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41.发明授权
公开(公告)号：US4800064A
公开(公告)日：1989-01-24
申请号：US143864
申请日：1988-01-14
摘要： A process is disclosed for producing a sheet of tungsten heavy alloy which involves forming a solution of chemical compounds containing the metal values of the alloy in the correct proportion as in the alloy, crystallizing the compounds from solution and drying the compounds, reducing the compounds to their respective metals wherein each particle is an admixture of the allow components; forming a slurry of the metals and a liquid medium, removing the liquid medium from the metals and forming a planar cake of the metals, drying the cake, and sintering the cake to a density equal to or greater than about 90% of the theoretical density of the alloy to form the sheet.
摘要翻译： 公开了一种用于生产钨重合金片的方法，其涉及如合金中那样以正确的比例形成含有合金金属值的化合物溶液，使化合物从溶液中结晶并干燥化合物，将化合物还原成 其各自的金属，其中每个颗粒是允许组分的混合物; 形成金属和液体介质的浆液，从金属中除去液体介质并形成金属的平面饼状物，干燥滤饼并将饼状物烧结至等于或大于理论密度的约90％的密度 的合金形成片材。
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42.发明授权
公开(公告)号：US4792351A
公开(公告)日：1988-12-20
申请号：US140517
申请日：1988-01-04
CPC分类号： B22F9/22 , C22C33/0285
摘要： A process for producing powder particles comprises forming an aqueous solution of the metal values of iron, cobalt, nickel and molybdenum, said metals being present in a predetermined ratio, forming from the solution a reducible solid material selected from the group consisting of salts of said metals, oxides of said metals, hydroxides of said metals and mixtures thereof, and reducing said material to form irregular shaped metallic powder particles.
摘要翻译： 制造粉末颗粒的方法包括形成铁，钴，镍和钼的金属值的水溶液，所述金属以预定比例存在，从溶液中形成可还原固体材料，所述可还原固体材料选自所述 金属，所述金属的氧化物，所述金属的氢氧化物及其混合物，还原所述材料以形成不规则形状的金属粉末颗粒。
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43.发明授权
公开(公告)号：US4778515A
公开(公告)日：1988-10-18
申请号：US905015
申请日：1986-09-08
IPC分类号： B22F1/00
CPC分类号： B22F1/0048
摘要： A powdered material and a process for producing the material are disclosed. The powdered material consists essentially of iron group based and chromium based spherical particles. The material is essentially free of elliptical shaped material and elongated particles having rounded ends. The material has a particle size of less than about 20 micrometers. The process for making the spherical particles involves mechanically reducing the size of a starting material to produce a finer powder the major portion of which has a particle size of less than about 20 micrometers. The finer powder is entrained in a carrier gas and passed through a high temperature zone at a temperature above the melting point of the powder to melt at least about 50% by weight of the powder and form the spherical particles of the melted portion. The powder is then directly solidified.
摘要翻译： 公开了一种粉末材料及其制造方法。 粉末材料基本上由铁基和铬基球形颗粒组成。 该材料基本上不含椭圆形材料和具有圆形端部的细长颗粒。 该材料具有小于约20微米的粒度。 制造球形颗粒的方法包括机械地减小起始材料的尺寸以产生更细的粉末，其主要部分具有小于约20微米的粒度。 更细的粉末被夹带在载气中，并在高于粉末的熔点的温度下通过高温区域，以熔化至少约50重量％的粉末并形成熔融部分的球形颗粒。 然后将粉末直接固化。
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公开(公告)号：US4943322A
公开(公告)日：1990-07-24
申请号：US121421
申请日：1987-11-16
IPC分类号： B22F1/00
CPC分类号： B22F1/0048
摘要： A powdered material and a process for producing the material are disclosed. The powdered material consists essentially of titanium based spherical particles which are essentially free of elliptical shaped material and elongated particles having rounded ends. The material has a particle size of less than about 50 micrometers. The process for making the spherical particles involves mechanically reducing the size of a starting material to produce a finer powder which is then entrained in a carrier gas and passed through a high temperature zone above the melting point of the finer powder to melt at least about 50% by weight of the powder and form spherical particles of the melted portion. The powder is then directly solidified.
