CN115386834A - Composite nitride coating circular saw blade and preparation method thereof - Google Patents
Composite nitride coating circular saw blade and preparation method thereof Download PDFInfo
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- 239000011248 coating agent Substances 0.000 title claims abstract description 80
- 239000002131 composite material Substances 0.000 title claims abstract description 51
- 150000004767 nitrides Chemical class 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 238000000151 deposition Methods 0.000 claims abstract description 63
- 230000008021 deposition Effects 0.000 claims abstract description 50
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 11
- 239000011159 matrix material Substances 0.000 claims abstract description 10
- 239000000758 substrate Substances 0.000 claims abstract description 8
- -1 compound nitride Chemical class 0.000 claims description 15
- 238000005240 physical vapour deposition Methods 0.000 claims description 9
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/0641—Nitrides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/02—Circular saw blades
- B23D61/028—Circular saw blades of special material
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Abstract
The invention relates to a composite nitride coating circular saw blade and a preparation method thereof, and the composite nitride coating circular saw blade comprises a circular saw blade matrix, wherein a composite nitride coating is deposited on the surface of the circular saw blade matrix, the composite nitride coating comprises a first AlMeN layer, an alternate deposition layer and a first MeXN layer which are sequentially deposited from inside to outside of the circular saw blade matrix, and the alternate deposition layer is formed by alternately depositing a second AlMeN layer and a second MeXN layer; wherein, in the AlMeN layer, me is one or more of elements Ti, ta, cr, Y, mo, nb and Zr; in the MeXN layer, me is one or more of elements Ti, al, ta, cr, Y, mo, nb and Zr, and X is one or more of elements Si and B. The composite nitride coating circular saw blade has high hardness, high toughness, excellent wear resistance, excellent friction reduction and excellent high temperature oxidation resistance, and the coating and the substrate have high bonding strength.
Description
Technical Field
The invention relates to the field of preparation of coating materials for sawing cold-cutting circular saw blades, in particular to a composite nitride coating circular saw blade and a preparation method thereof.
Background
More than 80% of steel products require various types of sawing tools to complete the cutting operation. In modern manufacturing industry, sawing blanking is used as a starting point for processing steel products, and has important significance for improving production efficiency, saving raw materials and reducing secondary processing quantity. Compared with a bimetallic strip saw blade, the circular saw blade has the main advantages of higher saw cutting precision and efficiency, and can be widely applied to cutting common steel materials and materials such as steel billets and square billets with special-shaped end surfaces in the steel smelting industry, especially steel materials such as pipes, rods and sectional materials.
With the continuous progress of advanced manufacturing technology, environment-friendly high-speed and high-efficiency cutting processing becomes the development trend of advanced manufacturing industry. As a high-precision, high-efficiency cutting tool, a circular saw blade is gradually advancing toward high-speed, high-efficiency cutting. At present, the commercial coatings for cutting and processing the steel materials of the circular saw blade on the market are mainly TiN, tiAlN, crN and AlCrN coatings with simple structures prepared by a physical vapor deposition mode. But facing high-speed and high-efficiency sawing and cutting processing, domestic coated circular saw blade products are still in the blank field. And in the actual cutting off processing of the steel such as the steel billet of dysmorphism terminal surface, square billet, especially pipe, stick, section bar, in order to promote efficiency, often adopt the mode of a plurality of work pieces stack or parallel arrangement, consequently not only can appear the coolant liquid to the cooling of circular saw piece inadequately, and then appear being approximate to dry-type cutting's operating mode, the circular saw piece still can bear higher cutting temperature and cutting force, under the combined action of thermal load and mechanical load, lead to the sawtooth to take place quick wear out failure, lead to the processing scene to have a series of safety production hidden dangers such as noise pollution is big, frequently change circular saw piece and circular saw piece fracture.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a composite nitride coating circular saw blade which has high hardness, high toughness, excellent wear resistance, friction reduction and high-temperature oxidation resistance and high bonding strength between a coating and a substrate and a preparation method thereof.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a composite nitride coating circular saw blade comprises a circular saw blade matrix, wherein a composite nitride coating is deposited on the surface of the circular saw blade matrix, the composite nitride coating comprises a first AlMeN layer, an alternate deposition layer and a first MeXN layer which are sequentially deposited from inside to outside of the circular saw blade matrix, and the alternate deposition layer is formed by alternately depositing a second AlMeN layer and a second MeXN layer; wherein, in the AlMeN layer, me is one or more of elements Ti, ta, cr, Y, mo, nb and Zr; in the MeXN layer, me is one or more of elements Ti, al, ta, cr, Y, mo, nb and Zr, and X is one or more of elements Si and B.
