-
公开(公告)号：US20080277837A1
公开(公告)日：2008-11-13
申请号：US11630190
申请日：2004-06-28
Applicant: Jianxin Liu , Jeffrey McDaniel , Michael Rynerson , Howard Kuhn
Inventor： Jianxin Liu , Jeffrey McDaniel , Michael Rynerson , Howard Kuhn
IPC: B29C33/10
CPC classification number: B29C33/10 , B29C45/345 , B33Y80/00
Abstract: Gas permeable molds and mold segments having open porosity (60) are disclosed. Blind vents (56) in the mold wall's (54) outside surface (52) allow for an uninterrupted molding surface (62) while enhancing the gas permeability provided by the open porosity (60). Methods of making such gas permeable molds include forming them from sintered material. Methods also include the use of solid free-form fabrication followed by sintering. Also disclosed are unitary structures (150), for use in EPS bead molding, having a steam chest portion (152) with gas impermeable walls (156) and a mold section (154) having a gas permeable mold wall (172) having open porosity (176), and, optionally, open and/or blind vents (180, 178). Methods for making such unitary structures (150) include the use of solid free-form fabrication.
Abstract translation: 公开了具有开放孔隙率（60）的透气模具和模具段。 在模具壁（54）外表面（52）中的盲孔（56）允许不间断的模制表面（62），同时增强由开孔度（60）提供的气体渗透性。 制造这种透气模具的方法包括由烧结材料形成它们。 方法还包括使用固体自由形式制造，随后烧结。 还公开了一种用于EPS珠粒成型的单一结构（150），具有具有气体不可渗透壁（156）的蒸汽胸部（152）和具有开口孔隙的气体可渗透模壁（172）的模具部分（154） （176），以及可选地，打开和/或盲孔（180,178）。 制造这种单一结构（150）的方法包括使用固体自由形式的制造。
-
公开(公告)号：US20070110608A1
公开(公告)日：2007-05-17
申请号：US10580932
申请日：2003-12-01
Applicant: Jianxin Liu
Inventor： Jianxin Liu
IPC: B22F3/10
CPC classification number: B22F3/225 , B22F3/1007 , B22F2998/00 , B22F2999/00 , B33Y10/00 , B33Y40/00 , B33Y70/00 , C22C1/0416 , Y02P10/295 , B22F3/008 , B22F3/1055 , B22F2201/02 , B22F2201/05
Abstract: Methods for sintering aluminum powder comprise providing aluminum powder and heating the aluminum powder in a nitrogen atmosphere containing a partial pressure of water vapor in the range of about 0.001 kPa to about 0.020 kPa to sinter the aluminum powder to a transverse rupture strength of at least about 13.8 MPa. The aluminum powder is not pressed together by a mechanical force that substantially deforms particles of said aluminum powder either prior to or during the step of heating. Articles comprising sintered aluminum powder. The sintered aluminum powder has a transverse rupture strength of at least about 13.8 MPa. The microstructure of the sintered aluminum powder contains no compositional concentration gradients indicative of the use of a sintering aid and no evidence of particle deformation having occurred by an application of a mechanical force prior to or during the sintering of the aluminum powder.
Abstract translation: 烧结铝粉的方法包括提供铝粉末并在含有约0.001kPa至约0.020kPa范围内的水蒸气分压的氮气气氛中加热铝粉，以将铝粉末烧结至至少约的横向断裂强度 13.8MPa。 铝粉末不通过在加热步骤之前或加热步骤期间使铝粉末的颗粒基本上变形的机械力而被压在一起。 包含烧结铝粉末的制品。 烧结铝粉末的横向断裂强度为至少约13.8MPa。 烧结铝粉末的微结构不包含指示使用烧结助剂的组成浓度梯度，并且在铝粉烧结之前或期间不施加机械力而没有发生颗粒变形的迹象。
-
3.发明申请公开(公告)号：US20090007724A1
公开(公告)日：2009-01-08
申请号：US11666275
申请日：2004-11-02
Applicant: Jianxin Liu
Inventor： Jianxin Liu
Abstract: The structural integrity of a metal powder body during heat treatment is enhanced by the in situ formation of metal nanoparticles. The nanoparticles bond to one another and to the metal powder particles of the powder body during heat treatment to provide strength to the powder body prior to the operation of the physical phenomena which transform the powder body into a coherent article. The precursor or precursors from which the nanoparticles are derived are preferably metal salts which are added to the powder or powder body in the form of a solution. The use of conventional binders is optional.
