, the tubular member is made of a magnetic material, such as iron, to have a capability of being heated selectively by high frequency heating to enable easy withdrawal thereof at the initial stage of the dewaxing step to provide a flow passage for the molten wax as well as means for transferring heat from the inside of the ceramic shell mold, whereby the risk of cracking of the ceramic shell mold is further diminished.

摘要翻译： 提供了一种用于精密铸造的改进的蜡主树。 该树包括浇口杆和通过熔化附接到浇道杆上的多个蜡匠。 在本发明的改进的蜡木树中，浇道棒由具有足够的机械强度并且在脱蜡步骤期间保持其完整性的基本上刚性的材料制成，并且具有大致管状形状的轮廓，其中壁设置有 毛孔数量和覆盖层覆盖层。 管状构件的刚性确保了在处理操作期间树的易于处理而不会受到损坏。 通过在管状部件的内部设置具有设置有多个孔的壁的中空芯部，在脱蜡步骤中施加在蜡主树上的陶瓷壳模具的开裂的风险由热膨胀的不利影响引起 可以避免蜡。 在优选实施例中，管状构件由诸如铁的磁性材料制成，以具有通过高频加热选择性地加热的能力，以便能够在脱蜡步骤的初始阶段容易地将其取出，从而为 熔融蜡以及从陶瓷壳模内部传递热量的装置，从而进一步降低了陶瓷壳模的开裂风险。

公开(公告)号：US4601870A

公开(公告)日：1986-07-22

申请号：US603114

申请日：1984-04-23

申请人： Nobuyoshi Sasaki

发明人： Nobuyoshi Sasaki

IPC分类号： B29C45/17 ,  B29C49/06 ,  B29C67/24 ,  B29C45/57

CPC分类号： B29C45/1735 ,  B29C45/1704 ,  B29C49/06 ,  B29C67/241 ,  B29K2091/00

摘要： An injection molding process for molding an article having accurate dimensions without sink marks includes the step of feeding high pressure air into the core portion of a shell or solid molded mass formed by the preceding injection molding step. Preferably, the wax material is injected into a mold cavity through a throttled inlet port to flow thereinto as a vigorous turbulent flow. A separate flow line is provided for feeding high pressure air in the preferred embodiment. More preferably, the volume of injected wax is substantially smaller than the volume of mold cavity.

摘要翻译： 用于模制具有没有凹痕的精确尺寸的制品的注射成型方法包括将高压空气供给到通过前述注射成型步骤形成的壳体或固体模制物料的芯部分中的步骤。 优选地，蜡材料通过节流的入口被注入模腔中，作为剧烈的湍流流入其中。 在优选实施例中提供用于供给高压空气的单独的流动管线。 更优选地，注射的蜡的体积基本上小于模腔的体积。

公开(公告)号：US4685881A

公开(公告)日：1987-08-11

申请号：US692105

申请日：1985-01-17

申请人： Nobuyoshi Sasaki

发明人： Nobuyoshi Sasaki

IPC分类号： B29C45/17 ,  B29C49/06 ,  B29C67/24 ,  B29C45/22

CPC分类号： B29C45/1735 ,  B29C45/1704 ,  B29C49/06 ,  B29C67/241 ,  B29K2091/00

摘要： An injection nozzle assembly is used for molding a plurality of articles having accurate dimensions without causing a sink mark to appear in the molded article. The injection nozzle assembly comprises a body which is heated to a temperature higher than the melting point of thermoplastic material. A cylindrical bore is formed within the body, and an outlet port is formed at one end of said cylindrical bore. A plunger moves within the cylindrical bore between a first position near the outlet port to a second position which is remote from the outlet port. A first feed line supplies the molten thermoplastic material and a second feed line feeds high pressure through passageways that are formed within the body. The plunger is formed within a first passageway connecting the feed line with the outlet port when the plunger is moved to the second position. The pressure at the outlet port is reduced by the movement of the plunger from the first position to the second position.

