CN111531189A - Special surface texture cutting tool for nickel-based alloy - Google Patents
Special surface texture cutting tool for nickel-based alloy Download PDFInfo
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- CN111531189A CN111531189A CN202010255353.1A CN202010255353A CN111531189A CN 111531189 A CN111531189 A CN 111531189A CN 202010255353 A CN202010255353 A CN 202010255353A CN 111531189 A CN111531189 A CN 111531189A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 88
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 19
- 239000000956 alloy Substances 0.000 title claims abstract description 19
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 17
- 238000003754 machining Methods 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 208000035874 Excoriation Diseases 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 6
- 229910000601 superalloy Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000007514 turning Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000002173 cutting fluid Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007516 diamond turning Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/005—Geometry of the chip-forming or the clearance planes, e.g. tool angles
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- Physics & Mathematics (AREA)
- Geometry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention relates to a special surface texture cutting tool for nickel-based alloy, which comprises a front tool face, a main rear tool face and an auxiliary rear tool face, wherein the front tool face and the main rear tool face are intersected to form a main cutting edge, the front tool face and the auxiliary rear tool face are intersected to form an auxiliary cutting edge, and the front tool face and the auxiliary rear tool face are respectively provided with a first texture and a second texture with micron-sized appearances through a surface texture technology. According to the special surface texture cutting tool for the nickel-based alloy, the texture combination on the front tool face and the auxiliary rear tool face reduces the cutting temperature of the tool and the machining friction force of the tool compared with the existing non-texture tool under the same working condition; when the same workpiece is machined, compared with the existing non-texture cutter, the wear speed is low, and the service life of the cutter can be effectively prolonged.
Description
Technical Field
The invention relates to nickel-based high-temperature alloy finish machining, in particular to a special surface texture cutting tool for nickel-based alloys.
Background
The nickel-base superalloy GH4169 is a nickel-base superalloy precipitation strengthened with body-centered tetragonal γ 'and face-centered cubic γ' phases. Its physical properties are high hardness, high strength, high corrosion resistance and high temp. The alloy has poor processability and excellent service performance, has good comprehensive performance within the temperature range of-253 ℃ to 700 ℃, has good fatigue resistance, radiation resistance, oxidation resistance and corrosion resistance at the yield strength of below 650 ℃, can be used for manufacturing parts with various complex shapes, and is widely applied within the temperature range in aerospace, nuclear energy and petroleum industries.
When the nickel-based high-temperature alloy is turned, the problems of large cutting force, high cutting temperature and severe work hardening often occur; the cutting force is large, and the fluctuation condition is obvious; the method has the disadvantages of serious chip curling, difficult chip breaking and the like, and is not beneficial to the processing of the nickel-base superalloy.
Disclosure of Invention
The invention provides a special surface texture cutting tool for a nickel-based alloy, aiming at solving the problems of high cutting temperature and the like in the processing of the nickel-based superalloy in the prior art.
The special surface texture cutting tool for the nickel-based alloy comprises a front tool face, a main rear tool face and an auxiliary rear tool face, wherein the front tool face, the main rear tool face and the auxiliary rear tool face are intersected to form a main cutting edge, the front tool face and the auxiliary rear tool face are intersected to form an auxiliary cutting edge, and the front tool face and the auxiliary rear tool face are respectively formed with a first texture and a second texture with micron-scale appearances through a surface texture technology.
Preferably, the first texture is a groove-shaped linear microtexture and comprises 5-10 first grooves which are equidistantly distributed, the spacing between every two adjacent first grooves is 50-70 μm, and the width of each first groove is 15-25 μm.
Preferably, each first groove is at an angle of between 0 ° and 135 ° to the main cutting edge.
Preferably, each first groove is parallel to each other.
Preferably, the length of each first groove is between 0.5mm and 0.7 mm.
Preferably, the rake face has a double-sided chip breaker groove thereon, and the first texture overlaps the double-sided chip breaker groove.
Preferably, the second texture is a groove-shaped linear microtexture and comprises 4-8 second grooves which are distributed at equal intervals, the spacing between every two adjacent second grooves is 65-75 μm, and the width of each second groove is 25-35 μm.
Preferably, each second groove is parallel to the minor cutting edge.
Preferably, the length of each second groove is between 0.3mm and 0.5 mm.
Preferably, the first texture and the second texture are formed by picosecond laser scanning.
