WO2017110103A1 - Outil de coupe à revêtement de surface - Google Patents

Outil de coupe à revêtement de surface Download PDF

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Publication number
WO2017110103A1
WO2017110103A1 PCT/JP2016/059356 JP2016059356W WO2017110103A1 WO 2017110103 A1 WO2017110103 A1 WO 2017110103A1 JP 2016059356 W JP2016059356 W JP 2016059356W WO 2017110103 A1 WO2017110103 A1 WO 2017110103A1
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Prior art keywords
layer
phase
tin
flank
tino
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PCT/JP2016/059356
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English (en)
Japanese (ja)
Inventor
亮介 山口
晃浩 村上
佳祐 羽富
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Mitsubishi Materials Corp
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Mitsubishi Materials Corp
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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
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material

Definitions

  • the present invention relates to a surface-coated cutting tool (hereinafter simply referred to as “coated tool”) having excellent welding resistance and chipping resistance in cutting of carbon steel, alloy steel, and the like, and also having corner identification. It is.
  • a base body (hereinafter referred to as a tool base body) composed of a tungsten carbide (hereinafter referred to as WC) base cemented carbide or titanium carbonitride (hereinafter referred to as TiCN) base cermet, Carbide (hereinafter referred to as TiC) layer, nitride (hereinafter also referred to as TiN) layer, carbonitride (hereinafter referred to as TiCN) layer, carbonate (hereinafter referred to as TiCO) layer and carbonitride oxide (A coated tool provided with a hard coating layer composed of an Al 2 O 3 layer having an ⁇ -type crystal structure as an upper layer, and a Ti compound layer composed of one or more of the layers (hereinafter referred to as TiCNO).
  • TiCNO titanium carbonitride
  • Patent Document 1 in a coated tool in which a lower layer made of a Ti compound layer and an upper layer made of an Al 2 O 3 layer are formed, an abrasive layer made of a TiN layer is chemically vapor deposited on the entire upper layer. Then, the surface of the Al 2 O 3 layer constituting the upper layer is polished by performing a wet blasting process while leaving the abrasive layer around the tool attachment hole and the Al 2 O 3 layer. It has been proposed to improve the chipping resistance in high-speed cutting by making the surface roughness of the rake face and the flank face including the cutting edge ridge line of Ra: 0.2 ⁇ m or less. In addition, smoothing the hard coating layer surface of a coating tool by performing a wet blasting process is a technique already known as shown in Patent Document 2 and Patent Document 3, for example.
  • a TiN layer with a golden color is deposited on the outermost surface of the hard coating layer in order to give the corner identification of the coated tool (identification before and after use of the corner of the coated tool, discrimination of unused / used).
  • Formed coated tools have also been proposed.
  • the used corner exhibits from golden color (color tone of the TiN layer) to black gray or black (Al 2 O 3 layer). This is because the change in color tone can be known with the naked eye, and thus it is possible to easily determine whether the corner is a used corner or an unused corner.
  • a hard coating layer of a coated tool is configured by at least two layers, and the two layers are MeCxNyOz layers as outermost layers, and the inner layers are fine. It is an Al 2 O 3 layer having a grain structure, and after forming the two layers, the outermost MeCxNyOz layer is removed along at least the edge line by performing a brushing process or a blasting process, while the MeCxNyOz on the flank face is removed. It has been proposed that the layer is left on the flank as it is to impart corner discrimination to the coated tool.
  • Patent Document 5 discloses a corner identification in which a base layer (for example, Al 2 O 3 layer) is provided on at least a rake face of a tool base, and a use state display layer (for example, TiN layer) is formed on a flank of the tool.
  • a base layer for example, an Al 2 O 3 layer
  • the base layer for example, a usage state display layer (for example, a TiN layer) is coated on an Al 2 O 3 layer), and then the usage state display layer (for example, a TiN layer) on the rake face is removed by brushing, sandblasting, or the like.
