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公开(公告)号：US20170304893A1
公开(公告)日：2017-10-26
申请号：US15520463
申请日：2015-12-01
CPC分类号： B22F1/0062 , B22F1/0011 , B22F1/02 , B22F3/10 , B22F2001/0066 , B22F2301/35 , B22F2302/40 , B22F2998/10 , C10M105/70 , C10M171/06 , C10M2215/08 , C10M2215/2225 , C10N2220/082 , C10N2230/06 , C10N2240/402 , C10N2240/58 , C10N2250/08 , C10N2250/18 , C10N2260/00 , C22C1/05 , B22F3/02 , B22F2003/023
摘要： One aspect of the present invention is a lubricant to be incorporated into a powder metallurgical mixed powder containing an iron-based powder. The lubricant includes a flaky organic material having an average particle diameter of from 0.1 μm to less than 3 μm. Another aspect of the present invention is a powder metallurgical mixed powder which contains an iron-based powder and the lubricant. Yet another aspect of the present invention is a method for producing a sintered compact. The method includes the step of mixing materials to give a powder metallurgical mixed powder containing an iron-based powder and the lubricant. The powder metallurgical mixed powder is compacted using a die to give a powder compact. The powder compact is sintered to give a sintered compact.
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公开(公告)号：US20180126454A1
公开(公告)日：2018-05-10
申请号：US15569008
申请日：2016-04-27
发明人： Nobuaki AKAGI
摘要： The mixed powder for iron-based powder metallurgy of the present invention comprises: at least one ternary oxide selected from the group consisting of Ca—Al—Si oxides and Ca—Mg—Si oxides, and at least one binary oxide selected from the group consisting of Ca—Al oxides and Ca—Si oxides. The ternary oxide and the binary oxide are contained in a sum weight of 0.025 wt % or more to 0.3 wt % or less.
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3.发明申请公开(公告)号：US20190283126A1
公开(公告)日：2019-09-19
申请号：US16464890
申请日：2017-11-01
发明人： Nobuaki AKAGI
摘要： The present invention relates to a powder mixture for iron-based powder metallurgy which is obtained by mixing an iron-based powder and at least one kind of powders selected from the group consisting of a Ca—Al—Si-based composite oxide powder and a Ca—Mg—Si-based composite oxide powder, in which with a peak height of a main phase exhibiting the highest peak intensity by X-ray diffraction as 100, the composite oxide powder has a relative height of 40% or less, with respect to the main phase, of a peak height of a second phase having the second highest peak intensity.
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公开(公告)号：US20180141117A1
公开(公告)日：2018-05-24
申请号：US15572611
申请日：2016-04-27
发明人： Nobuaki AKAGI
CPC分类号： B22F1/0059 , B22F1/02 , B22F2998/10 , C22C1/05 , C22C33/02 , C22C33/0221 , B22F3/02 , B22F3/10
摘要： The mixed powder for iron-based powder metallurgy of the present invention comprises an iron-based powder and a CaS raw material powder containing one or more selected from the group consisting of calcium sulfate anhydrite III, calcium sulfate anhydrite II, calcium sulfate dihydrate, calcium sulfide, and calcium sulfate hemihydrate. The CaS raw material powder is coated with at least one selected from a lubricant and a binder.
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5.发明申请公开(公告)号：US20180104739A1
公开(公告)日：2018-04-19
申请号：US15572725
申请日：2016-04-27
发明人： Nobuaki AKAGI
CPC分类号： B22F1/0014 , B22F3/10 , B22F9/04 , B22F2301/35 , B22F2302/35 , B22F2302/45 , B22F2304/058 , B22F2304/10 , B22F2998/10 , B22F2999/00 , C22C1/05 , C22C33/0221 , C22C33/0228 , B22F3/02 , B22F3/1007 , B22F2201/013 , B22F2201/02
摘要： The mixed powder for iron-based powder metallurgy of the present invention comprises a powder containing calcium sulfate anhydrite II such that the CaS weight ratio after sintering is 0.01 wt % or more to 0.1 wt % or less. The powder containing calcium sulfate anhydrite II preferably has a volume-average particle size of 0.1 μm or more to 60 μm or less and preferably additionally contains one or more ternary oxides selected from the group consisting of Ca—Al—Si oxides and Ca—Mg—Si oxides. The weight ratio of the ternary oxides and CaS after the sintering is preferably 3:7 to 9:1.