In a word, according to the special surface texture cutting tool for the nickel-based alloy, compared with the existing non-texture cutting tool under the same working condition, the cutting temperature of the tool is reduced and the machining friction force of the tool is reduced through the texture combination on the front tool face and the auxiliary rear tool face; when the same workpiece is machined, compared with the existing non-texture cutter, the wear speed is low, and the service life of the cutter can be effectively prolonged.
Drawings
FIG. 1 is a schematic diagram of the overall construction of a nickel-based alloy specialized surface texture cutting tool according to a preferred embodiment of the present invention;
FIG. 2 is an enlarged view of the first texture of FIG. 1;
FIG. 3 is an enlarged view of the second texture of FIG. 1;
fig. 4 shows the variation of the texture width of the first texture;
fig. 5 shows a variation in texture pitch for the first texture;
fig. 6 shows the variation of the texture angle of the first texture;
FIG. 7A is a temperature cloud of a non-textured tool;
FIG. 7B is a temperature cloud of a tool having a first texture;
fig. 8 shows the variation of the texture pitch of the second texture;
fig. 9 shows the variation of the texture width of the second texture.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a surface texture cutting tool specially for nickel-based alloys according to a preferred embodiment of the present invention includes a turning tool insert substrate including a rake face 1, a major flank face 2 and a minor flank face 3 intersecting at a tip 10, wherein the rake face 1 and the major flank face 2 intersect to form a major cutting edge 11, the rake face 1 and the minor flank face 3 intersect to form a minor cutting edge 12, and the major cutting edge 11 and the minor cutting edge 12 also intersect at the tip 10. In particular, the rake face 1 and the minor relief face 3 are respectively formed with a first texture 1A and a second texture 3A of a micron-scale topography of a non-smooth morphology by a surface texturing technique. The Surface texture (Surface texture) technique is to artificially process a certain regular distribution of geometric features on the Surface of a friction pair by physical, chemical and mechanical methods. Due to the first texture 1A and the second texture 3A on the surface of the turning tool blade substrate, the friction condition and the lubricating oil flowing state between the cutting chips and the cutting tool are changed by the cutting, the stress condition in the cutting process is improved, the temperature in the cutting process is reduced, the abrasion of the blade is reduced, and the service life is prolonged. In addition, in a machining environment with cutting fluid, the first texture 1A and the second texture 3A are beneficial to storing part of the cutting fluid, so that the lubricating and cooling efficiency is improved, and the heat dissipation and cutting capacity of the cutter are improved. In this embodiment, the turning tool insert substrate is an 80 ° cemented carbide diamond turning tool insert of a standard C-type cylindrical turning tool CNMG190608-DM, and the first texture 1A and the second texture 3A are formed by picosecond laser scanning.
The first texture 1A is a groove-shaped linear microtexture, and comprises 5 to 10 grooves which are equidistantly distributed, each groove is parallel to the main cutting edge 11, as shown in fig. 2, the distance between adjacent grooves is S1, the width of each groove is W1, and the length of each groove is about L1. In this example, the first texture 1A includes seven grooves, S1 is 60 μm, W1 is 20 μm, and L1 is 0.6 mm. Returning to fig. 1, the rake face 1 has a double-sided chip breaker 21 thereon, and the first texture 1A overlaps the double-sided chip breaker 21. In particular, the first texture 1A parallel to the main cutting edge 11 may provide a chip-breaking effect, which also helps to reduce the contact area between the chip and the chip, evenly distribute the stress and temperature distribution on the rake face 1, and achieve the effects of reducing wear and improving durability.
The second texture 3A is a groove-shaped linear microtexture, which includes 4-8 grooves distributed at equal intervals, each groove is parallel to the secondary cutting edge 12, as shown in fig. 3, the distance between adjacent grooves is S2, the width of each groove is W2, and the length of each groove is about L2. In this example, the second texture 3A includes seven grooves, S2 is 70 μm, W2 is 30 μm, and L2 is 0.4 mm. In particular, the second texture 3A parallel to the secondary cutting edge 12 enlarges the heat dissipation area of the heat accumulation part of the tip 10 and improves the distribution of the stress and temperature of the tool near the secondary flank 3 during the extrusion process of the base body and the cut surface of the turning tool insert.
The experimental processed material was cylindrical ni-based superalloy GH4169 with Φ 100mm × 300mm, the elemental composition of the material is shown in table 1, and the dimensions and physical properties of the workpiece are shown in table 2.
