CN101218371A - 涂层切削工具刀片 - Google Patents
涂层切削工具刀片 Download PDFInfo
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- 238000003801 milling Methods 0.000 claims abstract description 34
- 239000011248 coating agent Substances 0.000 claims abstract description 26
- 238000000576 coating method Methods 0.000 claims abstract description 26
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- 238000005516 engineering process Methods 0.000 claims description 14
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 12
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- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/40—Oxides
- C23C16/403—Oxides of aluminium, magnesium or beryllium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C16/34—Nitrides
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
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- C—CHEMISTRY; METALLURGY
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- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
- C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Y10T407/00—Cutters, for shaping
- Y10T407/27—Cutters, for shaping comprising tool of specific chemical composition
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
本发明公开了一种涂层切削工具刀片,这种涂层切削工具刀片尤其有用于具有或不具有粗糙表面区域的低合金钢、中合金钢、和不锈钢的干性加工和湿性加工,优选为铣削。这种刀片的特征在于:WC-TaC-NbC-C硬质合金具有W合金的Co粘结相,并且涂层包括具有柱状晶粒的TiCxNyOz最内层和至少在光滑的α-Al2O3的前刀面上的顶层。
Description
技术领域
本发明涉及一种涂层硬质合金切削工具刀片,这种刀片尤其有用于具有粗糙表面的低合金钢和中合金钢以及不锈钢的湿性切削和干性切削,优选地是铣削,粗糙表面例如为铸造外皮,锻造外皮,热轧外皮或冷轧外皮,或者预加工表面。
背景技术
当利用硬质合金切削工具加工低合金钢和中合金钢以及不锈钢时,切削刀刃遭受到根据不同机理的磨损,例如,化学磨损,研磨磨损,粘着磨损和由沿切削刀刃形成的裂缝而引起的切削刃碎裂,即所谓的梳状(comb)裂缝。在恶劣的切削条件下,通常发生膨胀和刃线断裂。
不同的工件材料和切削条件需要切削刀片的不同的特性。例如,当切削具有粗糙表面区域的钢制件,或者在其他困难条件下进行切削时,涂层硬质合金刀片必须基于坚韧的碳化物基底,并且必须具有拥有优异粘附力的涂层。当加工低合金钢和不锈钢时,粘着磨损通常为主要的磨损类型。在此,通常必须使用较薄(1-3μm)的CVD涂层或者PVD涂层。
对于特定的磨损类型,可以采取措施,以便改进或优化切削性能。然而,这种措施经常对其他的磨损特性具有负面作用。
一些可能的措施的影响如下:
1)通过降低粘结相含量,可以减少形成梳状裂缝。然而,低粘结相含量将降低切削刀片的韧性,这远不是所希望的。
2)通过增加涂层厚度,可以获得提高的研磨磨损性能。然而,较厚的涂层增加了剥落的危险,并且还将降低抗粘着磨损性能。
