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公开(公告)号：KR1020120131792A
公开(公告)日：2012-12-05
申请号：KR1020110050204
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 enable compatible use of a valve seat in a diesel or LPG fuel engine as well as a smoke-less gasoline engine because of excellent abrasion and heat resistances. 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 2.0-4.0 weight% of Cr, 8.5-11.0 weight% of Mo, 0.5-1.5 weight% of Si, 21.0-30.0 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，以使得能够兼容地使用柴油或LPG燃料发动机中的阀座以及无烟汽油发动机，因为 具有优异的耐磨性和耐热性。 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。 该座部包含2.0-4.0重量％的Cr，8.5-11.0重量％的Mo，0.5-1.5重量％的Si，21.0-30.0重量％的Co，0.5-2.0重量％的Ni，0.3-1.65重量％的 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：KR100461304B1
公开(公告)日：2004-12-14
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，其通过含有铁作为主要成分，提高耐磨性，碳，铬，钼，钒，钨，钴，硅和锰同时进行铜渗透和烧结处理， 提供了其制造方法。 本发明的方法包括：首先通过混合铁的主要成分，0.8-1.2重量％的碳，2.0-5.0重量％的氧化铝，将混合合金压制成5-8吨/ cm 2的表面压力， 的铬，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; 第二步，在将阀座重量的20至30重量％的纯铜浸入压制成型的合金中并同时烧结纯铜浸渍和烧结合金的同时在温度为 完成第一道工序后，为1,140至1,180摄氏度; 第三步骤，在完成第二步骤之后，将渗入铜的烧结合金热处理至1130至1180℃的温度之后，迅速冷却热处理后的合金; 第四步骤，在完成第三步骤之后，将快速冷却的合金退火至600-700℃的温度; 以及在完成第四过程之后在常温下对退火合金进行一些处理工艺的过程。
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公开(公告)号：KR1020040001721A
公开(公告)日：2004-01-07
申请号：KR1020020037034
申请日：2002-06-28
IPC: C22C38/12
Abstract: PURPOSE: A wear resistant sintered alloy for valve seat is provided which improves wear resistance compared to existing sintered alloy for valve seat by performing heat treatment after changing composition for the alloy and infiltrating copper into the alloy simultaneously, and a manufacturing method thereof is provided. CONSTITUTION: The method comprises first step of press molding the blended material to a surface pressure of 5 to 8 ton/cm¬2 by blending a principal constituent of iron, 1.1 to 1.6 wt.% of carbon, 3.0 to 5.0 wt.% of chromium, 2.0 to 4.0 wt.% of molybdenum, 3.0 to 5.0 wt.% of vanadium, 6.5 to 9.5 wt.% of tungsten, 2.0 to 3.5 wt.% of cobalt, 0.2 to 0.6 wt.% of silicon, 0.1 to 1.0 wt.% of boron nitride, 0.2 to 0.4 wt.% of sulfur and 0.2 to 0.5 wt.% of manganese; second step of air cooling the sintered material after sintering the press molded material to a temperature of 1,150 to 1,200 deg.C after finishing the first step; third step of infiltrating 12 to 18 wt.% of pure copper into the air cooled material at a temperature of 1,080 to 1,100 deg.C after finishing the second step; fourth step of oil cooling the pure copper infiltrated material after maintaining the pure copper infiltrated material at a temperature of 850 to 880 deg.C for 30 to 50 min after finishing the third step; and fifth step of tempering the oil cooled material to a temperature of 600 to 650 deg.C after finishing the fourth step.
Abstract translation: 目的：提供一种用于阀座的耐磨烧结合金，与现有的阀座烧结合金相比，通过在将合金和渗入铜的组合物同时改变成合金之后进行热处理而提高耐磨性，并提供其制造方法。 构成：该方法包括通过将铁的主要成分，1.1〜1.6重量％的碳，3.0〜5.0重量％的碳，3.0〜5.0重量％的碳，通过将共混材料压制成表面压力为5〜8吨/ 铬，2.0〜4.0重量％的钼，3.0〜5.0重量％的钒，6.5〜9.5重量％的钨，2.0〜3.5重量％的钴，0.2〜0.6重量％的硅，0.1〜1.0 氮化硼的重量百分比，0.2-0.4重量％的硫和0.2-0.5重量％的锰; 在完成第一步骤之后，将压制成型材料烧结后的烧结材料的空气冷却的第二步骤为1150〜1200℃的温度; 在完成第二步之后，在1080〜1100℃的温度下将12〜18重量％的纯铜浸入空气冷却材料中; 在完成第三步之后将纯铜渗透材料在850〜880℃的温度保持30〜50分钟后，冷却纯铜浸渗材料的第四步骤; 以及在完成第四步之后将油冷却材料回火至温度为600至650℃的第五步骤。
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公开(公告)号：KR100338551B1
公开(公告)日：2002-05-27
申请号：KR1019990056128
申请日：1999-12-09
Applicant: 한국분말야금(주)
Inventor： 신창진
IPC: C22C33/02
Abstract: 본발명은내연기관의흡기밸브시이트용철계소결합금에관한것으로서, 내연기관의엔진에채용되는것으로흡기밸브의개폐시, 상기밸브와의기밀성을유지하여연소실내의열효율을증진시키기위한엔진밸브시이트에적용되는내연기관의흡기밸브시이트용철계소결합금에있어서, 1.0∼2.0 중량% Cr, 0.2∼8.0 중량% Mo, 1.5∼2.5 중량% Ni, 0.5∼1.5 중량% Cu, 0.4∼1.2 중량% C, 최대 0.5 중량% V 및나머지는 Fe로된 조성물로구성되고, 퍼얼라이트, 템퍼드마텐사이트및 니켈리치마르텐사이트로조직화된기지조직(A,B.C)에수 미크론크기의 Cr계탄화물, Mo계탄화물및 V계탄화물과수십미크론크기를가진고경도의 Mo계경질입자상(D)이균일하게분산되어소결됨으로써엔진의고출력화에대응할수 있도록내마모성및 내열성이향상되어배기량별(800cc∼3000cc), 캠샤프트형식(DOHC, SOHC)별및 연료별등의사용조건에서도경제적으로공용화할수 있는내연기관의흡기밸브시이트용철계소결합금을제공한다.
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公开(公告)号：KR1019970027667A
公开(公告)日：1997-06-24
申请号：KR1019950040529
申请日：1995-11-09
Applicant: 한국분말야금(주)
Inventor： 박동규
IPC: F01N3/02
Abstract: 본 발명은 디젤엔진의 배기가스에서 발생하는 입자상물질을 여과하는 여과체를 복수개로 하여 입자상물질이 포집된 여과체를 집진영역이 아닌 별도의 영역에서 재생하여 집진영역에 위치되어 있던 여과체가 여과능력이상으로 입자상물질을 포집하였을 경우, 재생이 완료된 새로운 여과체로 교체시킬 수 있도록 한 디젤엔진의 입자상물질제거용 여과체 절환장치에 관한 것으로써, 배기가스의 배출경로일측으로 형성된 여과체 재생영역(A)과, 상기 여과체 재생영역 및 입자상물질의 집진영역(B)에 걸쳐 회전가능하게 설치되며, 적어도 1개의 여과체(2b)는 여과체 재생영역(A)에 위치하고 다른 1개는 입자상물질의 집진영역에 위치하는 여과체(2a)를 구비한 여과수단을 포함하여서 된 것이다.
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Patent Agency Ranking
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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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