CN101596610A - Be used for fine grain hard alloy that superalloy (HRSA) and stainless steel are carried out turning - Google Patents
Be used for fine grain hard alloy that superalloy (HRSA) and stainless steel are carried out turning Download PDFInfo
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- CN101596610A CN101596610A CNA2008101095431A CN200810109543A CN101596610A CN 101596610 A CN101596610 A CN 101596610A CN A2008101095431 A CNA2008101095431 A CN A2008101095431A CN 200810109543 A CN200810109543 A CN 200810109543A CN 101596610 A CN101596610 A CN 101596610A
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 15
- 239000010935 stainless steel Substances 0.000 title claims abstract description 15
- 229910045601 alloy Inorganic materials 0.000 title claims description 19
- 239000000956 alloy Substances 0.000 title claims description 19
- 229910000601 superalloy Inorganic materials 0.000 title claims description 5
- 238000005520 cutting process Methods 0.000 claims abstract description 65
- 238000000576 coating method Methods 0.000 claims abstract description 54
- 239000011248 coating agent Substances 0.000 claims abstract description 52
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 238000005245 sintering Methods 0.000 claims abstract description 19
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 229910001067 superalloy steel Inorganic materials 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 19
- 229910052804 chromium Inorganic materials 0.000 claims description 11
- 229910000816 inconels 718 Inorganic materials 0.000 claims description 11
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- 238000010891 electric arc Methods 0.000 claims description 6
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 4
- 229910000593 SAF 2205 Inorganic materials 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 4
- 229910000906 Bronze Inorganic materials 0.000 claims description 2
- 239000010974 bronze Substances 0.000 claims description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910001119 inconels 625 Inorganic materials 0.000 claims description 2
- 229910001247 waspaloy Inorganic materials 0.000 claims description 2
- 229910052758 niobium Inorganic materials 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 26
- 239000000463 material Substances 0.000 description 9
- 239000012809 cooling fluid Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 230000032683 aging Effects 0.000 description 5
- 238000005242 forging Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229910001114 SAF 2507 Inorganic materials 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 229910001026 inconel Inorganic materials 0.000 description 2
- 238000001694 spray drying Methods 0.000 description 2
- 239000013077 target material Substances 0.000 description 2
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 1
- 229910001573 adamantine Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
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- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The present invention relates to a kind of cutting tip that superalloy and stainless steel are carried out turning of being used for, it comprises very thin grain hard substrate and coating.Described substrate comprises WC, the Co of 5-8wt-% and the Cr of 0.3-1.5wt-%.In addition, also there are element ti, Ta or the Ti of ppm level and the mixture of Ta.Ratio Me/Co=(at-%Ti+at-%Nb+at-%Ta)/at-%Co is less than or equal to 0.014-(CW_Cr) * 0.008, and is higher than 0.0005.The average grain size of sintering WC is 0.5-0.95 μ m, and CW_Cr is 0.75-0.95.Cemented carbide body scribbles PVDTi
xAl
1-xThe N coating, it has the average composition of 0.4＜x＜0.9, and coating exists as the single or multiple lift coating, and total coating thickness＞1 μ m, but＜6.0 μ m.
Description
Technical field
The present invention relates to a kind of cutting tool insert of band coating, be specially adapted under wet condition, superalloy and stainless steel be carried out turning.Adamantine fine grain substrate is with (Ti, Al) combination of the PVD coating of N has greatly increased anti-notch wear, notching, and keeps good back knife face wearability, good plasticity_resistant deformation and the anti-notch wear, notching of auxiliary-blade.
Background technology
Superalloy and stainless steel especially develop into and are used for requirement the remarkable mechanical performance and the application scenario of chemical property are at high temperature arranged.Superalloy is used for aero-engine, and stainless steel is used for application in a big way.Improving almost each metallurgical technology that high-temperature behavior makes changes and makes and more difficult these alloys are processed.For stainless steel, for austenitic stainless steel and so-called two phase stainless steel, this is the most outstanding.
Along with the increase of elevated temperature strength, alloy can become harder under cutting temperature and rigidity more.This causes the cutting force that increases on the cutting edge and the wearing and tearing of increase in process.
Because firmer material production more heat in chip forming procedure, and, therefore produce very high cutting temperature because the thermal conductivity of these alloys is relatively low.This also impels the wearing and tearing of cutting edge to increase.