3)导致高切削刀刃温度的高切削速度下的加工和其他条件下的加工需要具有更高量的立方碳化物(WC-TiC-TaC-NbC的固态溶体)硬质合金,但是这种碳化物将促使形成梳状裂缝。
4)通过增加钴粘结相的含量,可以获得提高的韧度。然而,较高的钴含量降低了抗塑性变形性能。
迄今为止,难以同时提高所有的工具特性。因此,相对于上述磨损类型中的一种或多种以及因此相对于特定的切削应用领域,优化商用的硬质合金等级工具。
US 6,062,776公开了一种涂层切削工具刀片,这种涂层切削工具刀片尤其有用于在湿性或干性状态期间铣削具有或不具有粗糙表面区域的低合金钢和中合金钢。这种刀片的特征在于:具有低含量的立方碳化物和高含量的W合金粘结相的WC-Co硬质合金,包括具有柱状晶粒的TiCxNyOz最内层和具有TiN顶层的κ-Al2O3层的涂层。
US 6,406,224公开了一种涂层切削工具刀片,这种涂层切削工具刀片尤其有用于在高切削速度下铣削具有或者不具有研磨表面区域的合金钢。这种涂层切削工具刀片包括硬质合金主体,硬质合金主体的成分为7.1-7.9wt%的Co,金属Ta、Nb和Ti构成的0.2-1.8wt%的立方碳化物,和余量的WC。所述刀片涂覆有具有柱状晶粒的最内层TiCxNyOz和具有TiN顶层的κ-Al2O3层。
EP-A-736615公开了一种涂层切削刀片,这种涂层切削刀片尤其有用于对灰口铸铁进行干性铣削。所述刀片的特征在于:具有直线的WC-Co硬质合金基底,和由具有柱状晶粒的TiCxNyOz层和细晶织构化的α-Al2O3的顶层构成的涂层。
瑞典专利申请0500435-3公开了一种涂层切削工具刀片,这种涂层切削工具刀片适合于通过车削、铣削、钻削或者通过相类似的切屑成形加工方法而对金属进行加工。这种工具刀片尤其有用于需要断裂韧性(interrupted toughness)的切削操作。
US 6,200,71公开了一种涂层车削刀片,这种涂层车削刀片尤其有用于车削不锈钢。这种刀片的特征在于:具有高度W合金的Co粘结相的WC-Co基硬质合金基底,和包括具有柱状晶粒的TiCxNyOz最内层和TiN顶层和细晶κ-Al2O3内层。
本发明人在对市场上的工具用户进行了大量实验和多种测试之后意外地发现,可以通过组合多个具体特征而获得优选用于铣削的提高的切削工具刀片。这些组合的特征为:具体的硬质合金成分,一定的WC粒径,合金化的粘结相,包括多个限定层的内涂层,和光滑的顶部α-Al2O3前刀面层。
这种刀片优选地在湿性和干性加工的稳定条件下,对于具有或不具有粗糙表面区域的低合金钢和中合金钢具有改进的切削性能。此外,令人意外地是,本发明的切削工具刀片也可很好地用于不锈钢。相比于现有技术的刀片,根据本发明的切削工具在上述的多种磨损类型方面都具有提高的切削特性。尤其是改进了梳状裂缝韧度特性。
附图说明
图1表示顶视图形式的氧化铝层在喷砂之前的6000倍SEM图像,
图2表示顶视图形式的氧化铝层在喷砂之后的6000倍SEM图像的,
图3表示在进行端面铣削性能试验时,根据本发明的示例性刀片的磨损图案,
图4表示在进行端面铣削性能试验时,根据现有技术的刀片的磨损图案,
图5表示在进行端面粗铣性能试验时,根据本发明的示例性刀片的磨损图案,
图6表示在进行端面粗铣性能试验时,根据现有技术的刀片的磨损图案。
具体实施方式
根据本发明的切削工具刀片包括硬质合金主体,硬质合金主体具有W合金的Co粘结相,较好平衡的化学成分,和精选粒径的WC;涂层,涂层包括柱形TiCxNyOz内层,跟着是光滑的α-Al2O3顶层,TiN层优选为位于刀片的间隙面上的顶层。
根据本发明,提供一种涂层切削工具刀片,这种涂层切削工具刀片包括硬质合金主体,硬质合金主体的成分为8.5-9.7wt%的Co,优选为8.6-9.8wt%的Co,最优选为8.7-9.3wt%的Co,和1.00-1.45wt%的TaC,优选为1.18-1.28wt%的TaC,和0.10-0.50wt%的NbC,优选为0.25-0.35wt%的NbC和余量的WC。硬质合金主体还可包括较少量的其它元素,但是这些元素的含量水平相当于技术意义上的杂质。矫顽力的范围为11.7-13.3kA/m,优选为在12.1-12.9kA/m的范围内。
钴粘结相与一定量的W合金化,从而为发明的硬质合金切削刀片提供了它所需的特性。粘结相中的W影响钴的磁性,并且因此可与CW比的值有关,CW比定义如下
CW比=磁性%Co/wt%Co,
其中磁性%Co为磁性Co在硬质合金中的重量百分数,wt%Co为Co在硬质合金中的重量百分数。
CW比根据合金化的程度而在1和大约0.75之间变化。低CW比相当于较高的W含量,CW比=1实际上相当于在粘结相中不存在W。
