JOINT, ITS USING METHOD, AND ITS MANUFACTURING METHOD

PROBLEM TO BE SOLVED: To provide a joint of a cemented carbide and binderless cemented carbide, which can improve joint strength while reducing selective exhaustion in a joint part.SOLUTION: In a joint, a surface layer and a back surface layer are jointed through an intermediate layer. The surface l...

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Bibliographische Detailangaben
Hauptverfasser:	KUROKI FUMIYA, MORI SHIGEKI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING LIME, MAGNESIA MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY PERFORMING OPERATIONS REFRACTORIES SLAG SOLDERING OR UNSOLDERING TRANSPORTING TREATMENT OF NATURAL STONE WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a joint of a cemented carbide and binderless cemented carbide, which can improve joint strength while reducing selective exhaustion in a joint part.SOLUTION: In a joint, a surface layer and a back surface layer are jointed through an intermediate layer. The surface layer is a binderless cemented carbide that does not contain a metallic phase, and the back surface layer is a cemented carbide that contains a metallic phase, and the intermediate layer contains the same metallic phase as that of the back surface layer in a range more than 0 mass% but lower than the amount of the metallic phase contained in the back surface layer.SELECTED DRAWING: Figure 3 【課題】接合部の選択的消耗を低減できるとともに接合強度を向上できる、超硬合金とバインダレス超硬合金との接合体を提供する。【解決手段】表面層と背面層とが中間層を介して接合されている接合体において、前記表面層は、金属相を含有しないバインダレス超硬合金であり、前記背面層は、金属相を含有する超硬合金であり、前記中間層は、前記背面層の金属相と同一の金属相を、０質量％を超え前記背面層中の金属相の含有量未満の範囲で含有することを特徴とする。【選択図】図３