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公开(公告)号：KR1020120125817A
公开(公告)日：2012-11-19
申请号：KR1020110043498
申请日：2011-05-09
Applicant: (주)테너지 , 대한소결금속 주식회사 , 현대자동차주식회사
Abstract: PURPOSE: A method for manufacturing a valve seat for a gas fuel car is provided to improve wear resistance by adding Fe-Cr or Fe-Mo to form double carbide or intermetallic compounds. CONSTITUTION: A method for manufacturing a valve seat for a gas fuel car comprises the steps of: molding a material which is mainly composed of Fe and includes C of 0.8-1.2wt.%, Ni of 1.0-3.0wt.%, Co of 7.0-10.0wt.%, Cr of 4.5-7.5wt.%, Mo of 8.0-11.0wt.%, Mn of 1.5-3.0wt.%, and Ca of 0.1-0.5wt.% at a pressure of 6-9ton/cm^2, sintering the molded body in a nitrogen atmosphere at a temperature of 1,130-1,160°C for 30-90 minutes, placing a copper infiltration material on the sintered body and implementing second sintering at a temperature of 1110-1130°C for 20-40 minutes, maintaining the infiltrated sintered body at a temperature of 880-930°C for 60 minutes and oil-cooling the sintered body, and heat-treating the cooled sintered body at 550°C for 120 minutes.
Abstract translation: 目的：提供一种用于制造气体燃料汽车的阀座的方法，通过添加Fe-Cr或Fe-Mo以形成双重碳化物或金属间化合物来改善耐磨性。 构成：一种用于制造气体燃料汽车的阀座的方法包括以下步骤：对主要由Fe组成的材料进行成型，其中C为0.8-1.2重量％，Ni为1.0-3.0重量％，Co为 7.0-10.0重量％，Cr为4.5-7.5重量％，Mo为8.0-11.0重量％，Mn为1.5-3.0重量％，Ca为0.1-0.5重量％，压力为6-9ton / cm 2，在氮气气氛中在1130-1160℃的温度下烧结成型体30-90分钟，将铜浸渗材料置于烧结体上，并在1110-1130℃的温度下进行第二次烧结 保持20-40分钟，将渗透的烧结体保持在880-930℃的温度下60分钟，并对烧结体进行油冷却，并将该冷却的烧结体在550℃下热处理120分钟。
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公开(公告)号：KR1020090105400A
公开(公告)日：2009-10-07
申请号：KR1020080030836
申请日：2008-04-02
Applicant: 대한소결금속 주식회사
Abstract: PURPOSE: A sinter forming method using a pre-sintered process is provided to improve quality by preventing damage to a processing tool and making an excellent processing surface and increasing processing time. CONSTITUTION: A sinter forming method using a pre-sintered process comprises a mixing process(110), a molding process(130), a first sintering process(140), a first process(150), a second sintering process(160), the fixed shape process(170), and a second process(180). In the mixing process, solid lubricant is added to and is mixed with powder. In the molding process, a molded member is formed in a desired shape by the powder finished after mixing. In the first sintering process, the sintered powder is pre- sintered before completely applying property on the sintered powder. In the first process, a processing is carried out to form the molded member to be near to an end-product. In the second sintering process, the property is applied on the molded member firstly processed. In the fixed shape process, the deformation generated in the second sintered process is fixed. In the second process, the molded member is final-processed to have exact dimension.