TABLE 1 experimental GH4169 alloy elements
| Element name | Ni | Al | C | Co | Cr | Cu | Fe | Mn | Mo | P | S | Si | Ti |
| Ratio (%) | 55 | 0.2 | 0.08 | 1.0 | 17.0 | 0.3 | 17.0 | 0.35 | 2.8 | 0.02 | 0.02 | 0.35 | 0.65 |
TABLE 2 experimental GH4169 alloy size and physical Properties
| Alloy brand | Determination of hardness | Diameter of workpiece | Length of work | Modulus of elasticity | Shear modulus | Poisson ratio |
| GH4169 | 201HV | 100mm | 300mm | 200GPa | 77.2GPa | 0.3 |
The overall experiment consisted of two major components: firstly, measuring three-dimensional stress conditions of different cutters by using a dynamometer at a stable rotating speed; and secondly, measuring the service lives of different cutters, wherein the failure of the cutters is judged by whether the maximum abrasion loss of the rear cutter face reaches a failure standard or not. In the whole experiment process, in order to ensure the safety of instruments and equipment and the cutting process to be close to the actual processing situation, no cooling liquid or lubricating liquid is set, the cutting speed is controlled to be 150.8m/min, the back cutting depth is 0.1mm, and the feeding quantity is 0.15 mm.
In the experiment, a 9257B type three-way piezoelectric dynamometer is used for measuring the cutting force in the machining process and is installed in the machining process of a lathe. Experiments the cutting force was measured with constant cutting speed. After the piezoelectric dynamometer senses the pressure of the lathe blade, the cutting force is displayed on the display according to the periodical change through the processing of the signal amplifier and the data collector. After the cutting force variation rule is relatively stable, the average stress of a period of time is obtained.
According to modern tribological theory, the wear process can generally be divided into three phases: a running-in phase, a steady wear phase and a severe wear phase. And determining that the cutter enters a severe abrasion stage when the abrasion loss of the rear cutter face exceeds 0.3mm according to the cutter failure standard in the cutting process and the judgment of an experimental curve per se. In the severe abrasion stage of the cutter, the cutting temperature rises, the abrasion is serious, and the cutting performance of the cutter is greatly influenced. Therefore, the experiment determines that the cutting length from the beginning of cutting to the severe abrasion section, namely before the maximum abrasion of the rear cutter surface of the cutter reaches 0.3mm, is the cutting life of the cutter.
Cutting experiments show that the cutting resultant force of the non-texture cutter is 298.8N, and the total length of the machined tool before failure is 62.83 m. When the textured tool of this example was used, the total cutting force improved to 211.6N and the average pre-failure machined length was about 104.72 m. Therefore, the texture cutter greatly reduces the cutting force and can effectively prolong the service life of the cutter.
Example 1
A groove-like first texture parallel to the main cutting edge is established on the rake face. As shown in fig. 4, the texture width is preferably between 15 μm and 25 μm; as shown in fig. 5, the texture pitch is between 50 μm and 70 μm; as shown in fig. 6, the texture angle (the angle between the texture direction and the main cutting edge) is between 0 ° and 135 °. The groove-shaped texture antifriction cooling effect with the texture width of 20 mu m, the texture interval of 60 mu m and the texture angle of 0 degrees has excellent performance in all parameters, the cutting resultant force of the cutter is 552N, the maximum cutting temperature is 669 ℃, and the friction reduction effect is respectively reduced by 22.5 percent and 20.8 percent compared with the case without the texture. Fig. 7A is a temperature cloud for a non-textured tool and fig. 7B is a temperature cloud for a tool with a first texture, showing that the typical high temperature hot spot area is concentrated within about 400 μm of the cutting edge, 0.3 to 0.6mm from the tip in the direction of the cutting edge. In order to reduce the cost of texturing, the first texture may be provided in this portion, whereby the appropriate track number and length are selected.
Example 2
A groove-like second texture parallel to the secondary cutting edge is established at the secondary relief surface. As shown in fig. 8, the texture pitch is preferably between 65 μm and 75 μm; as shown in fig. 9, the texture width is preferably between 25 μm and 35 μm. The groove-shaped texture antifriction cooling effect with the texture pitch of 70 mu m and the texture width of 30 mu m is excellent in all parameters, the cutting resultant force of the cutter is 680N, the maximum cutting temperature is 793 ℃, and the friction coefficient is respectively reduced by 4.6% and 6.2% compared with the case without the texture.
