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1. 发明授权

US5482672A Process for extruding tantalum and/or niobium 失效
标题翻译：挤出钽和/或铌的方法
公开(公告)号：US5482672A
公开(公告)日：1996-01-09
申请号：US386065
申请日：1995-02-09
申请人： Ira Friedman , Christer Aslund
发明人： Ira Friedman , Christer Aslund
IPC分类号： B22F3/20 , C22C1/04 , B22F3/12 , B22F3/16
CPC分类号： B22F3/20 , C22C1/045
摘要： The process for extruding tantalum or niobium includes sealing a cold isostatically pressed charge of tantalum or niobium powder in a first metal cylinder and then sealing the first cylinder in a second metal cylinder with a metal powder of spherical shape in a gap between the cylinders. Thereafter, the second cylinder is cold isostatically pressed to prevent the metal powder in the gap from segregating. This is followed by heating and extrusion of the second container to form, e.g. an extruded bar. The ends of the bar and the skin on the bar can be removed to obtain a rod of tantalum (or niobium) with a yield of from 95% to 96% of the original powder.
摘要翻译：挤出钽或铌的方法包括在第一金属圆筒中密封均压的钽或铌粉末的电荷，然后在第二金属圆筒之间的气缸中的间隙中将第一圆柱体与球形形状的金属粉末密封。此后，将第二气缸冷静压，以防止间隙中的金属粉末分离。随后加热和挤压第二容器以形成例如第二容器。一个挤压棒。棒材的末端和棒上的皮肤可以被除去，得到钽（或铌）棒，其产率为原始粉末的95％至96％。

2. 发明授权

US5445787A Method of extruding refractory metals and alloys and an extruded product made thereby 失效
$Method of extruding refractory metals and alloys and an extruded product made thereby$
标题翻译：挤出难熔金属和合金以及由此制成的挤出产品的方法
公开(公告)号：US5445787A
公开(公告)日：1995-08-29
申请号：US146788
申请日：1993-11-02
申请人： Ira Friedman , Christer Aslund
发明人： Ira Friedman , Christer Aslund
IPC分类号： B22F3/20 , B22F7/06 , C22C1/04 , B22F3/16
CPC分类号： B22F3/20 , B22F7/06 , C22C1/045
摘要： The process of forming an extruded product of tantalum or niobium requires a cold isostatic pressing of a charge of the powder to a density sufficient to form a green compact which is then placed in a capsule. The capsule is then sealed and heated to a temperature and for a time sufficient to anneal the green compact. Thereafter, the capsule and encapsulated compact are subjected to a cold isostatic pressing to achieve a density of from 70% to 85%. This is followed by subsequent heating and extrusion of the heated capsule and encapsulated compact to form the extruded product. The outer layer on the capsule which has been formed by the capsule material can be removed, as by pickling, in the case of the capsule being a carbon steel.
摘要翻译：形成钽或铌的挤出产物的过程需要将粉末的电荷进行冷均衡压制至足以形成生坯的密度，然后将其放入胶囊中。然后将胶囊密封并加热至足以退火生坯的温度和时间。此后，将胶囊和包封的压块进行冷等静压，以达到70％至85％的密度。随后加热和挤出加热的胶囊和包封的压块以形成挤压产品。在胶囊为碳钢的情况下，由胶囊材料形成的胶囊上的外层可以通过酸洗被除去。