  • a base layer (for example, an Al 2 O 3 layer) is provided on the main body of the tool base, and a usage state display layer having a color different from that of the base layer is provided on the base layer.
  • the state display layer is on the flank and on the entire surface or a part of the base layer of the region (A2) excluding the region (A1) extending at a distance of 0.2 mm to 3.0 mm in the direction perpendicular to the edge of the blade edge.
  • the base layer in the region (A1) has a compressive residual stress of 0.1 GPa or more in absolute value, the surface roughness Ra of the region (A1) is A ⁇ m, and the surface roughness Ra of the region (A2) It has been proposed that 1.0> A / B when B is B ⁇ m. Further, the compressive residual stress to the base layer is applied by, for example, a blast method, and further, brush operation and blasting are adopted as a means for forming a use state display layer in the region (A2) excluding the region (A1). It has been proposed that the edge of the cutting edge can be smoothed.
  • Patent Document 7 the outermost layer in the vicinity of the blade edge is polished so that the convex portions of the sharp Al 2 O 3 layer surface are flatly polished and distributed in an island shape, and are polished between them. It has been proposed to have an outermost layer consisting of no TiN.
  • the surface smoothness of the rake face and the flank face including the cutting edge ridge line portion can be improved by wet blasting, so that excellent welding resistance and chipping resistance are exhibited.
  • the corner identification function is not provided, it is difficult to distinguish between used corners and unused corners.
  • a MeCxNyOz layer is left on the flank
  • a usage state display layer for example, It is possible to identify the use / non-use of corners because the (TiN layer) remains, but the surface smoothness of the flank is inferior and the tensile residual stress of the Al 2 O 3 layer is not sufficiently reduced.
  • the surface roughness of the region (A1) that is wide with a distance of 0.2 mm or more and 3.0 mm in the direction perpendicular to the edge of the cutting edge is the region (A2). )
  • the surface smoothness of the work material is not impaired, but it is difficult to accurately form the use state display layer only in the A2 region.
  • the coated tool shown in Patent Document 7 since TiN remains on the rake face, chipping resistance is not satisfactory, and since only the contact of chips is considered, In this case, the contact portion with the work material exceeds the vicinity of the cutting edge, and the work material surface is roughened.
  • the present inventors improve the cutting performance such as welding resistance, chipping resistance, and fracture resistance without damaging the surface smoothness of the work material, and easily identify the use / non-use of corners.
  • the following findings were obtained.
  • the main surface of the rake face is composed of the Al 2 O 3 layer, while the flank outermost surface Is formed as a smooth mixed phase of TiN phase and Al 2 O 3 phase or a mixed phase of TiNO phase and Al 2 O 3 phase, surface smoothness of work material, welding resistance,
  • the present inventors have found that the use / nonuse of corners can be easily identified without impairing chipping resistance and chipping resistance. That is, according to the coated tool of the present invention, the outermost surface of the hard coating layer formed on the flank surface is smooth, a mixed phase of TiN phase and Al 2 O 3 phase, or TiNO phase and Al 2 O 3 phase.
  • the unused corner portion has a golden color (color tone exhibited by the TiN phase) or a cream color (color tone exhibited by the TiNO phase), and is black-gray or black (Al 2 after use).
  • to change the color tone) presented by the O 3 layer by knowing the color change, it is possible to easily and reliably determine whether the unused corner or a spent corner.
  • it is not necessary to configure all the outermost surfaces of the flank with the mixed phase and it is necessary to identify the use / non-use of corners, that is, the outermost of some flank.
  • the surface may be formed of the mixed phase.
  • the mixed phase of the TiN phase and the Al 2 O 3 phase or the mixed phase of the TiNO phase and the Al 2 O 3 phase forms, for example, at least an Al 2 O 3 layer on the rake face and flank face of the tool base. Then, a TiN layer or a TiNO layer is formed on the surface of the Al 2 O 3 layer, and then almost all of the TiN layer or the TiNO layer is removed from the rake face, so that the TiN phase or TiNO phase on the outermost surface of the rake face is removed.
