우수한 기계가공성을 갖는 다이스용 고장력강
    82.
    发明授权
    우수한 기계가공성을 갖는 다이스용 고장력강 有权
    우수한기계가공성을갖는다이스용고장력강

    公开(公告)号:KR100374980B1

    公开(公告)日:2003-03-06

    申请号:KR1019990055663

    申请日:1999-12-08

    Abstract: A high strength steel for dies has excellent machinability and consists essentially of, by weight, 0.005 to 0.1% C, not more than 1.5% Si, not more than 2.0% Mn, from 3.0 to less than 8.0% Cr, not more than 4.0% Ni, 0.1 to 2.0% Al, not more than 3.5% Cu, and balance of Fe and inevitable impurities including N and 0, and which has a metal structure whose primary microstructure is martensite, wherein N and O as impurities are restricted to amount ranges of not more than 0.02% N and not more than 0.003% O. In the invention, an improvement in the machinability in heavy cutting and an improvement in the precision electro-spark machining property and high-grade polishing property can be achieved when the above high strength steel has a chemical composition in which the value of (7.7×C(wt%)) + (2.2×Si(wt%)) + (271.2×S(wt%)) is preferably not less than 2.5 and more preferably not more than 6.

    Abstract translation: 用于模具的高强度钢具有优良的机械加工性并且基本上由以下组成:按重量计0.005%至0.1%的C,不超过1.5%的Si,不超过2.0%的Mn,从3.0至小于8.0%的Cr,不超过4.0 %Ni,0.1〜2.0%Al,3.5%Cu以及余量的Fe和不可避免的杂质,包括N和0,并且具有主要组织为马氏体的金属组织,其中作为杂质的N和O限于 范围为N:0.02%以下,O:0.003%以下的范围。本发明中,可以提高重切削加工性,提高精密电火花加工性和高品位的研磨性。 在上述高强度钢中,(7.7×C(wt%))+(2.2×Si(wt%))+(271.2×S(wt%))的值的化学组成优选为不小于 2.5,更优选不超过6。

    용접성, 피삭성 및 열처리 특성이 우수한 공구강 및 이를이용한 금형
    83.
    发明授权
    용접성, 피삭성 및 열처리 특성이 우수한 공구강 및 이를이용한 금형 失效
    용접성,피삭성및열처리특성이우수한공구강및이를이용한금형

    公开(公告)号:KR100368541B1

    公开(公告)日:2003-01-24

    申请号:KR1019990051759

    申请日:1999-11-20

    Abstract: Provided is a tool steel which contains, by weight, C and Cr in both of which (Cr + 5.9 x C) is 9.1 to 12.5, (Cr - 4.2 x C) being not more than 5 and (Cr - 6.3 x C) being not less than 2.2. In addition to these elements, this tool steel preferably contains 0.1 to 0.6% Si, 0.1 to 1.2% Mn, at least one of Mo and W of 0.6 to 1.25% in total in terms of (Mo + 1/2W), less than 0.5% V, not more than 0.12% S, not more than 100 ppm of Ca, and the balance Fe and incidental impurities. Moreover, in this tool steel, the Cr segregation range in matrix after hardening is not more than 1% by weight, or the maximum tempering hardness by tempering at a temperature of not lower than 500 DEG C is not less than 57 HRC, or a size variation due to heat treatment occurring by tempering at a temperature of not lower than 500 DEG C is not more than 0.1% relative to the size measured just before hardening in terms of linear expansion coefficient and a size variation due to heat treatment by tempering at 490 DEG C is not more than 0. Provided is also a die made by tempering the steel of the invention to a hardness of not less than 55 HRC and cutting the steel.

    Abstract translation: 本发明提供一种工具钢,其特征在于,以重量计含有(Cr + 5.9×C)为9.1〜12.5,(Cr-4.2×C)为5以下的Cr和Cr及Cr-6.3×C 不低于2.2。 除了这些元素之外,该工具钢优选包含0.1至0.6%的Si,0.1至1.2%的Mn,至少Mo和W中的一种以(Mo + 1 / 2W)计总计为0.6至1.25%,小于 0.5%V,不多于0.12%S,不多于100ppm Ca,余量为Fe和不可避免的杂质。 另外,在该工具钢中,硬化后的基体中的Cr偏析范围为1重量%以下,或者在500℃以上的温度下回火后的最高回火硬度为57HRC以上, 在不低于500℃温度下进行回火的热处理引起的尺寸变化相对于刚好在硬化前测量的尺寸,在线性膨胀系数和由于热处理引起的尺寸变化时不超过0.1% 490℃不大于0.还提供一种通过回火本发明的钢至硬度不低于55HRC并切割该钢而制成的模具。 <图像>

    알루미늄계스퍼터링용타깃재및그제조방법
    84.
    发明授权
    알루미늄계스퍼터링용타깃재및그제조방법 失效
    铝基溅射靶材及其制造方法

    公开(公告)号:KR100308001B1

    公开(公告)日:2001-12-17

    申请号:KR1019980016388

    申请日:1998-05-08

    Abstract: 본 발명은 금속간 화합물이 미세하면서도 거대한 편석이 실질적으로 없을 뿐만 아니라, 스퍼터링시에 스플래시의 원인이 되는 미세한 기공의 수가 현저하게 감소된 극소 조직을 가지는 Al계 스퍼터링용 타깃재를 제공하는 것이다.
    제 1의 Al계 스퍼터링용 타깃재는, 적어도 1종의 금속간 화합물 형성 원소를 함유하고, 금속간 화합물의 최대 지름이 실질적으로 50μm이하이다. 또한 제 2의 Al계 스퍼터링용 타깃재는 금속간 화합물 형성 원소 및 Al로 이루어 지는 합금상과 Al 매트릭스상으로 이루어 지는 극소 조직을 가지며, 합금상 중의 금속간 화합물의 최대 지름은 실질적으로 50μm이하이다. 이들 타깃재는 급냉 응고법 분말을 400 내지 600℃의 온도로 가압 소결함으로써 제조된다.

