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SURFACE COATED HIGH-SPEED TOOL STEEL-MADE GEAR CUTTING TOOL HAVING HARD COATING LAYER EXHIBITING EXCELLENT WEAR RESISTANCE IN HIGH-SPEED GEAR CUTTING OF ALLOY STEEL
SURFACE COATED HIGH-SPEED TOOL STEEL-MADE GEAR CUTTING TOOL HAVING HARD COATING LAYER EXHIBITING EXCELLENT WEAR RESISTANCE IN HIGH-SPEED GEAR CUTTING OF ALLOY STEEL
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机译:高速钢切削时,表面涂层的高速切削钢制齿轮切削刀具具有优异的耐磨性的硬涂层
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摘要
PROBLEM TO BE SOLVED: To provide a surface coated high-speed tool steel-made gear cutting tool having a hard coating layer exhibiting excellent wear resistance in high-speed gear cutting of alloy steel.;SOLUTION: In this surface coated high-speed tool steel-made gear cutting tool, a hard coating layer is formed on the surface of a high-speed tool steel base by vapor deposition. The hard coating layer is composed of (a) an upper layer and a lower layer, both of which are formed of (Ti, Al, Cr) N, the upper layer has the average layer thickness ranging from 0.5 to 1.5 μm, and the lower layer has the average layer thickness ranging from 2 to 6 μm. (b) The upper layer has an alternately stacking structure in which a thin layer A and a thin layer B respectively having the average layer thickness ranging from 5 to 20 nm are stacked. The thin layer A is formed of (Ti, Al, Cr) N layer satisfying a composition formula: [Ti1-(A+B)AlACrB] N, and the thin layer B is formed of (Ti, Al, Cr) N layer satisfying a composition formula: [Ti1-(C+D)AlCCrD] N. (c) The lower layer has a single phase structure and it is formed of (Ti, Al, Cr) N layer satisfying a composition formula: [Ti1-(E+F)AlECrF] N.;COPYRIGHT: (C)2007,JPO&INPIT
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机译:解决的问题:提供一种具有硬质涂层的表面涂层高速工具钢制齿轮切削刀具,该涂层在合金钢的高速齿轮切削中具有优异的耐磨性。在钢制齿轮切削刀具上,通过汽相淀积在高速工具钢基体的表面上形成一层硬涂层。硬涂层由(a)上层和下层组成,二者均由(Ti,Al,Cr)N形成,上层的平均层厚度为0.5至1.5μm,下层的平均层厚度为2至6μm。 (b)上层具有交替堆叠的结构,其中分别堆叠平均层厚度为5至20nm的薄层A和薄层B。薄层A由满足组成式:[Ti 1-(A + B) Sub> Al A Sub> Cr 的(Ti,Al,Cr)N层形成。 B Sub>] N,并且薄层B由满足组成公式:[Ti 1-(C + D) Sub> Al 的(Ti,Al,Cr)N层形成(c)下层具有单相结构,并且由满足组成式:[Ti 1-(E + F) Sub> Al E Sub> Cr F Sub>] N .;版权:(C)2007,日本特许厅&INPIT
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