3. 发明授权

US4401723A Capsules and pressings for extruding objects, particularly tubes, and a process for producing the capsules and pressings 失效
标题翻译：用于挤出物体，特别是管的胶囊和压制件以及用于制造胶囊和压制物的方法
公开(公告)号：US4401723A
公开(公告)日：1983-08-30
申请号：US88479
申请日：1979-10-26
申请人： Christer Aslund , Ake Akerman , Hans Eriksson , Benny Flodin
发明人： Christer Aslund , Ake Akerman , Hans Eriksson , Benny Flodin
IPC分类号： B22F3/12 , B22F3/20 , B22F3/00
CPC分类号： B22F3/1258 , B22F3/20 , Y10T428/12069 , Y10T428/12097
摘要： This invention relates to a capsule for pressings pressed by isostatic pressure and to these pressings used for extruding metallic objects, particularly tubes, of stainless steel, the outer and inner wall of the capsule consisting of thin-walled sheet metal, and at least the outer wall having substantially the same strength properties in the axial direction over its circumference and particularly consisting of a spiral-welded tube and being preferrably provided with a bulge which is directed outwardly against the shrinkage occurring during isostatic pressing, and at least on the front end of the capsule an insert being provided, which consists of one or more pieces of a ductile solid material or a ductile material pressed from powder. The invention further relates to a process for the production of such capsules and pressings and to a process for extruding tubes and to the tubes obtained according to this process.
摘要翻译：本发明涉及一种用等压压力挤压的胶囊，以及用于挤压金属物体，特别是不锈钢管的压制件，胶囊的外壁和内壁由薄壁金属板组成，至少外壳壁在其圆周上在轴向上具有基本上相同的强度特性，特别是由螺旋焊接管组成，并且优选地设置有凸出部，其抵抗等静压过程中发生的收缩，并且至少在前端所述胶囊是提供的一种插入物，其由一种或多种延性固体材料或从粉末压制的延性材料组成。本发明还涉及一种生产这种胶囊和压制物的方法，以及用于挤出管子和根据该方法获得的管子的方法。

4. 发明授权

US4284439A Process for the production of sheet and strip from ferritic, stabilized, stainless chromium-molybdenum-nickel steels 失效
标题翻译：从铁素体稳定的不锈铬钼镍钢生产板材和带材的工艺
公开(公告)号：US4284439A
公开(公告)日：1981-08-18
申请号：US114087
申请日：1979-04-17
申请人： Goran Gemmel , Christer Aslund
发明人： Goran Gemmel , Christer Aslund
IPC分类号： C22C38/00 , C21D6/00 , C21D8/02 , C21D9/46 , C22C38/44
CPC分类号： C22C38/44 , C21D6/002 , C21D8/0205
摘要： PCT No. PCT/EP78/00011 Sec. 371 Date Apr. 17, 1979 Sec. 102(e) Date Apr. 17, 1979 PCT Filed Aug. 16, 1978 PCT Pub. No. WO79/00100 PCT Pub. Date Mar. 8, 1979A process for the production of sheet an strip from ferritic, stabilized, stainless chromium-molybdenum-nickel steels by hot-rolling of cast blocks to form heavy plate or crude strip and subsequent cold-rolling to the required thickness, wherein the blocks are hot-rolled at temperatures above about 850.degree. C. to form heavy plate or crude strip and, immediately afterwards, the heavy plate or crude strip thus formed is suddenly (rapidly) quenched with water to a temperature just below 450.degree. C. and subsequently annealed, the annealing step being followed by sudden (rapid) cooling from temperatures above about 850.degree. C. to temperatures below 500.degree. C.
摘要翻译： PCT No.PCT / EP78 / 00011 Sec。 371日期：1979年4月17日 102（e）日期1979年4月17日PCT提交1978年8月16日PCT公布。第WO79 / 00100号公报日期1979年3月8日通过铸造块的热轧，从铁素体稳定的不锈钢铬钼镍钢生产钢带的方法，以形成厚板或粗钢带，随后冷轧至所需厚度，其中将块在高于约850℃的温度下热轧，以形成厚板或粗条，并且立即将由此形成的厚板或粗条突然（快速）用水淬火至刚好低于450℃的温度然后退火，退火步骤之后是从高于约850℃的温度骤冷（快速）冷却到低于500℃的温度。

