CN102626795A - Surface covering cutting tool of rigid covering layer - Google Patents
Surface covering cutting tool of rigid covering layer Download PDFInfo
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- CN102626795A CN102626795A CN2012100069135A CN201210006913A CN102626795A CN 102626795 A CN102626795 A CN 102626795A CN 2012100069135 A CN2012100069135 A CN 2012100069135A CN 201210006913 A CN201210006913 A CN 201210006913A CN 102626795 A CN102626795 A CN 102626795A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 30
- 238000009826 distribution Methods 0.000 claims abstract description 43
- 230000002902 bimodal effect Effects 0.000 claims abstract description 14
- 150000001875 compounds Chemical class 0.000 claims abstract description 11
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 3
- 239000000956 alloy Substances 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 114
- 239000011247 coating layer Substances 0.000 claims description 26
- 239000010936 titanium Substances 0.000 claims description 17
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- PIZYHTQSHRQOBI-UHFFFAOYSA-N [C].O=[N] Chemical compound [C].O=[N] PIZYHTQSHRQOBI-UHFFFAOYSA-N 0.000 claims description 4
- 150000004767 nitrides Chemical class 0.000 claims description 4
- 241000446313 Lamella Species 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 3
- 239000011148 porous material Substances 0.000 abstract description 7
- 239000000919 ceramic Substances 0.000 abstract description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 1
- 238000010025 steaming Methods 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 21
- 239000011248 coating agent Substances 0.000 description 17
- 238000000576 coating method Methods 0.000 description 17
- 230000015572 biosynthetic process Effects 0.000 description 9
- 238000005530 etching Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000007774 longterm Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000007740 vapor deposition Methods 0.000 description 7
- 229910001018 Cast iron Inorganic materials 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000005229 chemical vapour deposition Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 230000008676 import Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Cutting Tools, Boring Holders, And Turrets (AREA)
- Chemical Vapour Deposition (AREA)
Abstract
The invention provides a surface covering cutting tool having excellent anti-blade-breaking performance and good anti-damage performance in cutting rigid covering layer in high speed interrupted cut. The surface covering cutting tool is provided with a rigid covering layer formed by steaming on the surface of a tool substrate containing WC rigid alloy and TiCN base metallic ceramics. The rigid covering layer includes (a) a lower part layer containing Ti compound layer and (b) an upper part layer containing aluminum oxide layer. The upper part layer is distributed with micro holes having pore diameter of 2 to 50 nm and the pore size distribution of micro holes are arranged in a bimodal distribution.
Description
Technical field
The present invention relates to a kind of surface-coated cutting tool (below be called the coating instrument); It is in that hot generation and intermittence or impact load act in the high speed interrupted cut processing of various steel or the cast iron of cutting edge with height; Because hard coating layer possesses excellent anti-cutter property, the anti-damaged property of collapsing, therefore through the long-term excellent cutting ability of performance of using.
Background technology
Usually the known in the past surface at the matrix that is made up of tungsten carbide (following represent with WC) base cemented carbide or titanium carbonitride (following represent with TiCN) based ceramic metal (following these are referred to as tool base) forms by following (a) and (b) the coating instrument that forms of the hard coating layer of formation:
(a) lower layer; It is the Ti compound layer more than 1 layer or 2 layers in the carbide that comprises all the Ti that is formed by chemical vapor deposition (following represent with TiC) layer, nitride (following represent with TiN equally) layer, carbonitride (following represent with TiCN) layer, oxycarbide (following represent with TiCO) layer and carbon nitrogen oxide (following represent with the TiCNO) layer
(b) upper layer, its aluminium oxide that forms for chemical vapor deposition (below use Al
2O
3Expression) layer, and known should being used in the cut of various steel or cast iron etc. by the coating instrument.
But said coating instrument exists in machining condition that bigger load puts on cutting edge and is prone to down produce and collapses short and so on the problem of cutter, damaged etc. and life tools, therefore in order to eliminate this problem, has carried out various motions all the time.
For example, carried out following motion in the patent documentation 1:, be provided with and use the TiCN film to carry out that the surface is strengthened and hole rate is 5～30% porous matter Al as hard coating layer
2O
3Film absorbs thus and relaxes thermal shock and mechanicalness impact as upper layer, thereby improves the anti-cutter property that collapses of coating instrument.
