Carbon fiber dicing blade and manufacturing method thereof

Abstract

The invention discloses a manufacturing method of a carbon fiber dicing blade, which comprises the following steps: providing a material mixing layer which comprises diamond powder, a resin binder and a filler; carbon fiber nets are embedded in the material mixing layer, or the carbon fiber nets are respectively arranged on the surfaces of the two opposite sides of the material mixing layer. And performing hot pressing on the mixed material layer and the carbon fiber net to form an intermediate. And thermally curing the intermediate to obtain the carbon fiber dicing blade. According to the manufacturing method provided by the invention, the carbon fiber nets are embedded in the thickness direction of the material mixing layer or are symmetrical on the surfaces of the two sides of the material mixing layer, so that the cutting precision and the machining surface quality are improved, and the service life of the carbon fiber dicing blade is prolonged. In addition, the invention further provides the carbon fiber dicing blade.

Description

Technical Field

[0001] The present application relates to the technical field of dicing knife manufacturing, and in particular to a carbon fiber dicing knife and a manufacturing method thereof. Background Art

[0002] Generally speaking, dicing knives are widely used in the cutting process of hard and brittle materials such as semiconductors, optoelectronics, precision ceramics, glass, and silicon carbide. Traditional dicing knives are mostly made of metal matrix and glass fiber reinforcement.

[0003] However, the dicing blade made of metal matrix and glass fiber reinforced material is prone to deformation or even cracking under high load or long-term high-speed operation conditions, which not only affects the cutting accuracy but also shortens the service life of the dicing blade, making it difficult to meet the stability and reliability requirements of high-end manufacturing processes. Summary of the Invention

[0004] In view of the above, it is necessary to propose a carbon fiber dicing knife to improve the bending stiffness and structural stability of the blade.

[0005] A method for manufacturing a carbon fiber dicing knife comprises the following steps: providing a mixed layer, the mixed layer comprising diamond powder, a resin binder, and a filler; embedding a carbon fiber mesh in the mixed layer, or arranging carbon fiber meshes on two opposite surfaces of the mixed layer; hot-pressing the mixed layer and the carbon fiber mesh to form an intermediate; and thermally curing the intermediate to obtain a carbon fiber dicing knife.

[0006] In some possible embodiments, the carbon fiber mesh is a PAN-based carbon fiber warp knitted mesh or a plain mesh with an area density of 8 g / m² to 30 g / m², a single layer thickness of 0.01 mm to 0.02 mm, a resin content of 40 wt% to 60 wt%, a fiber direction of 0 / 90° staggered or ±45° staggered, and a mesh size of 0.1 mm to 0.3 mm.

[0007] In some possible embodiments, the step of "embedding a carbon fiber mesh in the mixed layer" includes: forming the mixed layer in a mold; placing the carbon fiber mesh at half the thickness of the mixed layer; pumping air under a vacuum of -0.06 MPa to -0.09 MPa to remove bubbles; and fully impregnating and bonding the carbon fiber mesh and the mixed layer under a pre-pressure of 0.5 MPa to 2 MPa.

[0008] In some possible embodiments, the step of "arranging carbon fiber meshes on opposite side surfaces of the mixture layer" includes: forming the mixture layer in a mold; laying one carbon fiber mesh on the upper surface of the mixture layer, and laying another carbon fiber mesh on the lower surface of the mixture layer, the two carbon fiber meshes are symmetrically arranged relative to the midplane in the thickness direction of the mixture layer, and the in-plane fiber arrangement of the two carbon fiber meshes is 0 / 90° staggered or ±45° staggered.

[0009] In some possible embodiments, the step of "hot pressing the mixed layer and the carbon fiber mesh to form an intermediate" includes: hot pressing at a molding temperature of 165°C to 185°C, pressurizing to 5 MPa to 15 MPa and maintaining the pressure for 5 to 10 minutes, heating at a rate of 1°C / min to 2°C / min, cooling to below 60°C and demolding.

[0010] In some possible embodiments, the step of "thermally curing the intermediate to obtain a carbon fiber dicing knife" includes: keeping the temperature at 100°C to 120°C for 0.5 hour to 1 hour, heating to 165°C to 185°C and keeping the temperature for 6 hours to 8 hours, and cooling to room temperature at a cooling rate of 1°C / min to 3°C / min.