已经发现的是,如果硬质合金的CW比为0.85-<1.00,优选为0.86-0.95,最优选为0.88-0.93,则获得提高的切削性能。
硬质合金还可包含少量的η相(M6C),即体积比小于1%的η相,而不会有任何不利的影响。由于指定的CW比(<1),故在根据本发明的硬质合金主体中不允许存在游离的石墨。
硬质合金刀片至少局部地涂覆有4.1-6.9μm厚的涂层,这种涂层包括至少三层TiCxNyOz。这三层至少在前刀面上形成了具有作为外层的α-Al2O3层的内涂层。TiCxNyOz层的总厚度为1.9-3.6μm,所述TiCxNyOz层包括:
第一TiCxNyOz层,其邻近于硬质合金,具有成分,其中x+y=1,x>=0,优选地,x<0.2,且z=0。
第二TiCxNyOz层,具有成分,其中x>0.4,y>0.4,且0=<z<0.1,优选地,z=0。
第三TiCxNyOz层,其邻近于α-Al2O3层,具有成分,其中x+y+z>=1,且z>0,优选地,z>0.2,x+y+z=1,且y<0.2。
外部α-Al2O3层的厚度为1.8-3.6μm,并且在已经进行喷砂处理的表面上具有修平的晶粒。
在优选实施例中,刀片优选地在后刀面处具有0.1-1μm的彩色顶层,优选为TiN,TiCN,TiC,ZrN或HfN层,顶层最优选地通过CVD技术沉积。
本发明还涉及一种通过粉末冶金技术制造涂层切削工具刀片的方法,所述方法包括以下步骤:对粉末成形硬质组分和粘结相进行湿性铣削,将铣削后的混合物压实形成所期望形状和尺寸的主体,并且进行烧结,这种涂层切削工具刀片包括硬质合金主体,硬质合金主体的成分为8.5-9.7wt%的Co,优选为8.6-9.8wt%的Co,最优选为8.7-9.3wt%的Co;和1.00-1.45wt%的TaC,优选为1.18-1.28wt%的TaC;和0.10-0.50wt%的NbC,优选为0.25-0.35wt%的NbC;和余量的WC。硬质合金主体还可包含较少量的其它元素,但是这些元素的含量水平相当于技术意义上的杂质。选择铣削和烧结条件,以获得烧结构造,烧结构造的矫顽力的范围为11.7-13.3kA/m,优选为在12.1-12.9kA/m的范围内。CW比为0.85-<1.00,优选为0.86-0.95,最优选为0.88-0.93。
硬质合金刀片主体至少局部地涂覆有4.1-6.9μm厚的涂层,涂层包括形成内涂层的至少三层TiCxNyOz,以及作为至少在前刀面上的外层的喷砂处理的α-Al2O3层。TiCxNyOz层的总厚度为1.9-3.6μm,所述TiCxNyOz层包括:
第一TiCxNyOz层,其邻近于硬质合金,成分为x+y=1,x>=0,优选地,x<0.2,且z=0,其利用已知的CVD方法,利用包括TiCl4,H2和N2的反应混合物,
第二TiCxNyOz层,成分为x>0.4,y>0.4,且0=<z<0.1,优选地,z=0,其利用熟知的MTCVD技术,温度为885-850℃,并且CH3CN作为碳/氮源,
第三TiCxNyOz层,其邻近于α-Al2O3层,成分为x+y+z>=1,且z>0,优选地,z>0.2,且x+y+z=1,且y<0.2,其利用已知的CVD方法,利用包括TiCl4,H2和N2的反应混合物,
所述α-Al2O3层,厚度为1.8-3.6μm,并且在经过喷砂处理的表面上具有修平的晶粒,通过利用已知的CVD技术沉积,
第三TiCxNyOz层,其邻近于α-Al2O3层,成分为x+y+z>=1,且z>0,优选地,z>0.2,且x+y+z=1,且y<0.2,利用已知的CVD方法,利用一种反应混合物,该反应混合物包括TiCl4,H2和N2,
α-Al2O3层,厚度为1.8-3.6μm,利用已知的CVD技术沉积,和至少在前刀面上对刀片进行喷砂处理。
在一个实施例中,在喷砂处理之前,优选地利用CVD技术,在α-Al2O3层的顶部上沉积另外的0.1-1μm的彩色层,优选为TiN,TiCN,TiC,ZrN或HfN层。
在另一个实施例中,在喷砂处理之后,利用CVD技术或PVD技术优选地利用CVD技术,至少在后刀面上沉积另外的0.1-1μm的彩色顶层,优选为TiN,TiCN,TiC,ZrN或HfN层。
本发明还涉及利用上述刀片,在根据如下表的切削速度和进给速度下,对具有诸如铸造外皮、锻造外皮、热轧外皮或冷轧外皮、或预加工表面的粗糙表面的低合金钢、中合金钢和不锈钢进行湿性和干性加工,优选地进行铣削:
90°咬入角的铣削:
切削速度:25-400m/min,优选为150-300m/min,进给速率:0.04-0.4mm/齿
端面铣削(45-75°咬入角):
切削速度:25-400m/min,优选为150-300m/min,进给速率:0.05-0.7mm/齿,
