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    • 9. 发明专利
    • Metal material having hollow structure
    • 具有中空结构的金属材料
    • JP2014005495A
    • 2014-01-16
    • JP2012141512
    • 2012-06-23
    • Hisanori Makuta寿典 幕田Takeshi Murasawa剛 村澤
    • MAKUTA HISANORIMURASAWA TAKESHI
    • C22C1/10B22D19/14
    • PROBLEM TO BE SOLVED: To solve the problem that although a casting method using a thickening material and a foam core material at the time of melting or a powder method mixing and molding a metal powder with a polymeric material are used as conventional methods for manufacturing a metal material having a hollow structure, control of cell morphology is impossible, the size of a void is milli order, and manufacturing of a metal powder is difficult and dangerous, to impart a hollow structure inside metal.SOLUTION: By adding particles having a hollow structure into a metal in a molten state at a suitable ratio, forming secondary particles having the hollow particles adhered around a metal particle by mixing, and adding the secondary particles to the molten metal at a suitable ratio and solidifying the resultant mixture by additional mixing, a metal material of which the cross section has an annular or dendritic hollow structure is formed.
    • 要解决的问题为了解决在熔融时使用增稠材料和泡沫芯材料的铸造方法或使用聚合物材料混合和模塑金属粉末的粉末方法的常规方法用于制造 具有中空结构的金属材料,细胞形态的控制是不可能的,空隙的尺寸是毫米级的,并且制造金属粉末是困难和危险的,以在金属内部赋予中空结构。溶液:通过添加具有中空的颗粒 以适当的比例结构成熔融状态的金属,通过混合形成具有粘附在金属颗粒周围的中空颗粒的二次颗粒,并以适当的比例将二次颗粒加入到熔融金属中,并通过另外的混合固化所得混合物, 形成具有环状或树突状中空结构的金属材料。
    • 10. 发明专利
    • Method of producing composite material formed by composite of matrix metal and solid-phase fine particles, and metal bonded grinding wheel produced by the same
    • 通过基体金属和固相微粒子的复合物形成的复合材料的生产方法和由其制造的金属粘结的研磨轮
    • JP2013198928A
    • 2013-10-03
    • JP2012068658
    • 2012-03-26
    • Nagoya Institute Of Technology国立大学法人 名古屋工業大学
    • SATO TAKASHIMIZUNO RYOKUNIMINE TAKAHIROWATANABE YOSHIMI
    • B22D19/00B22D13/02B22D19/06B22D19/14B22D19/16B24D3/00B24D3/06C22C1/10C22C9/00C22C26/00
    • PROBLEM TO BE SOLVED: To solve such a problem that the distribution of grinding particles of a metal bonded grinding wheel to be produced by a centrifugal-force mixing powder method is difficult to be controlled due to fluidity or the like.SOLUTION: Matrix metal powder and solid-phase fine-particle powder are mixed together to make mixed powder, and after the mixed powder is put into a casting mold, centrifugal force is applied to the casting mold and base-material melted metal produced by a melting furnace for casting is put into the casting mold, to produce a composite material wherein the matrix metal and solid-phase fine particles form a composite. During the production, the temperature of base-material molten metal produced by the melting furnace for casting is determined on the basis of apparent thermal conductivity of the mixed powder so that the matrix metal in the mixed powder is melted and the moving speed of the solid-phase fine particles by the centrifugal force becomes low. In addition, when the solid-phase particles are ununiformly dispersed even at the melting temperature determined on the basis of the thermal conductivity, ununiform dispersion can be improved by reducing the dimension of solid-phase particles.
    • 要解决的问题:为了解决由于流动性等难以控制由离心力混合粉末法制造的金属粘合砂轮的研磨颗粒的分布的问题。解决方案:基质金属粉末 并将固相微粒粉末混合在一起制成混合粉末,将混合粉末放入铸模中后,将离心力施加到铸模上,并且通过铸造用熔融炉制造的基材熔融金属为 放入铸模中,制成复合材料,其中基体金属和固相微粒形成复合材料。 在制造过程中,基于混合粉末的表观导热率来确定由铸造用熔融炉制造的基材熔融金属的温度,使得混合粉末中的基体金属熔化,固体的移动速度 通过离心力的相细微粒变小。 此外,即使在基于导热性确定的熔融温度下固相颗粒不均匀地分散,也可以通过降低固相颗粒的尺寸来改善不均匀的分散。