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    • 3. 发明公开
    • 예열과 전기저항 발열을 결합한 세라믹 재료의 가열장치및 그 가열방법
    • 加热陶瓷材料的装置和方法
    • KR1020010094374A
    • 2001-11-01
    • KR1020000016593
    • 2000-03-30
    • 한국원자력연구원한국전력공사
    • 송근우강기원김종헌양재호김건식김영민정연호
    • H01B3/00
    • PURPOSE: An apparatus and a method for heating a ceramic material are provided to measure a fusing point of material without a hot chamber by heating the center of the ceramic material with high temperature and the outside thereof with low temperature. CONSTITUTION: An apparatus for heating a ceramic material is comprised of a vacuum chamber(1), a preheating electric furnace(2), an electrode(3), a power supplying and controlling unit(4) of the preheating electric furnace(2), a power supplying and controlling unit(5) for the electrode(3), an observation and measurement window(7), and a temperature measuring sensor(8). The preheating electric furnace(2) is installed in the vacuum chamber(1). The electrode(3) is installed in the preheating electric furnace(2). The electrode(3) is installed in the vacuum chamber(1) to a cross direction or a vertical direction and a ceramic material(9) is mounted between the electrodes. The preheating electric furnace(2) is composed of a heating element and a heat insulating material. The preheating electric furnace(2) measures a temperature of the heating element and controls the heating element through the power supplying and controlling unit(4) of the preheating electric furnace(2).
    • 目的:提供一种用于加热陶瓷材料的装置和方法,以通过在高温下加热陶瓷材料的中心并且在低温下将外部加热,来测量没有热室的材料的熔点。 构成:用于加热陶瓷材料的装置包括预热电炉(2)的真空室(1),预热电炉(2),电极(3),供电和控制单元(4) ,用于电极(3)的供电和控制单元(5),观测测量窗口(7)和温度测量传感器(8)。 预热电炉(2)安装在真空室(1)中。 电极(3)安装在预热电炉(2)中。 电极(3)沿着交叉方向或垂直方向安装在真空室(1)中,陶瓷材料(9)安装在电极之间。 预热电炉(2)由加热元件和绝热材料构成。 预热电炉(2)测量加热元件的温度,并通过预热电炉(2)的供电和控制单元(4)控制加热元件。
    • 4. 发明公开
    • 이산화우라늄, 가돌리니움 산화물 및 어비움 산화물분말로 구성된 핵연료 성형체의 제조방법과 그 장치
    • 制造核燃料压缩物的方法及其装置
    • KR1020010081602A
    • 2001-08-29
    • KR1020000007492
    • 2000-02-17
    • 한국원자력연구원한국전력공사
    • 송근우김종헌강기원김건식정연호
    • G21C3/00
    • Y02E30/40
    • PURPOSE: A method for manufacturing nuclear fuel compact and a device the same are provided to control a reactivity of nuclear fuel assembly minutely and variously according to a variation of diameter of an inner center by classifying a combustible absorbing substance containing gadolinium and a combustible absorbing substance containing erbium into the inner center and a ring-shape surrounding, and performing a preliminary extrusion. CONSTITUTION: An extrusion die(30) has a through hole(31). The first upper/lower punch has a diameter the same as an inner diameter of the through hole(31) of the extrusion die(30). The second upper/lower punch(51,52) has a diameter the same as the diameter of the first upper/lower punch and has a through hole(511,521) inside. The third upper/lower punch(62) has a diameter the same as an inner diameter of the through hole(511,521) of the second upper/lower punch(51,52).