高速进给和圆形刀片铣削概念:切削速度:25-500m/min,进给速率:0.30-3.0mm/齿,优选为0.3-1.8mm/齿。
示例1(本发明)
硬质合金铣削刀片采用如下类型:R390-11T308M-PM,R390-170408M-PM,R245-12T3M-PM,R300-1648M-PH和R300-1240M-PH,成分为9.1wt%的Co,1.25wt%的TaC,0.28的wt%NbC和余量的WC,矫顽力为12.5kA/m,相当于WC粒径为大约1.7μm,并且在Foerster Instruments Inc.的FRSTER KOERZIMAT CS 1.096所测量的CW比为0.91。刀片的涂层如下:
第一层0.5μm的TiCxNyOz,成分为大约x=0.05,y=0.95,z=0,利用已知的CVD方法,利用一种反应混合物,该反应混合物包括TiCl4,H2和N2,
第二层1.7μm的柱形TiCxNyOz,成分为大约x=0.55,y=0.45,z=0,利用熟知的MTCVD技术,温度为885-850C,并且CH3CN作为碳/氮源,和
第三粘结层,0.5μm的TiCxNyOz。第三层的晶粒为针状的,并且成分为大约x=0.5,y=0,z=0.5,
第四层,其包括2.5μm的α-Al2O3,并且最后,大约0.3μm的TiN的顶层通过利用已知的CVD技术沉积。XRD测量证实Al2O3层为100%的α相。
在涂覆周期之后,刀片的顶侧(前刀面)利用包括Al2O3粗砂和水的浆液进行强烈的湿喷。这个喷砂处理去除了位于前刀面上的顶部TiN层,从而露出大多数晶粒被修平的光滑的α-Al2O3。图1以6000倍SEM图像的顶视图表示在喷砂之前的氧化铝层,图2以6000倍SEM图像的顶视图表示在喷砂之后的氧化铝层,根据本发明,氧化铝层的大多数晶粒被修平。
示例2(现有技术)
硬质合金铣削刀片采用如下类型:R390-11T308M-PM,R390-170408MM-PM,R245-12T3M-PM,R300-1648M-PH和R300-1240M-PH,成分为9.1wt%的Co,1.25wt%的TaC,0.28wt%的NbC和余量的WC,矫顽力为12.3kA/m,相当于WC粒径为大约1.7μm,和Foerster Instruments Inc.的KOERZIMAT CS 1.096测量的CW比为0.92。刀片的涂层如下:
第一层0.5μm等轴的TiCxNyOz层(具有相当于估算的x=0.95和y=0.05的较高氮含量),跟着是
4μm厚的TiCN层,具有柱状晶粒,利用MTCVD技术,温度为885-850℃,并且利用CH3CN作为碳/氮源。在随后的步骤中,在相同的涂覆周期期间,如EP-A-523021所公开的,利用温度970℃和浓度为0.4%的H2S掺杂剂沉积1.0μm厚的Al2O3层。根据已知的CVD技术,在顶部沉积较薄的0.3μm的TiN层。XRD测量表明Al2O3层为100%的κ(相。
示例3
在切削测试中比较来自示例1和2的不同类型的刀片。
操作1:端面铣削,Coromill 245-80mm
工件:测试件
材料:SS2541(P20),300HB,中合金钢
切削速度:280m/min
进给速率/齿:0.24mm/齿
切削深度:2mm
刀片类型:R245-12T3M-PM
附注:1个刀片,湿性,由于在铣刀出口处的较重的切屑负载,故需要非常坚韧
工具寿命的标准为刀刃线的碎裂和断裂。改进的刀刃线韧性获得更少的梳状裂缝、更高的安全性和更好的表面光洁度。
结果:在切削8分钟后的磨损
本发明A:见图3
现有技术B:见图4
操作2:仿形铣削,Coromill 200-2英寸
工件:钢制装饰条
材料:SS2260(A2),250HB,高合金钢
切削速度:446m/min
进给速率/齿:0.9mm/齿
切削深度:0.9mm
刀片类型:RCKT-1304000-PH
附注:铣削刀具中的5个刀片,干性
工具寿命的标准为侧面磨损和刀刃线碎裂。
更好的抗磨损性和更好的刀刃线韧性的组合将显著地增加工具寿命。
结果:工具寿命制造出的零件
本发明A:14个
现有技术B:11个
操作3:利用螺旋插补的铣削,Coromill 390-63mm
工件:发动机板
材料:低合金钢
切削速度:290m/min
进给速率/齿:0.21mm/齿
刀片类型:R390-170408M-PM
附注:干性,5个刀片,需要较高韧度的操作
工具寿命的标准为碎裂。由于更好的刀刃线安全性,故可更好地预测磨损特性。
结果:工具寿命 分钟
本发明A:93分钟
现有技术B:28分钟
操作4:端面粗铣,Coromill 245-100mm