Turning can be divided into roughing, half roughing, semifinishing and fine finishining usually.In roughing and half roughing, cutting depth is usually all greater than nose radius, and in HRSA and stainless steel, the wear mechanism that the notch wear, notching on major cutting edge and auxiliary-blade is normally main also has plastic deformation wearing and tearing, wear of the tool flank and burner wearing and tearing.In semifinishing and fine finishining, cutting depth is usually less than nose radius, and wear of the tool flank, plastic deformation wearing and tearing and burner wearing and tearing account for leading.
Summary of the invention
The purpose of this invention is to provide a kind of cutting tool insert, be specially adapted under wet condition, superalloy and stainless steel be carried out turning.
Another object of the present invention provides a kind of cutting tool insert, and its major cutting edge has the breach wearability of raising in roughing and half roughing, and has the back knife face wearability of raising in semifinishing and fine finishining application.
Now pleasantly surprised discovery, when turning superalloy and stainless steel, the cutting tool insert that is coated with the very fine grain of PVD coating and high rigidity has greatly improved the breach wearability on master (leading) blade, and maintain plasticity_resistant deformation and wear of the tool flank in roughing and the half roughing operation, and the back knife face wearability that in semifinishing and finishing operations, increases.
Thus, the present invention relates to a kind of cutting tool insert of band coating, it is made up of cemented carbide body and coating.
Description of drawings
Fig. 1 illustrate according to carbide alloy of the present invention adopt backscattered electron, by SEM amplify 6000 * sintering structure.
Fig. 2 illustrate adopt secondary electron, by SEM amplify 6000 * the blade of handling according to PVD coating of the present invention.
Fig. 3 illustrate according to the carbide alloy of prior art adopt backscattered electron, by SEM amplify 6000 * sintering structure.
Fig. 4 illustrate adopt secondary electron, by SEM amplify 6000 * the blade handled of the PVD coating according to prior art.
The specific embodiment
Cemented carbide body comprises that crystallite dimension is 0.4-1.0 μ m, be preferably the tungsten carbide (WC) of 0.5-0.95 μ m, the Co of 5-8wt-%, be preferably the Co of 5.2-7.8wt-%, most preferably be the Co of 5.5-7.5wt-%, and Cr, make the Cr/Co ratio be 0.05-0.15 by weight, be preferably 0.07-0.14, and the WC of surplus.In addition, also there are element ti, Ta or the Ti of ppm (1,000,000/) level and the mixture of Ta, make ratio Me/Co=(at-%Ti+at-%Ta)/at-%Co be less than or equal to 0.014-(CW_Cr) * 0.008, and be higher than 0.0005, preferably be higher than 0.0007, and CW_Cr is 0.75-0.95, is preferably 0.76-0.90, wherein
CW_Cr＝(magnetic-％Co+1.13＊wt-％Cr)/wt-％Co
Wherein magnetic-%Co is the percentage by weight of magnetic Co, and wt-%Cr is the percentage by weight of Cr in carbide alloy, and wt-%Co is the percentage by weight of Co in carbide alloy.
Have been found that according to the present invention, when cemented carbide body has the CW_Cr of 0.75-0.95, when being preferably 0.76-0.90, then can realize the cutting ability that improves.
In a preferred implementation, Co content is 5.7-6.1wt-%, and in another preferred implementation, Co content is 6.8-7.2wt-%.
Cemented carbide body scribbles PVD Ti
xAl
1-xThe N coating wherein has the average composition of 0.4＜x＜0.9.The gross thickness of coating is＞1 μ m, is preferably＞1.5 μ m, most preferably be＞2.0 μ m, but＜6.0 μ m, be preferably＜5.0 μ m, most preferably be＜4.5 μ m.Component and thickness all are at the back knife face, measure apart from nose radius 1mm and apart from 200 μ m places of cutting edge.
In a preferred implementation, coating comprises uniform Al
xTi
1-xThe N layer, wherein x=0.6-0.67 is preferably x=0.62.