Further, the thickness of the first AlMeN layer is 0.5-2.5 μm, the thickness of the alternately deposited layers is 0.5-4 μm, and the thickness of the first MeXN layer is 1-3 μm.
Optionally, the alternating deposition layers have a thickness of 1-3.5 μm, and further 1.2-3 μm.
Further, the thickness of the second AlMeN layer is 1-100nm, and the thickness of the second MeXN layer is 1-100nm.
Optionally, the sum of the thicknesses of the adjacent second AlMeN layer and the second MeXN layer is 8-18nm, further 10-16nm.
Furthermore, in the first AlMeN layer, me is one or more of elements Ti, ta, cr, Y, mo, nb and Zr, the atomic percentage of Al and Me is more than or equal to 1.0, and the content of N is 45-55 at%; in the second AlMeN layer, me is one or more of elements Ti, ta, cr, Y, mo, nb and Zr, the atomic percent of Al and Me is more than or equal to 1.0, and the content of N is 45-55 at.%.
Furthermore, the atomic percentage of Al to Me in the first AlMeN layer is 1.1-1.8, preferably 1.2-1.7, and more preferably 1.4-1.6.
Furthermore, in the first MeXN layer, me is one or more of elements Ti, ta, cr, Y, mo, nb and Zr, and the content of N is 45-55at.%; when X in the first MeXN layer is element Si, the content of Si is 1 to 20at.%; when X in the first MeXN layer is element B, the content of B is 1 to 20at.%; when X in the first MeXN layer is the elements Si and B, the sum of the contents of Si and B does not exceed 25at.%. In the second MeXN layer, me is one or more of elements Ti, ta, cr, Y, mo, nb and Zr, and the content of N is 45-55 at%; when X in the second MeXN layer is element Si, the content of Si is 1 to 20at.%; when X in the second MeXN layer is element B, the content of B is 1 to 20 at%; when X in the second MeXN layer is the elements Si and B, the sum of the contents of Si and B does not exceed 25at.%.
Optionally, the number of alternating deposition layers is 15-200.
Optionally, the ratio of the thicknesses of the second AlMeN layer and the second MeXN layer of each of the alternately deposited layers gradually transitions from 2:1 to 1:1 from inside to outside.
Optionally, the circular saw blade substrate is a cold cut circular saw blade substrate. Preferably, the material of the sawtooth cutter head of the cold cutting circular saw blade base body is one of high-speed steel, hard alloy and metal ceramic, and the material of the disc body of the cold cutting circular saw blade base body is one of high-speed steel and alloy tool steel.
The preparation method of the composite nitride coating circular saw blade is characterized by comprising the following steps:
s1, providing a circular saw blade matrix and carrying out pretreatment;
s2, preparing a first AlMeN layer on the pretreated circular saw blade substrate through physical vapor deposition, then alternately depositing a second AlMeN layer and a second MeXN layer to form an alternate deposition layer, and then depositing a first MeXN layer to obtain a crude product of the composite nitride coating circular saw blade;
and S3, carrying out post-treatment on the crude product of the circular saw blade with the composite nitride coating to obtain a finished product of the circular saw blade with the composite nitride coating.
The composite nitride coating circular saw blade is suitable for quickly cutting off common steel and materials such as steel billets, square billets and the like with special-shaped end surfaces, in particular to steel such as pipes, rods, sectional materials and the like.
In the technical scheme of the invention, the circular saw blade base body can be various cold cutting circular saw blades known in the field, and the material of the tooth tool bit is particularly suitable for high-speed steel, hard alloy and metal ceramic.
Compared with the prior art, the invention has the advantages that:
1. according to the circular saw blade with the composite nitride coating, through the structural design of the composite coating, on one hand, alloy elements are introduced into AlMeN to refine crystal grains, and lattice distortion (such as point defects, dislocation and the like) to a certain degree is caused through multi-component solid solution, so that a stress field is generated, the dislocation movement resistance is increased, the strength and the hardness of the material are increased, and a solid solution strengthening effect is obtained; on the other hand, a MeXN nano composite system is constructed, a two-phase net-shaped wrapping structure of amorphous phase XN and nano crystal MeN is realized, the size of the MeN nano crystal cannot be regulated to form dislocation, the deformation resistance is strong, the net-shaped amorphous phase can limit the growth of crystal grains and inhibit the sliding of crystal boundary, and meanwhile, the amorphous net-shaped structure can deflect and split microcracks to realize the hardness improvement of the coating. Therefore, the circular saw blade with the composite nitride coating has high hardness, high toughness, excellent wear resistance, excellent antifriction and excellent high-temperature oxidation resistance, and the coating has high bonding strength with a substrate.
