분쇄·교반·혼합·혼련기 부재

• Main Authors: UENO SHUJI, WATANABE KEITA, KUROGI FUMIYA, TANAKA TAKAAKI, MASHIMA KATSUYA, MINAGAWA YASUNORI
• Format: Patent
• Language: Korean
• Published: 07.02.2023
• Subjects: ALLOYS; CASTING; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POWDER METALLURGY; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; WORKING METALLIC POWDER

본 발명은, 경량이며, 내충격성, 내마모성이 우수하고 또한 자성이 있는 분쇄·교반·혼합·혼련기 부재를 제공하여 이들 부재를 장수명화한다. 즉, 본 발명은, 원소별 질량비가 Ti:20∼45%, Mo:5∼35%, W:6∼30%, C:5∼15%, Co:10∼50%, Co와 Ni합계로 25 초과∼50%가 되도록 원료를 배합하고, 그것들을 혼합하여 혼합 분말을 얻고, 이 혼합 분말을 프레스 성형하여 프레스체를 얻고, 이 프레스체를 소결하여 얻어진 서멧으로 이루어진 분쇄·교반·혼합·혼련기 부재를 제공한다. 이 서멧은, TiCN을 주성분으로 하는 코어상(2)과, 코어상의 주위를 덮도록 존재하고 (Ti, Mo, W)(C, N)을 주성분으로 하는 림상(3)과, 금속상(4)의 3상을 가지고, 단면 조직 관찰에서의 코어상과 림상으로 이루어진 경질상의 평균 입경이 3μm 미만이며, SEM 관찰에 의해 WC상 및 Mo2C상을 관찰할 수 없다. The present invention provides pulverizing, stirring, mixing, and kneading machine members that each have a reduced weight, and excellent impact resistance and wear resistance, and further have magnetic properties, and that have a longer life. Specifically, the present invention provides pulverizing, stirring, mixing, and kneading machine members that each comprise a cermet which is obtained by blending raw materials such that the mass ratios of elements are 20-45% of Ti, 5-35% of Mo, 6-30% of W, 5-15% of C, and 10-50% of Co, the total of Co and Ni being more than 25% but not more than 50%, mixing the raw materials to obtain a mixed powder, compression molding the mixed powder to obtain a compressed body, and sintering the compressed body. This cermet has three phases which are a core phase 2 containing TiCN as a main component, a rim phase 3 that is present so as to cover the periphery of the core phase, and that contains (Ti, Mo, W) (C, N) as a main component, and a metal phase 4. The average particle size of a hard phase consisting of the core phase and the rim phase is less than 3 μm as observed in a cross-sectional structure, and a WC phase or a Mo2C phase cannot be observed by SEM observation.