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1. 发明公开

KR1020080061313A 인성을 요하는 단공 드릴링 작업을 위한, ＣＶＤ 코팅된초경합금 인서트 无效
标题翻译： CVD涂层的碳化硅插件，用于韧性消除短孔钻孔操作
公开(公告)号：KR1020080061313A
公开(公告)日：2008-07-02
申请号：KR1020070137978
申请日：2007-12-26
申请人： 산드빅 인터렉츄얼 프로퍼티 에이비
发明人： 레난데르안데르스 , 키엘그렌얀 , 오그렌토르비에른 , 레이네브란트스테판 , 안데르손요아킴 , 그란스트룀로베르트
IPC分类号： C23C28/00 , C23C16/30
CPC分类号： C23C30/005 , B22F2005/001 , B22F2998/00 , B23B27/141 , B23B2222/28 , B23B2224/04 , B23B2224/32 , B23B2228/105 , Y10T428/24793 , C22C29/08
摘要： A CVD coated cutting tool insert useful for toughness demanding short hole drilling in steel is provided. In a cemented carbide insert comprising a substrate and a coating and having excellent toughness properties particularly useful for toughness demanding short hole drilling in general steels, the cemented carbide insert is characterized in that the substrate comprises WC having an average grain size of 0.5 to 1.5 mum, 8 to 11 wt.% of Co, preferably 9.5 to 10.5 wt.% of Co, and 0.2 to 0.5 wt.% of Cr, wherein the cobalt binder phase has a CW ratio of 0.80 to 0.90, and the coating comprises: - a first innermost layer of TiCxNyOz, where x+y+z=1, preferably y>x and z0.8 and z=0, coaxial grains of the first innermost layer have a size of less than 0.5 mum, and a total thickness of the first innermost layer is less than 1.5 mum, preferably more than 0.1 mum; - a layer of TiCxNyOz, where x+y+z=1, preferably z=0, x>0.3 and y>0.3, most preferably x>0.5, and the TiCxNyOz layer has columnar grains with a thickness of 1 to 8 mum, preferably 2 to 7 mum, most preferably less than 6 mum, and an average diameter of less than 5 mum, preferably 0.1 to 2 mum; a layer of Al2O3 consisting essentially of the K-phase having smooth and fine grains with a grain size of about 0.5 to 2 mum and a thickness of 0.5 to 5 mum, preferably 0.5 to 2 mum; and a further layer of TICxNyOz with a thickness of less than 1 mum, preferably 0.1 to 0.5 mum, where x+y+z=1, preferably y>x and z
摘要翻译：提供了一种可用于韧性要求在钢中短孔钻孔的CVD涂层切削刀具刀片。在包含基底和涂层并且具有优异韧性的硬质合金刀片中，特别适用于要求在一般钢中短孔钻削的韧性，硬质合金刀片的特征在于，该基底包括平均粒径为0.5-1.5μm的WC Co：8〜11重量％，Co优选9.5〜10.5重量％，Cr：0.2〜0.5重量％，其中，钴结合相的CW比为0.80〜0.90，涂层包括： TiCxNyOz的第一最内层，其中x + y + z = 1，优选地y> x和z0.8，z = 0，第一最内层的同轴晶粒的尺寸小于0.5μm，总厚度第一最内层小于1.5μm，优选大于0.1μm; - TiCxNyOz层，其中x + y + z = 1，优选z = 0，x> 0.3和y> 0.3，最优选x> 0.5，并且TiC x N y O z层具有厚度为1至8μm的柱状晶粒，优选2至7μm，最优选小于6μm，平均直径小于5μm，优选0.1至2μm; 基本上由具有粒径约0.5〜2μm，厚度0.5〜5μm，优选0.5〜2μm的光滑细小晶粒的K相组成的Al 2 O 3层，以及厚度小于1μm，优选0.1至0.5μm的另外的TICxNyOz层，其中x + y + z = 1，优选地y> x和z <0.3，其中在前刀面处，最外层的TiC x N y O z层和在与边缘线垂直的方向向内的边缘线和100um之间的前刀面区域的80％上完全或部分地去除Al 2 O 3层。

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