[0011] In some possible implementations, the following steps are also included: machining the outer circle, inner hole and end face of the carbon fiber dicing knife; performing dynamic balance correction on the carbon fiber dicing knife; performing surface treatment of the outer edge area of ​​the carbon fiber dicing knife by plasma spraying a ceramic wear-resistant layer; and performing quality inspection of the density, hardness and dynamic balance of the carbon fiber dicing knife.

[0012] A carbon fiber dicing knife comprises a blade body and a carbon fiber mesh. The blade body is formed by solidifying a mixed layer, wherein the mixed layer includes diamond powder, a resin binder and a filler. The carbon fiber mesh is embedded in the middle area of ​​the blade body in the thickness direction, or the carbon fiber mesh is respectively arranged on the upper surface and the lower surface of the blade body.

[0013] In some possible implementations, the mixture includes, by mass fraction, 35-55% phenolic resin, 10-20% diamond powder, 10-25% nickel powder, 5-15% graphite, and 3-10% cryolite and / or alumina.

[0014] In some possible implementations, the total thickness of the blade body is 0.10 mm to 0.35 mm, and the diamond content in the outer edge region of the blade body is higher than the diamond content in other regions of the blade body.

[0015] In this application, by arranging the carbon fiber mesh to be embedded in the middle of the thickness direction or symmetrically arranged on both sides of the surface, combined with the dense interlayer interface formed by hot pressing and heat curing, the material properties of the carbon fiber mesh of "high strength, high modulus, low density, good thermal conductivity, heat resistance, and friction resistance" are utilized to improve the bending stiffness and structural stability of the carbon fiber dicing knife, thereby improving the cutting accuracy and processing surface quality, as well as increasing the service life of the carbon fiber dicing knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a flow chart of a method for manufacturing a carbon fiber dicing knife provided in one embodiment of the present application.

[0017] Figure 2 This is a schematic diagram of a carbon fiber mesh and a mixed material layer provided in one embodiment of the present application before being combined.

[0018] Figure 3 This is a schematic diagram of a carbon fiber mesh and a mixed material layer before being combined, provided by another embodiment of the present application.

[0019] Figure 4 A schematic cross-sectional view of a carbon fiber dicing knife provided in one embodiment of the present application.

[0020] Figure 5 A cross-sectional schematic diagram of a carbon fiber dicing knife provided in another embodiment of the present application.

[0021] Description of main component symbols Carbon fiber dicing knife: 100; mixed material layer: 10; carbon fiber mesh: 20; blade body: 30. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application.

[0023] In the description of this application, it should be understood that the terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be understood as limitations on this application. In addition, in the description of this application, it should be noted that the meaning of "plurality" is two or more, unless otherwise specifically defined.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0025] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0026] See Figure 1 The present application provides a method for manufacturing a carbon fiber dicing blade 100, comprising the steps of: S1: Provide a mixed material layer 10, comprising diamond powder, a resin binder, and a filler. The diamond powder forms the cutting edge, performs the primary grinding function, and determines the kerf width, material removal rate, and lifespan. The resin binder coats and holds the diamond powder and filler, forming a continuous phase after hot pressing / curing to provide bonding strength and thermal stability. The filler, which regulates thermal conductivity, tribological properties, holding force, and dimensional stability, specifically comprises one or more of nickel powder, graphite, cryolite, and alumina.

[0027] In some embodiments, the diamond powder has a unimodal or bimodal particle size distribution, with a median particle size (D50) of 80 to 200 μm. Nickel-plated diamond is used to enhance interfacial bonding with the resin binder. The resin binder is a phenolic resin, specifically neopentyl glycol-modified phenolic resin, with a solids content of 94 to 99 wt%. Additionally, hexamethylenetetramine (1 to 10 wt%) may be added as a curing accelerator, as needed.

[0028] Fillers include: nickel powder (D50 is 3 μm to 15 μm) to improve thermal conductivity and abrasive holding force; graphite (D50 is 3 μm to 12 μm) to reduce the friction coefficient and cutting temperature rise; cryolite (D50 is 5 μm to 20 μm) to aid grinding and remove wear chips; alumina (D50 is 1 μm to 10 μm) to improve wear resistance and compressive strength.

