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公开(公告)号：KR1020030034688A
公开(公告)日：2003-05-09
申请号：KR1020010066369
申请日：2001-10-26
Applicant: 한국과학기술원
IPC: B23K35/40
Abstract: PURPOSE: A composite solder for increasing creep strength and reliability in solder and solder ball materials, and a manufacturing method of the composite solder are provided. CONSTITUTION: The manufacturing method of composite solder comprises the steps of forming an intermetallic compound in solder matrix by solidifying the molten solder alloy after melting the solder alloy by heating solder alloy having a composition in which an intermetallic compound to be reinforcement during solidification process is formed as primary crystal in the solder matrix to temperature of liquidus line or more; and milling the intermetallic compound in the solder matrix into fine particles by plastic working the intermetallic compound inside the solder matrix, wherein the intermetallic compound is a compound selected from CuSn5, Ni3Sn4, FeSn2, Cu3Sn, AgIn2, AuSn4, AuSn, InSn4, PdSn4, PdSn3, Sb2Sn3, SbSn, Sn4Sr, and Ti6Sn5, wherein the plastic working is drawing or rolling, wherein the composition of the solder matrix is an alloy containing tin (Sn) as a principal constituent and one or more elements selected from lead (Pb), silver (Ag), bismuth (Bi), indium (In), and copper (Cu), wherein the composition of the solder matrix is an alloy containing gold (Au) as a principal constituent, and wherein the composition of the solder matrix is an alloy containing indium (In) as a principal constituent and one or more elements selected from silver (Ag), bismuth (Bi), and copper (Cu).
Abstract translation: 目的：提供一种用于提高焊料和焊球材料的蠕变强度和可靠性的复合焊料，以及复合焊料的制造方法。 构成：复合焊料的制造方法包括以下步骤：在焊料基体中形成金属间化合物，在熔融焊料合金之后，通过加热具有组成的焊料合金固化熔融焊料合金，其中形成在凝固过程期间被加固的金属间化合物 作为焊料母体中的主晶体到液相线的温度以上; 并通过对焊料基体内的金属间化合物进行塑性加工，将焊料基质中的金属间化合物研磨成细颗粒，其中金属间化合物是选自CuSn5，Ni3Sn4，FeSn2，Cu3Sn，AgIn2，AuSn4，AuSn，InSn4，PdSn4， PdSn3，Sb2Sn3，SbSn，Sn4Sr和Ti6Sn5，其中塑性加工是拉制或轧制，其中焊料基质的组成是含有锡（Sn）作为主要成分的合金和一种或多种选自铅（Pb） ，银（Ag），铋（Bi），铟（In）和铜（Cu），其中焊料基质的组成是含有金（Au）作为主要成分的合金，其中焊料基质 是含有铟（In）作为主要成分和选自银（Ag），铋（Bi）和铜（Cu）的一种或多种元素的合金。
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公开(公告)号：KR1020030030735A
公开(公告)日：2003-04-18
申请号：KR1020010063086
申请日：2001-10-12
Applicant: 한국과학기술원
CPC classification number: H01F1/0306 , H01L41/20 , Y10S428/90 , Y10S428/928 , Y10T428/249967 , Y10T428/24997
Abstract: PURPOSE: A method of fabricating a polymer composite material is provided to improve the performance characteristic of the target material by maintaining the tissue outline of the directionally solidified giant magnetostrictive material while increasing the electrical resistance. CONSTITUTION: A rare-earth phase is removed from a directionally solidified giant magnetostrictive material. The empty interstitial void where the rare-earth phase is removed is impregnated with a polymer resin. The polymer resin is then solidified. The removal of the rare-earth phase is made through heat-treating the magnetostrictive material at the process temperature or more. The gaseous material within the magnetostrictive material is all removed by making the target material be in a vacuum state before the impregnation of the polymer resin. When the polymer resin is solidified, it is pressurized to prevent the foam from being generated within the resin. The grand magnetostrictive material is a rare-earth metal-based magnetostrictive material.