In addition, carried out following motion in the patent documentation 2:, hole rate is set is 5～30% porous matter Al as hard coating layer
2O
3Film is provided with the TiN film above that as superficial layer as upper layer, absorbs thus to relax thermal shock and mechanicalness impact, thereby improves the anti-cutter property that collapses of coating instrument.
Patent documentation 1: the open 2003-48105 communique of Japan Patent
Patent documentation 2: the open 2003-19603 communique of Japan Patent
Present situation is as follows in recent years: the requirement to saving labourization in the cut and energy-conservationization is strong; With this; The coating instrument uses under exacting terms more gradually, for example, even in said patent documentation 1, the coating instrument shown in 2; Be used in the high speed interrupted cut that further acts on cutting edge with the hot generation of height and intermittence or impact load and add man-hour; Because anti-mechanical impact property, the resistance to sudden heating of upper layer are insufficient, so producing easily, the high load capacity also can be because of cut the time collapses cutter, damaged on cutting edge, it reaches service life as a result within a short period of time.
Summary of the invention
Therefore; The inventor etc. from as aforementioned viewpoint; Even to adding man-hour also because hard coating layer possesses excellent impact absorbency and furthers investigate through the long-term excellent anti-coating instrument that collapses cutter property, anti-damaged property of performance that uses being used in the high speed interrupted cut that acts on cutting edge with the hot generation of height and intermittence or impact load, the result has obtained following opinion.
That is, as hard coating layer, at said formation porous matter Al in the past
2O
3In the upper layer of layer, at whole Al
2O
3Be formed with the roughly small hole of uniform pore size in the layer, therefore, the high more then anti-mechanical impact property of hole rate, resistance to sudden heating improve more, but the opposite high more then porous of hole rate matter Al
2O
3The elevated temperature strength of layer, high temperature hardness descend more, therefore can't can not say so gratifying life tools in addition through long-term use performance sufficient abrasion resistance.
Therefore, inventor waits and to have found following content: by the lower layer that comprises the Ti compound layer with comprise Al
2O
3The upper layer of layer constitutes hard coating layer, and upper layer has the small hole that the aperture is 2～50nm, and the pore-size distribution in this small hole is bimodal distribution, thereby can not cause Al
2O
3The elevated temperature strength of layer and the decline of high temperature hardness can improve anti-mechanical impact property, resistance to sudden heating.
In addition, found as bimodal distribution more effectively when the following situation, promptly the 1st peak of the pore-size distribution in small hole is present among 2～10nm, and hole count density is 200～500/μ m when calculating the hole by the 2nm aperture
2, the 2nd peak is present among 20～50nm, and hole count density is 10～50/μ m when calculating the hole by the 2nm aperture
2
Obtain the reason of excellent effect as be made as bimodal distribution through pore-size distribution with small hole; Can consider following reason; The small hole that is larger aperture absorbs mitigation thermal shock and mechanicalness impact, and improves anti-damaged property, the anti-cutter property that collapses, and the small hole of smaller aperture due suppresses Al
2O
3The thermal conductivity of film, and improve the heat shielding effect.
And the small hole that possesses said pore-size distribution for example can be through following chemical vapor deposition method film forming.
(a) vapor deposition forms the lower layer of the common target thickness that comprises the Ti compound layer on tool base surface,
(b) then, utilize AlCl
3-CO
2-HCl-H
2S-H
2As reacting gas, form Al through the chemical vapor deposition method
2O
3The layer as upper layer,
(c) after the film forming procedure of said (b), stop to import above-mentioned reacting gas, be that the A condition (afterwards stating) in the small hole of 2～10nm imports SF down simultaneously in main generation aperture
6Be that gas carries out SF
6Etching,
(d) then, carry out said (b) operation once more,
(e) after the film forming procedure of said (d), stop to import above-mentioned reacting gas, be that the B condition (afterwards stating) in the small hole of 20～50nm imports SF down simultaneously in main generation aperture
6Be that gas carries out SF
6Etching,
(f) then, carry out said (b) operation once more,
(g) through carrying out said (c)～(f) operation repeatedly, at the Al of upper layer
2O
3Form small hole in the layer with bimodal pore size distribution.