In another preferred implementation, coating comprises that aperiodicity (be made up of binary A/B/A/B/A/B structure for Ti, Al) N multilayer, wherein runs through alternately sublayer A and B that whole coating repeats plurality of thin by this multilayer.The sequence of sublayer A/B is expressed as a thin layer at this.Because the aperiodicity feature of coating, so the thickness of each thin layer all changes, but average thickness of thin layer is preferably 60-120nm in 30-300nm.Sublayer A comprises Al
xTi
1-xN, wherein x=0.40-0.7 is preferably x=0.5-0.67.Layer B comprises Ti
yAl
1-yN, wherein y=0.6-1 is preferably x=0.75-1.With the stoichiometry of the measured whole coating of for example microprobe or EDS at scope Ti
zAl
1-zIn the N, z=0.40-0.7 is preferably z=0.45-0.6.In a preferred embodiment, the outer Ti that has adequate thickness
bAl
1-bN, b=0.8-0.9 is preferably 0.82-0.85, provides visible, uniform bronze outward appearance, and it is thick to be preferably 0.1-1 μ m.
In another preferred embodiment, the coating uniform Ti that serves as reasons
0.5Al
0.5N layer and have TiN and Ti
0.5Al
0.5The multilayer that the sequence layer of the thin layer of the alternating layer of N is formed.This sequence layer repeats 10-15 time.Uniform Ti
0.5Al
0.5The thickness of N layer is 0.1-0.2 μ m, and the thickness of thin layer is 0.1-0.2 μ m.Each independent TiN or Ti in the thin layer
0.5Al
0.5The thickness of N layer is 0.1-20nm.The average composition of this multilayer is preferably Ti
cAl
1-cThe N layer, c=0.7-0.9.
The invention still further relates to a kind of manufacturing and comprise the method for the coated cutting tool insert of cemented carbide body and coating.Cemented carbide body adopts that conventional PM technique is milled, compacting and sintering manufacturing, and it comprises the Co of 5-8wt-%, be preferably the Co of 5.2-7.8wt-%, most preferably be the Co of 5.5-7.5wt-%, and Cr, make the Cr/Co ratio be 0.05-0.15, the WC of 0.07-0.14 more preferably, and surplus by weight.In addition, also there are element ti, Ta or the Ti of ppm level and the mixture of Ta, make ratio Me/Co=(at-%Ti++at-wt%Nb+at-%Ta)/at-%Co be less than or equal to 0.014-(CW_Cr) * 0.008, and be higher than 0.0005, preferably be higher than 0.0007, and CW_Cr is 0.75-0.95, is preferably 0.76-0.90, wherein
CW_Cr＝(magnetic-％Co+1.13＊wt-％Cr)/wt-％Co。
The value of CW_Cr is monitored by an amount of carbon black or tungsten powder are joined in the mixture of powders.
After routine, after the sintering processes, use the PVD method, preferably with the PVD Ti that has the average composition of 0.4＜x＜0.9 on the electric arc vapour deposition method deposition
xAl
1-xThe N coating.Total coating thickness＞1 μ m, more preferably＞1.5 μ m most preferably is＞2.0 μ m, but＜6.0 μ m, be preferably＜5.0 μ m, most preferably be＜4.5 μ m.
The invention still further relates to purposes according to above-mentioned blade, be used for the wet heat-resisting superalloy of turning, Inconel (inconel) 718 for example, Inconel 625, Waspaloy, Udimet720 and stainless steel, as AISI/SAE 304, San-Mac 316L, SAF2205, SAF2057, cutting speed is 30-250m/ minute, and feed velocity is the 0.1-0.4mm/ commentaries on classics.
Embodiment 1
With tungsten carbide powder, the Co powder of the very thin crystal grain of 6wt-%, the Cr of 0.6wt-%, (they are with fine grain TiC, TaC and the Cr of H.C.Starck company for the Ti of 140ppm and the Ta of 100ppm
3C
2Powder and add) grind with conventional depressor.After grinding and the spray-drying, powder is pressed into CNMG120408-QM and CNGP120408 blade, and at 1410 ℃ of following sintering.After the sintering, measure CW_Cr, Hc and HV3.CW_Cr is confirmed as 0.76, and 0.014-(CW_Cr) * 0.008 is confirmed as 0.00791, and Me/Co is confirmed as 0.00296, and Hc is 31kA/m, and Vickers hardness is 1983HV3.The average grain size of sintering WC is confirmed as 0.83 μ m from the coercivity measurement result.Fig. 1 illustrate carbide alloy adopt backscattered electron, by SEM amplify 6000 * sintering structure.