    안테나 소자 및 이를 이용한 무선 통신 장치
    85.
    发明公开
    안테나 소자 및 이를 이용한 무선 통신 장치 有权
    天线装置和无线通信装置

    公开(公告)号:KR1020010045692A

    公开(公告)日:2001-06-05

    申请号:KR1019990049073

    申请日:1999-11-06

    CPC classification number: H01Q1/38 H01Q1/243 H01Q13/106

    Abstract: PURPOSE: An antenna device and a wireless communication device using the same are provided, which have a large frequency bandwidth and radiation gain with a low Q value, and has a low scattering of a resonant frequency and a VSWR. CONSTITUTION: A slot antenna has the first conductor layer(2) covering an outer surface and a slot part(3) formed on the first conductor layer and an insulation extending part(31) extended vertically to a surrounding direction of an insulation substrate(1) from a center of the slot part. And the second conductor layer(4) is installed in the insulation extending part and is insulated electrically from the first conductor layer. The first conductor layer comprises a radiation conductor layer(21) on an upper surface of the insulation substrate, a ground conductor layer part on a bottom surface of the insulation substrate and a conductor layer part(23) connecting the radiation conductor layer and the ground conductor layer part.

    Abstract translation: 目的:提供一种天线装置和使用该天线装置的无线通信装置,其具有较大的频率带宽和具有低Q值的辐射增益,并且具有低谐振频率和VSWR的散射。 构成:缝隙天线具有覆盖外表面的第一导体层(2)和形成在第一导体层上的槽部(3)和与绝缘基板(1)的周围方向垂直延伸的绝缘延伸部(31) )从槽部分的中心。 并且第二导体层(4)安装在绝缘延伸部分中并与第一导体层电绝缘。 第一导体层包括在绝缘基板的上表面上的辐射导体层(21),绝缘基板的底表面上的接地导体层部分和连接辐射导体层和地面的导体层部分(23) 导体层部分。

    질화형 희토류 자석재료 및 이를 이용한 희토류 본드 자석
    86.
    发明公开
    질화형 희토류 자석재료 및 이를 이용한 희토류 본드 자석 无效
    氮化稀土磁体材料和稀土粘结磁体使用相同的

    公开(公告)号:KR1020010022276A

    公开(公告)日:2001-03-15

    申请号:KR1020007000850

    申请日:1999-05-25

    CPC classification number: H01F1/059 H01F1/0596

    Abstract: 본발명은질화형희토류자석재료에관한것이며, 질화형희토류자석재료는원자%로 RTMBN(단, R은 Y를포함하는적어도 1종의희토류원소이며, Sm을필수적으로함유하며, T는 Fe 단독또는 Fe와 Co 및/또는 Ni와조합하며, M은 Al, Ti, V, Cr, Mn, Ga, Zr, Nb, Mo, Hf, Ta, W 및 Zn으로이루어진그룹으로부터선택되는적어도 1종의원소이며, 6≤α≤15, 0.5≤β≤10, 0≤γ≤4, 및 4≤δ≤30이다)에의하여표기되는기본조성을가지며, 실질적으로평균경정입자지름이 0.01 내지 1㎛의 RT형구조의경질자성상으로이루어지며, 또한αFe의평균면적율이 5% 이하이다.

    우수한 기계가공성을 갖는 다이스용 고장력강
    87.
    发明公开
    우수한 기계가공성을 갖는 다이스용 고장력강 有权
    具有超高机械强度的高强度钢

    公开(公告)号:KR1020000057043A

    公开(公告)日:2000-09-15

    申请号:KR1019990055663

    申请日:1999-12-08

    Abstract: PURPOSE: A high tensile strength steel is provided to accomplish an improved machinability without causing an adverse effect to desirable properties of an excellent balancing between the hardness and ductility. CONSTITUTION: A high tensile strength steel has a composition containing, by weight, Cu of 0.005 to 0.1%, Si of 1.5% or less, Mn of 2.0% or less, Cr of 3.0 to 8.0%, Ni of 4.0% or less, Al of 2.0% or less, Cu of 3.5% or less and the residual part composed of Fe and unavoidable impurities containing N and O, and a metal structure of which basic fine structure is martensite, wherein, as impurities, N is limited to 0.02% or less and O is limited to 0.003% or less. Improvements in a heavy cutting machinability, a precision electro-spark machining property, and a high level abrasive quality can be obtained when the high tensile strength steel is provided with a chemical composition satisfying the formula: (7.7 times C(wt%)) plus (2.2 times Si(wt%)) plus (271.2 times S(wt%)) is equal to or higher than 2.5.

    Abstract translation: 目的:提供高抗拉强度钢,以实现改进的机械加工性,而不会对硬度和延展性之间的优异平衡的期望性能产生不利影响。 构成:高强度钢的组成含有Cu为0.005〜0.1%,Si为1.5%以下,Mn为2.0%以下,Cr为3.0〜8.0%,Ni为4.0%以下的组成, Al为2.0%以下,Cu为3.5%以下,残留部分为Fe和不可避免的含有N和O的杂质,以及碱性微细结构为马氏体的金属结构,其中,作为杂质,将N限制为0.02 %以下,O为0.003%以下。 当高抗拉强度钢具有满足下列公式的化学成分(7.7倍C(重量%))加上时,可以获得重切削加工性,精密电火花加工性能和高水平磨料质量的改进 (2.2倍Si(重量%))加上(271.2倍S(重量%))等于或高于2.5。

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