2. Meanwhile, in order to avoid the problems of toughness reduction, over-high stress and the like which are caused by the fact that the movement of dislocation is hindered to improve the coating hardness, the periodic multilayer structure is introduced, the single-layer thickness of the AlMeN layer and the MeXN layer in each alternate deposition unit is regulated and controlled, the coherent epitaxial growth of the nano multilayer structure or the multilayer structure with different components in transition of the AlMeN layer by taking the AlMeN layer as a template can be realized, and the coating has high hardness and toughness at the same time through the crack deflection transition at the interface between layers and the passivation of crack tips caused by the nano-scale plastic deformation at the interface.
3. The preparation method has the characteristics of simple process, small equipment hardware investment, controllable production cost and the like, and the composite nitride coating cold-cutting circular saw blade prepared by the method can obviously prolong the service life of the circular saw blade and meet the requirements of high-speed and high-efficiency cutting of common steel and materials such as steel billets and square billets with special-shaped end surfaces, especially steel such as pipes, rods and sectional materials.
Drawings
FIG. 1 is a cross-sectional view of a composite nitride coated circular saw blade according to the present invention.
Detailed Description
The invention provides a cold-cutting circular saw blade with a composite nitride coating and a preparation method thereof, and a person skilled in the art can use the contents for reference and appropriately improve the process parameters to realize the cold-cutting circular saw blade. It is specifically noted that all such substitutions and modifications will be apparent to those skilled in the art, and are intended to be within the scope of the present invention. While the methods and applications of this invention have been described in terms of preferred embodiments, it will be apparent to those of ordinary skill in the art that variations and modifications in the methods and applications described herein, as well as other suitable variations and combinations, may be made to implement and use the techniques of this invention without departing from the spirit and scope of the invention.
Embodiments of the present invention will be described in detail with reference to examples.
Example 1
A compound nitride coating circular saw blade comprises a circular saw blade base body 1, wherein a compound nitride coating is deposited on the surface of the circular saw blade base body 1, the compound nitride coating comprises a first AlMeN layer 2, an alternate deposition layer 3 and a first MeXN layer 4 which are sequentially deposited from inside to outside of the circular saw blade base body, and the alternate deposition layer is formed by alternately depositing a second AlMeN layer 31 and a second MeXN layer 32; in the AlMeN layer, me is element Cr, and the percentages of the elements are as follows: 30.0at.% Al, 20.0at.% Cr, 50.0at.% N; in the MeXN layer, me is element Ti, X is element Si, and the atomic percentages of the elements are as follows: 41.2at.% Ti, 8.3at.% Si, and 51.5at.% N. The adjacent 1 second AlMeN layer 31 and 1 second MeXN layer 32 are 1 alternating deposition unit, the thickness of the alternating deposition unit is 12nm, and the number of the alternating deposition units is 100. The ratio of the thicknesses of the second AlMeN layer 31 and the second MeXN layer 32 of each alternating deposition unit gradually transits from 2:1 to 1:1 from inside to outside, specifically, the ratio of the thicknesses of the second AlMeN layer 31 and the second MeXN layer 32 of the first 50 alternating deposition units is 2:1 and the ratio of the thicknesses of the second AlMeN layer 31 and the second MeXN layer 32 of the last 50 alternating deposition units is 1:1, as viewed from inside to outside.
The thickness of the composite nitride coating was 3.5 μm, with the thickness of the first AlMeN layer 2 being 1.0 μm, the thickness of the alternate deposition layer 3 being 1.2 μm, and the thickness of the first MeXN layer 4 being 1.3 μm.