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6.发明申请IRON-BASED SOFT MAGNETIC POWDER FOR DUST CORE, METHOD FOR MANUFACTURING THE SAME, AND DUST CORE 审中-公开用于磁芯的基于铁的软磁粉，其制造方法和除尘芯公开(公告)号：US20150340138A1
公开(公告)日：2015-11-26
申请号：US14818846
申请日：2015-08-05
CPC分类号： H01F1/20 , B22F1/02 , B22F2998/00 , C22C2202/02 , C23C22/07 , C23C22/82 , H01F1/147 , H01F1/24 , H01F1/26 , H01F41/005 , H01F41/0246 , Y10T428/12181 , B22F2301/35 , B22F2302/45
摘要： An iron-based soft magnetic powder for dust core having a high magnetic flux density, maintaining high electric insulation even after annealing, and more excellent in the mechanical strength in which a coating film having a phosphate conversion coating film is formed on the surface thereof and the peak height for the absorption of hydroxyl groups formed at 3700 cm−1 to 2500 cm−1 is 0.04 or more being indicated by absorbance when the coating film is analyzed by infrared diffuse reflectance spectroscopy.
摘要翻译： 一种铁磁性软磁粉末，具有高的磁通密度，即使在退火之后也保持高的绝缘性，并且在其表面上形成具有磷酸盐转化膜的涂膜的机械强度更优异， 当通过红外漫反射光谱法分析涂膜时，通过吸光度表示在3700cm -1至2500cm -1处形成的羟基的吸收峰值为0.04以上。
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公开(公告)号：US20170266723A1
公开(公告)日：2017-09-21
申请号：US15309947
申请日：2015-05-14
发明人： Mitsuhiro SATO , Nobuaki AKAGI , Hironori SUZUKI
IPC分类号： B22F1/00
CPC分类号： B22F1/0003 , B22F1/0014 , B22F1/0059 , B22F1/02 , B22F2003/023 , B22F2301/10 , B22F2301/35 , B22F2302/40 , B22F2303/01 , B22F2304/10 , B22F2998/10 , C22C33/02 , C22C33/0207 , C22C38/00 , C22C38/002 , C22C38/02 , C22C38/04 , B22F3/02 , B22F3/10
摘要： An objective of the present invention is to provide a mixed powder for powder metallurgy that makes it possible to improve mold-filling ability and reduce spread in weight of molded bodies. The mixed powder for powder metallurgy according to the present invention is obtained by mixing a graphite powder with an average particle diameter D50 of 1.0 μm or more to 3.0 μm or less and D90 of 10 μm or less, without adding a binder, with an iron-based powder, while applying a sheer force. The thus obtained mixed powder for powder metallurgy according to the present invention is characterized by including the iron-based powder and the graphite powder present so as to be collected in concave portions of the iron-based powder.
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8.发明申请BINDER FOR POWDER METALLURGY, MIXED POWDER FOR POWDER METALLURGY, AND SINTERED BODY 审中-公开粉末冶金粉末，粉末冶金粉末和烧结体公开(公告)号：US20150361255A1
公开(公告)日：2015-12-17
申请号：US14762725
申请日：2014-02-17
摘要： The present invention provides a binder which has excellent effect on suppression of segregation or dust emission, while exhibiting excellent fluidity both at ordinary temperatures and at high temperatures. The present invention is a binder which is blended for use in a mixed powder for powder metallurgy, said mixed powder containing an iron-based powder and an auxiliary starting material powder. This binder is characterized by being composed of one or more polymers that are selected from among butene polymers having a melting point of from 50° C. to 85° C. (inclusive) and a heated melt fluidity at 190° C. of from 2.0 g/10 minutes to 3.6 g/10 minutes (inclusive) and methacrylic acid polymers having a weight average molecular weight of 1,000,000 or less.
摘要翻译： 本发明提供一种粘合剂，其在常温和高温下表现出优异的流动性，对抑制偏析或粉尘发射具有优异的效果。 本发明是混合用于粉末冶金用混合粉末的粘合剂，所述混合粉末含有铁基粉末和辅助原料粉末。 该粘合剂的特征在于由选自熔点为50℃至85℃（含）的丁烯聚合物中的一种或多种聚合物和在190℃下的加热熔融流动性为2.0 g / 10分钟至3.6g / 10分钟（含）和重均分子量为1,000,000以下的甲基丙烯酸聚合物。
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