    • 目的:提供一种制造核燃料压块的方法及其装置,用于通过对含有钆和可燃性吸收物质的可燃性吸收物质进行分类,根据内部中心的直径的变化而微细地和不同地控制核燃料组件的反应性 将铒包含在内部中心并且包围环形,并进行预挤压。 构成:挤压模具(30)具有通孔(31)。 第一上/下冲头的直径与挤出模具(30)的通孔(31)的内径相同。 第二上/下冲头(51,52)的直径与第一上/下冲头的直径相同,并且在其内部具有通孔(511,521)。 第三上/下冲头(62)的直径与第二上/下冲头(51,52)的通孔(511,521)的内径相同。
    • 7. 发明公开
    • 중성자 흡수물질을 함유한 산화물 핵연료 소결체의 제조방법
    • 制造核燃料氧化物((U,GD)O2)的方法包含中性吸收材料的烧结体
    • KR1020010001112A
    • 2001-01-05
    • KR1019990020120
    • 1999-06-02
    • 한국원자력연구원한국전력공사
    • 김건식송근우강기원김종헌정연호
    • C01B13/14
    • G21C3/623C04B35/50C04B35/63C04B35/64C04B2235/3224C04B2235/3241C04B2235/3418
    • PURPOSE: Provided is a method for manufacturing nuclear fuel oxide((U,Gd)O2) sintered body containing neutron absorbing material without milling, which gives a high density and large crystalline particle size by adding a sintering promoter to the mixed UO2 and Gd2O3 powders. CONSTITUTION: The manufacturing method comprises the steps of: adding a sintering promoter such as Cr2O3 and SiO2 or MgO and SiO2 to the mixed UO2 and Gd2O3 or UO2 and Er2O3 powders, wherein the content of Gd2O3, neutron containing material, is less than 15wt.%; mixing and pressure-molding; sintering at 1600-1800°C for more than 1hr. in reductive atmosphere. The resultant sintered body is characterized by containing 0.005-0.025wt.% of Cr and 0.002-0.025wt.% of Si or 0.005-0.02wt.% of Mg and 0.002-0.025wt.% of Si.
    • 目的:提供一种含有不研磨中子吸收材料的核燃料氧化物((U,Gd)O 2)烧结体的制造方法,其通过在混合的UO 2和Gd 2 O 3粉末中添加烧结助剂而赋予高密度和大的结晶粒径 。 构成:制造方法包括以下步骤:向混合的UO2和Gd2O3或UO2和Er2O3粉末中加入Cr2O3和SiO2或MgO和SiO2等烧结助剂,其中Gd2O3,含中子材料的含量小于15wt。 %; 混合和压力成型; 在1600-1800℃下烧结1小时以上。 在还原气氛中。 所得烧结体的特征在于含有0.005-0.025重量%的Cr和0.002-0.025重量%的Si或0.005-0.02重量%的Mg和0.002-0.025重量%的Si。
    • 10. 发明公开
    • 불량품의 재활용이 가능한 이산화 우라늄(UO₂) 핵연료 소결체의 제조 방법
    • 用于生产二氧化铀核燃料烧结材料的方法,其中可以回收不断烧结的材料
    • KR1020000059597A
    • 2000-10-05
    • KR1019990007332
    • 1999-03-05
    • 한국원자력연구원한국전력공사
    • 송근우김건식강기원김종헌정연호
    • G21C3/62
    • G21C3/623G21C21/02G21Y2002/302G21Y2002/304G21Y2004/40G21Y2004/60Y02E30/38
    • PURPOSE: A method for producing uranium dioxide nuclear fuel sintered material is provided to reduce production cost by recycling an inferiorly sintered material. CONSTITUTION: Inferiorly sintered UO2 or a piece of inferiorly sintered UO2 is oxidized in oxidizing gas atmosphere in a temperature of about 250 to 700°C for more than one hour to produce U3O8 powder. The U3O8 powder is heat treated in oxidizing gas or inert gas atmosphere in a temperature of 100 to 1500°C for more than one hour to produce polycrystal U3O8 powder. The crystals are divided to produce monocrystal U3O8 powder. The monocrystal U3O8 powder is mixed with UO2 powder. U3O8 powder is under 15wt% of the mixed powder. The mixed powder is pre-molded into slug. The slug is crushed into granules. The granules are mixed with lubricant, and press-molded into molded articles. The molded articles are sintered in a temperature of 1600 to 1800°C for more than one hour.
    • 目的:提供一种生产二氧化铀核燃料烧结材料的方法,通过回收下烧结材料来降低生产成本。 构成:在氧化气体气氛中,在约250-700℃的温度下将较低烧结的UO 2或一块下层烧结的氧化物氧化1小时以产生U3O8粉末。 将U3O8粉末在氧化气体或惰性气体气氛中在100〜1500℃的温度下进行1小时以上的热处理,得到多晶U3O8粉末。 将晶体分为产生单晶U3O8粉末。 将单晶U3O8粉末与UO2粉末混合。 U3O8粉末占混合粉末的15%以下。 将混合粉末预成型为块状。 将团块粉碎成颗粒。 将颗粒与润滑剂混合,并压制成型成型制品。 将模塑制品在1600至1800℃的温度下烧结超过1小时。