Example 3
When the high-temperature nickel-based alloy Inconel 718HS is cut, the cutting resultant force of the non-textured cutter is 713N, and the maximum cutting temperature is 845 ℃. A groove-shaped texture which is parallel to the main cutting edge, has the texture interval of 60 mu m and the texture width of 20 mu m is established on the front cutter surface; the secondary flank establishes a groove-like texture parallel to the secondary cutting edge with a texture pitch of 70 μm and a texture width of 30 μm. Obtaining the resultant force of the forces in the X and Z directions
The cutting temperature is 551N, the maximum cutting temperature is 662 ℃, and the reduction is 22.7 percent and 21.6 percent respectively in the same ratio.
Obviously, when the special surface texture cutting tool for the nickel-based alloy is used for cutting the nickel-based superalloy, the cutting temperature can be reduced, the cutting friction force can be reduced, the tool abrasion speed can be slowed down, and the service life of the tool can be effectively prolonged.
The above embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and various changes may be made in the above embodiments of the present invention. All simple and equivalent changes and modifications made according to the claims and the content of the specification of the present application fall within the scope of the claims of the present patent application. The invention has not been described in detail in order to avoid obscuring the invention.
Claims (10)
1. A special surface texture cutting tool for nickel-based alloy comprises a front tool face, a main rear tool face and an auxiliary rear tool face, wherein the front tool face and the main rear tool face are intersected to form a main cutting edge, and the front tool face and the auxiliary rear tool face are intersected to form an auxiliary cutting edge.
2. The surface texture cutting tool of claim 1, wherein the first texture is a groove-like linear microtexture comprising 5-10 equally spaced first grooves, the spacing between adjacent first grooves is 50-70 μm, and the width of each first groove is 15-25 μm.
3. The surface texture cutting tool of claim 2, wherein each first groove is angled between 0 ° and 135 ° from the major cutting edge.
4. The surface texture cutting tool of claim 2 wherein each of the first grooves are parallel to each other.
5. The surface texture cutting tool of claim 2, wherein the length of each first groove is between 0.5mm and 0.7 mm.
6. The surface texture cutting tool of claim 1 wherein the rake surface has a double-sided chip breaker groove thereon, the first texture overlapping the double-sided chip breaker groove.
7. The surface texture cutting tool of claim 1, wherein the second texture is a groove-like linear microtexture comprising 4-8 equally spaced second grooves, the spacing between adjacent second grooves is 65-75 μm, and the width of each second groove is 25-35 μm.
8. The surface texture cutting tool of claim 7, wherein each second groove is parallel to the secondary cutting edge.
9. The surface texture cutting tool of claim 7, wherein the length of each second groove is between 0.3mm and 0.5 mm.
10. The surface texture cutting tool of claim 1 wherein the first texture and the second texture are formed by picosecond laser scanning.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010255353.1A CN111531189A (en) | 2020-04-02 | 2020-04-02 | Special surface texture cutting tool for nickel-based alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010255353.1A CN111531189A (en) | 2020-04-02 | 2020-04-02 | Special surface texture cutting tool for nickel-based alloy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182575A (en) * | 2021-05-11 | 2021-07-30 | 哈尔滨理工大学 | Heat-resistant anti-friction high-strength milling cutter blade for heavy cutting |
| CN113695609A (en) * | 2021-08-23 | 2021-11-26 | 上海应用技术大学 | Cutter with adjustable micro texture |
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| WO2019176202A1 (en) * | 2018-03-16 | 2019-09-19 | 住友電工ハードメタル株式会社 | Surface coated cutting tool and manufacturing method for same |
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2020
- 2020-04-02 CN CN202010255353.1A patent/CN111531189A/en active Pending
Patent Citations (7)
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|---|---|---|---|---|
| CN104999182A (en) * | 2015-07-09 | 2015-10-28 | 江苏科技大学 | Machining device and machining method for surface micro-texture of high-speed steel cutting tool |
| CN107138752A (en) * | 2017-07-04 | 2017-09-08 | 贵州大学 | A kind of coated carbides rake face comb teeth shape microflute lathe tool of cutting 40CrMnMo |
| WO2019176202A1 (en) * | 2018-03-16 | 2019-09-19 | 住友電工ハードメタル株式会社 | Surface coated cutting tool and manufacturing method for same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182575A (en) * | 2021-05-11 | 2021-07-30 | 哈尔滨理工大学 | Heat-resistant anti-friction high-strength milling cutter blade for heavy cutting |
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| CN113695609A (en) * | 2021-08-23 | 2021-11-26 | 上海应用技术大学 | Cutter with adjustable micro texture |
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Application publication date: 20200814 |