The preparation method of the composite nitride coating circular saw blade comprises the following steps:
s1: the method comprises the following steps of (1) carrying out sand blasting edge passivation, ultrasonic cleaning and nitrogen drying on a cold-cutting circular saw blade with the model of 360 x 2.6 x 2.25 x 40 x 100 specification (outer diameter x tooth thickness x body thickness x inner aperture x tooth number), wherein a saw tooth tool bit is made of P25 hard alloy, a base body is made of SKS51 alloy tool steel, clamping into a furnace, heating and vacuumizing, and carrying out Ar ion etching on the surface of the cold-cutting circular saw blade through an ion source to obtain a circular saw blade base body 1;
s2: first, a first AlMeN layer 2 (Al) is produced by physical vapor deposition on a circular saw blade base body 1 0.60 Cr 0.40 N layers) and then alternately depositing second AlMeN layers 31 and second MeXN layers 32 on the first AlMeN layer 2 to form alternately deposited layers 3 (Al) 0.60 Cr 0.40 N/Ti 0.82 Si 0.18 N), adjacent second AlMeN layers 31 and second MeXN layers 32 being one alternating deposition unit with a thickness ratio gradually transitioning from 2:1 to 1:1, the alternating deposition unit having a thickness of 12nm for a total of 100 alternating deposition units, followed by deposition of a first MeXN layer 4 (Ti) on the alternating deposition layer 3 (Ti) 0.82 Si 0.18 N layers) with the thickness of 3.5 mu m, cooling to obtain a crude product of the compound nitride coating cold-cut circular saw blade;
s3: and (3) carrying out ion cleaning on the surface of the uncoated area of the circular saw blade with the composite nitride coating, then integrally coating rust-proof oil and packaging the edge plastic package to obtain a finished product of the cold-cut circular saw blade with the composite nitride coating.
Comparative example 1
The cold-cut circular saw blade of comparative example 1 was made of the same material composition as in example 1, and commercial Al was deposited by ordinary physical vapor deposition 0.60 Cr 0.40 N single-layer structure coating (each element percentage: al:30.0at.%, cr:20.0at.%, N:50.0 at.%), total coating thickness of 3.6 μm, and then the composite nitride coated cold-cut circular saw blade prepared in example 1 and the ordinary commercial Al prepared in comparative example 1 were subjected to 0.60 Cr 0.40 N single-layer structure coating cold-cutting circular saw bladeSawing comparative experiments were performed.
TABLE 1 mechanical Properties and cutting Life of the coatings of example 1 and comparative example 1
| Thickness (μm) | Hardness (GPa) | Modulus of elasticity (GPa) | Hardness/effective modulus of elasticity | Sawing life (knife) | |
| Example 1 | 3.5 | 40.4±1.2 | 461.0±23.5 | 0.094±0.06 | 261 |
| Comparative example 1 | 3.6 | 33.1±0.6 | 486.8±17.6 | 0.073±0.04 | 132 |
The sawing machine used in the sawing comparative experiment is Amada CMB-100CNC, the material to be processed is martensitic stainless steel 2Cr13 solid bar with the diameter of 60mm, the cutting parameters comprise the linear speed of a circular saw blade of 90m/min and the single-tooth feed rate of 0.06mm, the bar is cooled by using special cooling lubricating oil, and the coating performance and the sawing life of the coating of the embodiment 1 and the comparative example 1 are shown in the table 1.
Table 1 shows the coating thickness, nanoindentation hardness, elastic modulus, and ratio of hardness to effective elastic modulus (for characterizing toughness of the coating material, the larger the value, the better the toughness) of example 1 and comparative example 1. As can be seen from table 1, the nano-indentation hardness and the ratio of hardness to effective elastic modulus of example 1 showed significantly improved values relative to those of comparative example 1at similar coating thicknesses, which indicates that the composite nitride coating according to the present invention can achieve synergistic improvement of hardness and toughness. Furthermore, as can be seen from Table 1, the coated cold-cut circular saw blade of example 1 has almost the same sawing life as the ordinary commercial Al of comparative example 1 0.60 Cr 0.40 The N single-layer structure coating is 2 times that of a cold-cutting circular saw blade, and the composite nitride coating can obviously prolong the sawing life of the band saw blade.