5. 发明授权

US4584170A Method of making pipes by powder metallurgy and pipe blanks (semi-finished products) made in accordance therewith 失效
标题翻译：根据粉末冶金和管坯（半成品）制造管道的方法
公开(公告)号：US4584170A
公开(公告)日：1986-04-22
申请号：US668295
申请日：1984-11-05
申请人： Christer Aslund , Claes Tornberg
发明人： Christer Aslund , Claes Tornberg
IPC分类号： B22F3/12 , B22F3/20 , B22F7/00
CPC分类号： B22F3/20 , B22F3/1258 , Y10T428/1209 , Y10T428/12097 , Y10T428/13
摘要： A method of making pipes by powder metallurgy, in which powder of metal and/or metal alloys (17) is filled into a thin-walled casing consisting of inner pipe wall (12), outer pipe wall (11) and a bottom (13), subsequently the casing is closed on its side remote from the bottom (13) by an annular cover (14) and is subjected to a cold-isostatic pressure whereby the powder (17) is compacted within the casing to produce a solid or dimensionally stable pipe blank or compact (10), which is then hot-worked, e.g. extruded. In order to prevent thermal cracks on the inner pipe or inner pipe wall (12), especially in the region of the ends thereof, the inner pipe or inner pipe wall (12) is provided prior to hot-working on at least one end region thereof with at least one circumferentially extending bulge (15 or 16, respectively).
摘要翻译：一种通过粉末冶金制造管道的方法，其中将金属和/或金属合金（17）的粉末填充到由内管壁（12），外管壁（11）和底部（13）组成的薄壁壳体中），随后壳体通过环形盖（14）在其远离底部（13）的一侧封闭，并经受冷等静压力，由此粉末（17）在壳体内压实以产生固体或尺寸稳定的管坯或紧密（10），然后热加工，例如挤出。为了防止内管或内管壁（12）上的热裂纹，特别是其端部区域中，内管或内管壁（12）在热作用之前提供至少一个端部区域具有至少一个周向延伸的凸起（分别为15或16）。

6. 发明授权

US4139377A Ferritic chrome steels of high notched bar impact strength and method of making same 失效
标题翻译：高切口铁素体铬钢冲击强度及其制作方法
公开(公告)号：US4139377A
公开(公告)日：1979-02-13
申请号：US755805
申请日：1976-12-30
申请人： Sigvard Bergh , Goran Gemmel , Christer Aslund
发明人： Sigvard Bergh , Goran Gemmel , Christer Aslund
IPC分类号： C22C33/02 , B22F3/00
CPC分类号： C22C33/0285
摘要： A method for producing stabilized ferritic stainless chrome steels which are distinguished in the welded state by high notched bar impact strength, wherein in powder-metallurginal manner by atomizing melts of the said chrome steels under argon a powder is produced which is pressed and agglomerated in known manner and that the pressed bodies are finally brought by hot or cold working into the desired semi-finished product form, preferably sheet form.
摘要翻译：一种用于生产稳定的铁素体不锈钢的方法，其在焊接状态下通过高切口条冲击强度而不同，其中以粉末冶金方式通过在氩气下雾化所述铬钢的熔体而产生粉末，其被挤压和凝聚在已知的并且压制体最终通过热或冷加工进入期望的半成品形式，优选片状。

7. 发明授权

US4050143A Method of producing dense metal tubes or the like 失效
标题翻译：生产密集金属管等的方法
公开(公告)号：US4050143A
公开(公告)日：1977-09-27
申请号：US569264
申请日：1975-04-18
申请人： Christer Aslund
发明人： Christer Aslund
IPC分类号： B22F3/04 , B22F3/12 , B22F3/20 , B22F5/00 , B22F3/24
CPC分类号： B22F3/04 , B22F3/1208 , B22F3/20 , Y10S29/031
摘要： A method and a capsule and a blank for producing tubes, bars or similar profiled elongated dense metal objects, preferably in stainless steel qualities, by single or multi-stage extrusion of capsules which are filled with powder of metals or metal alloys or mixtures thereof or with mixtures of powder of metals and/or metal alloys with ceramic powder and sealed and which are adapted in their form to the desired object or intermediate product, as starting material a powder being used which consists at least predominantly of substantially spherical grains and the capsule filled with said powder and sealed being compressed by means of cold-isostatic pressure acting all round until the density of the powder reaches at least 80% of the theoretical density.
摘要翻译：一种用于生产管，棒或类似的细长致密金属物体的方法和胶囊，用于生产管，条或类似的细长致密金属物体，优选地以不锈钢质量，通过填充有金属或金属合金或其混合物的粉末的胶囊的单级或多级挤出，或金属和/或金属合金粉末与陶瓷粉末的混合物，并且被密封并且以其形式适应于期望的物体或中间产物作为起始材料，使用的粉末至少主要由基本上为球形的颗粒组成，并且胶囊填充所述粉末并通过全等温度的等压静压压缩，直到粉末的密度达到理论密度的至少80％。