Abstract translation: 目的：提供使用预烧结工艺的烧结成型方法，以通过防止加工工具的损坏并且制造出优异的加工表面并增加加工时间来提高质量。 构成：使用预烧结工艺的烧结成型方法包括混合过程（110），模制过程（130），第一烧结工艺（140），第一工艺（150），第二烧结工艺（160）， 固定形状处理（170）和第二处理（180）。 在混合过程中，加入固体润滑剂并与粉末混合。 在成型工序中，通过混合后的粉末成型，将成型体形成为期望的形状。 在第一烧结工艺中，烧结粉末在烧结粉末完全施加之前被预烧结。 在第一工序中，进行加工以形成接近最终产品的模制件。 在第二烧结工艺中，将该特性施加在首先加工的模制件上。 在固定形状处理中，在第二烧结工序中产生的变形是固定的。 在第二工艺中，模制件被最终加工成具有精确的尺寸。
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公开(公告)号：KR100336020B1
公开(公告)日：2002-05-08
申请号：KR1019990048086
申请日：1999-11-02
Applicant: 대한소결금속 주식회사
Inventor： 박종관
IPC: B22F3/00
Abstract: 본발명은성형공정을개선하여코어로드주위에분말이증대된상태에서압착함으로서성형후홀주위에국부적으로밀도가증가된제품의생산이가능하도록하기위한소결부품성형시국부적밀도제어방법에관한것으로서; 배합공정(10)과; 제품성형을위하여하금형(51)에성형할분말(52)을공급받을수 있도록급분실(53)이형성되고; 하금형(51)의하방에는성형되는제품의홀이나요철부위를형성할수 있도록상방으로돌출되는코어로드(55); 하금형(51)의상방에는하강에의하여급분실(53)에급분된분말(52)을압착성형하기위한상금형이구비되어제품의형상을만드는성형공정(20); 성형된형상체에물성을부여하는소결공정(30); 소결시발생할수 있는변형을바로잡는정형공정(40); 정형후행하는후처리공정(50)으로완성되는소결공법에있어서; 상기코어로드(55)의상단면(56)을급분실(53)에급분되는분말(52)의급분면(57)보다낮은위치에있도록하고; 상금형을하강시켜급분된분말(52)을압착시에는코어로드(55)를상승시키거나하금형과급분실전체를하강시켜코어로드(55) 위쪽에급분된분말(52)이코어로드(55)의주위로공급시켜코어로드(55)주위의부분밀도를제어할수 있도록한 것이다.
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公开(公告)号：KR101757220B1
公开(公告)日：2017-07-12
申请号：KR1020160154040
申请日：2016-11-18
Applicant: 대한소결금속 주식회사
CPC classification number: C22C38/105 , B22F1/0003 , B22F3/12 , B22F5/00 , C22C19/058 , C22C38/005 , C22C38/06 , C22C38/28
Abstract: 본발명은코발트를함유한철계합금분말 60 내지 90 중량%, 분산강화용합금분말 10 내지 40 중량% 및기타불가피한불순물로이루어지는내연기관용철계소결합금조성물및 이의제조방법, 내연기관용철계소결합금조성물을이용한밸브시트에관한것이다.
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公开(公告)号：KR1020130039607A
公开(公告)日：2013-04-22
申请号：KR1020110104287
申请日：2011-10-12
Applicant: 대한소결금속 주식회사
Abstract: PURPOSE: A method for densifying the internal diameter of a sintered product and a tool thereof are provided to reduce production costs and to maintain excellent product quality by reducing generation of gradients in the internal diameter. CONSTITUTION: A method for densifying the internal diameter of a sintered product comprises: a step of densifying the organization of the internal diameter surface of a sintered product through a post-treatment process(104); a step of descending and pressing the sintered product after connecting the sintered product in a shape tool(LS); and a step of densifying the internal diameter without generating gradients in the internal diameter through an ascending process(US).
Abstract translation: 目的：提供一种致密烧结产品的内径及其工具的方法，以减少生产成本并通过减少内径梯度的产生而保持优异的产品质量。 构成：用于致密化烧结产品的内径的方法包括：通过后处理工艺（104）致密化烧结产品的内径表面的组织的步骤; 在烧结产品在形状工具（LS）中连接之后下降和压制烧结产品的步骤; 以及通过上升过程（US）而不产生内径梯度的内部致密化的步骤。
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Patent Agency Ranking
公开(公告)号：KR1020110128565A
公开(公告)日：2011-11-30
申请号：KR1020100048083
申请日：2010-05-24
Applicant: 현대자동차주식회사 , 대한소결금속 주식회사
CPC classification number: F16K25/005 , B22F5/008 , B22F2999/00 , C22C33/0285 , B22F3/10 , B22F2201/02
Abstract: PURPOSE: A steel base sintering alloy having high wear-resistance for valve seat of engine, a manufacturing method thereof and a valve seat of engine are provided to maximumly reduce the abrasion of product by having a good wear resistance and improve the self-wear resistance. CONSTITUTION: A steel base sintering alloy having high wear-resistance for valve seat of engine and a valve seat of engine comprise the iron is a main component. The carbon 0.6~1.2wt%, nickel 1.0~3.0wt%, cobalt 15.0~25.0wt%, chrome 3.0~9.0wt%, molybdenum 8.0~15.0wt%, tungsten 1.0~4.0wt%, manganese 0.5~2.0wt%, calcium 0.1~0.5wt%. The base tissue is mixed with chrome 0.8~1.2wt%, molybdenum 0.4~0.6wt%, manganese 0.5~0.9wt%, carbon 1.0~1.4wt% and remnant is mixed with the alloy portion, carbon 0.2~0.3wt%, nickel 1.0~3.0wt%, cobalt 1.0~3.0wt% this consisting of the iron.
