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公开(公告)号：KR1020120131790A
公开(公告)日：2012-12-05
申请号：KR1020110050202
申请日：2011-05-26
Applicant: 한국분말야금(주)
CPC classification number: C22C33/02 , B22F3/10 , C22C38/34 , C22C38/44 , C22C38/52 , C22C38/58 , C22C38/60 , F01L3/02
Abstract: PURPOSE: An iron-based sintered alloy with high-temperature abrasion resistance and a valve seat manufacturing method using the same are provided to obtain a valve seat with improved abrasion and heat resistances, which can be applied to a diesel or LPG fuel engine as well as a smoke-less gasoline engine. CONSTITUTION: An iron-based sintered alloy with high-temperature abrasion resistance comprises a functional seat part and a non-functional support part. The seat part comprises 0.5-2.0 weight% of Cr, 3.5-7.5 weight% of Mo, 0.1-2.0 weight% of Si, 11.0-18.0 weight% of Co, 0.5-2.0 weight% of Ni, 0.3-1.65 weight% of Mn, 0.15-0.95 weight% of S, 0.6-1.0 weight% of C, 2.0 weight% or less of other components, and the remaining amount of Fe and has a structure in which a Co-based hard grain phase and a MnS phase are evenly distributed in solbite and bainite mixed matrix. The support part comprises 2.0-4.0 weight% of Cr, 0.2-0.4 weight% of Mo, 0.7-1.1 weight% of C, and 2.0 weight% or less of other components and has a structure in which fine composite carbide is distributed in bainite matrix.
Abstract translation: 目的：提供一种具有高温耐磨性的铁基烧结合金和使用该铁基烧结合金的阀座制造方法，以获得具有改善的耐磨性和耐热性的阀座，其也可应用于柴油或液化石油气燃料发动机 作为无烟汽油发动机。 构成：具有高温耐磨性的铁基烧结合金包括功能性座椅部件和非功能支撑部件。 座部包含0.5-2.0重量％的Cr，3.5-7.5重量％的Mo，0.1-2.0重量％的Si，11.0-18.0重量％的Co，0.5-2.0重量％的Ni，0.3-1.65重量％的Ni， Mn，0.15-0.95重量％的S，0.6-1.0重量％的C，2.0重量％以下的其他成分，剩余量的Fe，具有其中Co类硬质相和MnS相的结构 均匀分布在solbite和贝氏体混合基质中。 支撑部分包含2.0-4.0重量％的Cr，0.2-0.4重量％的Mo，0.7-1.1重量％的C和2.0重量％以下的其它组分，并且具有细小的复合碳化物分布在贝氏体中的结构 矩阵。
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公开(公告)号：KR100574399B1
公开(公告)日：2006-04-27
申请号：KR1020040085372
申请日：2004-10-25
Applicant: 재단법인 포항산업과학연구원 , 한서밈텍 주식회사 , 한국분말야금(주)
Abstract: 본 발명은 친환경적인 용매인 물이나 알코올로 결합제를 제거할 수 있으며, 우수한 기계적 물성을 가진 폴리메틸메타크릴레이트와 기존의 셀룰로오스 아세테이트 부티레이트를 적정한 조성으로 섞어서 점도의 안정성과 우수한 강도를 가져서 공정 시 취급 또는 다룸(handling)이 쉽고, 형체유지력이 우수한 결합제를 제공하는 것을 목적으로 한다.
상기 목적을 달성하기 위한 기술적인 구성으로서, 분말사출성형에 사용되는 혼합체를 제조함에 있어서, 폴리에틸렌글리콜을 65중량%로 고정시킨 채 폴리메틸메타크릴레이트 5~25중량% 나머지를 셀룰로오스 아세테이트 부티레이트로 구성되는 것을 특징으로 하는 분말사출성형 용 결합제이다.Abstract translation: 本发明可除去粘合剂在环境友好的溶剂，例如水，醇，聚甲基丙烯酸甲酯的混合物，并且具有与所述粘度处理过程的适当组合物gajyeoseo稳定性和优异的强度优异的机械性能的常规醋酸丁酸纤维素 而且易于操作，并且具有优异的模具保持能力。
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公开(公告)号：KR1020040000527A
公开(公告)日：2004-01-07
申请号：KR1020020035007
申请日：2002-06-21
IPC: C22C38/60
CPC classification number: C22C38/22 , C22C33/0228 , C22C33/0242 , C22C33/0278 , C22C38/04 , C22C38/24 , C22C38/30 , C22C38/60
Abstract: PURPOSE: A wear resistant sintered alloy for valve seat is provided which improves wear resistance and formability by containing iron as a principal constituent, carbon, chromium, molybdenum, vanadium, tungsten, silicon, manganese and lead, and a manufacturing method thereof is provided. CONSTITUTION: The method comprises first process of press molding the blended alloy to a surface pressure of 5 to 8 tons/cm¬2 by blending a principal constituent of iron, 1.2 to 1.7 wt.% of carbon, 3.5 to 5.0 wt.% of chromium, 2.0 to 4.0 wt.% of molybdenum, 3.0 to 5.0 wt.% of vanadium, 7.0 to 10.0 wt.% of tungsten, 2.0 to 3.5 wt.% of cobalt, 0.1 to 1.0 wt.% of boron nitride, 0.2 to 0.4 wt.% of sulfur, 0.2 to 0.5 wt.% of manganese and 10.0 to 15.0 wt.% of lead; second process of air cooling the sintered alloy after sintering the press molded alloy at a temperature of 1,140 to 1,180 deg.C after finishing the first process; third process of subzero cooling the air cooled sintered alloy to a temperature of -200 to -600 deg.C after finishing the second process; fourth process of impregnating the subzero cooled alloy with lead at a temperature of 450 to 550 deg.C after finishing the third process; and a process of manufacturing the wear resistant sintered alloy for valve seat by passing the lead impregnated alloy through barrel process at a temperature of 450 to 550 deg.C after finishing the fourth process.
