RECYCLE METHODS FOR WATER BASED POWDER INJECTION MOLDING COMPOUNDS
    191.
    发明申请
    RECYCLE METHODS FOR WATER BASED POWDER INJECTION MOLDING COMPOUNDS 审中-公开
    用于水基粉末注射成型化合物的回收方法

    公开(公告)号:WO01091957A2

    公开(公告)日:2001-12-06

    申请号:PCT/US2001/016955

    申请日:2001-05-24

    Abstract: A process for adjusting the level of water or water soluble additives in aqueous-based powder injection molding compounds for the purpose of recycling scrap material, controlling shrinkage or rehydrating dry feedstock. Depending on the objective, the process may require material granulation equipment, equipment for the addition or removal of water and mixing equipment. The molding compounds may be comprised of either recycled scrap material before being heat-treated or dry, virgin feedstock material.

    Abstract translation: 用于调整水性粉末注射成型化合物中的水或水溶性添加剂的水平的方法,用于回收废料,控制收缩或再水化干原料。 根据目标,该过程可能需要物料造粒设备,用于添加或除去水和混合设备的设备。 成型化合物可以在被热处理或干燥的原始原料之前由再循环废料构成。

    PROCESS FOR THE PREPARATION OF AN IRON-BASED POWDER
    192.
    发明申请
    PROCESS FOR THE PREPARATION OF AN IRON-BASED POWDER 审中-公开
    制备基于铁粉的方法

    公开(公告)号:WO1998003291A1

    公开(公告)日:1998-01-29

    申请号:PCT/SE1997001292

    申请日:1997-07-18

    Inventor: HÖGANÄS AB

    Abstract: The invention concerns a process for producing a low-oxygen, low-carbon iron-based powder. The process comprises the steps of preparing a powder essentially consisting of iron and optionally at least one alloying element selected from the group consisting of chromium, manganese, copper, nickel, vanadium, niobium, boron, silicon, molybdenum, tungsten, decarburizing the powder in an atmosphere containing at least H2 and H2O gases, measuring the concentration of at least one of the carbon oxides (alternatively gases) formed during the decarburisation process, or measuring the oxygen potential in at least 2 points located at a predetermined distance from each other in the longitudinal direction of the furnace, adjusting the content of the H2O-gas in the decarburising atmosphere with the aid of the measurement. Another alternative concerns measuring the carbon oxides in combination with measuring the oxygen potential.

    Abstract translation: 本发明涉及一种生产低氧,低碳铁基粉末的方法。 该方法包括以下步骤:制备基本由铁组成的粉末和任选的至少一种选自铬,锰,铜,镍,钒,铌,硼,硅,钼,钨的合金元素,将粉末脱碳 含有至少H 2和H 2 O气体的气氛,测量在脱碳过程期间形成的至少一种碳氧化物(或气体)的浓度,或者以至少2个位置测量氧势,所述至少2个点位于彼此之间的预定距离 炉的纵向,借助于测量调节脱碳气氛中的H 2 O气体的含量。 另外一个考虑碳氧化物测量氧气潜力的方案。

    Stainless steel powder
    197.
    发明专利
    Stainless steel powder 审中-公开
    不锈钢粉

    公开(公告)号:JP2010196171A

    公开(公告)日:2010-09-09

    申请号:JP2010078105

    申请日:2010-03-30

    Abstract: PROBLEM TO BE SOLVED: To provide stainless steel powder which has improved compressibility based on water-atomized stainless steel powder, and to provide a process for producing the powder.
    SOLUTION: The invention concerns a process for producing low oxygen, essentially carbon-free stainless steel powder, which comprises the steps of preparing molten steel which in addition to iron contains carbon and at least 10% of chromium, adjusting the carbon content of the melt to a value which is decided by the expected oxygen content after water atomising, water-atomising the melt and annealing the as-atomized powder at a temperature of at least 1,120°C in a reducing atmosphere containing controlled amounts of water.
    COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题:提供一种基于水雾化的不锈钢粉末具有改善的压缩性的不锈钢粉末,并提供一种生产该粉末的方法。 解决方案:本发明涉及一种生产低氧,基本上不含碳的不锈钢粉末的方法,其包括以下步骤:制备除钢中含有碳和至少10%的铬的钢水,调节碳含量 的熔融值设定为由水雾化后的预期氧含量决定的值,对熔融物进行雾化,并在含有受控量的水的还原气氛中,在至少1120℃的温度下将雾化的粉末退火。 版权所有(C)2010,JPO&INPIT

    Manufacturing method of soft magnetic material
    200.
    发明专利
    Manufacturing method of soft magnetic material 有权
    软磁材料的制造方法

    公开(公告)号:JP2006049625A

    公开(公告)日:2006-02-16

    申请号:JP2004229500

    申请日:2004-08-05

    Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method of manufacturing a sintered body wherein soft magnetic powder whose principal component is inexpensive iron is used for a raw material and the surface of the soft magnetic powder has a tight and strong high electric resistance layer with simple processes.
    SOLUTION: Fe-Si alloy powder is heated in a weakly acidic environment to form an SiO
    2 oxide film on the surface, the powder is press-formed, and sintered in the weakly acidic environment to obtain the sintered body. A thin oxide film with high electric resistance and the Si of which is selectively oxidized is formed by executing a surface oxidation process in the weakly acidic environment using water vapor, and the powder is furthermore sintered in the weakly acidic environment to permit sintering while repairing the oxide film wherein cracks or the like are caused during press forming.
    COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题:提供一种制造烧结体的制造方法,其中使用主要成分为廉价的铁的软磁性粉末作为原料,并且软磁性粉末的表面具有紧密而强的高电阻 层次简单的过程。 解决方案:将Fe-Si合金粉末在弱酸性环境中加热,在表面形成SiO 2 SBO 2氧化物膜,将粉末压制成型,并在弱酸性环境下烧结 得到烧结体。 通过在弱酸性环境中使用水蒸汽进行表面氧化处理,形成具有高电阻且Si被选择性氧化的薄氧化膜,并且在弱酸性环境中进一步烧结粉末以允许烧结,同时修复 在冲压成形时产生裂纹等的氧化膜。 版权所有(C)2006,JPO&NCIPI

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