After routine, after the sintering processes, adopt by Ti
33Al
67The target material of alloy composition comes deposited coatings.At N
2Carry out the electric arc evaporation in the atmosphere.Final total coating layer thickness is 2.0 μ m, and coating is by uniform Al
0.62Ti
0.38The N layer is formed.Fig. 2 illustrate adopt secondary electron, by SEM amplify 6000 * the blade handled of PVD coating.
Embodiment 2
With tungsten carbide, the Co powder of the very thin crystal grain of 7wt-%, the Cr of 0.7wt-%, (they are as fine grain TiC, TaC and the Cr of H.C.Starck company for the Ti of 140ppm and the Ta of 100ppm
3C
2Powder and add) with conventional depressor wet lapping.After grinding and the spray-drying, powder is pressed into CNMG120408-QM and CNGP120408 blade, and at 1410 ℃ of following sintering.After the sintering, measure CW_Cr, Hc and HV3.CW_Cr is confirmed as 0.72, and 0.014-(CW_Cr) * 0.008 is confirmed as 0.00737, and Me/Co is confirmed as 0.00258, and Hc is 29kA/m, and Vickers hardness is 1916HV3.The average grain size of sintering WC is confirmed as 0.77 μ m from the coercivity measurement result.
After routine, after the sintering processes, adopt by Ti
33Al
67The target material of alloy composition comes deposited coatings.At N
2Carry out the electric arc evaporation in the atmosphere.Final total coating layer thickness is 2.4 μ m, and coating is by uniform Al
0.62Ti
0.38The N layer is formed.
Embodiment 3
Carbide chip described in the embodiment 1 is after routine after the sintering processes, by at N
2The electric arc evaporation that carries out in the atmosphere and be equipped with coating.(this multilayer is by uniform Ti for Ti, Al) N multilayer to have deposited the PVD of 3.9 μ m
0.5Al
0.5N layer and have TiN and Ti
0.5Al
0.5The sequence layer of the thin layer of the alternating layer of N is formed.This sequence layer repeats 12 times.Uniform Ti
0.5Al
0.5The thickness of N layer is 0.1-0.2 μ m, and the thickness of thin layer is 0.1-0.2 μ m.Each independent TiN or Ti in the thin layer
0.5Al
0.5The thickness of N layer is 0.1-20nm.The average composition of measuring multilayer with SEM-EDS is Ti
0.8Al
0.2N.
Embodiment 4
Carbide chip described in the embodiment 1 is after routine after the sintering processes, by at N
2The electric arc evaporation that carries out in the atmosphere and be equipped with coating.(this multilayer is (Al by binary aperiodicity A/B/A/B/ multilayer (thickness of average A+B is 60-120nm) and component for Ti, Al) N multilayer to have deposited the PVD of 3.6 μ m
0.84Ti
0.16) the coloured outermost layer of N forms.Average composition according to microprobe analysis is (T
0.50Al
0.50) N.
Embodiment 5 (prior art)
The component of the carbide alloy turning insert of prior art is the Co of 6wt-%, the Nb of 0.14wt-%, the Ta of 0.22wt-%, the Ti of 0.010wt-%, and the WC of surplus.CW_Cr is confirmed as 0.99, and 0.014-(CW_Cr) * 0.008 is confirmed as 0.0068, and Me/Co is confirmed as 0.00267.Vickers hardness is confirmed as 1793HV3, and Hc is 21kA/m.The crystallite dimension of sintering WC is defined as 1.3 μ m from the coercivity measurement result, and Fig. 3 illustrate according to the carbide alloy of prior art adopt backscattered electron, by SEM amplify 6000 * sintering structure.Cemented carbide body scribbles the Al as embodiment 1 and embodiment 2 described 2.7 μ m
62Ti
38The even PVD coating of N.
Fig. 4 illustrate adopt secondary electron, by SEM amplify 6000 * the blade handled of the PVD coating according to prior art.
Embodiment 6
Blade from embodiment 1 and embodiment 5 is tested in the turning of Inconel 718 bars.