Through above-mentioned (a)～(g), comprise the lower layer of target bed thickness and the hard coating layer of upper layer in the formation of tool base surface, but, then can confirm Al if with scanning electron microscope said hard coating layer being carried out section structure observes
2O
3Forming the aperture in the layer is the small hole of 2～50nm, and the pore-size distribution in small hole is following bimodal distribution, and promptly the 1st peak is present among 2～10nm, and hole count density is 200～500/μ m when calculating the hole by the 2nm aperture
2, the 2nd peak is present among 20～50nm, and hole count density is 10～50/μ m when calculating the hole by the 2nm aperture
2
And find; Even in the upper layer of hard coating layer, being formed with the coating instrument of the present invention that aforesaid pore-size distribution is the small hole of bimodal distribution is being used in the hot generation of height and intermittence or impact load acts on the steel of cutting edge or the high speed interrupted cut of cast iron adds man-hour; Anti-cutter property, the anti-damaged property of collapsing of hard coating layer is also excellent, can bring into play excellent abrasive through long-term use.
The present invention is based on above-mentioned opinion and accomplishes, and it has following characteristic.
(1) a kind of surface-coated cutting tool is provided with hard coating layer on the surface of the tool base that is made up of tungsten carbide base carbide alloy or base titanium carbonitride, wherein,
Said hard coating layer comprises lower layer and upper layer,
(a) said lower layer, be in carbide lamella, nitride layer, carbonitride layer, oxycarbide layer and the carbon nitrogen oxide layer that comprises Ti more than 1 layer or 2 layers and have a Ti compound layer of the average bed thickness of total of 3～20 μ m,
(b) said upper layer is the alumina layer of average bed thickness with 1～25 μ m,
Said upper layer has the small hole that the aperture is 2～50nm, and the pore-size distribution in this small hole is bimodal distribution.
(2) like (1) described surface-coated cutting tool, wherein,
The 1st peak of the pore-size distribution in said small hole is present among 2～10nm, and hole count density is 200～500/μ m when calculating the hole by the 2nm aperture
2,
The 2nd peak of the pore-size distribution in said small hole is present among 20～50nm, and hole count density is 10～50/μ m when calculating the hole by the 2nm aperture
2
Below the present invention is elaborated.
The Ti compound layer of lower layer:
The lower layer that comprises the Ti compound layer more than 1 layer or 2 layers in carbide lamella, nitride layer, carbonitride layer, oxycarbide layer and the carbon nitrogen oxide layer of Ti can form under common chemical vapor deposition condition; Itself has elevated temperature strength; The existence of this lower layer not only makes hard coating layer possess elevated temperature strength, and owing to all adheres to tool base securely and comprise Al
2O
3The layer upper layer and have the adhering effect that helps to improve the relative tool base of hard coating layer; But, when it adds up to average bed thickness less than 3 μ m, can't give full play to said effect; On the other hand; If it adds up to average bed thickness to surpass 20 μ m, then be easy to generate and collapse cutter, therefore add up to average bed thickness to be decided to be 3～20 μ m it.
The Al of upper layer
2O
3Layer:
The Al of known formation upper layer
2O
3Layer possesses high temperature hardness and hear resistance, but its average bed thickness can't be guaranteed the wearability in long-term the use during less than 1 μ m, on the other hand, if its average bed thickness surpasses 25 μ m, then Al
2O
3Easy thickization of crystal grain, therefore its result is decided to be 1～25 μ m with its average bed thickness except reducing high temperature hardness, the elevated temperature strength, also reducing anti-cutter property, the anti-damaged property of collapsing that the high speed interrupted cut adds man-hour.
Be formed at the small hole of upper layer:
Of the present invention by Al
2O
3Even layer constitutes and the aperture be 2～50nm small hole with the upper layer of preset aperture distribution dispersed and distributed cutting edge be exposed to high temperature and receive mechanicalness impact or the high speed interrupted cut processing of thermal shock in also possess excellent elevated temperature strength, high temperature hardness, excellent anti-cutter property, the anti-damaged property of collapsing of performance simultaneously.
Pore-size distribution is the formation in the small hole of bimodal distribution:
Small hole of the present invention can be through implementing to form based on the etching of following 2 conditions in the process that forms with the upper layer of common chemical vapor deposition condition film forming.
The importing of the reacting gas of using through the upper layer film forming that hockets and based on the etching of following 2 conditions forms the small hole with the pore-size distribution that is bimodal distribution in upper layer.
(A condition)
Form (capacity %) at reacting gas:
SF
6：5～10％、
H
2: residue;
Reaction atmosphere temperature: 800～950 ℃;
Reaction atmosphere pressure: 4～9kPa
Condition under, carry out 7～40 minutes SF
6Etching.