Abstract translation: 目的：提供一种用于阀座的耐磨烧结合金，其通过以铁，铬，钼，钒，钨，硅，锰和铅为主要成分提高耐磨性和成形性，并提供其制造方法。 构成：该方法包括通过将铁的主要成分，1.2〜1.7重量％的碳，3.5〜5.0重量％的碳，3.5〜5.0重量％的碳，将共混合金压制成5〜8吨/ 铬，2.0〜4.0重量％的钼，3.0〜5.0重量％的钒，7.0〜10.0重量％的钨，2.0〜3.5重量％的钴，0.1〜1.0重量％的氮化硼，0.2〜 0.4重量％的硫，0.2〜0.5重量％的锰和10.0〜15.0重量％的铅; 在完成第一工序之后，在1140〜1180℃的温度下烧结后，对烧结合金进行空气冷却的第二工序; 在完成第二工序之后，将空气冷却的烧结合金的低温冷却至-200〜-600℃的三次方法; 在完成第三次处理之后，在450℃至550℃的温度下浸渍具有铅的亚零冷却合金的第四工序; 以及在完成第四次处理之后，通过使引锭浸渍合金通过桶加工在450-550℃的温度下制造用于阀座的耐磨烧结合金的方法。
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公开(公告)号：KR1019970009884A
公开(公告)日：1997-03-27
申请号：KR1019950028235
申请日：1995-08-31
Applicant: 한국분말야금(주)
IPC: B01J29/46
Abstract: 본 발명은 공해물질중 인체에 유해한 질소산화물(NOx)을 분해시키는 환원촉매로서 기존의 촉매물질보다 환원특성을 발휘하는 초기온도가 낮고, 사용온도 영역이 넓는등 우수한 환원특성을 갖는 제올라이트(Zeolite)계환원촉매의 제조에 관한 것으로, ZSM-5형 제올라이트(Zeolite)에 무게비로 3~50% 첨가한 구리(Cu) 분말을 복수개의 팔(Arm)이 달려 있는 축(shaft)이 부착된 교반기내에 강성을 갖는 볼(Ball)과 함게 장입하여 교반반응시키는 기계적 합금화법을 이용하여 ZSM-5형 제올라이트에 구리(Cu)가 치환, 고착되도록 함을 특징으로 하는 공해물질중의 질소산화물을 환원시키기 위한 환원촉매의 제조방법에 관한 기술이다.
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公开(公告)号：KR1019910003899B1
公开(公告)日：1991-06-15
申请号：KR1019880014903
申请日：1988-11-12
Applicant: 한국분말야금(주)
IPC: B22F5/00
Abstract: A Fe system rubbing material is manufactured by sintering the admixed powder consisting of 73-89.6% wt.% Fe, 2-5 wt.% C, 0.2-0.5 wt.% Mo, 0.2-0.5 wt.% P, 2-6 wt.% Cu and 6-15 wt.% Al2O3. The material is useful for brake of great motive power machine such as a heavy equipment, train or airplane, and supplies very stabilized frictional force in water or oil.
Abstract translation: 通过烧结由73-89.6重量％的Fe，2-5重量％的C，0.2-0.5重量％的Mo，0.2-0.5重量％的P，2-6的Fe组成的混合粉末来制造Fe系摩擦材料 重量％的Cu和6-15重量％的Al 2 O 3。 该材料可用于重型设备，火车或飞机等大型动力机械的制动，并在水或油中提供非常稳定的摩擦力。
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公开(公告)号：KR101363024B1
公开(公告)日：2014-02-14
申请号：KR1020110050202
申请日：2011-05-26
Applicant: 한국분말야금(주)
Abstract: 본 발명에 따른 고온 내마모용 철계 소결 합금은, 내연기관의 엔진에 채용되는 것으로서 흡배기 밸브의 개폐시, 상기 밸브와의 기밀성을 유지하여 연소실 내의 열효율을 증진시키기 위한 엔진 밸브 시이트에 적용되는 고온 내마모용 철계 소결 합금에 있어서, 기능부위인 시트 파트(seat part)와 비기능 부위인 지지 파트(support part)를 포함하며, 상기 시트 파트는 솔바이트(Sorbite)와 베이나이트(bainite)가 혼합된 기지조직에 Co계 경질 입자상 및 MnS 상이 균일하게 분산되어 있는 조직이며, 상기 지지 파트는 베이나이트 기지 조직에 미세한 복합 탄화물이 분산되어 있는 조직이며, 상기 시트 파트는, 크롬(Cr) 0.5~2.0 wt%, 몰리브덴(Mo) 3.5~7.5wt%, 규소(Si) 0.1~2.0wt%, 코발트(Co) 11.0~18.0wt%, 니켈(Ni) 0.5~2.0wt%, 망간(Mn) 0.3~1.65wt%, 황(S) 0.15~0.95wt%, 탄소(C) 0.6~1.0wt%, 2.0wt% 이하의 기타성분을 포함하며 나머지는 Fe로 구성되며, 상기 지지 파트는, 크롬(Cr) 2.0~4.0wt%, 몰리브덴(Mo) 0.2~0.4wt%, 탄소(C) 0.7~1.1wt%, 2.0wt% 이하의 기타성분을 포함하며 나머지는 Fe로 구성된 것을 특징으로 한다.