摘要翻译： 公开了一种粉末材料及其制造方法。 粉末材料基本上由基本上不含椭圆形材料的钛基球形颗粒和具有圆形端部的细长颗粒组成。 该材料具有小于约50微米的粒度。 制造球形颗粒的方法包括机械地减小起始材料的尺寸以产生更细的粉末，然后将其夹带在载气中，并通过高于较细粉末熔点的高温区域熔化至少约50 重量％的粉末，并形成熔融部分的球形颗粒。 然后将粉末直接固化。
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45.发明授权
公开(公告)号：US4923509A
公开(公告)日：1990-05-08
申请号：US121448
申请日：1987-11-16
IPC分类号： B22F1/00
CPC分类号： B22F1/0048
摘要： A powdered material and a process for producing the material are disclosed. The powdered material consists essentially of light metal based spherical particles which are essentially free of elliptical shaped material and elongated particles having rounded ends. The process for making the spherical particles involves mechanically reducing the size of a starting material to produce a finer powder which is then entrained in a carrier gas and passed through a high temperature zone above the melting point of the finer powder to melt at least about 50% by weight of the powder and form spherical particles of the melted portion. The powder is directly solidified.
摘要翻译： 公开了一种粉末材料及其制造方法。 粉末材料基本上由基本上不含椭圆形材料的轻金属基球形颗粒和具有圆形端部的细长颗粒组成。 制造球形颗粒的方法包括机械地减小起始材料的尺寸以产生更细的粉末，然后将其夹带在载气中，并通过高于较细粉末熔点的高温区域熔化至少约50 重量％的粉末，并形成熔融部分的球形颗粒。 粉末直接固化。
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公开(公告)号：US4900590A
公开(公告)日：1990-02-13
申请号：US292713
申请日：1989-01-03
CPC分类号： C23C24/00 , B22F1/02 , C23C18/1216 , C23C18/1241 , C23C18/1275
摘要： A method is disclosed for producing aluminum oxide coated iron powder which comprises contacting iron powder of fine particle size with a liquid aluminum compound wherein the aluminum is hydrolyzable and adding water to the compound and the iron powder to form a slurry, removing essentially all of the liquid from the slurry to produce iron powder with a coating of hydrolyzed aluminum oxide, and firing the iron powder with the hydrolyzed aluminum oxide coating in a non-oxidizing atmosphere to produce iron powder with a coating of aluminum oxide.
摘要翻译： 公开了一种用于生产氧化铝涂覆的铁粉的方法，该方法包括使细颗粒的铁粉与液体铝化合物接触，其中铝是可水解的，并向化合物和铁粉中加入水以形成浆料，基本上除去所有 液体从浆料中生产出具有水解氧化铝涂层的铁粉，并在非氧化性气氛中用水解的氧化铝涂层焙烧铁粉以产生具有氧化铝涂层的铁粉。
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公开(公告)号：US4836850A
公开(公告)日：1989-06-06
申请号：US121449
申请日：1987-11-16
IPC分类号： B22F1/00
CPC分类号： B22F1/0048
摘要： A powdered material and a process for producing the material are disclosed. The powdered material consists essentially of iron group based and chromium based spherical particles. The material is essentially free of elliptical shaped material and elongated particles having rounded ends. The material has a particle size of less than about 20 micrometers. The process for making the spherical particles involves mechanically reducing the size of a starting material to produce a finer powder the major portion of which has a particle size of less than about 20 micrometers. The finer powder is entrained in a carrier gas and passed through a high temperature zone at a temperature above the melting point of the powder to melt at least about 50% by weight of the powder and form the spherical particles of the melted portion. The powder is then directly solidified.