(B condition)
Form (capacity %) at reacting gas:
SF
6：5～10％、
H
2: residue;
Reaction atmosphere temperature: 1000～1050 ℃;
Reaction atmosphere pressure: 13～27kPa
Condition under, carry out 5～40 minutes SF
6Etching.
The pore-size distribution form in small hole:
Expression is formed at the graph of pore diameter distribution in the small hole in the upper layer of the present invention that under said etching condition, forms among Fig. 1.
As shown in Figure 1, having the aperture in the upper layer of the present invention is the small hole of 2～50nm, but its pore-size distribution is the bimodal distribution of following form, and promptly the 1st peak is present among 2～10nm, and hole count density is 200～500/μ m when calculating the hole by the 2nm aperture
2, in addition, the 2nd peak is present among 20～50nm, and hole count density is 10～50/μ m when calculating the hole by the 2nm aperture
2
Among the present invention, in the pore-size distribution in small hole, be that the 1st peak in the less small hole of 2～10nm fixes on 200～500/μ m with diameter
2Scope in be because, if diameter is that the 1st peak in the pore-size distribution in less small hole of 2～10nm is less than 200/μ m
2, then can't give full play to and suppress Al
2O
3The effect of the thermal conductivity of film, raising heat shielding effect and so on, on the other hand, if surpass 500/μ m
2, then porosity becomes too high, upper layer embrittlement and wearability takes place reduce.
In addition, in the pore-size distribution in small hole, be that the 2nd peak in the bigger small hole of 20～50nm fixes on 10～50/μ m with diameter
2Scope in be because, at 10/μ m
2Below or surpass 50/μ m
2Scope, can't give full play to and absorb relax the effect that thermal shock or mechanicalness are impacted and so on, and can't give full play to and improve the anti-effect that collapses cutter property, anti-damaged property and so on.
In addition, among the present invention, with the aperture in small hole be decided to be 2～50nm be because; Buffering effect can't be expected, on the other hand during less than 2nm in the aperture that is formed at the hole in the upper layer; If the aperture surpasses 50nm, then the toughness of upper layer reduces greatly, in the time of for the elevated temperature strength of keeping upper layer, high temperature hardness; Maintenance is for the buffering effect of intermittence or impact load, and the aperture that is formed at the small hole of upper layer is necessary for 2～50nm.
In the coating instrument of the present invention,, coat formation and comprise the lower layer of Ti compound layer and comprise Al as hard coating layer
2O
3The upper layer of layer; And, have the small hole that pore-size distribution is bimodal distribution in the upper layer, even add man-hour in the high speed interrupted cut that acts on cutting edge with the hot generation of height and intermittence or impact high load capacity that is used in steel or cast iron etc. thus; Anti-cutter property, the anti-damaged property of collapsing is also excellent; Its result through the long-term performance excellent abrasive of using, realizes the long lifetime of coating instrument.
Description of drawings
Fig. 1 representes to be formed at the graph of pore diameter distribution in the small hole in the upper layer that the present invention coats instrument.
The specific embodiment
Then, specify coating instrument of the present invention based on embodiment.
[embodiment]
WC powder, TiC powder, ZrC powder, VC powder, TaC powder, NbC powder, Cr that preparation all has 1～3 μ m average grain diameter
3C
2Powder, TiN powder, TaN powder and Co powder are as material powder; These material powders are fitted in the cooperation shown in the table 1 form, and, add wax ball mill mixing 24 hours in acetone; Behind the drying under reduced pressure; Pressure punch forming with 98MPa is the pressed compact of regulation shape, with this pressed compact in the vacuum of 5Pa and vacuum-sintering keep 1 hour condition with the set point of temperature in 1370～1470 ℃ of scopes under, behind the sintering; The cutting blade is implemented the cutting edge reconditioning of R:0.07mm and processed, produce WC base cemented carbide system tool base A～E thus respectively with blade shapes of stipulating among the iso standard CNMG120408.