Abstract translation: 目的：提供一种制备聚合物复合材料的方法，以通过在增加电阻的同时维持定向凝固的大磁致伸缩材料的组织轮廓来改善目标材料的性能特征。 构成：从定向凝固的超磁致伸缩材料中去除稀土相。 用聚合物树脂浸渍除去稀土相的空隙间隙。 然后将聚合物树脂固化。 稀土相的去除是通过在制程温度以上进行热处理而制成的。 通过在聚合物树脂浸渍之前使目标材料处于真空状态，所有磁致伸缩材料中的气态材料都被除去。 当聚合物树脂固化时，其被加压以防止在树脂内产生泡沫。 大型磁致伸缩材料是稀土金属基磁致伸缩材料。
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公开(公告)号：KR100329119B1
公开(公告)日：2002-03-21
申请号：KR1019990012837
申请日：1999-04-12
Applicant: 한국과학기술원
IPC: B22D13/00
Abstract: PURPOSE: An apparatus for manufacturing hollow cast-iron product using the centrifugal force is provided in which good quality various shaped hollow cast-iron products with no joint parts are produced in a single process, and a cast-iron product manufactured by the apparatus is provided. CONSTITUTION: The apparatus for manufacturing hollow cast-iron product comprises upper and lower molds(10,20) in which space parts(10a,20a) are formed so that molten metal is injected into the space parts(10a,20a); and upper and lower mold supports(30,40) and vertical connector(60) which are connected to the upper and lower molds(10,20) and axially installed between base frames(50,50') at both sides of the upper and lower mold supports(30,40) and vertical connector(60) by a driving shaft(70) at one end of the base frames(50,50'), wherein rotation around the central shaft of Y axis and rotation around the central shaft of X axis are simultaneously performed as a horizontal round body(41) connected between the lower mold(20) and the lower mold support(40) is surface contacted with a round body(51) fixed to one side of the base frame(50) through respective prominence and depression parts(42,52) when rotating a pulley(71) connected to the driving shaft(70) around the central shaft of X axis by manual power source using a handle(100) or an electric power source so that molten metal is formed by the centrifugal force.
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公开(公告)号：KR100308917B1
公开(公告)日：2001-09-26
申请号：KR1019990005272
申请日：1999-02-13
Applicant: 한국과학기술원
IPC: B22D18/04
Abstract: 본발명은저압주조공정중 주조로내의용탕에포함되어있는가스를연속적으로탈기하여용탕내의가스함량을낮게유지하는방법및 장치에관한것이다. 종래의저압주조공정은금속을용해한후 용탕내의가스함량을줄이기위해서레이들내에서탈가스과정을거치고저압주조공정을거치지만시간이오래걸리고용탕이주조조업중에압축공기에노출되므로용탕내부로가스가유입되고가스를함유한용탕이주형에주입되어용탕의응고시 주물내부에서기공을형성하여주물의구조적인결함과불량률을높이는요인이되고있다. 본발명은가스압력제어장치를이용하여가스이송관및 가스주입관다공질부분을통해불활성가스를용탕내로유입시켜가스방울을형성하고이 가스방울이용탕과의밀도차에의해서상승하여용탕수면위로방출하는과정에서용탕내에용해된가스를흡수해용탕의탈가스가일어나게될 뿐만아니라가스방울의움직임에의해발생한유동에의해용탕내부가균일한온도와조성을유지하게한다. 본발명은장시간의저압주조공정에서도용탕내가스함량의증가를방지하여주물내부에구조적인결함이없는우수한주물을생산하는데목적이있다.
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公开(公告)号：KR1019980021635A
公开(公告)日：1998-06-25
申请号：KR1019960040563
申请日：1996-09-18
Applicant: 한국과학기술원
IPC: H01L21/20
Abstract: 본 발명은 실리콘박판(실리콘웨이퍼)을 제조하기 위한 방법과 장치에 관한 것으로, 특히 용융 실리콘을 밀도가 더 큰 받침융액 재료 위에 띄워 박판을 응고시키는 부상응고법을 이용한 실리콘박판 형성 방법과 장치에 관한 것이다. 본 발명에 따른 부상응고법은 밀도가 상대적으로 크고 실리콘과 반응을 하지 않는 물질 위에 밀도가 작은 용융 실리콘을 부상·응고시켜서 실리콘박판을 형성하는 방법이다.