工件:模具支承件
材料:高合金钢,200HB
切削速度:176m/min
进给速率/齿:0.33mm/齿
切削深度:2-3mm
刀片类型:R245-12T3M-PM
附注:7个刀片,干性
工具寿命的标准为刀刃线的碎裂。改进的结果在无人加工期间获得更好的可靠性。
结果:在切削90分钟后的磨损
本发明A:见图5
现有技术B:见图6
操作5:端面粗铣,R245-100mm
工件:缓冲器90度
材料:SS2225-23铸造低合金钢270HB,不均匀的硬度
切削速度:180m/min
进给速率/齿:0.2mm/齿
切削深度:0-5mm
刀片类型:R245-12T3M-PM
附注:干性,7个刀片,韧性夹砂
工具寿命的标准为碎裂。更好的刀刃线韧度增加工具寿命。
结果:工具寿命分钟
本发明A:39分钟
现有技术B:31分钟
从切削测试获得的结果,明显的是,示例1的刀片胜过根据示例2的现有技术的刀片。
Claims (8)
1.一种切削工具铣削刀片,其用于在湿性或干性条件期间加工具有或不具有粗糙表面的低合金钢、中合金钢、和不锈钢,这种刀片包括硬质合金主体和涂层,其特征在于:所述硬质合金主体的成分为8.5-9.7wt%的Co,优选为8.6-9.8wt%的Co,最优选为8.7-9.3wt%的Co;和1.00-1.45wt%的TaC,优选为1.18-1.28wt%的TaC;和0.10-0.50wt%的NbC,优选为0.25-0.35wt%的NbC和余量的WC,矫顽力的范围为11.7-13.3kA/m,优选为在12.1-12.9kA/m的范围内,并且CW比为0.85-<1.00,优选为0.86-0.95,最优选为0.88-0.93,并且
所述刀片至少局部地涂覆有4.1-6.9μm厚的涂层,所述涂层包括总厚度为1.9-3.6μm的至少三层TiCxNyOz,其中一层涂层邻近于硬质合金,喷砂的α-Al2O3层为至少在前刀面上的外层,总厚度为1.9-3.6μm的所述TiCxNyOz层包括:
第一TiCxNyOz层,其邻近于所述硬质合金,具有成分,其中x+y=1,x>=0,优选地,x<0.2,且z=0;
第二TiCxNyOz层,具有成分,其中x>0.4,y>0.4,且0=<z<0.1,优选地,z=0;
第三TiCxNyOz层,其邻近于所述α-Al2O3层,具有成分,其中x+y+z>=1,且z>0,优选地,z>0.2,x+y+z=1,且y<0.2;和
所述α-Al2O3层的厚度为1.8-3.6μm,并且在进行喷砂处理的表面上具有修平的晶粒。
2.如权利要求1所述的切削刀片,其特征在于:所述硬质合金的成分为8.6-9.5wt%的Co,1.00-1.45wt%的TaC和0.10-0.50wt%的NbC。
3.如权利要求1所述的切削刀片,其特征在于:在所述后刀面处具有0.1-1μm的彩色顶层。
4.如权利要求3所述的切削刀片,其特征在于:所述彩色顶层包括TiN,TiCN,TiC,ZrN和/或HfN,通过CVD技术或PVD技术沉积,优选通过CVD技术沉积。
5.一种通过粉末冶金技术制造包括硬质合金主体和涂层的切削刀片的方法,所述方法包括以下步骤:对粉末成形硬质组分和粘结相进行湿性铣削,将铣削过的混合物压实形成具有所期望形状和尺寸的主体,并且进行烧结,其特征在于,所述硬质合金主体的成分为8.5-9.7wt%的Co,优选为8.6-9.8wt%的Co,最优选为8.7-9.3wt%的Co;和1.00-1.45wt%的TaC,优选为1.18-1.28wt%的TaC;和0.10-0.50wt%的NbC,优选为0.25-0.35wt%的NbC;和余量的WC,矫顽力的范围为11.7-13.3kA/m,优选为在12.1-12.9kA/m的范围内,CW比为0.85-<1.00,优选为0.86-0.95,最优选为0.88-0.93,并且所述硬质合金刀片主体至少局部地涂覆有4.1-6.9μm厚的涂层,所述涂层包括形成内涂层的至少三层TiCxNyOz,以及作为至少在前刀面上的外层的α-Al2O3层,由此总厚度为1.9-3.6μm的所述TiCxNyOz层包括:
第一TiCxNyOz层,其邻近于所述硬质合金,具有成分,其中x+y=1,x>=0,优选地,x<0.2,且z=0,利用已知的CVD方法,利用包括TiCl4,H2和N2的反应混合物,
第二TiCxNyOz层,具有成分,其中x>0.4,y>0.4,且0=<z<0.1,优选地,z=0,利用熟知的MTCVD技术,温度为885-850℃,并且CH3CN作为碳/氮源,
第三TiCxNyOz层,其邻近于α-Al2O3层,具有成分,其中x+y+z>=1,且z>0,优选地,z>0.2,x+y+z=1,且y<0.2,利用已知的CVD方法,利用包括TiCl4,H2和N2的反应混合物,
