CERMET, CUTTING TOOL AND MANUFACTURING METHOD OF CERMET

• Main Authors: YAMANISHI TAKAHIRO, TSUDA KEIICHI
• Format: Patent
• Language: English; Japanese
• Published: 28.07.2016
• Subjects: ALLOYS; BORING; CASTING; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MACHINE TOOLS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; TURNING; WORKING METALLIC POWDER

PROBLEM TO BE SOLVED: To provide cermet suitable for a component of a cutting tool having superior defect resistance under a severe cut environment, a cutting tool using the cermet, and a manufacturing method of the cermet.SOLUTION: In cermet, hard phases containing Ti is bound by binder phases containing at least one of Ni and Co. When an observation visual field in any cross section of the cermet contains more than 200 hard phases, in the hard phases existing within the observation visual field, particle size of more than 70% of the hard phases in all hard phases is in ±30% of mean diameter of all hard phases.SELECTED DRAWING: Figure 1 【課題】過酷な切削環境下においても優れた耐欠損性を有する切削工具の構成材料に適したサーメット、そのサーメットを用いた切削工具、及びそのサーメットの製造方法を提供する。【解決手段】Ｔｉを含む硬質相が、Ｎｉ及びＣｏの少なくとも一方を含む結合相により結合されてなるサーメットであって、このサーメットの任意の断面において硬質相が２００個以上含まれる観察視野をとったとき、この観察視野内に存在する硬質相のうち、全硬質相数に対して７０％以上の硬質相の粒径が、前記全硬質相の平均粒径の±３０％以内であるサーメット。【選択図】図１