아울러, 이 부상응고법을 이용한 실리콘박판 형성 장치를 사용함으로써, 공정이 단순해지고 두께가 균일해지며 표면이 깨끗한 실리콘박판을 얻을 수 있다.-
Patent Agency Ranking
公开(公告)号：KR1019950007325B1
公开(公告)日：1995-07-10
申请号：KR1019930012029
申请日：1993-06-30
Applicant: 한국과학기술원
IPC: B22D11/00
Abstract: The apparatus produces rapidly solidified slab of a uniform thickness and fine microstructure withous segregation by reciprocating molten steel orifice and gas spray nozzle in the perpendicular direction to the substrate movement. The apparatus comprises (A) a ladle (1) and a tundish loaded by tundish transferer (3); (B) a molten metal basin (4) with one or more orifices (5) positioned at the center of the gas spray nozzle (7); (C) a gas spray nozzle (7) with a gas supply line (9) bolted to a gas source.
Abstract translation: 该装置产生均匀厚度的快速固化的板坯和精细的微结构，通过往复式钢水孔和气体喷嘴在与基板运动垂直的方向上分离。 该装置包括（A）钢包（1）和由中间包转运装置（3）装载的中间包; （B）具有位于气体喷嘴（7）中心的一个或多个孔（5）的熔融金属盆（4）; （C）具有螺栓连接到气源的气体供应管线（9）的气体喷嘴（7）。
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公开(公告)号：KR1019950000256A
公开(公告)日：1995-01-03
申请号：KR1019930012029
申请日：1993-06-30
Applicant: 한국과학기술원
IPC: B22D11/00
Abstract: 본 발명은 조직이 미세하고 편석이 없이 급속 응고된 균일한 두께의 판재를 용탕으로부터 직접 연속적으로 주조하기 위하여 한개 또는 여러개의 용탕 오리피스와 가스 분무 노즐을 기판의 이동 방향에 수직으로 가로지르는 방향으로 왕복운동시키면서 용탕 액적을 이동하는 기판 위에 분무적층시켜서 판재를 직접 성형하는 방법과, 이 방법에 사용되는 턴디쉬가 왕복 운동하도록 되어 있는 분무 적층 성형 장치에 관한 것이다.
본 발명에 의하면, 분무 중 용탕 오리피스의 냉각을 슬리브로 방지하면서 턴디쉬의 적절한 왕복 운동에 의해 균일한 두께의 판재를 성형할 수 있다.-
公开(公告)号：KR100327618B1
公开(公告)日：2002-03-14
申请号：KR1019990038199
申请日：1999-09-08
Applicant: 한국과학기술원 , 피케이밸브 주식회사
IPC: C22C38/44
Abstract: 본발명은텅스텐(W)을함유한주조용초내식성-고강도이상스테인레스강에관한것으로, 좀더상세하게는국부부식저항성, '475 ℃취성'에대한내취화성및 유동도가향상되고초내식성및 고강도를지닌텅스텐을함유한주조용이상스테인레스강(duplex stainless steel)에관한것이다. 본발명의목적은국부부식저항성, '475 ℃취성'에대한내취화성및 유동도가향상되고초내식성및 고강도를지닌텅스텐을함유한주조용이상스테인레스강을제공함에있다. 본발명에의한주조용이상스테인레스강은 Fe-25Cr-7Ni-1.5Mo-3W 합금의 Si 함량을최적화하고 Mn 함량의허용기준을높임으로써합금용탕의유동도를향상시키고합금의주조시탈황, 탈산효과를향상시킴으로써복잡한형상의주물제작을가능하게한다.