Operation: turning-fine finishining
Workpiece: forged and finished bar
Material: forging and Ageing Treatment is crossed Inconel 718 under the condition
Cutting speed: 80m/ minute n
Feed velocity: 0.15mm/ changes
Cutting depth: 0.5mm
Blade model: CNGP120408
Attention: cut having under the cooling fluid
Result: cutter life, the number of minutes of cutting
Embodiment 1 (the present invention): 4.5 minutes
Embodiment 5 (prior art): 3.5 minutes
The cutter life standard is wear of the tool flank 0.2mm.
Embodiment 7
Blade from embodiment 2 and embodiment 5 is tested in the turning of Inconel 718 bars.
Operation: turning-fine finishining
Workpiece: forged and finished bar
Material: the Inconel 718 under forging and Ageing Treatment condition
Cutting speed: 80m/ minute
Feed velocity: 0.15mm/ changes
Cutting depth: 0.5mm
Blade model: CNGP120408
Attention: cut having under the cooling fluid
Result: cutter life, the number of minutes of cutting
Embodiment 2 (the present invention): 4.0 minutes
Embodiment 5 (prior art): 3.5 minutes
The cutter life standard is wear of the tool flank 0.2mm.
Embodiment 8
Blade from embodiment 1, embodiment 3, embodiment 4 and embodiment 5 is tested in the turning of Inconel 718 bars.
Operation: turning-half roughing
Workpiece: forged and finished bar
Material: the Inconel 718 under forging and Ageing Treatment condition
Cutting speed: 60m/ minute
Feed velocity: 0.2mm/ changes
Cutting depth: 1.5mm
Blade model: CNMG120408-QM
Attention: cut having under the cooling fluid
Result: cutter life, the number of minutes of cutting
Embodiment 1 (the present invention): 8.0 minutes
Embodiment 3 (the present invention): 4.0 minutes
Embodiment 4 (the present invention): 5.5 minutes
Embodiment 5 (prior art): 3.0 minutes
The cutter life standard is that the notch wear, notching on main cutting edge is 0.3mm.
Embodiment 9
Blade from embodiment 2 and embodiment 5 is tested in the turning of Inconel 718 bars.
Operation: turning-half roughing
Workpiece: forged and finished bar
Material: the Inconel 718 under forging and Ageing Treatment condition
Cutting speed: 60m/ minute
Feed velocity: 0.2mm/ changes
Cutting depth: 1.5mm
Blade model: CNMG120408-QM
Attention: cut having under the cooling fluid
Result: cutter life, the number of minutes of cutting
Embodiment 2 (the present invention): 7.5 minutes
Embodiment 5 (prior art): 3.0 minutes
The cutter life standard is that the notch wear, notching on main cutting edge is 0.3mm.
Blade from embodiment 1, embodiment 2 and embodiment 5 is tested in the turning of Inconel 718 bars.
Operation: turning-half roughing
Workpiece: forged and finished bar
Material: the Inconel 718 under forging and Ageing Treatment condition
Cutting speed: 60m/ minute
Feed velocity: 0.2mm/ changes
Cutting depth: 1.5mm
Blade model: CNMG120408-QM
Attention: cut having under the cooling fluid
Result: the 3 minutes notch wear, notchings of cutting back on main cutting edge
Embodiment 1 (the present invention): 0.02mm
Embodiment 2 (the present invention): 0.09mm
Embodiment 5 (prior art): 0.40mm
The cutter of processing after 3 minutes changes.
Blade from embodiment 1 and embodiment 5 is tested in the turning of SAF2205 bar.
Operation: turning-half roughing
Workpiece: the bar of having processed
Material: SAF2205
Cutting speed: 170m/ minute
Feed velocity: 0.33mm/ changes
Cutting depth: 2.0mm
Blade model: CNMG120408-QM
Attention: cut having under the cooling fluid
Result: cut the notch wear, notching after 10 minutes
Embodiment 1 (the present invention): 0.09mm
Embodiment 5 (prior art): 0.24mm
Embodiment 12
Blade from embodiment 1 and embodiment 5 is tested in the turning of SAF2507 bar.