Abstract translation: 通过原位形成金属纳米粒子，可以提高热处理过程中金属粉体的结构完整性。 在热处理期间，纳米颗粒彼此结合并与粉末体的金属粉末颗粒结合，以在操作将粉末体变成相干制品的物理现象之前向粉末体提供强度。 衍生出纳米颗粒的前体或前体优选是以溶液形式加入到粉末或粉体中的金属盐。 常规粘合剂的使用是可选的。
-
公开(公告)号：US07461684B2
公开(公告)日：2008-12-09
申请号：US10416148
申请日：2003-02-25
Applicant: Jianxin Liu , Michael L. Rynerson
Inventor： Jianxin Liu , Michael L. Rynerson
IPC: B22D19/14
CPC classification number: B22F7/06 , B22C9/04 , B22D19/00 , B22D19/14 , B22F3/1055 , B22F3/26 , B22F2998/10 , B29C64/00 , B33Y40/00 , B33Y80/00 , C22C1/1015 , C22C1/1036 , Y02P10/292 , Y02P10/295 , B22F3/008
Abstract: A method for producing a cast article comprises using a porous powder article as a sacrificial pattern. The porous powder article is preferably made using a rapid prototyping process. The porous powder article is used as a sacrificial pattern for a mold into which a molten metal is cast. Some embodiments include a step of proving the porous powder article with a ceramic coating. Methods of making molds and patterns using a porous powder article are also disclosed. The powder comprising the porous powder article may be a metal, ceramic or cermet. In some embodiments, the powder alloys with the molten casting metal. In some other embodiments, the powder and the casting metal form a composite. Sacrificial casting mold patterns comprising porous powder articles and casting molds comprising such sacrificial patterns are also disclosed.
Abstract translation: 制造铸造制品的方法包括使用多孔粉末制品作为牺牲图案。 多孔粉末制品优选使用快速成型方法制成。 多孔粉末制品被用作铸造熔融金属的模具的牺牲图案。 一些实施方案包括用陶瓷涂层证明多孔粉末制品的步骤。 还公开了使用多孔粉末制品制造模具和图案的方法。 包含多孔粉末制品的粉末可以是金属，陶瓷或金属陶瓷。 在一些实施例中，具有熔融铸造金属的粉末合金。 在一些其它实施方案中，粉末和铸造金属形成复合材料。 还公开了包括多孔粉末制品和包括这种牺牲图案的铸模的牺牲浇铸模型。
-
公开(公告)号：US20060083652A1
公开(公告)日：2006-04-20
申请号：US10801970
申请日：2004-03-16
Applicant: Jianxin Liu , Michael Ryneson
Inventor： Jianxin Liu , Michael Ryneson
CPC classification number: B22F1/0014 , B22F1/0003 , B22F2998/00 , B33Y70/00 , B33Y80/00 , Y02P10/295 , B22F3/1035 , B22F3/008 , B22F3/1055
Abstract: A green article comprising an A-B powder mixture and methods of manufacturing such green articles and corresponding sintered articles are disclosed. The A-B powder mixture consists of a minor volume fraction of a relatively fine powder A and a complementary major volume fraction of a relatively coarse prealloyed powder B wherein the A-B powder mean particle size ratio is at least about 1:5. Metal powder A consists of one or more elemental metals or alloys which has a melting or solidus temperature above the highest sintering temperature at which the A-B powder mixture may be sintered without slumping. Prealloyed metal powder B consists of one or more alloys which are amenable to supersolidus liquid phase sintering. Green articles made from the A-B powder have a wider sintering temperature window than do articles made from prealloyed metal powder B alone.
Abstract translation: 公开了一种包含A-B粉末混合物的绿色制品及其生产方法和相应的烧结制品。 A-B粉末混合物由相当细的粉末A的较小体积分数和相对粗的预合金粉末B的互补主体积分数组成，其中A-B粉末平均粒度比为至少约1:5。 金属粉末A由一种或多种元素金属或合金组成，其熔点或固相线温度高于最高烧结温度，在该温度下A-B粉末混合物可以烧结而不塌陷。 预合金金属粉末B由一种或多种适合于超固相液相烧结的合金组成。 由A-B粉末制成的绿色制品比单独预合金属粉末B制成的制品具有更宽的烧结温度窗口。
-
Patent Agency Ranking
公开(公告)号：US06999826B1
公开(公告)日：2006-02-14
申请号：US09195129
申请日：1998-11-18
Applicant: Jian Zhou , Jianxin Liu , Zhengran Li
Inventor： Jian Zhou , Jianxin Liu , Zhengran Li
Abstract: A computer readable memory to direct a computer to improve the perceived audio quality of a speaker included in that computer. The computer readable memory stores a first, second and third set of instructions. The first set of instructions causes the computer to determine the speaker type. The second set of instructions causes the computer to select a set of default filter coefficients for a digital filter based upon the speaker type. Finally, the third set of instructions causes the computer to realize a digital parametric equalizer using a digital filter and the set of default filter coefficients. Thus, the digital filter alters the audio signal that is input to the speaker, thereby improving the perceived quality of the speaker.