摘要翻译： 注射喷嘴组件用于模制具有精确尺寸的多个物品，而不会在模制品中出现凹痕。 注射喷嘴组件包括被加热到比热塑性材料的熔点高的温度的主体。 圆柱形孔形成在主体内，并且出口在所述圆柱孔的一端形成。 柱塞在圆柱形孔内在出口附近的第一位置到远离出口的第二位置移动。 第一供给线供应熔融热塑性材料，第二供给线通过形成在主体内的通道供给高压。 当柱塞移动到第二位置时，柱塞形成在将进给线与出口连接的第一通道内。 通过柱塞从第一位置移动到第二位置，出口处的压力减小。

公开(公告)号：US4609031A

公开(公告)日：1986-09-02

申请号：US623384

申请日：1984-06-22

申请人： Nobuyoshi Sasaki

发明人： Nobuyoshi Sasaki

IPC分类号： B22D47/00 ,  B22C9/12 ,  B22D30/00 ,  B22D31/00 ,  B22D47/02 ,  B22D27/00

CPC分类号： B22D30/00 ,  B22D31/002

摘要： A system for sintering molds and for preparing cast products by the use of the thus preformed molds is provided. The system is particularly suited for the production of cast articles made of an alloy, such as magnesium alloys, which is susceptible to cracking unless the cast mass is slowly cooled at least across the solid solution forming temperature range. The system comprises a composite sintering-annealing furnace including a sintering furnace section and an annealing furnace section. The sintering and annealing furnace sections are juxtaposed to be adjacent with each other and separated by a partition wall through which a plurality of ventilation windows is formed for communicating both sections with each other. A plurality of atmospheric air inlet ports is provided through an external wall defining the annealing furnace section. The temperature in the annealing furnace and the distribution thereof are selectively controlled by changing the mixing ratio of the hot combustion gas sucked from the sintering furnace section to the cold atmospheric air introduced through the air inlet ports. The system further comprises a casting device and a cooling device for effecting initial rapid cooling of the hot cast mass.

摘要翻译： 提供了一种用于烧结模具并通过使用如此预制的模具来制备铸造产品的系统。 该系统特别适用于生产由诸如镁合金的合金制成的铸造件，其易于破裂，除非铸件至少在固溶体形成温度范围内缓慢冷却。 该系统包括包括烧结炉部分和退火炉部分的复合烧结退火炉。 烧结和退火炉段彼此相邻并排分隔开一个分隔壁，通过该分隔壁形成有多个通风窗口，用于将两个部分彼此连通。 通过限定退火炉部分的外壁设置多个大气进气口。 通过改变从烧结炉部分吸入的热燃烧气体与通过进气口引入的冷气氛的混合比来选择性地控制退火炉中的温度及其分布。 该系统还包括一个铸造装置和一个冷却装置，用于实现热铸坯的初始快速冷却。

公开(公告)号：US4569385A

公开(公告)日：1986-02-11

申请号：US554203

申请日：1983-11-22

申请人： Nobuyoshi Sasaki

发明人： Nobuyoshi Sasaki

IPC分类号： B22C9/04 ,  B22C13/08

CPC分类号： B22C13/085

摘要： An improved system for the preparation of ceramic shell molds comprises a rotary disk which is mounted for rotating in a substantially horizontal plane. A plurality of wax master mounting bars are pivotally carried by the rotary disk to move around the periphery of the rotary disk. The mounting bars have free ends loaded with the wax masters. The rotary disk is operatively associated with the wax master mounting bars for swinging and rotating the bars on their own axes as the rotary disk rotates continuously. The preferred embodiment comprises a cam of generally twisted undulating cam strips and a roller attached to the base ends of the bars for frictionally engaging the cam face of the cam strip to swing the bars and to rotate them on their own axes. A slurry bath, a drain bath, and a stucco bath are arranged around the exerior side of the periphery of the rotary disk.

摘要翻译： 用于制备陶瓷壳模的改进的系统包括安装用于在基本上水平的平面中旋转的旋转盘。 多个蜡主安装杆由旋转盘枢转地支承以围绕旋转盘的周边移动。 安装杆具有装载蜡主机的自由端。 旋转盘与蜡主安装杆可操作地相关联，用于随着旋转盘连续旋转而在各自的轴线上摆动和旋转杆。 优选实施例包括大致扭曲的起伏凸轮条的凸轮和附接到杆的基端的辊，用于摩擦地接合凸轮条的凸轮面以摆动杆并使它们在它们自己的轴线上旋转。 在旋转圆盘周边的外侧周围布置有浆液浴，排水槽和灰泥浴。