摘要翻译： 公开了一种粉末材料及其制造方法。 粉末材料基本上由铁基和铬基球形颗粒组成。 该材料基本上不含椭圆形材料和具有圆形端部的细长颗粒。 该材料具有小于约20微米的粒度。 制造球形颗粒的方法包括机械地减小起始材料的尺寸以产生更细的粉末，其主要部分具有小于约20微米的粒度。 更细的粉末被夹带在载气中，并在高于粉末的熔点的温度下通过高温区域，以熔化至少约50重量％的粉末并形成熔融部分的球形颗粒。 然后将粉末直接固化。
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公开(公告)号：US4832907A
公开(公告)日：1989-05-23
申请号：US143866
申请日：1988-01-14
摘要： A process is disclosed for producing a sheet of tungsten heavy alloy which involves uniformly blending elemental powder components of the alloy by forming a slurry of the powder components in a liquid medium, removing the liquid medium from the powders and forming a planar cake of the powders, drying the cake, sintering the cake to a density equal to or greater than about 90% of the theoretical density of the alloy to form the sheet.
摘要翻译： 公开了一种用于生产钨重合金片的方法，该方法涉及通过在液体介质中形成粉末成分的浆液，均匀混合合金的元素粉末成分，从粉末中除去液体介质并形成粉末的平面饼 ，将滤饼干燥，将滤饼烧结至等于或大于合金理论密度的约90％的密度以形成片材。
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49.发明授权
公开(公告)号：US4793969A
公开(公告)日：1988-12-27
申请号：US143869
申请日：1988-01-14
摘要： A process is disclosed for producing a sheet of tungsten heavy alloy which comprises forming metal particles of the alloy wherein each metal particle is a uniform admixture of the alloy components, entraining the particles in a carrier gas, passing the particles and the carrier gas into a high temperature zone at a temperature above the melting point of the matrix phase of the particles and maintaining the particles in the zone for a sufficient time to melt at least the matrix phase of the particles and form spherical particles, followed by rapidly and directly solidifying the high temperature treated material while the material is in flight. A slurry is formed of this high temperature treated material and a liquid medium, the liquid medium is removed from the material and a planar cake is formed of the material, the cake is dried, and sintered to a density equal to or greater than about 90% of the theoretical density of the alloy to form the sheet.
摘要翻译： 公开了一种用于生产钨重合金片的方法，其包括形成合金的金属颗粒，其中每个金属颗粒是合金组分的均匀混合物，将颗粒夹带在载气中，使颗粒和载气流入 在高于颗粒的基质相的熔点的温度下将高温区域保持在该区域中的颗粒至少熔化至少颗粒的基质相并形成球形颗粒，然后快速且直接固化 高温处理材料，同时材料在飞行中。 由该高温处理材料和液体介质形成浆料，从材料中除去液体介质，并由该材料形成平面的饼状物，将滤饼干燥并烧结至等于或大于约90的密度 合金的理论密度的百分比形成片材。
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公开(公告)号：US4783216A
公开(公告)日：1988-11-08
申请号：US904317
申请日：1986-09-08
IPC分类号： B22F1/00
CPC分类号： B22F1/0048 , Y10S75/956
摘要： A powdered material and a process for producing the material are disclosed. The powdered material consists essentially of titanium based spherical particles which are essentially free of elliptical shaped material and elongated particles having rounded ends. The material has a particle size of less than about 50 micrometers. The process for making the spherical particles involves mechanically reducing the size of a starting material to produce a finer powder which is then entrained in a carrier gas and passed through a high temperature zone above the melting point of the finer powder to melt at least about 50% by weight of the powder and form spherical particles of the melted portion. The powder is then directly solidified.
摘要翻译： 公开了一种粉末材料及其制造方法。 粉末材料基本上由基本上不含椭圆形材料的钛基球形颗粒和具有圆形端部的细长颗粒组成。 该材料具有小于约50微米的粒度。 制造球形颗粒的方法包括机械地减小起始材料的尺寸以产生更细的粉末，然后将其夹带在载气中，并通过高于较细粉末熔点的高温区域熔化至少约50 重量％的粉末，并形成熔融部分的球形颗粒。 然后将粉末直接固化。
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