Abstract translation: 目的：提供一种用于发动机阀座的耐磨性高的钢基烧结合金，其制造方法和发动机的阀座，通过具有良好的耐磨性和提高耐磨性来最大限度地减少产品的磨损 。 构成：对发动机的阀座和发动机的阀座具有高耐磨性的钢基烧结合金是铁的主要成分。 碳0.6〜1.2wt％，镍1.0〜3.0wt％，钴15.0〜25.0wt％，铬3.0〜9.0wt％，钼8.0〜15.0wt％，钨1.0〜4.0wt％，锰0.5〜2.0wt％ 钙0.1〜0.5重量％。 基体组织与铬0.8〜1.2wt％，钼0.4〜0.6wt％，锰0.5〜0.9wt％，碳1.0〜1.4wt％，残渣与合金部分混合，碳0.2〜0.3wt％，镍 1.0〜3.0wt％，钴1.0〜3.0wt％，由铁组成。
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公开(公告)号：KR1020110054426A
公开(公告)日：2011-05-25
申请号：KR1020090111058
申请日：2009-11-17
Applicant: 현대자동차주식회사 , 대한소결금속 주식회사
CPC classification number: B22F5/08 , B21H5/00 , B22F3/12 , B22F3/24 , B22F2998/10 , B22F2999/00
Abstract: PURPOSE: A method of manufacturing sintered gear for transmission, which can reduce manufacturing costs by minimizing post processes is provided to increase the density of the sintered gear and to improve strength. CONSTITUTION: A method of manufacturing sintered gear for transmission comprises the next step. Carbon(C) 0.2 ~ 0.3 wt% is mixed in alloyed powder consisting of chrome(Cr) 1.3 ~ 1.7 wt%, molybdenum(Mo) 0.15 ~ 0.30 wt% and remainder iron(Fe). The pressure is added in the mixed powder and tooth form is given to the mixed powder. The molded materials are sintered in 1200 ~ 1300°C. The sintered materials(1) are rolled between two rolling dies(3,5) in room temperature. The rolled materials are heat-treated.
Abstract translation: 目的：提供一种制造用于变速器的烧结齿轮的方法，其可以通过最小化后加工来降低制造成本，以增加烧结齿轮的密度并提高强度。 构成：制造用于传输的烧结齿轮的方法包括下一步骤。 碳（C）0.2〜0.3重量％在由铬（Cr）1.3〜1.7重量％，钼（Mo）0.15〜0.30重量％，余量为铁（Fe）组成的合金粉末中混合。 在混合粉末中加入压力，将混合粉末赋予牙齿形状。 成型材料在1200〜1300℃下烧结。 烧结材料（1）在室温下在两个轧制模具（3,5）之间轧制。 轧制材料进行热处理。
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公开(公告)号：KR1020090105385A
公开(公告)日：2009-10-07
申请号：KR1020080030811
申请日：2008-04-02
Applicant: 대한소결금속 주식회사
Abstract: PURPOSE: A sinter forming method using the processing of a molded member is provided to improve quality and increase productivity by making an excellent processing surface and increasing processing time. CONSTITUTION: A sinter forming method using the processing of a molded member comprises a mixing process(110), a molding process(130), a first process(140), a sintering process(150), a fixed form process(160), and a second process(170). In the mixing process, solid lubricant is added to and is mixed with sintered powder. In the molding process, a molded member is formed in a desired shape by powder finished after mixing. In the first process, a processing is carried out to form the molded member to be near to end-product. In the sintering process, the property is applied by heating the molded member firstly processed. In the fixed shape process, the deformation generated in the sintered process is fixed and the molded member is pressurized again to improve the whole precision. In the second process, the molded member is final-processed to have exact dimension.