Abstract translation: 一种用于引导计算机以改善包含在该计算机中的扬声器的感知音频质量的计算机可读存储器。 计算机可读存储器存储第一，第二和第三组指令。 第一组指令使计算机确定扬声器类型。 第二组指令使计算机基于扬声器类型为数字滤波器选择一组默认滤波器系数。 最后，第三组指令使计算机使用数字滤波器和一组默认滤波器系数来实现数字参数均衡器。 因此，数字滤波器改变输入到扬声器的音频信号，从而提高扬声器的感知质量。
-
公开(公告)号：US06746506B2
公开(公告)日：2004-06-08
申请号：US10194409
申请日：2002-07-12
Applicant: Jianxin Liu , Michael L. Ryneson
Inventor： Jianxin Liu , Michael L. Ryneson
IPC: B22F300
CPC classification number: B22F1/0014 , B22F1/0003 , B22F2998/00 , B33Y70/00 , B33Y80/00 , Y02P10/295 , B22F3/1035 , B22F3/008 , B22F3/1055
Abstract: A green article comprising an A-B powder mixture and methods of manufacturing such green articles and corresponding sintered articles are disclosed. The A-B powder mixture consists of a minor volume fraction of a relatively fine powder A and a complementary major volume fraction of a relatively coarse prealloyed powder B wherein the A-B powder mean particle size ratio is at least about 1:5. Metal powder A consists of one or more elemental metals or alloys which has a melting or solidus temperature above the highest sintering temperature at which the A-B powder mixture may be sintered without slumping. Prealloyed metal powder B consists of one or more alloys which are amenable to supersolidus liquid phase sintering. Green articles made from the A-B powder have a wider sintering temperature window than do articles made from prealloyed metal powder B alone.
Abstract translation: 公开了一种包含A-B粉末混合物的绿色制品及其生产方法和相应的烧结制品。 A-B粉末混合物由相当细的粉末A的较小体积分数和相对粗的预合金粉末B的互补主体积分数组成，其中A-B粉末平均粒度比为至少约1:5。 金属粉末A由一种或多种元素金属或合金组成，其熔点或固相线温度高于最高烧结温度，在该温度下A-B粉末混合物可以烧结而不塌陷。 预合金金属粉末B由一种或多种适合于超固相液相烧结的合金组成。 由A-B粉末制成的绿色制品比单独预合金属粉末B制成的制品具有更宽的烧结温度窗口。
-
公开(公告)号：US07517492B2
公开(公告)日：2009-04-14
申请号：US10580932
申请日：2003-12-01
Applicant: Jianxin Liu
Inventor： Jianxin Liu
IPC: B22F3/10
CPC classification number: B22F3/225 , B22F3/1007 , B22F2998/00 , B22F2999/00 , B33Y10/00 , B33Y40/00 , B33Y70/00 , C22C1/0416 , Y02P10/295 , B22F3/008 , B22F3/1055 , B22F2201/02 , B22F2201/05
Abstract: Methods for sintering aluminum powder comprise providing aluminum powder and heating the aluminum powder in a nitrogen atmosphere containing a partial pressure of water vapor in the range of about 0.001 kPa to about 0.020 kPa to sinter the aluminum powder to a transverse rupture strength of at least about 13.8 MPa. The aluminum powder is not pressed together by a mechanical force that substantially deforms particles of said aluminum powder either prior to or during the step of heating. Articles comprising sintered aluminum powder. The sintered aluminum powder has a transverse rupture strength of at least about 13.8 MPa. The microstructure of the sintered aluminum powder contains no compositional concentration gradients indicative of the use of a sintering aid and no evidence of particle deformation having occurred by an application of a mechanical force prior to or during the sintering of the aluminum powder.
