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71. 发明公开

EP0480107A1 Method for production of injection moulded powder metallurgy product 失效
标题翻译： Verfahren zur Herstellung von spritzgegossenen powdermetallurgischen Produkten。
公开(公告)号：EP0480107A1
公开(公告)日：1992-04-15
申请号：EP90311212.6
申请日：1990-10-12
申请人： SUMITOMO METAL MINING COMPANY LIMITED
发明人： Kijima, Yoshio
IPC分类号： B22F3/10 , B24C3/32
CPC分类号： B22F3/225 , B08B7/02 , B22F3/22 , B22F3/24 , B22F2998/00 , B22F2998/10 , B22F2999/00 , B26B9/00 , B22F3/02 , B22F3/1021 , B24C11/00 , B22F2003/1042
摘要： An injection molded powder metallurgy product of highly satisfactory quality is obtained by a method which comprises injection molding mixture obtained by kneading a metal powder with a binder, depriving the molded mass of the binder while keeping the molded mass at least in contact with ceramic powder, projecting beads on the molded mass free from the binder, and thereafter sintering the molded mass studded with the beads.
摘要翻译：通过以下方法获得高质量的注射成型粉末冶金产品：一种方法，该方法包括通过将金属粉末与粘合剂捏合而获得的注射成型混合物，剥离模制的粘合剂物质，同时保持模塑物质至少与陶瓷粉末接触，在模制物料上没有粘合剂的突出珠粒，然后烧结镶嵌有珠粒的模制物料。

72. 发明公开

EP0449895A1 VERFAHREN ZUR HERSTELLUNG VON MECHANISCH FESTEN, PORÖSEN, DURCHSTRÖMBAREN BAUTEILEN AUS ALUMINIUMPULVER ODER -GRANULAT 失效
标题翻译：用于生产机械固体多孔，通过该组件的铝粉末或颗粒。
公开(公告)号：EP0449895A1
公开(公告)日：1991-10-09
申请号：EP90900751.0
申请日：1989-12-13
申请人： Jasny, Werner
发明人： JASNY, Werner
IPC分类号： B22F3
CPC分类号： B22F3/10 , B22F3/11 , B22F2003/1042
摘要： Procédé de fabrication d'éléments frittés à partir de poudre d'aluminium oxydée non traitée. Le matériau de base est versé en vrac dans un moule, sans adjonction d'adjuvants de frittage, et chauffé dans une atmosphère protectrice non oxydante jusqu'à la température de fusion du matériau de base. Ces éléments frittés ont une porosité proche de la porosité de départ puisque le prétraitement, par compression par exemple, n'est plus nécessaire.

73. 发明公开

EP0266313A3 Sintered alloy dental prosthetic device 失效
标题翻译：烧结合金牙齿前置装置
公开(公告)号：EP0266313A3
公开(公告)日：1989-12-06
申请号：EP87830110.0
申请日：1987-03-20
申请人： DENPAC CORP.
发明人： Bell, A. Milton , Gamberg, Murray G. , Kurzeja, Ronald
IPC分类号： A61K6/04 , A61C13/00
CPC分类号： A61K6/046 , A61C13/0003 , B22F3/1283 , B22F2003/1042 , C22C1/0466
摘要： This invention relates to biomechanical devices comprising a liquid sinterable metallic alloy, characterized by a multiphase, composite microstructure of isolated spherical grains approximately 50 microns in diameter distributed in an essentially nonporous matrix. The dental prosthetic divices include full-cast crowns, copings, pontics, inlays, onlays, and bridges. Other devices include reconstructive and orthopedic pieces. The ceramic portion of an alloy-ceramic assembly for the dental prosthetic device comprises the steps of:
(a) forming an impression of the prepared dental surface; (b) mixing a siliceous abutment die material having a thermal expansion between room temperature and 600 °C, greater than that of the alloy of step (f) between room temperature and 600 ° C that is from about 0.008 mm/mm to 0.015 mm/mm and a physical expansion between zero and about 0.03 mm/mm; (c) filling the impression with the abutment die material to form a die preform; (d) separating the preform from the impression; (e) firing the abutment die material at a temperature below 1500 °C to form a solid die having a replica of the surface; (f) covering the replica surface with a powdered metal alloy having an expansion coefficient between room temperature and 600 °C between 0.004 mm/mm and 0.015 mm/mm; (g) firing the alloy/replica composite under vacuum at a temperature between 900 °C and 1400 °C to form a coping of the single crown by sintering. Whereby the separation between the die and the alloy coping is from about 2 to about 25 microns.
摘要翻译：本发明涉及包括液体可烧结金属合金的生物力学装置，其特征在于分布在基本上无孔基质中的直径约50微米的孤立球形颗粒的多相复合微结构。牙科假肢包括全冠，护理，通气，镶嵌，镶嵌和桥梁。其他装置包括重建和矫形部件。用于牙科修复装置的合金 - 陶瓷组件的陶瓷部分包括以下步骤：（a）形成所制备的牙齿表面的印模; （b）将室温至600℃之间的热膨胀的硅质邻接模具材料与室温至600℃的步骤（f）的合金相比大于0.008mm / mm至0.015mm / mm，物理膨胀在零和约0.03mm / mm之间; （c）用所述基台模具材料填充所述印模以形成模具预制件; （d）将预成型件与印模分离; （e）在低于1500℃的温度下对邻接模具材料进行烧结以形成具有表面复制品的固体模具; （f）用0.004mm / mm至0.015mm / mm的膨胀系数在室温至600℃之间的粉末金属合金覆盖复制表面; （g）在900〜1400℃的温度下在真空下烧制合金/复合复合材料，通过烧结形成单冠顶盖。由此模具和合金对位之间的分离是约2至约25微米。