Operation: turning-roughing
Workpiece: the bar of having processed
Material: SAF2507
Cutting speed: 130m/ minute
Feed velocity: 0.23mm/ changes
Cutting depth: 2.0mm
Blade model: CNMG120408-QM
Attention: cut having under the cooling fluid
Result: cut the notch wear, notching on main cutting edge after 12 minutes
Embodiment 1 (the present invention): 0.04mm
Embodiment 5 (prior art): 0.18mm
Embodiment 13
Blade from embodiment 2 and embodiment 5 is tested in the turning of AISI/SAE 304 bars.
Operation: turning
Workpiece: the bar of having processed
Material: AISI/SAE 304
Cutting speed: 200m/ minute
Feed velocity: 0.35mm/ changes
Cutting depth: 1.2mm
Blade model: CNMG120408-QM
Attention: cut having under the cooling fluid
Result: cutter life, cutting the number of minutes
Embodiment 2 (the present invention): 12.0 minutes
Embodiment 5 (prior art): 8.5 minutes
The cutter life standard is that the notch wear, notching on main cutting edge is 0.3mm.
Claims (25)
1. be used for cutting tool insert that superalloy and stainless steel are carried out turning, comprise substrate and coating, it is characterized in that:
Described substrate comprises WC, the Co of 5-8wt-%, Cr makes that the Cr/Co ratio is 0.05-0.15 on weight, and the mixture of the Ti of ppm level, Ta or Ti and Ta, exist with such amount, promptly make ratio Me/Co=(at-%Ti+at-%Ta)/at-%Co be less than or equal to 0.014-(CW_Cr) * 0.008, and be higher than 0.0005, and CW_Cr is 0.75-0.95, wherein
CW_Cr＝(magnetic-％Co+1.13＊wt-％Cr)/wt-％Co
Wherein magnetic-%Co is the percentage by weight of magnetic Co, and wt-%Cr is the percentage by weight of Cr in carbide alloy, and wt-%Co is the percentage by weight of Co in carbide alloy, and,
Described coating is PVD Ti
xAl
1-xThe N coating, it has the average composition of 0.4＜x＜0.9, and coating exists as signal layer coating or laminated coating, and the gross thickness of coating is＞1 μ m, but＜6.0 μ m.
2. cutting tool insert according to claim 1 is characterized in that: described ratio Me/Co=(at-%Ti+at-%Ta)/at-%Co is higher than 0.0007.
3. according to each described cutting tool insert among the claim 1-2, it is characterized in that: described CW_Cr is 0.76-0.90.
4. according to each described cutting tool insert among the claim 1-3, it is characterized in that: the gross thickness of described signal layer coating or laminated coating is＞2 μ m, but＜4.5 μ m.
5. according to each described cutting tool insert among the claim 1-4, it is characterized in that: described coating comprises uniform Al
xTi
1-xN layer, and x=0.6-0.67.
6. cutting tool insert according to claim 5 is characterized in that: x=0.62.
7. cutting tool insert according to claim 1, it is characterized in that: described coating comprises aperiodicity (Ti, Al) N multilayer, this multilayer is made of binary A/B/A/B/A/B structure, wherein run through alternately sublayer A and B that whole coating repeats to approach, and the thickness of thin layer A/B is 30-300nm, and wherein sublayer A comprises Al
xTi
1-xN, x=0.40-0.7 wherein, and sublayer B comprises Ti
yAl
1-yN, y=0.6-1 wherein, and total component is at scope Ti
zAl
1-zIn the N, z=0.40-0.7.
8. cutting tool insert according to claim 7 is characterized in that: the thickness of described thin layer A/B is 60-120nm.
9. according to each described cutting tool insert among the claim 7-8, it is characterized in that: x=0.5-0.67.
10. according to each described cutting tool insert among the claim 7-9, it is characterized in that: y=0.75-1.
11., it is characterized in that: z=0.45-0.6 according to each described cutting tool insert among the claim 7-10.
12. according to each described cutting tool insert among the claim 7-11, it is characterized in that: outer Ti with adequate thickness
bAl
1-bN, b=0.8-0.9 provides visible, uniform bronze outward appearance.
13. cutting tool insert according to claim 12 is characterized in that: b=0.82-0.85.