Abstract translation: 烧结铝粉的方法包括提供铝粉末并在含有约0.001kPa至约0.020kPa范围内的水蒸气分压的氮气气氛中加热铝粉，以将铝粉末烧结至至少约的横向断裂强度 13.8MPa。 铝粉末不通过在加热步骤之前或加热步骤期间使铝粉末的颗粒基本上变形的机械力而被压在一起。 包含烧结铝粉末的制品。 烧结铝粉末的横向断裂强度为至少约13.8MPa。 烧结铝粉末的微结构不包含指示使用烧结助剂的组成浓度梯度，并且在铝粉烧结之前或期间不施加机械力而没有发生颗粒变形的迹象。
-
公开(公告)号：US06585930B2
公开(公告)日：2003-07-01
申请号：US09842618
申请日：2001-04-25
Applicant: Jianxin Liu , Michael Rynerson
Inventor： Jianxin Liu , Michael Rynerson
IPC: B22F310
CPC classification number: B22F7/00 , B22F1/0059 , B22F3/008 , B22F2998/00 , B33Y10/00 , B33Y70/00 , C04B35/636 , Y02P10/295 , B22F5/007 , B22F3/1055
Abstract: A binder, and a method of using it in conventional powder metallurgy processes and solid free form fabrication including metal powder, or combinations of metals and ceramics, in which the binder contains at least one carbohydrate as the active binding compound. The carbohydrate generally contains between 6 and about 900 carbon atoms and may be selected from various categories including but not limited to: 1) monosaccharides; 2) disaccharides; 3) trisaccharides; and 4) polysaccharides containing the base sugars identified in 1)-3) above; and 5) hydrolyzed starches in which the hydrolysate contains between about 6-900 carbon atoms, including dextrins such as limit dextrin, hydrolyzed amylose, and hydrolyzed amylopectin. The amount of carbohydrate in the binder solution is generally on the order of about 5-50 grams carbohydrate per 100 ml of carrier solution, more preferably 5-30 g/ml, and most preferably 15 g/ml (or comparable amounts on a dry basis).
Abstract translation: 粘合剂及其在常规粉末冶金工艺和固体自由形式制造中的使用方法，包括金属粉末或金属和陶瓷的组合，其中粘合剂含有至少一种碳水化合物作为活性结合化合物。 碳水化合物通常含有6至约900个碳原子，并且可以选自各种类型，包括但不限于：1）单糖; 2）二糖; 3）三糖; 和4）含有上述1）-3）中鉴定的基础糖的多糖; 和5）其中水解产物含有约6-900个碳原子的水解淀粉，包括糊精如极限糊精，水解的直链淀粉和水解的支链淀粉。 粘合剂溶液中的碳水化合物的量通常为每100毫升载体溶液约5-50克碳水化合物量，更优选5-30克/毫升，最优选15克/毫升（或干燥时可比较量） 基础）。
-
公开(公告)号：US07070734B2
公开(公告)日：2006-07-04
申请号：US10801970
申请日：2004-03-16
Applicant: Jianxin Liu , Michael L. Ryneson
Inventor： Jianxin Liu , Michael L. Ryneson
CPC classification number: B22F1/0014 , B22F1/0003 , B22F2998/00 , B33Y70/00 , B33Y80/00 , Y02P10/295 , B22F3/1035 , B22F3/008 , B22F3/1055
Abstract: A green article comprising an A-B powder mixture and methods of manufacturing such green articles and corresponding sintered articles are disclosed. The A-B powder mixture consists of a minor volume fraction of a relatively fine powder A and a complementary major volume fraction of a relatively coarse prealloyed powder B wherein the A-B powder mean particle size ratio is at least about 1:5. Metal powder A consists of one or more elemental metals or alloys which has a melting or solidus temperature above the highest sintering temperature at which the A-B powder mixture may be sintered without slumping. Prealloyed metal powder B consists of one or more alloys which are amenable to supersolidus liquid phase sintering. Green articles made from the A-B powder have a wider sintering temperature window than do articles made from prealloyed metal powder B alone.
Abstract translation: 公开了一种包含A-B粉末混合物的绿色制品及其生产方法和相应的烧结制品。 A-B粉末混合物由相当细的粉末A的较小体积分数和相对粗的预合金粉末B的互补主体积分数组成，其中A-B粉末平均粒度比为至少约1:5。 金属粉末A由一种或多种元素金属或合金组成，其熔点或固相线温度高于最高烧结温度，在该温度下A-B粉末混合物可以烧结而不塌陷。 预合金金属粉末B由一种或多种适合于超固相液相烧结的合金组成。 由A-B粉末制成的绿色制品比单独预合金属粉末B制成的制品具有更宽的烧结温度窗口。
-
-
-
-
-
-
-
-
-
Search Results
12
records
(took 0.017 seconds)
