Abstract:
The present invention relates to coated cutting tool inserts particularly useful for heavy roughing turning operations of very large steel components, such as drive shafts for ships and shafts for wind power plants. The inserts are large with an iC, inscribed circle diameter, of greater than or equal to about 19 mm and a thickness of greater than or equal to about 6 mm with a composition of from about 5 to about 10 wt-% Co, from about 5 to about 12 wt-% cubic carbides or carbonitrides of the metals Ti, Ta and/or Nb, and balance WC with a stratified binder phase enriched surface zone from about 15 to about 40 μm thick. The inserts have an edge rounding before coating of 35-95 μm. The coating comprises a first, innermost layer of TiCxNyOz and a total thickness from about 0.1 to about 1.5 μm, a second layer of TiCxNy with a thickness of from about 4.5 to about 9.5 μm with columnar grains, a third layer of TiCxNyOz with a thickness of from about 0.3 to about 1.5 μm, a fourth layer of a smooth α-Al2O3 with a thickness of from about 4.5 to about 9.5 μm and, a from about 0.1 to about 2 μm thick colored top layer, preferably TiN or ZrN, on the clearance sides. The invention also relates to the method of making such inserts and the use thereof for heavy roughing turning operations of very large steel components.
Abstract translation:本发明涉及对于非常大的钢部件(例如用于船舶的驱动轴和用于风力发电厂的轴)的重型粗加工车削操作特别有用的涂覆切削刀具插入件。 插入件大,iC,内径圆直径大于或等于约19mm,厚度大于或等于约6mm,组成为约5至约10重量%Co,约为约 金属Ti,Ta和/或Nb的5至约12重量%的立方碳化物或碳氮化物,以及具有约15至约40μm厚的层状粘结相富集表面区域的平衡WC。 在35-95μm的涂层之前,刀片具有四边形的边缘。 涂层包括第一最内层的TiC x N y O z O z z,总厚度为约0.1至约1.5μm,第二层 层厚度为约4.5至约9.5μm的TiC x N N y Y层与柱状晶粒,第三层TiC x N N, 具有约0.3至约1.5μm的厚度的第三层平滑的α-Al 2 O 3 在间隙侧具有约4.5至约9.5μm厚度的厚度和约0.1至约2μm厚的着色顶层,优选为TiN或ZrN。 本发明还涉及制造这种刀片的方法及其用于非常大的钢部件的粗加工车削操作的用途。
Abstract:
The present invention relates to a method of machining a metal workpiece with a coated cutting tool insert comprising a cemented carbide body and a coating deposited as monolayer(s) or as multiple and/or alternating layers. The coating has a total thickness of 25-75 μm and the machining is performed at a cutting speed of >600 m/min, preferably 800-1500 m/min. The invention also relates to a coated cutting tool useful for such machining operation.
Abstract:
A cutting tool insert has a cermet body with a Co and/or Ni binder phase and a coating deposited as monolayer or as multiple and/or alternating layers of carbide, nitride or oxide. The coating has a thickness of 21-50 μm, when the inserts have a flat rake face, without or with simple chipbreakers and a Co binder phase, or has a thickness of 10-50 μm, when the inserts have a rake face land with a width of 100-300 μm with an angle of 10-25° to the rake face and a Co and/or Ni binder phase. The cermet body has more than 50 vol. % Ti-based carbonitride and less than 15 wt % and more than 6 wt % Co and/or Ni binder phase and a hardness of >1650 HV3. The disclosure also relates to the use of the coated cutting tool insert for the machining of cast iron work pieces.
Abstract:
The present invention relates to a method of making a cemented carbide body.The body is made using conventional powder metallurgical methods such as milling, pressing and sintering. According to the invention, a combined sintering process is used comprising at least a sequence where the batch of bodies in the sintering furnace is heated to a sintering temperature at least above the melting point of the binder phase. The batch of bodies in the sintering furnace is then allowed to cool down to a temperature at least below the melting point of the binder phase and kept there for at least from about 1 but preferably less than about 30 minutes and then heated up again to a sintering temperature at least above the binder phase melting point.The present invention also relates to a cemented carbide body made according to the method.
Abstract:
There is disclosed a coated cutting insert particularly useful for cutting in cast iron materials. The insert is characterized by a straight WC-Co cemented carbide body having a highly W-alloyed Co binder phase, a well-defined surface content of Co and a coating including an innermost layer of TiCxNyOz with columnar grains, a layer of a fine-grained, textured Al2O3 layer and a top layer of TiCxNyOz that has been removed along the cutting edge line.
Abstract translation:公开了一种特别适用于铸铁材料切割的涂层切削刀片。 该插入件的特征在于具有高W合金Co粘结相的直的WC-Co硬质合金体,Co的良好限定的表面含量和包括TiC的最内层的涂层, 具有柱状晶粒的层,细晶粒化的Al 2 O 3层3层和 已经沿着切割边缘线去除的顶层TiC x N y O z z z z z z z z z z z z z o z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z z y
Abstract:
There is disclosed a coated cutting insert particularly useful for cutting in cast iron materials. The insert is characterized by a straight WC-Co cemented carbide body having a highly W-alloyed Co binder phase, a well-defined surface content of Co and a coating including an innermost layer of TiC.sub.x N.sub.y O.sub.z with columnar grains, a layer of a fine-grained, textured Al.sub.2 O.sub.3 layer and a top layer of TiC.sub.x N.sub.y O.sub.z that has been removed along the cutting edge line.