14. cutting tool insert according to claim 1 is characterized in that: the described coating uniform Ti that serves as reasons
0.5Al
0.5N layer and have TiN and Ti
0.5Al
0.5The multilayer that the sequence layer of the thin layer of the alternating layer of N is formed, this sequence layer repeats 10-15 time, described uniform Ti
0.5Al
0.5The thickness of N layer is 0.1-0.2 μ m, and the thickness of described thin layer is 0.1-0.2 μ m, and described thin layer interior each independent TiN or Ti
0.5Al
0.5The thickness of N layer is 0.1-20nm, and the average composition of described multilayer is preferably Ti
cAl
1-cN, and c=0.7-0.9.
15. according to each described cutting tool insert among the claim 1-14, it is characterized in that: described substrate comprises the Co of 5.5-7.5wt-%.
16. according to each described cutting tool insert among the claim 1-15, it is characterized in that: described substrate comprises the Co of 5.7-6.1wt-%.
17. according to each described cutting tool insert among the claim 1-15, it is characterized in that: described substrate comprises the Co of 6.8-7.2wt-%.
18. make the method for the cutting tool insert of coating, described blade is made up of carbide alloy substrate and coating, it is characterized in that following steps:
Substrate is provided, substrate adopts that conventional PM technique is milled, compacting and sintering form, and described substrate comprises WC, the Co of 5-8wt-%, Cr, make that the Cr/Co ratio is 0.05-0.15 on weight, and the mixture of the Ti of ppm level, Ta or Ti and Ta, exist with such amount, promptly make ratio Me/Co=(at-%Ti+at-%Ta)/at-%Co be less than or equal to 0.014-(CW_Cr) * 0.008, and be higher than 0.0005, and CW_Cr is 0.75-0.95, wherein
CW_Cr＝(magnetic-％Co+1.13＊wt-％Cr)/wt-％Co
Wherein magnetic-%Co is the percentage by weight of magnetic Co, and wt-%Cr is the percentage by weight of Cr in carbide alloy, and wt-%Co is the percentage by weight of Co in carbide alloy, and,
Adopt the PVD method, depositing Ti
xAl
1-xThe N coating, described coating has the average composition of 0.4＜x＜0.9, and it exists as signal layer coating or laminated coating, and the gross thickness of coating is＞1 μ m, but＜6.0 μ m.
19. method according to claim 18 is characterized in that: described substrate comprises the Co of 5.5-7.5wt-%.
20. according to each described method among the claim 18-19, it is characterized in that: described ratio Me/Co=(at-%Ti+at-%Ta)/at-%Co is higher than 0.0007.
21. according to each described method among the claim 18-20, it is characterized in that: described CW_Cr is 0.76-0.90.
22. according to each described method among the claim 18-21, it is characterized in that: the gross thickness of described signal layer coating or laminated coating is＞2 μ m, but＜4.5 μ m.
23. according to each described method among the claim 18-22, it is characterized in that: described PVD method is the electric arc vapour deposition method.
24. according to the purposes of each described blade among the claim 1-17, be used for superalloy and stainless steel are carried out turning, cutting speed is 30-250m/ minute, and feed velocity is the 0.1-0.4mm/ commentaries on classics.
25. purposes according to claim 24, wherein said superalloy belongs to Inconel 718, and Inconel 625, Waspaloy, and the group of Udimet 720 compositions, and described stainless steel belongs to AISI/SAE 304, San-Mac 316L, SAF2205, and the group of SAF2057 composition.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101095431A CN101596610A (en) | 2008-06-02 | 2008-06-02 | Be used for fine grain hard alloy that superalloy (HRSA) and stainless steel are carried out turning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101095431A CN101596610A (en) | 2008-06-02 | 2008-06-02 | Be used for fine grain hard alloy that superalloy (HRSA) and stainless steel are carried out turning |
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| CN101596610A true CN101596610A (en) | 2009-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102918183A (en) * | 2010-04-23 | 2013-02-06 | 山高刀具公司 | PVD coating for metal machining |
-
2008
- 2008-06-02 CN CNA2008101095431A patent/CN101596610A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102918183A (en) * | 2010-04-23 | 2013-02-06 | 山高刀具公司 | PVD coating for metal machining |
| CN102918183B (en) * | 2010-04-23 | 2015-01-21 | 山高刀具公司 | PVD coating for metal machining |
| US9028960B2 (en) | 2010-04-23 | 2015-05-12 | Seco Tools Ab | PVD coating for metal machining |
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