[0029] The weight ratio of the mixed layer 10 is: 35 wt% to 55 wt% of phenolic resin, 10 wt% to 20 wt% of diamond, 10 wt% to 25 wt% of nickel powder, 5 wt% to 15 wt% of graphite, and 3 wt% to 10 wt% of cryolite and / or alumina.

[0030] In this embodiment, step S1 includes the following sub-steps: S11: Provide raw materials and molds. Weigh diamond powder, resin binder, nickel powder, graphite, cryolite, and alumina according to the target formula; dry-sieve the particles to 200-400 mesh to remove agglomerates and foreign matter; dry the raw materials under hot air conditions at 80-100°C for 30-60 minutes to control the moisture content to ≤0.2 wt%; evenly spray or coat the mold surface with a fluorine-containing or silicone-based release agent, and pre-bake at 60-80°C for 10-20 minutes to stabilize the release agent film.

[0031] S12: Ball milling. Place the weighed raw materials in a ball mill using zirconium oxide or stainless steel grinding media, a ball-to-material ratio of 3:1 to 5:1, a rotation speed of 150 rpm to 300 rpm, and a ball milling time of 1 to 3 hours. During the ball milling process, add a resin binder and coupling agent solution (e.g., 0.3 wt% to 1.0 wt% of γ-aminopropyltriethoxysilane, calculated as resin binder) in two batches to improve interfacial bonding. After ball milling, vacuum degassing (vacuum degree of -0.06 MPa to -0.09 MPa, time of 5 to 15 minutes) is performed to obtain a uniform mixture without obvious agglomeration.

[0032] S13: Laying the mixed material layer 10. The mixed material layer 10 is laid in the mold cavity using a scraping method, a vibration compaction method, or a cold press preforming method. The filling thickness in the uncompacted state is reversed based on the target finished product thickness. When the finished product thickness is 0.10 mm to 0.35 mm, the filling thickness is preferably 0.25 mm to 0.40 mm. The mixed material layer 10 is made dense and uniform using a vibration table or light pre-pressing (0.5 MPa to 2 MPa, 30 s to 120 s), and the thickness tolerance is controlled within ±0.02 mm.

[0033] S2: embedding a carbon fiber mesh 20 in the mixed material layer 10, or placing carbon fiber meshes 20 on two opposite surfaces of the mixed material layer 10. The mixed material layer 10 is substantially in the shape of a disk.

[0034] In some embodiments, the carbon fiber mesh 20 is a polyacrylonitrile-based warp knitted mesh (PAN-based warp knitted mesh) or a plain mesh with an area density of 8 g / m² to 30 g / m², a single layer thickness of 0.01 mm to 0.02 mm, a resin content of 40 wt% to 60 wt%, a fiber direction of 0 / 90° staggered or ±45° staggered, and a mesh size of 0.1 mm to 0.3 mm.

[0035] The term "0 / 90° or ±45° staggered fiber orientation" refers to the arrangement of the primary yarns (warp / weft or unidirectional strands) of the carbon fiber mesh in alternating pairs relative to a reference direction defining the composite layer 10. The reference direction is defined as: 0° in the tangential direction of the composite layer 10 and 90° in the radial direction of the composite layer 10. A 0 / 90° staggered fiber orientation means one layer of fibers is laid tangentially (0°) while the adjacent layer is laid radially (90°). A ±45° staggered fiber orientation means one layer of fibers is laid with a +45° offset relative to the tangential direction while the adjacent layer is laid with a -45° offset relative to the tangential direction, with an equal number of +45° and -45° offsets.

[0036] The 0 / 90° staggering increases the in-plane stiffness in both the tangential and radial directions, making it more conducive to bearing the circumferential tensile stress and radial load generated by high-speed rotation, reducing the flexural deformation of the outer edge working zone, and helping to improve bending stiffness, end jump stability and cutting seam straightness, making it suitable for high-speed and high-precision scribing conditions.