Example 2
A compound nitride coating circular saw blade comprises a circular saw blade base body 1, wherein a compound nitride coating is deposited on the surface of the circular saw blade base body 1, the compound nitride coating comprises a first AlMeN layer 2, an alternate deposition layer 3 and a first MeXN layer 4 which are sequentially deposited from inside to outside of the circular saw blade base body, and the alternate deposition layer is formed by alternately depositing a second AlMeN layer 31 and a second MeXN layer 32; in the AlMeN layer, me is elements Ti and Cr, and the percentage of each element is as follows: 31.3at.% of Al, 10.0at.% of Ti, 8.1at.% of Cr, and 50.6at.% of N; in the MeXN layer, me is element Ti, X is element Si, and the atomic percentages of the elements are as follows: 43.0at.% Ti, 6.8at.% Si, 50.2 at N. The adjacent 1 second AlMeN layer 31 and 1 second MeXN layer 32 are 1 alternating deposition unit, the thickness of the alternating deposition unit is 10nm, and the number of the alternating deposition units is 200. The ratio of the thicknesses of the second AlMeN layer 31 and the second MeXN layer 32 of each alternating deposition unit is 1:1.
The thickness of the composite nitride coating was 4.2 μm, with the thickness of the first AlMeN layer 2 being 1.5 μm, the thickness of the alternate deposition layer 3 being 2 μm and the thickness of the first MeXN layer 4 being 1.7 μm.
The preparation method of the composite nitride cold-cutting circular saw blade comprises the following steps:
s1: carrying out sand blasting cutting edge passivation, ultrasonic cleaning and nitrogen drying on a cold-cutting circular saw blade with the model of 250 x 2.0 x 1.7 x 32 x 72 specification (outer diameter x tooth thickness x body thickness x inner aperture x tooth number) and integral M2 high-speed steel, clamping and feeding into a furnace, heating and vacuumizing, and carrying out Ar ion etching on the surface of the cold-cutting circular saw blade through an ion source to obtain a cooling circular saw blade matrix 1;
s2: first, a first AlMeN layer 2 (Al) is produced by physical vapor deposition on a cooled circular saw blade substrate 1 0.63 Ti 0.20 Cr 0.17 N layers) deposited on the first AlMeN layer 2, and depositing an alternating deposition layer 3 (Al) on the first AlMeN layer 2 0.63 Ti 0.20 Cr 0.17 N/Ti 0.82 Si 0.18 N), adjacent AlTiCrN and TiSiN layers being an alternating deposition unit with a thickness ratio of 1:1 and an alternating deposition unit thickness of 10nm for a total of 200 alternating deposition units, followed by deposition of a first MeXN layer 4 (Ti) on the alternating deposition layer 3 0.82 Si 0.18 N layers) are cooled to obtain a crude product of the cold-cut circular saw blade with the composite nitride coating;
s3: and (3) carrying out ion cleaning on the surface of the uncoated area of the cold-cutting circular saw blade with the composite nitride coating, then coating rust-proof oil on the whole and packaging the cutting edge plastic package to obtain a finished product of the cold-cutting circular saw blade with the composite nitride coating.
Comparative example 2
The cold-cut circular saw blade of comparative example 2 was fabricated in the same manner as in example 2 using ordinary physical vapor deposition of commercial Al 0.60 Cr 0.40 N single-layer structure coating with a total coating thickness of 4.5 μm, and then the composite nitride coated cold-cut circular saw blade prepared in example 2 and the common commercial Al prepared in comparative example 2 were mixed 0.60 Cr 0.40 And carrying out a sawing comparison experiment on the N single-layer structure coating cold-cutting circular saw blade.
The sawing machine used in the sawing comparative experiment is Amada CMB-100CNC, the processed material is AISI 304L stainless steel pipe, the outer diameter is 60mm, the wall thickness is 2mm, the cutting parameters include the circular saw blade linear speed is 90m/min, the single-tooth feed is 0.06mm, the special cooling lubricating oil is used for cooling, and the coating performance and the sawing life of the example 2 and the comparative example 2 are shown in table 2.