Abstract translation:公开了一种特别适用于铸铁材料切割的涂层切削刀片。 该插入件的特征在于具有高W合金Co粘结相的直的WC-Co硬质合金体,Co的良好限定的表面含量和包括具有柱状晶粒的TiC x N y O z的最内层的涂层, 纹理的Al2O3层和沿着切割边缘线去除的TiC x N y O z的顶层。
Abstract:
The present invention relates to cutting insert for dry milling of hard cast steel with a hardness of from about 50 to about 65 HRC comprising a substrate and a coating. The substrate has a hardness of from about 1900 to about 2100 HV3, with a negative chamfer and an edge rounding of 0 (sharp) to about 40 μm. The coating comprises a homogeneous AlxTi1-xN-layer with x equals from about 0.6 to about 0.67 and a thickness of from about 1 to about 3.8 μm. The invention also relates to a method of making as well as the use of the inserts.
Abstract translation:本发明涉及用于硬质铸钢的硬磨削的切削刀片,其硬度为约50至约65HRC,包括基底和涂层。 基底具有约1900至约2100HV3的硬度,具有负斜面和0(锋利)至约40μm的圆边。 涂层包含均匀的Al x Ti 1-x N层,其x等于约0.6至约0.67,厚度为约1至约3.8μm。 本发明还涉及制造和使用插入物的方法。
Abstract:
The present invention relates to cutting insert for milling of hardened steels, tool steels and hard cast irons and stainless steels with a hardness of more than about 45 HRC comprising a substrate and a coating. The substrate has a hardness of from about 1700 HV3 to about 2000 HV3, with a 10° angle and 0.2 mm wide negative chamfer giving an edge sharpness of 0(sharp) to about 40 μm and the coating comprises a homogeneous AlxTi1-xN-layer with x=from about 0.6 to about 0.67, preferably x=about 0.62 and a thickness of more than about 1 to less than about 3.8 μm. The invention also relates to a method of making as well as the use of the inserts.
Abstract translation:本发明涉及用于铣削硬化钢,工具钢和硬铸铁的切削刀片和硬度大于约45HRC的不锈钢,其包括基底和涂层。 基底具有约1700HV3至约2000HV3的硬度,具有10°角和0.2mm宽的负斜面,其边缘清晰度为0(锋利)至约40μm,并且该涂层包含均匀的Al x x =约0.6至约0.67,优选x =约0.62,厚度大于约1至小于约3.8μm的Ti 1-x N层。 本发明还涉及制造和使用插入物的方法。
Abstract:
A cutting insert of a sintered carbonitride alloy and with a complicated geometry, the insert having improved efficiency. This is obtained by giving the powder non-uniform compaction during pressing of the powder into a press-body so that the ultimate working edges will have a higher relative density than the surrounding, more "supporting" material in the press-body. By these means are often obtained surface defects in the form of cracks because of dissolved strains during the sintering.
Abstract:
The present invention relates to coated cutting tool inserts particularly useful for heavy roughing turning operations of very large steel components, such as drive shafts for ships and shafts for wind power plants. The inserts are large with an iC, inscribed circle diameter, of greater than or equal to about 19 mm and a thickness of greater than or equal to about 6 mm with a composition of from about 5 to about 10 wt-% Co, from about 5 to about 12 wt-% cubic carbides or carbonitrides of the metals Ti, Ta and/or Nb, and balance WC with a stratified binder phase enriched surface zone from about 15 to about 40 μm thick. The inserts have an edge rounding before coating of 35-95 μm. The coating comprises a first, innermost layer of TiCxNyOz and a total thickness from about 0.1 to about 1.5 μm, a second layer of TiCxNy with a thickness of from about 4.5 to about 9.5 μm with columnar grains, a third layer of TiCxNyOz with a thickness of from about 0.3 to about 1.5 μm, a fourth layer of a smooth α-Al2O3 with a thickness of from about 4.5 to about 9.5 μm and, a from about 0.1 to about 2 μm thick colored top layer, preferably TiN or ZrN, on the clearance sides. The invention also relates to the method of making such inserts and the use thereof for heavy roughing turning operations of very large steel components.
Abstract translation:本发明涉及对于非常大的钢部件(例如用于船舶的驱动轴和用于风力发电厂的轴)的重型粗加工车削操作特别有用的涂覆切削刀具插入件。 插入件大,iC,内径圆直径大于或等于约19mm,厚度大于或等于约6mm,组成为约5至约10重量%Co,约为约 金属Ti,Ta和/或Nb的5至约12重量%的立方碳化物或碳氮化物,以及具有约15至约40μm厚的层状粘结相富集表面区域的平衡WC。 在35-95μm的涂层之前,刀片具有圆角。 该涂层包括第一最内层的TiC x N y O z和约0.1至约1.5μm的总厚度,厚度为约4.5至约9.5μm的具有柱状晶粒的第二TiC x N y层,厚度为约4.5至约9.5μm的第三层TiC x N y O z,其厚度为 约0.3至约1.5μm的第四层厚度为约4.5至约9.5μm的平滑α-Al 2 O 3,以及约0.1至约2μm厚的着色顶层,优选为TiN或ZrN, 间隙侧。 本发明还涉及制造这种刀片的方法及其用于非常大的钢部件的粗加工车削操作的用途。