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    • 1. 发明授权
    • 텅스텐 중합금 관통자의 제조 방법
    • 制造钨合金渗透膜的方法
    • KR100257463B1
    • 2000-06-01
    • KR1019980010329
    • 1998-03-25
    • 국방과학연구소주식회사 풍산홀딩스
    • 박경진이상환백운형노준웅송흥섭홍문희이성김은표서종원
    • B22F3/00
    • PURPOSE: A penetrator material is provided, which can promote self sharpening of the penetrator capable of improving penetrating capability of a tungsten heavy alloy material by carrying out existing processes of sintering, heat treatment and cold rolling, and then adding second cold rolling process after resintering and reheating the cold rolled material, thereby making shapes of tungsten particles irregular. CONSTITUTION: The method for manufacturing a penetrator of tungsten heavy alloy in which penetrating capability is improved comprises the steps of resintering the cold rolled material at a temperature of 1400 to 1500 deg.C for 30 minutes to 8 hours after forming, sintering, heat treating and cold rolling tungsten heavy alloy powder; reheating step of water cooling the heated material after heating the resintered material at a temperature of 1000 to 1300 deg.C for 2 to 10 hours; second cold rolling the reheated material so that a cross section ratio of the material becomes 5 to 30%; and seasoning the cold rolled material at a temperature of 300 to 600 deg.C for 10 to 100 minutes, wherein the tungsten heavy alloy comprises 80 to 93 wt.% of tungsten and a balance of a mixture of one or more elements selected from Ni, Fe, Co, and Mn.
    • 目的:提供穿透材料,通过进行烧结,热处理和冷轧的现有工艺,可以促进穿透机的自锐度,从而提高钨重质合金材料的穿透能力,然后在树脂加工后加入第二次冷轧工艺 并重新加热冷轧材料,从而使钨颗粒的形状不规则。 构成:穿透能力提高的钨重合金穿透剂的制造方法包括在成形,烧结,热处理后在1400〜1500℃的温度下将冷轧材料树脂化30分钟〜8小时的工序 和冷轧钨重合金粉末; 在1000〜1300℃的温度下加热烧结材料2〜10小时后,对加热后的材料进行水冷却的再加热工序; 第二次冷轧再热材料,使得材料的截面比为5〜30%; 并在300〜600℃的温度下调制冷轧材料10〜100分钟,其中钨重合金含有80〜93重量%的钨,余量为选自Ni的一种或多种元素的混合物 ,Fe,Co和Mn。
    • 6. 发明授权
    • 산화텅스텐 분말을 이용한 텅스텐 박막 코팅 방법
    • 산화텅스텐분말을이용한텅스텐박막코팅방법
    • KR100468215B1
    • 2005-01-26
    • KR1020020024857
    • 2002-05-06
    • 국방과학연구소
    • 이성홍문희노준웅김은표박윤식
    • C23C24/08
    • C23C26/00
    • Disclosed is a tungsten film coating method using tungsten oxide powders including the steps of contacting the tungsten oxide powders with a metal substrate and carrying out thermal reduction treatment thereon at a temperature of at least 650° C. under a hydrogen atmosphere just to coat the tungsten film on the metal substrate. Accordingly, the present invention enables to provide a simple method of coating a tungsten thin film on a metal substrate using the phenomenon of tungsten migration through vapor phase when thermal reduction treatment is carried out on tungsten oxide powders without using previous chemical or physical vapor depositions requiring expensive precision equipments or causing environmental pollution.
    • 公开了一种使用氧化钨粉末的钨膜涂布方法,包括以下步骤:使氧化钨粉末与金属基材接触,并在至少650℃的温度下对其进行热还原处理; C.在氢气气氛下仅涂布金属基材上的钨膜。 因此,本发明能够提供一种简单的方法,当在钨氧化物粉末上进行热还原处理时,使用通过气相钨移动的现象在金属基底上涂覆钨薄膜,而无需使用先前的化学或物理气相沉积 昂贵的精密设备或造成环境污染。
    • 9. 发明授权
    • 텅스텐-이트리아 로드의 제조 방법
    • 用于制备TUNGSTEN-YTTRIA ROD的方法
    • KR100904202B1
    • 2009-06-23
    • KR1020080133924
    • 2008-12-24
    • 국방과학연구소
    • 김영무김은표이성호홍문희
    • B22F3/12B22F3/20
    • A manufacturing method of a tungsten-yttria rod is provided to produce a tungsten-yttria rod improved in heat-proof and ablation resistance by warm-extruding a sintered body. A manufacturing method of a tungsten-yttria rod comprises the steps of: forming a powder molded body by compression-molding compound powder consisting of tungsten powder 95~99.5 weight% and yttria powder 0.5~5 weight(S11); reducing a surface oxide layer of the powder molded body by increasing the surrounding temperature to 800°C; removing metallic impurities from the powder molded body by increasing the surrounding temperature to 1900°C; sintering the powder molded body for a fixed time to form a sintered body by increasing the surrounding temperature to 2000~2500°C at increasing rate lower than that in the above reducing and removing steps(S12); a step of removing the residual hydrogen inside the sintered body by decreasing the surrounding temperature to 1200°C; warm-extruding the sintered body to form an extruded body with enhanced strength and density(S13); and heat-treating the extruded body at the temperature of 1000~1300°C for half an hour or an hour so that the residual stress of the extruded body is removed.
    • 提供了一种钨 - 氧化钇棒的制造方法,以通过热挤压烧结体来制造提高耐热和耐烧蚀性的钨 - 氧化钇棒。 钨 - 氧化钇棒的制造方法包括以下步骤:通过压缩由钨粉95〜99.5重量%和氧化钇粉0.5〜5重量(S11)组成的复合粉末来形成粉末成型体; 通过将周围温度升高到800℃来还原粉末成型体的表面氧化层; 通过将周围温度提高到1900℃,从粉末成型体中除去金属杂质; 将粉末成型体烧结一段固定的时间,以比上述还原和除去步骤(S12)低的速率将周围温度提高到2000〜2500℃,形成烧结体。 通过将周围温度降低到1200℃来除去烧结体内的残留氢的步骤; 温热挤压烧结体以形成具有增强的强度和密度的挤出体(S13); 并在1000〜1300℃的温度下对挤压体进行半小时或一小时的热处理,从而去除挤压体的残余应力。