In addition, prepare all to have TiCN (being TiC/TiN=50/50 by quality ratio) powder, the Mo of 0.5～2 μ m average grain diameter
2C powder, ZrC powder, NbC powder, TaC powder, WC powder, Co powder and Ni powder are as material powder; These material powders are fitted in the cooperation shown in the table 2 to be formed; After ball mill wet mixed 24 hours and drying; Pressure punch forming with 98MPa is a pressed compact, with this pressed compact in the blanket of nitrogen of 1.3kPa and with temperature: 1540 ℃ keep sintering under 1 hour the condition, behind the sintering; Cutting edge is partly implemented the cutting edge reconditioning of R:0.07mm and processed, formed the TiCN based ceramic metal system tool base a～e of blade shapes thus with iso standard CNMG120408.
Secondly, utilize common chemical evaporation plating device,, carry out following operation on the surface of these tool base A～E and tool base a～e.
(a) form the lower layer of Ti compound layer with the target bed thickness vapor deposition shown in condition shown in the table 3 and the table 5 as hard coating layer.
(b) then, form Al with the condition vapor deposition shown in the table 3
2O
3Layer is as the upper layer of hard coating layer.
(c) then, stop the Al of film forming (b)
2O
3Layer carries out the SF based on the A condition shown in the table 4 of stipulated time
6The film formation process of (b) is carried out in etching in addition once more, carries out the SF based on the B condition shown in the table 4 of stipulated time after stopping once more
6The film formation process of (b) is carried out in etching in addition once more.
(d) carry out said (c) operation repeatedly, and vapor deposition forms the Al of the target bed thickness shown in the table 5
2O
3Layer.
According to above-mentioned (a)～(d), vapor deposition forms and to comprise the lower layer shown in the table 5 and to be distributed with the upper layer (Al that the pore-size distribution shown in the table 6 is the target bed thickness shown in the table 5 in small hole of bimodal distribution
2O
3Layer) hard coating layer produces the present invention thus and coats instrument 1～15.
Utilize scanning electron microscope (multiplying power is 50000 times) that said the present invention is coated the many visuals field of the upper layer of instrument 1～15 and observe, results verification the pore-size distribution form shown in the graph of pore diameter distribution shown in Figure 1.
In addition; As purpose relatively, coat instrument 1～15 with the present invention and form Ti compound layer with the condition shown in the table 3 and with the target bed thickness shown in the table 5 at the surperficial vapor deposition of tool base A～E and tool base a～e identically as the lower layer of hard coating layer.
Then, comprise Al with the condition shown in the table 3 and with the formation of the target bed thickness vapor deposition shown in the table 5
2O
3The upper layer of layer has been made the relatively coating instrument 1～15 of table 5 thus as the upper layer of hard coating layer.
In addition, utilize scanning electron microscope to measure the bed thickness that the present invention coats instrument 1～15 and relatively coats each structure sheaf of instrument 1～15, the result all demonstrated in fact identical with the target bed thickness shown in the table 5 average bed thickness.
[table 1]
[table 2]
[table 4]
[table 5]
[table 6]
Then, coat instrument 1～15 and relatively coat instrument 1～15, under the condition shown in the table 7, implement the cut test, in all cutting tests, all measured the wear of the tool flank width of cutting edge about said the present invention.
In the result of its mensuration table 8 illustrate.
[table 7]
(notes) workpiece is along its length uniformly-spaced to have the pole of 4 pods
[table 8]
(the cutting test result who relatively coats toolbar representes to reach cutting time till the life-span (minute)) because of collapsing cutter, reason such as damaged
Clearly can know from the result shown in table 5～8; Coating instrument of the present invention is owing to the upper layer of hard coating layer has the pore-size distribution of regulation and is dispersed with small hole; Even add man-hour in the high speed interrupted cut that acts on cutting edge with the hot generation of height and intermittence or impact high load capacity that is used in steel or cast iron etc. thus; Anti-cutter property, the anti-damaged property of collapsing is also excellent, and its result is through the long-term performance excellent abrasive of using.
With respect to this; Relatively coating instrument 1～15 about the upper layer of hard coating layer has the pore-size distribution of regulation and is not dispersed with small hole clearly can be known; Add man-hour being used in the high speed interrupted cut that acts on cutting edge with the hot generation of height and intermittence or impact high load capacity, because of collapsing cutter, damaged etc. reaching the life-span at short notice.
Utilizability on the industry
As stated; Coating instrument of the present invention for example acts in the high speed interrupted cut processing of cutting edge in the hot generation with height of steel or cast iron etc. and intermittence or impact high load capacity; Anti-cutter property, the anti-damaged property of collapsing that performance is excellent; Can increase the service life, but not only can under high speed interrupted cut processing conditions, use, certainly also can be in the uses down such as high speed heavy cut processing conditions of High Speed Machining condition, high cutting-in amount and high feed speed.
