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公开(公告)号：WO2010093136A2
公开(公告)日：2010-08-19
申请号：PCT/KR2010/000580
申请日：2010-02-01
Applicant: 전북대학교산학협력단 , 손인진 , 박정환 , 김기열
CPC classification number: C22C29/08 , B22F2998/00 , B22F3/12
Abstract: 기공이 없고 WC가 균일하게 분포됨으로써 우수한 기계적 성질과 내마모성을 가지며 탄소강과의 접합성이 우수한 WC-Fe계 초경합금 및 그 제조방법을 제공한다. 이를 위해, 본 발명의 WC-Fe계 초경합금 제조방법은, Fe 5 내지 40중량%, 상기 Fe와 고용체를 형성하는 원소 1 내지 10중량%, 그리고 다른 소재와의 접합부위의 젖음성을 향상시키는 물질 0.1 내지 3중량%, 및 잔부가 WC로 이루어지는 원료를 혼합하는 단계; 상기 혼합이 완료된 원재료를 건조시키는 단계; 상기 건조된 원재료를 성형체로 성형하는 단계; 상기 성형체를 소결하는 소결단계; 및 상기 소결된 합금을 냉각하는 단계를 포함한다. 본 발명에 의하면 WC에 바인더로 사용된 Fe는 기존의 Co나 Ni보다 가격이 매우 저렴하여 초경합금의 제조원가를 획기적으로 낮출 수 있다.
Abstract translation:
是无孔WC是均匀分布的具有优异的机械性能和磨损碳钢的电阻和粘合性能提供了极好的基于WC-Fe系超硬合金及其制造的方法。 为此，WC-Fe系本发明中，铁5的硬质合金的生产过程，以40％（重量），上述项1至10％的材料（重量）形成Fe和固溶体，提高不同材料0.1的键合部位的润湿性的元素的 按重量计至3％重量，余量为WC; 干燥混合原料; 将干燥的原料成型为成型体; 烧结成形体的烧结步骤; 并冷却烧结合金。 根据本发明，在WC中用作粘合剂的Fe比Co或Ni便宜得多，从而可以大幅度降低超硬合金的生产成本。
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公开(公告)号：KR1020100024213A
公开(公告)日：2010-03-05
申请号：KR1020080082968
申请日：2008-08-25
Applicant: 전북대학교산학협력단
CPC classification number: C01B32/90 , B82Y30/00 , B82Y40/00 , C01P2004/64
Abstract: PURPOSE: A manufacturing method of a nano structure metal carbide and the and nano structure metal carbide manufactured from thereof are provided to perform a pressing molding and a sintering operation at high temperature in several minutes by heating nano powder with a heat generated from an inducing current or an impulse current. CONSTITUTION: A manufacturing method of a nano structure metal carbide comprises the following steps: nano pulverizing the metal carbide powder to make a nano particle size by ball milling; pressing molding and sintering the powder from the nano pulverizing step while heating the powder with a heat generated from an electric current; and cooling the pressing molded and sintered nano structure at room temperature when the contraction length does not change by blocking the electric current. The metal carbide powder is selected from the group consisting of titanium carbide, tungsten carbide, silicon carbide, tantalium carbide, vanadium carbide, and niobium carbide.
Abstract translation: 目的：提供纳米结构金属碳化物的制造方法和由其制造的纳米结构金属碳化物，以在几分钟内通过用感应电流产生的热量加热纳米粉末进行压制成型和烧结操作 或脉冲电流。 构成：纳米结构金属碳化物的制造方法包括以下步骤：通过球磨将纳米粉碎金属碳化物粉末制成纳米粒度; 在从电流产生的热量加热粉末的同时，从纳米粉碎步骤中压制和烧结粉末; 并且当收缩长度不通过阻断电流而改变时，在室温下冷却压制和烧结的纳米结构。 金属碳化物粉末选自碳化钛，碳化钨，碳化硅，碳化钽，碳化钒和碳化铌。
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公开(公告)号：KR1020090124259A
公开(公告)日：2009-12-03
申请号：KR1020080050359
申请日：2008-05-29
Applicant: 전북대학교산학협력단
Abstract: PURPOSE: A method for manufacturing a nano-structured metal ceramic is provided to inhibit the growth of the crystal grain of metal ceramics and to improve the interface adhesion. CONSTITUTION: A method for manufacturing a nano-structured metal ceramic comprises the steps of ball milling a mixture of any one of a specific metal carbide or a specific metal nitride and a specific metal powder to obtain a nanoparticle; press molding and sintering the nano-structured mixture with applying the heat generated by the induction current or the impulse current; and blocking the induction current or the impulse current if there is no change of the shrinkage length of the nano-structured mixture, and cooling the press molded and sintered nano-structured mixture to a room temperature just before the induction current or the impulse current is blocked.
Abstract translation: 目的：提供一种制造纳米结构金属陶瓷的方法，以抑制金属陶瓷的晶粒生长并提高界面附着力。 构成：制造纳米结构金属陶瓷的方法包括以下步骤：将特定金属碳化物或特定金属氮化物中的任何一种的混合物和特定的金属粉末球磨，以获得纳米颗粒; 通过施加由感应电流或脉冲电流产生的热量来压制和烧结纳米结构的混合物; 并且如果纳米结构混合物的收缩长度没有变化，则阻止感应电流或脉冲电流，并且将压模和烧结的纳米结构混合物在感应电流或脉冲电流之前的室温下冷却至室温 受阻。
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公开(公告)号：KR1020100091348A
公开(公告)日：2010-08-19
申请号：KR1020090010495
申请日：2009-02-10
Applicant: 전북대학교산학협력단 , (주)하이엠시
CPC classification number: C22C29/08 , B22F2998/00 , B22F3/12 , C22C29/067 , C22C1/051 , C22C1/058
Abstract: PURPOSE: WC-Fe based alloy steel and a preparation method thereof are provided to restrict the growth of crystal grain in WC-Fe based alloy steel and improve the mechanical property by adding specific metal and compound in Fe. CONSTITUTION: WC-Fe based alloy steel comprises Fe 5~40 weight%, an element forming a solid solution with Fe 1~10 weight%, an element improving the wettability of junction positions with other materials, a compound for restricting the growth of grain, and the rest WC. The element forming a solid solution with Fe is one or more selected from the group consisting of Si, Ni, and Cr. The element improving wettability is one or more selected from the group consisting of B, C, B4C, and B203. The compound for restricting the growth of grain is one or more selected from the group consisting of Cr3C2 and VC.
Abstract translation: 目的：提供WC-Fe基合金钢及其制备方法，以限制WC-Fe基合金钢中晶粒的生长，并通过在Fe中加入特定的金属和化合物来提高机械性能。 构成：WC-Fe系合金钢含Fe 5〜40重量％，形成Fe 1〜10重量％的固溶体的元素，提高与其他材料的接合位置的润湿性的元素，限制晶粒生长的化合物 ，其余的WC。 用Fe形成固溶体的元素是选自Si，Ni和Cr中的一种或多种。 改善润湿性的元素是选自B，C，B 4 C和B 2 O 3中的一种或多种。 用于限制晶粒生长的化合物是选自Cr 3 C 2和VC中的一种或多种。
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