  • the residual ratio is set to 5% by area or less.
  • a TiN phase and an Al 2 O 3 phase are formed on the outermost surface of the flank.
  • a mixed phase or a mixed phase of TiNO phase and Al 2 O 3 phase can be formed.
  • the outermost surface of the hard coating layer of the rake face is composed mainly of an Al 2 O 3 layer (the hard coating of the rake face).
  • the area ratio of the TiN phase or TiNO phase remaining on the outermost surface of the layer may be 5 area% or less).
  • a mixed phase of TiN phase and Al 2 O 3 phase or TiNO phase A mixed phase with the Al 2 O 3 phase can be configured as the outermost surface of the hard coating layer.
  • a smooth mixed phase of TiN phase and Al 2 O 3 phase or a mixed phase of TiNO phase and Al 2 O 3 phase is formed, so that the surface smoothness of the work material is obtained. It is possible to easily determine whether the corner is a used corner or an unused corner from the change in color tone of these mixed phases.
  • the surface smoothness of the Al 2 O 3 layer can be improved, thereby improving the welding resistance. Furthermore, since residual stress can be reduced, chipping resistance and chipping resistance can be improved.
  • corner discrimination is enhanced by the mixed phase of TiN phase and Al 2 O 3 phase formed by blasting treatment or the mixed phase of TiNO phase and Al 2 O 3 phase, Compared to the case where the TiN layer or TiNO layer is present on the flank as it is, the surface smoothness of the flank can be improved by removing the TiN layer or the TiNO layer by blasting, whereby the work material Surface smoothness can be improved.
  • the coated tool of the present invention has a rake face excellent in welding resistance and chipping resistance, and a flank face is excellent in surface smoothness and corner identification of the work material. In addition to exhibiting excellent cutting performance, it is possible to easily and reliably discriminate between used corners and unused corners by changing the color tone of the corners when switching the corners of the insert.
  • the present invention has been made based on the above findings, “(1) In a surface-coated cutting tool in which a hard coating layer including at least a lower layer and an upper layer is formed on the surface of a tool base made of a WC-based cemented carbide or a TiCN-based cermet, (A) The lower layer of the hard coating layer is composed of one or more of a TiC layer, a TiN layer, a TiCN layer, a TiCO layer, and a TiCNO layer, (B) The rake face of the surface-coated cutting tool is formed with a hard coating layer composed of the lower layer and an upper Al 2 O 3 layer provided on the surface of the lower layer.
  • the surface roughness Ra is 0.25 ⁇ m or less
  • C On the flank of the surface-coated cutting tool, a hard coating layer composed of the lower layer and an upper Al 2 O 3 layer provided on the surface of the lower layer is formed, and the flank In the surface, a mixed phase of TiN phase and Al 2 O 3 phase or a mixed phase of TiNO phase and Al 2 O 3 phase is formed on the outermost surface of the Al 2 O 3 layer.
  • the surface-coated cutting tool wherein the surface roughness Ra is 0.30 ⁇ m or less.
  • (2) The surface-coated cutting tool according to (1), wherein the area ratio of the TiN phase or the TiNO phase in the mixed phase is 20 to 80 area%. Surface coated cutting tool.
  • a TiN phase or TiNO phase of 5 area% or less is formed on the outermost surface of the Al 2 O 3 layer, which is the upper layer of the rake face.
  • at least one TiCN layer is formed as the lower layer, and the rake face TiCN layer has a tensile strength of 50 to 350 MPa.
  • the flank TiCN layer has a tensile residual stress of 400 to 600 MPa, and the rake face Al 2 O 3 layer has a tensile residual stress of 10 to 300 MPa, and the flank TiCN layer has a residual stress.
  • the surface-coated cutting tool according to any one of (1) to (3), wherein the Al 2 O 3 layer has a tensile residual stress of 350 to 600 MPa. " It has the characteristics.
