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公开(公告)号：KR100461306B1
公开(公告)日：2004-12-14
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: A sintered alloy having an improved wear resistance and a workability for a valve seat. The alloy contains iron as a main component, carbon, silicon, chromium, molybdenum, cobalt, maganese, lead, vanadium, advantageously boron nitride, and tungsten. The strength, wear resistance, and material properties are improved by a sub-zero treatment. Sintered alloy with wear resistance used for a valve seat comprises Fe as a main component, C of 1.2 to 1.7 wt %, Cr of 3.5 to 5.0 wt %, Mo of 2.0 to 4.0 wt %, V of 3.0 to 5.0 wt %, W of 7.0 to 10.0 wt %, Co of 2.0 to 3.5 wt %, boron nitride of 0.1 to 1.0 wt %, S of 0.2 to 0.4 wt %, Mn of 0.2 to 0.5 wt %, advantageously 0.2 to 0.6% Si, and Pb of 10.0 to 15.0 wt %. Sintered alloy for an valve seat is manufactured by a sub-zero treatment so that the amount of metallic particles separated from a base matrix decreases and a size of the separated metallic particle becomes small.
Abstract translation: 一种烧结合金，具有改善的耐磨性和用于阀座的可加工性。 该合金含有铁作为主要组分，碳，硅，铬，钼，钴，锰，铅，钒，有利的是氮化硼和钨。 通过零度处理改善强度，耐磨性和材料性能。 用于阀座的具有耐磨性的烧结合金包含Fe作为主要组分，1.2至1.7重量％的C，3.5至5.0重量％的Cr，2.0至4.0重量％的Mo，3.0至5.0重量％的V，W 7.0至10.0重量％的Co，2.0至3.5重量％的Co，0.1至1.0重量％的氮化硼，0.2至0.4重量％的S，0.2至0.5重量％的Mn，有利地0.2至0.6重量％的Si和 10.0至15.0重量％。 用于阀座的烧结合金通过零度处理制造，使得从基体分离的金属颗粒的量减少并且分离的金属颗粒的尺寸变小。
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公开(公告)号：KR1020040000526A
公开(公告)日：2004-01-07
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烧结合金，其通过以不含钴的碳，铬，钼，钒，钨，硅，锰和铅为主要成分来提高耐磨性和成形性，及其制造方法 被提供。 构成：该方法包括通过将铁的主要成分，0.3〜0.5重量％的碳，1.0〜3.0重量％的碳，1.0〜3.0重量％的碳， 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 铅的重量％ 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：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：KR1019970019739A
公开(公告)日：1997-04-30
申请号：KR1019950030730
申请日：1995-09-19
Applicant: 한국분말야금(주)
Inventor： 박동규
IPC: H05B1/00
Abstract: 본 발명은 디젤엔진의 배기가스에서 포집한 필터중의 입자상 물질을 연소시켜 필터를 재생하기 위한 전기 발열체에 관한 것으로, 흑연, 탄소, 탄소-탄소복합재료 중에서 선택한 1종으로된 소재 표면에 규소, 탄화규소(SiC), 질화규소(Si
3 N
4 ), 산화규소(SiO
2 )중에서 선택한 1종 이상의 피복층이 형성됨을 특징으로 하는 디젤엔진의 배기가스에서 포집한 필터중의 입자성 물질을 연소하기 위한 전기발열체에 관한 기술이다.-
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Patent Agency Ranking
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公开(公告)号：KR101333747B1
公开(公告)日：2013-11-27
申请号：KR1020110050203
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 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：KR1020130111805A
公开(公告)日：2013-10-11
申请号：KR1020120033989
申请日：2012-04-02
CPC classification number: F01L3/02 , B22F3/16 , B22F5/00 , B22F5/008 , B22F2003/248 , C22C33/0221 , C22C33/0285
Abstract: PURPOSE: A sintered alloy for a valve sheet and a valve sheet manufacturing method using the same are provided to increase the solid lubricous properties and to improve the illumination and a surface condition of the valve sheet. CONSTITUTION: A sintered alloy for a valve sheet includes 0.8-1.2 wt% of C, 2.0-4.5 wt% of Ni, 3.0-5.0 wt% of Cr, 16.0-20.0 wt% of Mo, 9.0-13.0 wt% of Co, 0.05-0.15 wt% of V, 0.2-0.8 wt% of S, Fe and unavoidable impurities, and MnS. The total weight of the sintered alloy includes 0.5-2.5 wt% of MnS. The size of the MnS is 12 um or less. The MnS includes 60-65 wt% of M and 35-40 wt% of S.
Abstract translation: 目的：提供一种用于阀片的烧结合金和使用其的阀片制造方法，以增加固体润滑性能并改善阀片的照明和表面状态。 构成：用于阀片的烧结合金包括C：0.8-1.2重量％，Ni：2.0-4.5重量％，Cr：3.0-5.0重量％，Mo：0.010.0重量％，Co：9.0-13.0重量％ V：0.05〜0.15wt％，S：Fe，不可避免的杂质：0.2〜0.8wt％，MnS： 烧结合金的总重量为MnS的0.5〜2.5重量％。 MnS的尺寸为12μm以下。 MnS包括60-65wt％的M和35-40wt％的S.
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