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公开(公告)号：KR1020010026770A
公开(公告)日：2001-04-06
申请号：KR1019990038199
申请日：1999-09-08
Applicant: 한국과학기술원 , 피케이밸브 주식회사
IPC: C22C38/44
Abstract: PURPOSE: An ultra corrosion-high strength duplex stainless steel for casting containing tungsten is provided to improve fluidity of alloy molten metal and effects of desulfurization and deoxidation during alloy casting, thereby enabling manufacturing of a cast-iron product in a complicated form by optimizing Si content and increasing a tolerance limit of Mn content of a Fe-25Cr-7Ni-1.5Mo-3W alloy. CONSTITUTION: The ultra corrosion-high strength duplex stainless steel for casting containing tungsten comprises 24.0 to 27.0 wt.% of Cr, 6.5 to 7.5 wt.% of Ni, 1.0 to 2.0 wt.% of Mo, 2.0 to 4.0 wt.% of W, 0.2 to 0.35 wt.% of N, up to 0.03 wt.% of C, up to 0.02 wt.% of P, up to 0.004 wt.% of S and a balance of Fe by optimizing a content ratio of Mo to W as 1:2, wherein the content of Mn is limited up to 1.5 wt.%, and the content of Si is limited to 0.7 to 1.1 wt.%.
Abstract translation: 目的：为了提高合金熔融金属的流动性以及在合金铸造过程中脱硫和脱氧的作用，提供了一种用于含钨铸件的超强腐蚀高强度双相不锈钢，从而可以通过优化Si来制造复杂形式的铸铁产品 含量并增加Fe-25Cr-7Ni-1.5Mo-3W合金的Mn含量的公差极限。 构成：用于含钨铸件的超高强度双相不锈钢包括：Cr：24.0〜27.0重量％，Ni：6.5〜7.5重量％，Mo：1.0〜2.0重量％，Mo：2.0〜4.0重量％ W，0.2-0.35重量％的N，至多0.03重量％的C，至多0.02重量％的P，至多0.004重量％的S，余量为Fe，通过将Mo的含量比优化为 W为1：2，其中Mn的含量被限制为1.5重量％，Si的含量限制为0.7-1.1重量％。
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公开(公告)号：KR1020010026768A
公开(公告)日：2001-04-06
申请号：KR1019990038197
申请日：1999-09-08
Applicant: 한국과학기술원
IPC: C22B7/00
CPC classification number: Y02P10/212
Abstract: PURPOSE: A method and an apparatus for sequential selective melting of a recycling metal scrap is provided to continuously and selectively separate metal scraps having different melting points and increase productivity during recycling resulting in a reduction of recycling cost by a series of processes in which metal scraps are selectively separated by gradually increasing the temperature as continuously transferring metal scraps on a roller bed, thereby using a difference of melting points. CONSTITUTION: The method for sequential selective melting of recycling metal scraps (1) is characterized in that metal scraps (1) are sequentially melted and separated through one or various outlets installed in lower part of a continuous melter in the order of metals having lower melting points by sequentially increasing a temperature of the continuous melter from a low temperature to a high temperature depending on the transfer direction as continuously transferring metal scraps (1) through a conveyor belt or a roller bed (5) comprised of gear type wheels from a charging door (3) in which a screen curtain (4) is installed.
Abstract translation: 目的：提供一种用于连续选择性熔化回收金属废料的方法和设备，以连续和选择性地分离具有不同熔点的金属屑，并且在再循环期间提高生产率，从而通过一系列金属废料的方法降低回收成本 通过逐渐增加温度来选择性地分离，作为在辊床上连续转移金属废料，由此使用熔点差。 构成：循环金属废料（1）的顺序选择性熔融的方法的特征在于，金属废料（1）依次熔化并通过安装在连续熔化器下部的一个或多个出口分开，熔融金属的数量级别较低 通过将金属废料（1）通过传送带或由齿轮式轮（5）组成的辊床（5）从传送方向依次传递连续熔融器的温度，从低温到高温顺序地提高温度， 安装有丝帘（4）的门（3）。
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