Table 2 mechanical properties and cutting life of the coatings of example 2 and comparative example 2
| Thickness (μm) | Hardness (GPa) | Modulus of elasticity (GPa) | Hardness/effective modulus of elasticity | Sawing life (knife) | |
| Example 2 | 4.2 | 44.8±0.8 | 521.4±18.3 | 0.093±0.05 | 4900 |
| Comparative example 2 | 4.5 | 33.1±0.6 | 486.8±17.6 | 0.073±0.04 | 2350 |
Example 3
A compound nitride coating circular saw blade comprises a circular saw blade base body 1, wherein a compound nitride coating is deposited on the surface of the circular saw blade base body 1, the compound nitride coating comprises a first AlMeN layer 2, an alternate deposition layer 3 and a first MeXN layer 4 which are sequentially deposited from inside to outside of the circular saw blade base body, and the alternate deposition layer is formed by alternately depositing a second AlMeN layer 31 and a second MeXN layer 32; in the AlMeN layer, me is elements Ti and Ta, and the percentage of each element is as follows: 25.8at.% Al, 15.8at.% Ti, 6.1at.% Ta, 52.3at.% N; in the MeXN layer, me is element Al and Cr, X is element B, and the atomic percentages of the elements are as follows: 29.8at.% Al, 13.8at.% Cr, 6.1at.% B, and 50.3at.% N. The adjacent 1 second AlMeN layer 31 and 1 second MeXN layer 32 are 1 alternating deposition unit, the thickness of the alternating deposition unit is 200nm, and the number of the alternating deposition units is 15. The ratio of the thicknesses of the second AlMeN layer 31 and the second MeXN layer 32 of each alternating deposition unit is 1:1.
The thickness of the composite nitride coating is 5.5 μm, wherein the thickness of the first AlMeN layer 2 is 2 μm, the thickness of the alternating deposition layer 3 is 3 μm and the thickness of the first MeXN layer 4 is 0.5 μm.
A preparation method of the compound nitride cold-cutting circular saw blade comprises the following steps:
s1: carrying out sand blasting cutting edge passivation, ultrasonic cleaning and nitrogen drying on a cold-cutting circular saw blade with the model of 250 x 2.0 x 1.7 x 32 x 72 specification (outer diameter x tooth thickness x body thickness x inner aperture x tooth number) and integral M35 high-speed steel, clamping and feeding into a furnace, heating and vacuumizing, and carrying out Ar ion etching on the surface of the cold-cutting circular saw blade through an ion source to obtain a circular saw blade matrix 1;
s2: first, a first AlMeN layer 2 (Al) is produced by physical vapor deposition on a circular saw blade base body 1 0.54 Ti 0.33 Ta 0.13 N layers) deposited on the first AlMeN layer 2, and depositing an alternating deposition layer 3 (Al) on the first AlMeN layer 2 0.54 Ti 0.33 Ta 0.13 N/Al 0.60 Cr 0.28 B 0.12 N), the adjacent AlTiTaN layer and AlCrBN layer are an alternate deposition unit with the thickness ratio of 2:1, and alternate deposition unitDeposition cell thickness 15nm, 200 alternating deposition cells, followed by deposition of a first MeXN layer 4 (Al) on the alternating deposition layer 3 0.60 Cr 0.28 B 0.12 Layer), the total thickness of the coating is 5.5 mu m, and the crude product of the cold-cut circular saw blade with the composite nitride coating is obtained after cooling;
s3: and (3) carrying out ion cleaning on the surface of the uncoated area of the cold-cutting circular saw blade with the composite nitride coating, then coating rust-proof oil on the whole and packaging the cutting edge plastic package to obtain a finished product of the cold-cutting circular saw blade with the composite nitride coating.
Comparative example 3
The cold-cut circular saw blade of comparative example 3 was made of the same material composition as in example 3, and commercial Al was deposited by ordinary physical vapor deposition 0.60 Cr 0.40 N single-layer structure coating with a total coating thickness of 5.5 μm, and then the composite nitride coated cold-cut circular saw blade prepared in example 3 and the common commercial Al prepared in comparative example 3 were mixed 0.60 Cr 0.40 And carrying out a sawing comparison experiment on the N single-layer structure coating cold-cutting circular saw blade.
The sawing machine used in the sawing comparative experiment is Amada CMB-100CNC, the processed material is AISI 316 stainless steel pipe, the outer diameter is 60mm, the wall thickness is 2mm, the cutting parameters comprise the linear speed of the circular saw blade is 90m/min, the single-tooth feed rate is 0.06mm, the special cooling lubricating oil is used for cooling, and the coating performance and the sawing life of the example 3 and the comparative example 3 are shown in table 3.