所述α-Al2O3层,厚度为1.8-3.6μm,通过利用已知的CVD技术沉积,并且
至少在所述前刀面上对所述刀片进行喷砂处理。
6.如权利要求6所述的方法,其特征在于,在喷砂处理之前,优选地利用CVD技术,在α-Al2O3层的顶部上沉积另外的0.1-1μm厚的彩色层,优选地沉积TiN,TiCN,TiC,ZrN或HfN层。
7.如权利要求6所述的方法,其特征在于,在喷砂处理之后,最优选地利用CVD技术,在所述后刀面处沉积另外的0.1-1μm的彩色顶层,优选地沉积TiN,TiCN,TiC,ZrN或HfN层。
8.使用如权利要求1-4所述的刀片用于湿性铣削和干性铣削具有诸如铸造外皮、锻造外皮、热轧外皮或冷轧外皮、或者预加工表面的粗糙表面的低合金钢、中合金钢和不锈钢,铣削在根据如下条件的切削速度和进给速率下,在稳定条件下进行:
90°咬入角的铣削,切削速度为25-400m/min,优选为150-300m/min,并且进给速率为0.04-0.4mm/齿,或者
45-75°咬入角的端面铣削,切削速度为25-400m/min,优选为150-300m/min,并且进给速率为0.05-0.7mm/齿,或者
高速进给的圆形刀片铣削应用,切削速度为25-500m/min,优选为150-400m/min,并且进给速率为0.30-3.0mm/齿,优选为0.3-1.8mm/齿。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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SE0502777A SE529856C2 (sv) | 2005-12-16 | 2005-12-16 | Belagt hårdmetallskär, sätt att tillverka detta samt dess användning för fräsning |
SE05027776 | 2005-12-16 |
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CN101218371A true CN101218371A (zh) | 2008-07-09 |
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CNA2006800252557A Pending CN101218371A (zh) | 2005-12-16 | 2006-11-23 | 涂层切削工具刀片 |
CN2006101700618A Active CN1982052B (zh) | 2005-12-16 | 2006-12-15 | 涂覆切削刀片 |
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CN2006101700618A Active CN1982052B (zh) | 2005-12-16 | 2006-12-15 | 涂覆切削刀片 |
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US (2) | US20090214306A1 (zh) |
EP (2) | EP1963544A4 (zh) |
JP (2) | JP2009519139A (zh) |
KR (2) | KR20080083619A (zh) |
CN (2) | CN101218371A (zh) |
IL (2) | IL180060A (zh) |
SE (1) | SE529856C2 (zh) |
WO (1) | WO2007069973A1 (zh) |
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CN114222643A (zh) * | 2019-08-30 | 2022-03-22 | 山特维克科洛曼特公司 | 处理涂层切削工具的方法 |
CN115038811A (zh) * | 2020-02-28 | 2022-09-09 | 山特维克科洛曼特公司 | 涂层切削工具 |
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-
2005
- 2005-12-16 SE SE0502777A patent/SE529856C2/sv not_active IP Right Cessation
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2006