8. 发明授权

US5460641A Metallic powder for producing pieces by compression and sintering, and a process for obtaining this powder 失效
标题翻译：用于通过压缩和烧结制造片的金属粉末以及获得该粉末的方法
公开(公告)号：US5460641A
公开(公告)日：1995-10-24
申请号：US268117
申请日：1994-07-06
申请人： Christer Aslund , Claude Quichaud
发明人： Christer Aslund , Claude Quichaud
IPC分类号： B22F1/00
CPC分类号： B22F1/0059 , B22F1/0096
摘要： The invention is concerned with the production of pieces by powder metallurgy, and, more particularly, the use of powders with spherical particles, such as those obtained by pulverisation, in a gas of a liquid metal or alloy.The metallic powder according to the invention is constituted by granules, each of these comprising an assembly of spherical particles which have been agglomerated by at least 0.5% of gelatin.This powder is prepared by mixing with the spherical particles an aqueous solution of gelatin; a paste is thus obtained which is broken in such a way that granules are obtained by calibration and drying.Application to the production of pieces made of non-oxidising, fire-proof, or other, steels or alloys.
摘要翻译：本发明涉及通过粉末冶金制造件，更具体地说，使用具有球形颗粒的粉末，例如通过粉碎获得的粉末在液态金属或合金气体中的用途。根据本发明的金属粉末由颗粒组成，其中的每一个包括已经通过至少0.5％的明胶凝聚的球形颗粒的组合。该粉末通过与球形颗粒混合形成明胶水溶液; 由此获得以通过校准和干燥获得颗粒的方式破碎的糊状物。适用于生产非氧化，防火或其他钢或合金制成的零件。

9. 发明授权

US4150196A Method of producing tubes or the like and capsule for carrying out the method as well as blanks and tubes according to the method 失效
标题翻译：根据该方法生产用于实施该方法以及坯料和管的管等和胶囊的方法
公开(公告)号：US4150196A
公开(公告)日：1979-04-17
申请号：US743981
申请日：1976-11-22
申请人： Christer Aslund
发明人： Christer Aslund
IPC分类号： B22F3/04 , B22F3/12 , B22F3/20 , B22F3/00 , B22F5/00
CPC分类号： B22F3/1208 , B22F3/04 , B22F3/20 , Y10T428/12097 , Y10T428/12139 , Y10T428/12229 , Y10T428/12403
摘要： A method and a capsule and a blank for producing tubes, bars or similar profiled elongated dense metal objects, preferably in stainless steel qualities, by single or multi-stage extrusion of capsules which are filled with powder of metals or metal alloys or mixtures thereof or with mixtures of powder of metals and/or metal alloys with ceramic powder and sealed and which are adapted in their form to the desired object or intermediate product, as starting material a powder being used which consists at least predominantly of substantially spherical grains and the capsule filled with said powder and sealed being compressed by means of cold-isostatic pressure acting all round until the density of the powder reaches at least 80% of the theoretical density.

10. 发明授权

US4565668A Method of making powder-metallurgical articles 失效
标题翻译：制造粉末冶金制品的方法
公开(公告)号：US4565668A
公开(公告)日：1986-01-21
申请号：US668296
申请日：1984-11-05
申请人： Christer Aslund , Claes Tornberg
发明人： Christer Aslund , Claes Tornberg
IPC分类号： B22F3/04 , B22F3/12 , B22F5/12 , B28B3/00 , B30B11/00 , C04B35/64 , C04B35/645 , B22F1/00
CPC分类号： B22F3/04 , B22F3/1233 , B22F3/1241 , Y10S29/031 , Y10T428/1359 , Y10T428/2975
摘要： A method of making powder-metallurgical articles, in which powder of metal and/or metal alloys is filled into a thin-walled casing, whereupon the casing is closed and subjected to cold-isostatic pressure. Thereby the powder within the casing is compacted to form a strong or, respectively, dimensionally stable article. When the casing wall includes a joining weld seam, said casing wall is provided with an elastically expandable layer in the close vicinity of the weld seam in order to prevent formation of a fold, preferably in such a way that an approximately uniform prestress is applied to the wall surface.
摘要翻译：一种制造粉末冶金制品的方法，其中将金属和/或金属合金的粉末填充到薄壁壳体中，由此封闭壳体并进行冷等静压。因此，壳体内的粉末被压实以形成强的或分别尺寸稳定的制品。当壳体壁包括接合焊缝时，所述壳体壁在焊缝附近设置有可弹性膨胀的层，以防止形成折痕，优选地，使得大致均匀的预应力施加到墙面。

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