Table 3 mechanical properties and cutting life of the coatings of example 3 and comparative example 3
| Thickness (μm) | Hardness (GPa) | Modulus of elasticity (GPa) | Hardness/effective modulus of elasticity | Sawing life (knife) | |
| Example 3 | 5.5 | 42.3±0.8 | 501.8±15.3 | 0.091±0.06 | 5600 |
| Comparative example 3 | 5.5 | 33.1±0.6 | 486.8±17.6 | 0.073±0.04 | 2700 |
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A composite nitride coating circular saw blade comprises a circular saw blade base body (1), and is characterized in that a composite nitride coating is deposited on the surface of the circular saw blade base body (1), the composite nitride coating comprises a first AlMeN layer (2), an alternating deposition layer (3) and a first MeXN layer (4) which are sequentially deposited from inside to outside of the circular saw blade base body, and the alternating deposition layer is formed by alternately depositing a second AlMeN layer (31) and a second MeXN layer (32); wherein, in the AlMeN layer, me is one or more of elements Ti, ta, cr, Y, mo, nb and Zr; in the MeXN layer, me is one or more of elements Ti, al, ta, cr, Y, mo, nb and Zr, and X is one or more of elements Si and B.
2. A composite nitride coated circular saw blade as claimed in claim 1, characterised in that the thickness of the first AlMeN layer (2) is 0.5-2.5 μm, the thickness of the alternately deposited layers (3) is 0.5-4 μm and the thickness of the first MeXN layer (4) is 1-3 μm.
3. A composite nitride coated circular saw blade according to claim 1, characterised in that the thickness of the second AlMeN layer (31) is 1-100nm and the thickness of the second MeXN layer (32) is 1-100nm.
4. The composite nitride coated circular saw blade as claimed in claim 1, wherein Me in the first AlMeN layer (2) is one or more of the elements Ti, ta, cr, Y, mo, nb, zr, and the atomic percentage of Al to Me is equal to or greater than 1.0, and the content of n is 45 to 55at.%; in the second AlMeN layer (31), me is one or more of elements Ti, ta, cr, Y, mo, nb and Zr, the atomic percent of Al and Me is more than or equal to 1.0, and the content of N is 45-55 at.%.
5. The composite nitride coated circular saw blade as claimed in claim 1, characterised in that in the first MeXN layer (4), me is one or several of the elements Ti, ta, cr, Y, mo, nb, zr, the content of N being 45-55at.%; when X in the first MeXN layer (4) is the element Si, the content of Si is 1-20 at.%; when X in the first MeXN layer (4) is element B, the content of B is 1 to 20at.%; when X in the first MeXN layer (4) is the elements Si and B, the sum of the contents of Si and B does not exceed 25at.%.
6. The composite nitride coated circular saw blade as claimed in claim 1, characterised in that in the second MeXN layer (32), me is one or several of the elements Ti, ta, cr, Y, mo, nb, zr, the content of N being 45-55at.%; when X in the second MeXN layer (32) is the element Si, the content of Si is 1-20 at.%; when X in the second MeXN layer (32) is element B, the content of B is 1 to 20at.%; when X in the second MeXN layer (32) is the elements Si and B, the sum of the contents of Si and B does not exceed 25at.%.
7. The method for manufacturing a composite nitride coated circular saw blade as claimed in any one of claims 1 to 6, comprising the steps of:
s1, providing a circular saw blade matrix and carrying out pretreatment;
s2, preparing a first AlMeN layer (2) on the pretreated circular saw blade substrate through physical vapor deposition, then alternately depositing a second AlMeN layer (31) and a second MeXN layer (32) to form an alternately deposited layer (3), and then depositing a first MeXN layer (4) to obtain a crude product of the circular saw blade with the composite nitride coating;
and S3, carrying out post-treatment on the crude product of the compound nitride coating circular saw blade to obtain a finished product of the compound nitride coating circular saw blade.
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| CN109763093A (en) * | 2019-01-09 | 2019-05-17 | 纳狮新材料(浙江)有限公司 | Mechanical part and preparation method thereof with composite coating |
| CN114196912A (en) * | 2021-11-18 | 2022-03-18 | 湖南泰嘉新材料科技股份有限公司 | Periodic multilayer nano-structure nitride hard coating band saw blade and preparation method and application thereof |
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| CN105112858A (en) * | 2015-08-31 | 2015-12-02 | 科汇纳米技术（深圳）有限公司 | Nano composite cutting tool coating of multilayer structure |
| CN106282919A (en) * | 2016-08-31 | 2017-01-04 | 艾瑞森表面技术（苏州）股份有限公司 | For the composite bed of cutter and the cutter including this composite bed and preparation method thereof |
| CN109763093A (en) * | 2019-01-09 | 2019-05-17 | 纳狮新材料(浙江)有限公司 | Mechanical part and preparation method thereof with composite coating |
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