[0037] The ±45° staggering focuses on enhancing the in-plane shear stiffness and energy dissipation capacity, and exhibits better impact resistance and crack propagation resistance under the shearing action caused by cutting torque and uneven feed; the fibers are obliquely related to the potential crack propagation direction, which is beneficial to crack deflection and blunting, and at the same time, the vibration and noise are more significantly suppressed, making it suitable for intermittent cutting, thermal shock and shear-dominated working conditions.

[0038] See Figure 2 In a specific embodiment, after the mixed layer 10 is formed in the mold, a first carbon fiber mesh 20 is laid on the upper surface of the mixed layer 10, and a second carbon fiber mesh 20 is laid on the lower surface of the mixed layer 10. The first carbon fiber mesh 20 and the second carbon fiber mesh 20 are symmetrically arranged relative to the midplane in the thickness direction of the mixed layer 10; the first carbon fiber mesh 20 and the second carbon fiber mesh 20 both adopt the above-mentioned specifications, and the in-plane arrangement is 0 / 90° staggered or ±45° staggered.

[0039] See Figure 3 In another embodiment, a single layer of carbon fiber mesh 20 is embedded at a position halfway along the thickness direction of the mixed material layer 10. That is, the carbon fiber mesh 20 is located in the middle of the mixed material layer 10.

[0040] In order to reduce the entrained bubbles and ensure the wettability, vacuum extraction (-0.06 MPa to -0.09 MPa, 30 s to 120 s) and 0.5 MPa to 2 MPa pre-pressing can be performed after laying the carbon fiber mesh 20 to ensure that the carbon fiber mesh 20 and the mixed material layer 10 are fully bonded.

[0041] In another embodiment, a layer of carbon fiber mesh 20 is disposed at one-third of the thickness of the mixed layer 10, and another layer of carbon fiber mesh 20 is disposed at two-thirds of the thickness. The spacing between the two layers of carbon fiber mesh 20 is 0.02 mm to 0.08 mm, and the arrangement angle is 0 / 90° staggered or ±45° staggered.

[0042] S3: Hot pressing the mixed material layer 10 and the carbon fiber mesh 20 to form an intermediate.

[0043] In some embodiments, the molding temperature is 165°C to 185°C, the pressure is 5 MPa to 15 MPa, and the holding time is 5 to 10 minutes. The temperature control accuracy is ±2°C, and the heating rate is 1°C / min to 2°C / min. After hot pressing, the mold is cooled to below 60°C for demolding. The hot pressing equipment is a MY-63T hot press or equivalent. In addition, to prevent foaming and resin migration, one or two exhaust cycles may be performed during the heating phase.

[0044] S4: thermally curing the intermediate to obtain the carbon fiber dicing blade 100 .

[0045] In some embodiments, the pre-curing step is completed by maintaining the temperature at 100°C to 120°C for 0.5 to 1 hour, then raising the temperature to 165°C to 185°C for 6 to 8 hours to achieve complete crosslinking. Finally, the temperature is lowered to room temperature at a rate of 1°C / min to 3°C / min. To control warpage and end jump, a metal flat clamp is used for clamping and limiting during the thermal curing process.

[0046] During the thermal curing process, the resin binder is pre-cured at 100°C to 120°C and then kept at 165°C to 185°C for 6 to 8 hours to complete the cross-linking reaction, forming a dense and continuous resin matrix and stably embedding the diamond powder and filler, thereby forming the blade body 30 of the carbon fiber dicing knife 100 (see Figure 4 and Figure 5 The carbon fiber mesh 20 and the blade body 30 are integrally connected through chemical bonding formed by resin matrix infiltration and cross-linking curing, as well as mechanical bite produced by compaction. They are symmetrically arranged along the thickness direction or embedded in the middle to improve bending stiffness, interlaminar shear strength, crack resistance, and vibration reduction performance.

[0047] In the present application, the manufacturing method of the carbon fiber dicing knife 100 further includes the following steps: S5: Perform mechanical finishing on the outer circle, inner hole and end face of the carbon fiber dicing blade 100.

[0048] Diamond dressing tools or high-precision grinding equipment are used to fine-process the outer circle, end face and center hole; the outer edge working zone can be trimmed twice as needed to form a small chamfer to reduce the probability of edge collapse.