  • the lower layer made of the Ti compound layer is basically provided below the upper layer made of the Al 2 O 3 layer, and firmly adheres to both the tool base and the upper layer, and the hard coating layer is attached to the tool base. Although it has the effect
  • suitable film types for such a lower layer include one or two or more Ti compound layers of TiC layer, TiN layer, TiCN layer, TiCO layer and TiCNO layer.
  • the lower layer is composed of one or more of them.
  • the average layer thickness of the lower layer is not particularly limited.
  • the average thickness of the lower layer is preferably 3 to 20 ⁇ m.
  • the upper layer composed of the Al 2 O 3 layer improves the wear resistance of the coated tool due to its hardness, heat resistance, and oxidation resistance.
  • the layer thickness of the upper layer is not particularly limited, but if the average layer thickness of the Al 2 O 3 layer is less than 1 ⁇ m, excellent wear resistance cannot be exhibited over a long period of use. When the average layer thickness exceeds 15 ⁇ m, abnormal damage such as chipping, chipping and peeling is likely to occur. Therefore, the average layer thickness of the upper layer made of the Al 2 O 3 layer is preferably 1 to 15 ⁇ m.
  • Hard coating layer on rake face The structure of the hard coating layer of the present coated tool differs between the rake face and the flank face. First, the hard coating layer on the rake face will be described. Hard coating layer formed on the rake face, a lower layer comprising a Ti compound layer, is composed of an upper layer of Al 2 O 3 layer, the outermost surface of the Al 2 O 3 layer, 5 area% or less The presence of TiN phase or TiNO phase is allowed. That is, according to an example of the method for manufacturing the coated tool of the present invention described later, first, a Ti compound layer as a lower layer is formed on the rake face and flank face of the tool base, and then Al as an upper layer is formed on the surface of the lower layer.
  • a TiN layer or a TiNO layer is further formed on the surface of the upper layer.
  • the surface smoothness of the Al 2 O 3 layer of the rake face is increased, and at the same time, the residual Blasting is performed to reduce the stress, and the TiN layer or TiNO layer on the Al 2 O 3 layer is completely removed. Even if not completely removed, the TiN layer or the TiNO layer is adjusted so that the remaining area ratio of the TiN phase or the TiNO phase remaining on the outermost surface of the rake face Al 2 O 3 layer is 5% by area or less. Remove.
  • the remaining amount of TiN phase or TiNO phase on the outermost surface of the rake face Al 2 O 3 layer is 5 area% or less in terms of area ratio, the hardness and heat resistance of the Al 2 O 3 layer as the upper layer of the rake face The surface smoothness and residual stress are not adversely affected, so that the TiN phase or TiNO phase has 5 areas on the outermost surface of the Al 2 O 3 layer. It is permissible to remain below%.
  • the surface roughness Ra of the rake face is set to 0.25 ⁇ m or less.
  • the residual stress in the Al 2 O 3 layer is relaxed by blasting, the value of the tensile residual stress is set to 10 to 300 MPa, and the tensile residual stress in the TiCN layer that is a constituent layer of the lower layer is set to 50 to 350 MPa.
  • chipping resistance, chipping resistance, and peeling resistance as the entire hard coating layer are improved. That is, the outermost TiN layer and TiNO layer of the rake face Al 2 O 3 layer are removed by blasting (including removal of the remaining area ratio of the TiN phase or TiNO phase of 5 area% or less), and the rake face is removed.
  • Hard cover layer on the flank Hard coating layer formed on the flank, and a lower layer comprising a Ti compound layer, Al 2 O 3 layer and an upper layer made of, Al 2 O 3 layer TiN phase formed on the outermost surface of the Al 2 O 3 It consists of a mixed phase with a phase or a mixed phase of a TiNO phase and an Al 2 O 3 phase.