Abstract translation: 目的：提供一种使用模塑构件的加工的烧结成型方法，通过制造出优异的加工表面和增加加工时间来提高质量并提高生产率。 构成：使用加工模制构件的烧结成型方法包括混合工艺（110），模制工艺（130），第一工艺（140），烧结工艺（150），固定工艺（160）， 和第二过程（170）。 在混合过程中，加入固体润滑剂并与烧结粉末混合。 在成型工序中，通过混合后的粉末成型，将成形品成形为期望的形状。 在第一工序中，进行加工以形成接近最终产品的模制件。 在烧结过程中，通过加热第一次加工的模制件来施加该性能。 在固定形状处理中，烧结工艺中产生的变形是固定的，并且模制构件被再次加压以提高整体精度。 在第二工艺中，模制件被最终加工成具有精确的尺寸。
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公开(公告)号：KR100750766B1
公开(公告)日：2007-08-20
申请号：KR1020060024706
申请日：2006-03-17
Applicant: 대한소결금속 주식회사
Abstract: A method for high frequency heat treatment of a micro non-penetration hole is provided to obtain wear resistance and stiffness of the micro non-penetration hole, reduce the production cost, improve the productivity, and maintain the high quality of the micro non-penetration hole. In a method for high frequency heat treatment of corner parts of a micro non-penetration hole(50), the method comprises: preparing a coil(51) with a shape that is fully inserted into the micro non-penetration hole; installing a core(52) for magnetic flux control in the coil such that the core for magnetic flux control is projected to upper and lower sides of the coil; maintaining a heat treatment conditions including a heating time of 2 to 3 seconds, an output of 200 to 300 kW, a cooling time of 3 to 5 seconds, an anode voltage of 4 to 8 kV, and an anode current of 2.0 to 4.5 A; and performing a cooling process after performing a heat treatment process such that cooling water is uniformly sprayed onto all over the heated part of the micro non-penetration hole.
Abstract translation: 本发明提供一种微小非穿透孔的高频热处理方法，以获得微小非穿透孔的耐磨性和刚性，降低生产成本，提高生产率，并保持微型非穿透性的高质量 孔。 本发明提供一种微小非贯通孔角部高频热处理方法，其步骤包括：准备形状完全插入微型非贯通孔的线圈; 将用于磁通量控制的磁芯（52）安装在线圈中，使得用于磁通量控制的磁芯投影到线圈的上侧和下侧; 维持加热时间2〜3秒，输出功率200〜300kW，冷却时间3〜5秒，阳极电压4〜8kV，阳极电流2.0〜4.5A的热处理条件 ; 并且在执行热处理过程之后执行冷却过程，使得冷却水被均匀地喷射到微型非穿透孔的整个加热部分上。
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公开(公告)号：KR1019980013979A
公开(公告)日：1998-05-15
申请号：KR1019960032730
申请日：1996-08-01
Applicant: 대한소결금속 주식회사 , 현대자동차주식회사
IPC: F16C3/00
Abstract: 본 발명은 크랭크샤프트포지션휠의 제조방법에 관한 것으로서, 크랭크샤프트포지션휠(10)의 재료가 되는 철(Fe)분말 등을 골고루 혼합을 하는 배합공정(20); 혼합된 철(Fe)분말 등을 금형내에 일정량 주입하여 크랭크샤프트포지션휠(10)의 전체형상 및 외주연에 등간격으로 다수개 형성되는 치(齒;11) 및 연결공(13)이나 볼트공(12)이 동시에 형성되도록 프레스로 가압하여 크랭크샤프트포지션휠(10)의 형상을 만는 성형공정(30); 성형공정에서 압축성형된 형상을 고온 상태에서 분말입자간의 확산 결합이 될 수 있도록 열을 가하여 물성을 부여하는 소결공정(40); 성형소결되어 형상과 물성이 부여된 크랭크샤프트포지션휠(10)을 금형내에서 재 가압하여 전체형상과 치(11)형상의 치수 정밀도를 향상시키는 정형공정(50)으로 제조되는 것이 특징이다.
상기와 같은 본 발명은 롤포밍에 의한 종래의 기술과는 달리 제조과정이 간단하여 전체적인 제조비용의 절감을 가져오고, 금형에 의한 전체 형상이 정하여 지므로 정밀도가 높아 불량율이 없어 사후 작동성이 향상되는 효과를 가져올 수 있는 등 많은 효과를 득할 수 있는 발명이다.
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