[0049] S6: Dynamic balancing, surface treatment, and quality inspection are performed on the carbon fiber dicing blade 100. The outer edge is plasma-sprayed with a ceramic wear-resistant layer or physically vapor-deposited to improve wear resistance and heat dissipation. Density, hardness, porosity, and interlaminar shear strength are tested. Dynamic balancing, end runout, thickness consistency, and kerf width consistency are also inspected.

[0050] Compared with the prior art, the manufacturing method of the carbon fiber dicing blade 100 provided in this application has the following advantages: (1) Manufacturing Method: By placing a carbon fiber mesh 20 embedded in the middle of the thickness direction or symmetrically arranged on both sides, combined with hot pressing and heat curing to form a dense interlayer interface, the material properties of the carbon fiber mesh 20, namely "high strength, high modulus, low density, good thermal conductivity, heat resistance, and friction resistance," are utilized to improve the bending stiffness and structural stability of the blade. Based on acoustic damping data, the acoustic vibration attenuation loss factor of carbon fiber is 0.024+0.008, while the loss factor of conventional metal materials is 0.0001-0.0002. This significantly reduces vibration and noise during high-speed rotation and high-load processing, making the cutting force more evenly distributed, thereby improving cutting accuracy and processed surface quality.

[0051] (2) The manufacturing method reduces wear and temperature rise in the cutting zone, extends service life and stabilizes the cutting kerf by increasing the diamond content in the outer edge working zone, using nickel powder to enhance thermal conductivity and abrasive grain holding, graphite to provide solid lubrication, cryolite and alumina to assist grinding and stabilize shape, and a dense resin matrix to effectively embed and expose the abrasive grains.

[0052] (3) The manufacturing method utilizes symmetrical layering or neutral layer embedding to reduce residual stress and warping risk. Vacuum degassing and pre-press impregnation reduce air bubble entrapment and enhance interlaminar shear strength. Staged thermal curing achieves resin crosslinking and stabilizes geometric dimensions. Low-density carbon fiber reduces centrifugal loads. This ensures dynamic stability and dimensional accuracy of the blade body 30 under various operating conditions, including continuous and intermittent cutting, reducing the risk of cracking and deformation and reducing maintenance and replacement frequency.

[0053] See Figure 4 and Figure 5 An embodiment of the present application also provides a carbon fiber dicing knife 100, which includes a blade body 30 and a carbon fiber mesh 20. The blade body 30 is formed by solidifying a mixture, and the mixture includes diamond powder, resin binder and filler; the carbon fiber mesh 20 is buried in the middle area of ​​the blade body 30 in the thickness direction, or the carbon fiber mesh 20 is respectively arranged on the upper surface and the lower surface of the blade body 30.

[0054] In some embodiments, the composite matrix of the insert body 30 comprises phenolic resin 35 wt% to 55 wt%, diamond 10 wt% to 20 wt%, nickel powder 10 wt% to 25 wt%, graphite 5 wt% to 15 wt%, ice crystal and / or aluminum oxide 3 wt% to 10 wt%; the total thickness of the insert body 30 is 0.10 mm to 0.35 mm; the diamond content of the outer edge area of the insert body 30 is higher than that of the middle area of the insert body 30.

[0055] In some embodiments, the outer edge of the carbon fiber web 20 is flush with the outer edge of the insert body 30. In this way, the outer circle is formed by the resin-diamond composite layer and the carbon fiber web 20 together, and the outer circle does not form a stepped transition, the edge stress concentration and the risk of interlayer seepage peeling are reduced; the outer circle finishing, dynamic balance and end jump control are more consistent, the stability of the kerf width and the outer edge roundness is guaranteed, and resin sealing or thin ceramic coating can be implemented at the outer circle to improve the wear resistance and moisture resistance.

[0056] In other embodiments, the outer edge of the insert body 30 protrudes beyond the outer edge of the carbon fiber web 20. In this way, the carbon fiber end is retreated to the non-working area, the grinding contact is directly borne by the resin-diamond composite layer, and the carbon fiber end is not directly exposed to the cutting interface, the probability of carbon fiber end burr, fiber breakage and delamination is reduced; the outer edge can be arranged with a diamond-rich zone and a heat-conducting filler to improve the cutting sharpness, heat dissipation capacity and wear resistance, and is suitable for high-speed, dry grinding or intermittent cutting conditions that require higher integrity of the outer edge.