  • the surface roughness Ra of the flank is 0.30 ⁇ m or less, which is composed of a mixed phase with a phase or a mixed phase of a TiNO phase and an Al 2 O 3 phase.
  • the surface roughness Ra of the flank on the flank is determined to be 0.3 ⁇ m or less, and the Al 2 O 3 layer
  • the area ratio of TiN phase or TiNO phase in the mixed phase of TiN phase and Al 2 O 3 phase formed on the outermost surface or the mixed phase of TiNO phase and Al 2 O 3 phase is 20 to 80 area%. It is desirable.
  • the tensile residual stress of the Al 2 O 3 layer formed on the flank face is reduced to 350 to 600 MPa by blasting, and the tensile residual stress in the TiCN layer which is a constituent layer of the lower layer is reduced to 400 to 600 MPa. By reducing the thickness, abnormal wear due to chipping, peeling or the like can be suppressed.
  • the area ratio of the mixed phase or the mixed phase of the TiNO phase and the Al 2 O 3 phase refers to each area ratio measured by performing EDS analysis on each of the rake face and the flank face.
  • surface roughness Ra can be measured using a stylus type surface roughness measuring instrument based on JIS B0601'01, for example, In this case, cut-off value: 0.08 mm, reference
  • the residual stress of the Al 2 O 3 layer in the upper layer and the residual stress of the TiCN layer that is the constituent layer of the lower layer are measured using, for example, a sin 2 ⁇ method and an X-ray diffractometer using Cu ⁇ . .
  • ⁇ -Al 2 O 3 uses a diffraction peak of (13_10) plane
  • Young's modulus is 384 GPa
  • Poisson's ratio is 0.232
  • TiCN uses a diffraction peak of (422) plane
  • Young's modulus is 480 GPa.
  • the calculation is performed using a Poisson's ratio of 0.2.
  • the hard coating layer of the present invention can be produced, for example, by the following method. First, a Ti compound layer as a lower layer and an Al 2 O 3 layer as an upper layer are formed with a predetermined average layer thickness on the tool base surface by a normal chemical vapor deposition method, Next, on the surface of the upper Al 2 O 3 layer, a color-determined TiN layer or TiNO layer having a corner identification function is formed by an ordinary chemical vapor deposition method so that the average layer thickness is about 0.1 to 1 ⁇ m. To form.
  • the TiNO layer is formed by the diffusion reaction of oxygen from the TiOx layer to the TiN layer by first forming the TiOx layer and then depositing the TiN layer on the TiOx layer under normal conditions.
  • Blast processing Speaking of more specific conditions for blasting, for example, Blasting solution: Abrasive grains + water, Abrasive: Al 2 O 3 powder, Abrasive grain size: 150-500 (mesh), Abrasive grain concentration: 15-60 mass%, Blasting pressure: 0.06-0.24MPa Projection time: 3-20 seconds, blasting is applied to the rake face and flank face. Especially, by adjusting the blast pressure and projection time, the surface roughness Ra of the rake face and flank face, and the lower part The residual stress of the TiCN layer of the layer and the Al 2 O 3 layer of the upper layer are adjusted.
  • the blasting liquid may be projected onto both the rake face and the flank face by adjusting the projection angle.
  • a mixed phase of TiN phase and Al 2 O 3 phase or a mixed phase of TiNO phase and Al 2 O 3 phase is present on the outermost surface of the Al 2 O 3 layer on the flank near the cutting edge ridge line. It is formed, and whether the corner is used or not is determined by the color tone. At the same time, the surface smoothness of the flank in the vicinity of the cutting edge ridge is increased, the surface smoothness of the work material is improved, and the residual stress of the TiCN layer and Al 2 O 3 layer in the flank near the cutting edge ridge is increased. By mitigating, it is possible to suppress the occurrence of abnormal wear due to improved chipping resistance and peel resistance on the flank side.
  • the rake face is excellent in welding resistance and chipping resistance
  • the flank face including the cutting edge ridge line is excellent in surface smoothness and corner identification of the work material and abnormal wear.