- 2006-11-23 JP JP2008545535A patent/JP2009519139A/ja active Pending
- 2006-11-23 EP EP06813037A patent/EP1963544A4/en not_active Withdrawn
- 2006-11-23 US US11/921,181 patent/US20090214306A1/en not_active Abandoned
- 2006-11-23 KR KR1020087001292A patent/KR20080083619A/ko not_active Application Discontinuation
- 2006-11-23 WO PCT/SE2006/001330 patent/WO2007069973A1/en active Application Filing
- 2006-11-23 CN CNA2006800252557A patent/CN101218371A/zh active Pending
- 2006-12-06 EP EP06125502.2A patent/EP1798309B1/en active Active
- 2006-12-08 US US11/635,782 patent/US8043729B2/en active Active
- 2006-12-14 IL IL180060A patent/IL180060A/en not_active IP Right Cessation
- 2006-12-15 CN CN2006101700618A patent/CN1982052B/zh active Active
- 2006-12-15 KR KR1020060128946A patent/KR101326325B1/ko active IP Right Grant
- 2006-12-15 JP JP2006339007A patent/JP2007160504A/ja active Pending
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2007
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114222643A (zh) * | 2019-08-30 | 2022-03-22 | 山特维克科洛曼特公司 | 处理涂层切削工具的方法 |
CN115038811A (zh) * | 2020-02-28 | 2022-09-09 | 山特维克科洛曼特公司 | 涂层切削工具 |
Also Published As
Publication number | Publication date |
---|---|
EP1798309A2 (en) | 2007-06-20 |
SE529856C2 (sv) | 2007-12-11 |
CN1982052A (zh) | 2007-06-20 |
WO2007069973A1 (en) | 2007-06-21 |
US8043729B2 (en) | 2011-10-25 |
JP2007160504A (ja) | 2007-06-28 |
IL180060A0 (en) | 2008-01-20 |
IL180060A (en) | 2011-08-31 |
JP2009519139A (ja) | 2009-05-14 |
EP1798309B1 (en) | 2014-05-21 |
EP1798309A3 (en) | 2007-10-17 |
CN1982052B (zh) | 2012-11-14 |
EP1963544A4 (en) | 2012-12-12 |
SE0502777L (sv) | 2007-06-17 |
EP1963544A1 (en) | 2008-09-03 |
IL188008A0 (en) | 2008-03-20 |
KR20080083619A (ko) | 2008-09-18 |
US20090214306A1 (en) | 2009-08-27 |
KR20070064412A (ko) | 2007-06-20 |
KR101326325B1 (ko) | 2013-11-11 |
US20070148497A1 (en) | 2007-06-28 |
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