[0057] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A method for manufacturing a carbon fiber dicing knife, characterized in that: The following steps are involved: Providing a mixed material layer, the mixed material layer comprising diamond powder, a resin binder and a filler; A carbon fiber mesh is embedded in the mixed material layer, or a carbon fiber mesh is respectively provided on two opposite surfaces of the mixed material layer; hot pressing the mixed material layer and the carbon fiber mesh to form an intermediate; The intermediate is thermally cured to obtain a carbon fiber dicing blade.

2. The manufacturing method according to claim 1, wherein The carbon fiber mesh is a PAN-based carbon fiber warp knitted mesh or a plain mesh, with an area density of 8 g / m² to 30 g / m², a single layer thickness of 0.01 mm to 0.02 mm, a resin mass fraction of 40%-60%, a fiber direction of 0 / 90° staggered or ±45° staggered, and a mesh size of 0.1 mm to 0.3 mm.

3. The manufacturing method according to claim 1, wherein The step of "embedding a carbon fiber mesh in the mixed material layer" includes: forming the mixed material layer in the mold; Placing the carbon fiber mesh at half the thickness of the mixed layer; Pump down to -0.06 MPa to -0.09 MPa vacuum to remove air bubbles; Under a pre-pressure of 0.5 MPa to 2 MPa, the carbon fiber mesh and the mixed material layer are fully impregnated and bonded.

4. The manufacturing method according to claim 1, wherein: The step of "arranging carbon fiber meshes on opposite sides of the mixed layer" includes: forming the mixed material layer in the mold; Laying the carbon fiber mesh on the upper surface of the mixed material layer; Another carbon fiber mesh is laid on the lower surface of the mixed layer. The two carbon fiber meshes are symmetrically arranged relative to the midplane of the mixed layer in the thickness direction. The in-plane fiber arrangement of the two carbon fiber meshes is 0 / 90° staggered or ±45° staggered.

5. The manufacturing method according to claim 1, wherein: The step of "hot pressing the mixed layer and the carbon fiber mesh to form an intermediate" includes: Hot pressing is performed at a molding temperature of 165°C to 185°C, the pressure is increased to 5 MPa to 15 MPa and the pressure is maintained for 5 to 10 minutes, the heating rate is 1°C / min to 2°C / min, and the mold is demolded after cooling to below 60°C.

6. The manufacturing method according to claim 1, wherein: The step of "thermally curing the intermediate to obtain a carbon fiber dicing blade" includes: Keep warm at 100°C to 120°C for 0.5 to 1 hour; Raise the temperature to 165°C to 185°C and keep warm for 6 to 8 hours; Cool to room temperature at a cooling rate of 1°C / min to 3°C / min.

7. The manufacturing method according to claim 1, wherein: The following steps are also included: Mechanically processing the outer circle, inner hole and end face of the carbon fiber dicing knife; Performing dynamic balance correction on the carbon fiber dicing knife; Performing a surface treatment of plasma spraying a ceramic wear-resistant layer on the outer edge area of ​​the carbon fiber dicing blade; and The carbon fiber dicing knife is subjected to quality inspections of density, hardness and dynamic balance.

8. A carbon fiber dicing knife, characterized in that: It includes a blade body and a carbon fiber mesh. The blade body is formed by solidifying a mixed layer, and the mixed layer includes diamond powder, resin binder and filler; the carbon fiber mesh is buried in the middle area of ​​the blade body in the thickness direction, or the carbon fiber mesh is respectively arranged on the upper surface and lower surface of the blade body.

9. The carbon fiber dicing knife according to claim 8, wherein: Calculated by mass fraction, the mixed material layer includes 35-55% phenolic resin, 10-20% diamond powder, 10-25% nickel powder, 5-15% graphite, and 3-10% cryolite and / or aluminum oxide.

10. The carbon fiber dicing knife according to claim 8, wherein: The total thickness of the blade body is 0.10 mm to 0.35 mm, and the diamond content in the outer edge area of ​​the blade body is higher than the diamond content in other areas of the blade body.

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