  • the coated tool of the present invention will be specifically described with reference to examples.
  • an example is shown in which a WC-based cemented carbide is used as the tool base, but the same applies when a TiCN-based cermet is used as the tool base.
  • WC powder, TiC powder, TiN powder, TaC powder, NbC powder, Cr 3 C 2 powder and Co powder each having an average particle diameter of 1 to 3 ⁇ m were prepared. After blending to the composition shown, adding wax, ball mill mixing in acetone for 24 hours, drying under reduced pressure, press-molding into a green compact of a predetermined shape at a pressure of 98 MPa, this green compact in a vacuum of 5 Pa, Inserts specified in ISO / CNMG120408 by vacuum sintering at a predetermined temperature within the range of 1370 to 1470 ° C. for 1 hour, sintering, and then performing a honing process of R: 0.05 mm on the cutting edge. Tool bases A to C made of WC-base cemented carbide having a shape were manufactured.
  • Table 2 (l-TiCN in Table 2 indicates the conditions for forming a TiCN layer having a vertically grown crystal structure described in JP-A-6-8010, and other than that, a normal granular crystal structure is shown.
  • the Ti compound layer having the target layer thickness shown in Table 3 was formed as a lower layer of the hard coating layer under the conditions shown in FIG.
  • an Al 2 O 3 layer having a target layer thickness shown in Table 3 is formed by vapor deposition on the surface of the lower layer under the conditions shown in Table 2. Further, under the same conditions shown in Table 2, the Al 2 O 3 the TiN layer or TiNO layer of the target layer thicknesses shown in Table 3 was vapor deposited in three layers on.
  • the area of the TiN phase or TiNO phase existing (residual) on the surface of the Al 2 O 3 layer of the rake face by performing EDS analysis on the outermost surface of the Al 2 O 3 layer of the coated tools 1 to 6 of the present invention. Further, the area ratio of the TiN phase or the TiNO phase constituting the mixed phase on the outermost surface of the Al 2 O 3 layer on the flank face was measured. Table 5 shows the measured area ratio of the TiN phase or the TiNO phase.
  • the surface roughness Ra of the rake face and the flank face was measured for the inventive coated tools 1 to 6 produced as described above.
  • the surface roughness Ra is measured in accordance with JIS B0601'01, with a cut-off value of 0.08 mm, a reference length of 0.8 mm, and a scanning speed of 0.1 mm / sec. It measured using the measuring device. Table 5 shows the results.
  • the residual stress was measured for the Al 2 O 3 layer and the TiCN layer.
  • the residual stress was measured using a sin 2 ⁇ method and an X-ray diffractometer using Cu ⁇ .
  • ⁇ -Al 2 O 3 uses a diffraction peak of (13_10) plane
  • Young's modulus is 384 GPa
  • Poisson's ratio is 0.232
  • TiCN uses a diffraction peak of (422) plane
  • Young's modulus is 480 GPa.
  • Table 5 shows the results.
  • a Ti compound layer having the target layer thickness shown in Table 6 was applied to the hard coating layer under the conditions shown in Table 2 for the tool bases A to C made of the WC-base cemented carbide prepared above. After vapor-depositing as the lower layer, an Al 2 O 3 layer having the target layer thickness shown in Table 6 is vapor-deposited on the surface of the lower layer under the conditions shown in Table 2, and the conditions shown in Table 2 are also given. Then, a TiN layer or a TiNO layer having a target layer thickness shown in Table 6 was formed on the Al 2 O 3 layer by vapor deposition.
  • the TiN phase or TiNO phase existing (residual) on the outermost surface of the rake face Al 2 O 3 layer was measured.
  • Table 8 shows the measured area ratio of the TiN phase or TiNO phase.
  • the surface roughness Ra of the rake face and the flank face was measured by the same method as the coated tools 1 to 6 of the present invention, and the Al 2 O 3 layer and The residual stress of the TiCN layer was measured. Table 8 shows the results.
