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Patent Agency Ranking
公开(公告)号：KR1020040000525A
公开(公告)日：2004-01-07
申请号：KR1020020035005
申请日：2002-06-21
IPC: C22C38/12
Abstract: PURPOSE: A wear resistant sintered alloy for valve seat is provided which improves wear resistance by containing iron as a principal constituent, carbon, chromium, molybdenum, vanadium, tungsten, cobalt, silicon and manganese and simultaneously performing copper infiltration and sintering treatment, 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, 0.8 to 1.2 wt.% of carbon, 2.0 to 5.0 wt.% of chromium, 5.0 to 7.0 wt.% of molybdenum, 3.0 to 5.0 wt.% of vanadium, 8.0 to 12.0 wt.% of tungsten, 0.2 to 0.5 wt.% of manganese and 4.0 to 6.0 wt.% of cobalt; second process of air cooling the pure copper infiltrated and sintered alloy after infiltrating 20 to 30 wt.% of pure copper for the weight of the valve seat into the press molded alloy and sintering the pure copper infiltrated alloy at the same time at a temperature of 1,140 to 1,180 deg.C after finishing the first process; third process of rapidly cooling the heat treated alloy after heat treating the copper infiltrated and sintered alloy to a temperature of 1,130 to 1,180 deg.C after finishing the second process; fourth process of annealing the rapidly cooled alloy to a temperature of 600 to 700 deg.C after finishing the third process; and a process of proceeding some processing works on the annealed alloy at an ordinary temperature after finishing the fourth process.
Abstract translation: 目的：提供一种用于阀座的耐磨烧结合金，其通过以铁作为主要成分，碳，铬，钼，钒，钨，钴，硅和锰，并同时进行铜浸渗和烧结处理，提高耐磨性，并且 提供其制造方法。 构成：该方法包括通过将铁的主要成分，0.8至1.2重量％的碳，2.0至5.0重量％的碳，2.0至5.0重量％的碳共混而将共混合金压制成5至8吨/厘米2的表面压力的第一工艺 铬，5.0〜7.0重量％的钼，3.0〜5.0重量％的钒，8.0〜12.0重量％的钨，0.2〜0.5重量％的锰和4.0〜6.0重量％的钴; 将纯铜渗透和烧结合金浸入20-30重量％的纯铜中，将阀座的重量浸入压制成型合金中，同时在同一温度下烧结纯铜浸渗合金， 完成第一工序后1,140〜1,180度; 在完成第二工序之后，将铜浸渗烧结合金热处理后的热处理合金快速冷却至1130〜1180℃的温度的第3工序; 完成第三工序后将快速冷却合金退火至600〜700℃的第四工序; 以及在完成第四工序之后在常温下对退火的合金进行一些加工工艺的过程。
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公开(公告)号：KR101363025B1
公开(公告)日：2014-02-14
申请号：KR1020110050204
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) 1.0~3.0 wt%, 몰리브덴(Mo) 6.0~11.0wt%, 규소(Si) 0.1~1.0wt%, 코발트(Co) 16.0~25.0wt%, 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.
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公开(公告)号：KR1020120131791A
公开(公告)日：2012-12-05
申请号：KR1020110050203
申请日：2011-05-26
Applicant: 한국분말야금(주)
Abstract: PURPOSE: An iron-based sintered alloy with high-temperature abrasion resistance and a valve seat manufacturing method using the same are provided to remove the probability of environmental contamination by excluding lead and enable application of a valve seat in severe conditions. 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 1.0-3.0 weight% of Cr, 6.0-11.0 weight% of Mo, 0.1-1.0 weight% of Si, 16.0-25.0 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：提供具有高温耐磨性的铁基烧结合金和使用其的阀座制造方法，以通过排除铅来消除环境污染的可能性，并且能够在恶劣条件下施加阀座。 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1.0-3.0重量％的Cr，6.0-11.0重量％的Mo，0.1-1.0重量％的Si，16.0-25.0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：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：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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