Abstract translation: 根据本发明的用于耐磨高温基于铁基烧结合金中，如在高温下的内燃机所使用和打开和关闭进气和排气阀的情况下，施加到发动机阀座，所述阀的机密性，提高在燃烧室中的热效率 一个是在磨损的铁基烧结合金中，座椅一部分的功能性位点（座位部分）和非功能性部分，和一个支撑部（支撑部），所述座椅部分刷字节（索氏）和贝氏体（贝氏体）混合 其中，所述支撑部为在贝氏体基体组织中分散有微细复合碳化物的结构，所述片部由铬（Cr）0.5〜2.0重量％ ％，钼（Mo）3.5〜7.5wt％，硅（Si）0.1〜2.0重量％，钴（Co）11.0〜18.0wt％，镍（Ni）0.5〜2.0重量％，锰（Mn）0.3〜1.65wt ，硫（S）0.15〜0.95重量％，碳（C）0.6〜1.0重量％，碳2.0重量％ 包括其它组分，其余为Fe，其中所述支撑部分，铬（Cr）2.0〜4.0wt％，钼（Mo）0.2〜0.4重量％，碳（C）0.7〜= 1.1％，2.0重量％ 和其他组件，其余的是铁。
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公开(公告)号：KR100461305B1
公开(公告)日：2004-12-14
申请号：KR1020020035006
申请日：2002-06-21
IPC: C22C38/60
Abstract: PURPOSE: A wear resistant sintered alloy for valve seat is provided which improves wear resistance and formability by containing iron as a principal constituent, carbon, chromium, molybdenum, vanadium, tungsten, silicon, manganese and lead only without cobalt, and a manufacturing method thereof is provided. CONSTITUTION: The method comprises first process of press molding the blended alloy to a surface pressure of 5 to 8 tons/cm¬2 by blending a principal constituent of iron, 0.3 to 0.5 wt.% of carbon, 1.0 to 3.0 wt.% of chromium, 2.0 to 4.0 wt.% of molybdenum, 2.0 to 4.0 wt.% of vanadium, 5.0 to 7.0 wt.% of tungsten, 0.2 to 0.4 wt.% of sulfur, 0.2 to 0.5 wt.% of manganese and 10.0 to 15.0 wt.% of lead; second process of air cooling the sintered alloy after sintering the press molded alloy at a temperature of 1,140 to 1,180 deg.C after finishing the first process; third process of subzero cooling the air cooled sintered alloy to a temperature of -200 to -600 deg.C after finishing the second process; fourth process of impregnating the subzero cooled alloy with lead at a temperature of 450 to 550 deg.C after finishing the third process; and a process of manufacturing the wear resistant sintered alloy for valve seat by passing the lead impregnated alloy through barrel process at a temperature of 450 to 550 deg.C after finishing the fourth process.
Abstract translation: 目的：提供一种用于阀座的耐磨性烧结合金，其通过仅含有铁作为主要成分，仅用钴而不改变碳，铬，钼，钒，钨，硅，锰和铅而提高耐磨性和可成形性，及其制造方法 被提供。 构成：该方法包括：通过混合铁的主要成分，0.3-0.5重量％的碳，1.0-3.0重量％的氧化铝，将混合合金压制成5至8吨/ cm 2的表面压力 的铬，2.0-4.0重量％的钼，2.0-4.0重量％的钒，5.0-7.0重量％的钨，0.2-0.4重量％的硫，0.2-0.5重量％的锰和10.0-15.0重量％ 铅的重量百分比; 在完成第一工序后，在1140〜1180℃的温度下对压制成形的合金进行烧结之后，对烧结合金进行空冷的第二工序; 第二工序结束后，将空冷式烧结合金冷却至零下零度以下的第三工序; 第四步骤，在完成第三步骤之后，在450至550℃的温度下用铅浸渍零下冷却的合金; 以及在完成第四工艺之后，通过使铅浸渍合金在450至550℃的温度下通过桶形工艺来制造用于阀座的耐磨烧结合金的工艺。
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