74. 发明公开

EP0266313A2 Sintered alloy dental prosthetic device 失效
标题翻译： Ausgesinterter Legierung bestehende Zahnprosese。
公开(公告)号：EP0266313A2
公开(公告)日：1988-05-04
申请号：EP87830110.0
申请日：1987-03-20
申请人： DENPAC CORP.
发明人： Bell, A. Milton , Gamberg, Murray G. , Kurzeja, Ronald
IPC分类号： A61K6/04 , A61C13/00
CPC分类号： A61K6/046 , A61C13/0003 , B22F3/1283 , B22F2003/1042 , C22C1/0466
摘要： This invention relates to biomechanical devices comprising a liquid sinterable metallic alloy, characterized by a multiphase, composite microstructure of isolated spherical grains approximately 50 microns in diameter distributed in an essentially nonporous matrix. The dental prosthetic divices include full-cast crowns, copings, pontics, inlays, onlays, and bridges. Other devices include reconstructive and orthopedic pieces.
The ceramic portion of an alloy-ceramic assembly for the dental prosthetic device comprises the steps of:

(a) forming an impression of the prepared dental surface;
(b) mixing a siliceous abutment die material having a thermal expansion between room temperature and 600 °C, greater than that of the alloy of step (f) between room temperature and 600 ° C that is from about 0.008 mm/mm to 0.015 mm/mm and a physical expansion between zero and about 0.03 mm/mm;
(c) filling the impression with the abutment die material to form a die preform;
(d) separating the preform from the impression;
(e) firing the abutment die material at a temperature below 1500 °C to form a solid die having a replica of the surface;
(f) covering the replica surface with a powdered metal alloy having an expansion coefficient between room temperature and 600 °C between 0.004 mm/mm and 0.015 mm/mm;
(g) firing the alloy/replica composite under vacuum at a temperature between 900 °C and 1400 °C to form a coping of the single crown by sintering.

Whereby the separation between the die and the alloy coping is from about 2 to about 25 microns.
摘要翻译：本发明涉及包括液体可烧结金属合金的生物力学装置，其特征在于分布在基本上无孔基质中的直径约50微米的孤立球形颗粒的多相复合微结构。牙科假肢包括全冠，护理，通气，镶嵌，镶嵌和桥梁。其他装置包括重建和矫形部件。用于牙科修复装置的合金 - 陶瓷组件的陶瓷部分包括以下步骤：（a）形成所制备的牙齿表面的印模; （b）将室温至600℃之间的热膨胀的硅质邻接模具材料与室温至600℃的步骤（f）的合金相比大于0.008mm / mm至0.015mm / mm，物理膨胀在零和约0.03mm / mm之间; （c）用所述基台模具材料填充所述印模以形成模具预制件; （d）将预成型件与印模分离; （e）在低于1500℃的温度下对邻接模具材料进行烧结以形成具有表面复制品的固体模具; （f）用0.004mm / mm至0.015mm / mm的膨胀系数在室温至600℃之间的粉末金属合金覆盖复制表面; （g）在900〜1400℃的温度下在真空下烧制合金/复合复合材料，通过烧结形成单冠顶盖。由此模具和合金对位之间的分离是约2至约25微米。

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