  • the following cutting conditions A and cutting are performed in a state where each of the tool steel cutting tools is screwed with a fixing jig.
  • a cutting test was performed under Condition B.
  • ⁇ Cutting condition A Work material: JIS / S45C round bar, Cutting speed: 250 m / min, Cutting depth: 1.5 mm, Feed: 0.2 mm / rev, Cutting time: Dry cutting test of carbon steel under the condition of 20 minutes.
  • ⁇ Cutting condition B Work material: JIS / SCM440 round bar, Cutting speed: 350 m / min, Cutting depth: 1.5 mm, Feed: 0.5 mm / rev, Cutting time: Dry high-speed high-feed cutting test of alloy steel under conditions of 10 minutes.
  • the flank maximum wear width of the cutting edge was measured, and at the same time, the presence or absence of welding, the presence or absence of chipping, and the presence or absence of defects were observed, and the quality of the used corners was further observed. Further, after cutting, the finished surface accuracy (arithmetic average height (Ra ⁇ m) according to JIS B0601-2001) of the work material was measured. Tables 9 and 10 show the cutting test results.
  • the coated tool of the present invention can improve the surface smoothness of both the rake face and the flank face. As a result, the welding resistance and the surface smoothness of the work material can be improved. The improvement of the property is achieved.
  • a mixed phase of TiN phase and Al 2 O 3 phase or a mixed phase of TiNO phase and Al 2 O 3 phase is formed on the flank outermost surface. It is easy to distinguish unused corners and has excellent corner identification. Further, in the high-feed cutting, the Al 2 O 3 layer on the rake face, TiCN layer and the Al 2 O 3 layer of flank and TiCN layer, since the relaxation of residual stresses is achieved by blasting, due to the occurrence of abnormal wear Damage can be suppressed.
  • the comparative coated tool even if it has excellent welding resistance, chipping resistance and chipping resistance, it is inferior in corner identification, and if it has excellent corner identification, The surface smoothness and abnormal wear resistance of the cutting material are inferior, and none of the corner discrimination and cutting performance are compatible.
  • the coated tool of the present invention has excellent cutting performance and corner identification, it is possible to reduce the cost and increase the work by improving the performance of the cutting device, saving the cutting work, and saving energy. It is possible to realize sex.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Chemical Vapour Deposition (AREA)

Abstract

L'invention concerne un outil de coupe à revêtement de surface, lequel outil a une excellente résistance à la déposition, une excellente résistance à l'écaillage, et une excellente résistance aux défauts, et lequel a une aptitude à la reconnaissance de coin. L'outil de coupe à revêtement de surface selon la présente invention a une couche de revêtement dure comprenant au moins une couche inférieure et une couche supérieure, formée sur la surface d'une base d'outil, la couche inférieure comprenant une couche de composé de Ti; une couche de revêtement dure comprenant une couche inférieure et une couche d'Al2O3 disposée sur la surface de la couche inférieure étant formée sur une face de coupe de l'outil de coupe à revêtement de surface; la face de coupe ayant une rugosité de surface Ra d'au plus 0,25 μm; une couche de revêtement dure comprenant la couche inférieure et la couche d'Al 2O3 étant formée sur une face de flanc de l'outil de coupe à revêtement de surface; dans la face de flanc, une phase mixte de phase de TiN et de phase d'Al2O3 ou une phase mixte de phase de TiNO et de phase d'Al2O3 étant formée sur la surface située le plus à l'extérieur de la couche d'Al2O3; la surface de la phase de TiN ou de la phase de TiNO représentant 20 à 80 % en surface sur la phase mixte; et la face de flanc ayant une rugosité de surface Ra d'au plus 0,30 μm.
PCT/JP2016/059356 2015-12-25 2016-03-24 Outil de coupe à revêtement de surface Ceased WO2017110103A1 (fr)

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Citations (5)

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