Claims (2)
1. a surface-coated cutting tool is provided with hard coating layer on the surface of the tool base that is made up of tungsten carbide base carbide alloy or base titanium carbonitride, it is characterized in that,
Said hard coating layer comprises lower layer and upper layer,
(a) said lower layer, be in carbide lamella, nitride layer, carbonitride layer, oxycarbide layer and the carbon nitrogen oxide layer that comprises Ti more than 1 layer or 2 layers and have a Ti compound layer of the average bed thickness of total of 3～20 μ m,
(b) said upper layer is the alumina layer of average bed thickness with 1～25 μ m,
Said upper layer has the small hole of aperture 2～50nm, and the pore-size distribution in this small hole is bimodal distribution.
2. surface-coated cutting tool as claimed in claim 1 is characterized in that,
The 1st peak of the pore-size distribution in said small hole is present among 2～10nm, and the hole count density of calculating in Kong Shidi 1 peak by the 2nm aperture is 200～500/μ m
2,
The 2nd peak of the pore-size distribution in said small hole is present among 20～50nm, and the hole count density of calculating in Kong Shidi 2 peaks by the 2nm aperture is 10～50/μ m
2
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-021626 | 2011-02-03 | ||
| JP2011021626A JP5590329B2 (en) | 2011-02-03 | 2011-02-03 | Surface coated cutting tool with excellent chipping resistance and chipping resistance with excellent hard coating layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102626795A true CN102626795A (en) | 2012-08-08 |
| CN102626795B CN102626795B (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210006913.5A Expired - Fee Related CN102626795B (en) | 2011-02-03 | 2012-01-11 | Hard coating layer possesses the resistance to surface-coated cutting tool collapsing cutter, fracture resistance |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5590329B2 (en) |
| CN (1) | CN102626795B (en) |
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| CN104044308A (en) * | 2013-03-12 | 2014-09-17 | 三菱综合材料株式会社 | Coated cutting tool |
| CN105940141A (en) * | 2014-01-30 | 2016-09-14 | 山特维克知识产权股份有限公司 | Alumina coated cutting tool |
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| JP6198141B2 (en) * | 2014-03-26 | 2017-09-20 | 三菱マテリアル株式会社 | Surface coated cutting tool with excellent chipping resistance and chipping resistance with excellent hard coating layer |
| JP6423286B2 (en) * | 2015-02-26 | 2018-11-14 | 三菱マテリアル株式会社 | Surface coated cutting tool with excellent chipping and wear resistance with excellent hard coating layer |
| JP6519952B2 (en) * | 2015-07-30 | 2019-05-29 | 三菱マテリアル株式会社 | Surface coated cutting tool exhibiting excellent chipping resistance with hard coating layer |
| JP6761597B2 (en) * | 2016-09-02 | 2020-09-30 | 三菱マテリアル株式会社 | Surface coating cutting tool with excellent chipping resistance due to the hard coating layer |
| DE112019004453T5 (en) * | 2018-09-05 | 2021-06-02 | Kyocera Corporation | COATED TOOL AND CUTTING TOOL |
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| JP2006231433A (en) * | 2005-02-23 | 2006-09-07 | Mitsubishi Materials Corp | Surface-coated cermet cutting tool with hard coating layer exerting excellent chipping resistance in high-speed intermittent cutting |
| JP2006297517A (en) * | 2005-04-19 | 2006-11-02 | Mitsubishi Materials Corp | Surface coated cermet cutting tool having hard coating layer exhibiting excellent chipping resistance in high-speed intermittent cutting of high hardness steel |
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| CN104044308A (en) * | 2013-03-12 | 2014-09-17 | 三菱综合材料株式会社 | Coated cutting tool |
| CN104044308B (en) * | 2013-03-12 | 2017-08-04 | 三菱综合材料株式会社 | Surface-coated cutting tool |
| CN105940141A (en) * | 2014-01-30 | 2016-09-14 | 山特维克知识产权股份有限公司 | Alumina coated cutting tool |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5590329B2 (en) | 2014-09-17 |
| CN102626795B (en) | 2015-09-02 |
| JP2012161847A (en) | 2012-08-30 |
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