Manufacturing method of diamond blade suitable for cutting inductor and diamond blade
By composite electroplated nickel base and diamond particles on an aluminum alloy substrate, the problem of core breakage when cutting composite inductors with traditional cutters is solved, and the uniform distribution of diamond blades and efficient cutting effects are achieved.
Patent Information
- Application Number
- CN202511027041.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-23
- Publication Date
- 2025-10-17
AI Technical Summary
In the prior art, when traditional cutters cut composite inductors, mechanical stress is easily transferred to the brittle core part, causing the core to crack or separate between layers, making it difficult to ensure cutting quality.
Based on an aluminum alloy substrate, a nickel base layer and a cutting layer embedded with diamond particles are deposited through composite electroplating. Combined with a high- and low-speed alternating rotation electroplating process, the diamond particles are ensured to be evenly distributed in the nickel base layer, forming a diamond blade suitable for cutting inductors.
The quality of cutting inductors is improved, the problem of edge collapse of inductors is reduced, the uniformity and wear resistance of the cutting layer are ensured, and the cutting efficiency and accuracy are improved.
Smart Images
Figure CN120791355A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of dicing blade manufacturing, and particularly relates to a manufacturing method of a diamond blade suitable for cutting inductors and the diamond blade. BACKGROUND
[0002] In the field of electronic component manufacturing, especially in the precise dicing and cutting of composite inductors (usually containing multiple layers of heterogeneous materials such as insulating layers, copper foil coils and magnetic cores), diamond dicing blades are key processing tools. In the prior art, traditional metal-based or resin-based hard alloy element cutters are often used for such cutting operations.
[0003] However, due to the differences in physical properties (such as hardness, toughness, and thermal expansion coefficient) between the composite inductor material (especially the brittle magnetic core) and the copper foil and insulating layer, the mechanical stress applied by the traditional cutter during high-speed cutting is easily transmitted to the brittle magnetic core, causing the magnetic core to break or separate between layers. SUMMARY
[0004] In view of the above, it is necessary to propose a manufacturing method of a diamond blade suitable for cutting inductors and the diamond blade to improve the cutting quality of the diamond blade on inductors.
[0005] A manufacturing method of a diamond blade suitable for cutting inductors, comprising the steps of: providing an aluminum alloy base; depositing a cutting layer on the aluminum alloy base, the cutting layer comprising a nickel-based layer and diamond particles embedded in the nickel-based layer; and processing the cutting layer to form a plurality of grooves distributed along the radial direction to obtain the diamond blade, wherein the cutting layer comprises, by mass fraction, 75-90% nickel, 5-10% cobalt, and 5-15% diamond, and the cutting layer is deposited on the aluminum alloy base by composite electroplating, and during the composite electroplating process, the aluminum alloy base rotates relative to the electroplating solution.
[0006] In some possible embodiments, the composite electroplating process comprises the steps of: loading the aluminum alloy base into a rotating electroplating support connected to an electroplating cathode; immersing the rotating electroplating support in an electroplating solution comprising nickel ions and diamond particles; and rotating the rotating electroplating support and starting electroplating.
[0007] In some possible embodiments, the electroplating solution comprises nickel sulfamate, cobalt sulfamate, nickel chloride, boric acid, sodium dodecyl sulfate, sodium benzaldehyde-2,4-disulfonate, and diphenylsulfonylpropylamine.
[0008] In some possible implementation manners, the concentration of the nickel sulfamate is 300-500 g / L, the concentration of the cobalt sulfamate is 25-50 g / L, the concentration of the nickel chloride is 10-20 g / L, the concentration of the boric acid is 35-50 g / L, the concentration of the sodium dodecyl sulfate is 0.02-1 g / L, the concentration of the sodium benzaldehyde-2,4-disulfonate is 5-30 g / L, and the concentration of the diphenylsulfone propylamine is 0.2-1 g / L.
[0009] In some possible implementation manners, the step of rotating the rotating electroplating support includes: rotating the rotating electroplating support at 200-300 revolutions per minute for 5-15 seconds, and then switching to rotating the rotating electroplating support at 30-50 revolutions per minute for 30-40 seconds, and repeating 200-300 times.
[0010] In some possible implementation manners, the step of depositing the cutting layer on the aluminum alloy base includes: removing oil stains on the surface of the aluminum alloy base by using an ultrasonic cleaning machine; removing an oxide layer on the surface of the aluminum alloy base by alkaline etching or acid etching; and forming a zinc layer on the surface of the aluminum alloy base by zinc immersion, the zinc layer being used to improve the bonding force between the cutting layer and the aluminum alloy base.
[0011] In some possible implementation manners, the step of depositing the cutting layer on the aluminum alloy base includes: cutting the cutting layer to form a plurality of grooves distributed in a radial direction on the cutting layer.
[0012] In some possible implementation manners, the aluminum alloy base includes a main body portion and a support portion protruding from the periphery of the main body portion, and the cutting layer is formed on the support portion, and the step of depositing the cutting layer on the aluminum alloy base further includes: etching and removing the support portion so that the cutting layer is exposed.
[0013] A diamond blade manufactured by the above method for manufacturing a diamond blade suitable for cutting an inductor, comprising: an aluminum alloy base and a cutting layer. The aluminum alloy base includes a first surface, a second surface, and a connecting surface. The first surface and the second surface are oppositely and spacedly arranged, and the connecting surface is connected between the first surface and the second surface, and the first surface protrudes from the second surface. The cutting layer protrudes from the first surface, and the cutting layer includes a nickel-cobalt alloy matrix and diamonds embedded therein, wherein the diamonds are uniformly distributed in the nickel-cobalt alloy matrix, and the volume fraction fluctuation is less than 5%.
[0014] In some possible implementation manners, the aluminum alloy base is provided with a through hole penetrating through the first surface and the second surface.
[0015] In the present application, the uniform distribution of diamond particles is achieved by rotating the aluminum alloy substrate at a constant speed: the rotation of the substrate uniformly disperses the diamond particles in the plating solution, optimizes the electric field distribution, and guides the ordered adsorption of the diamond particles to the surface of the nickel-based layer. As the nickel-based layer thickens, the diamond particles are embedded in the nickel-based layer, forming a composite cutting layer with uniform structure. This manufacturing method is beneficial for improving the uniform distribution of diamond particles in the nickel-based layer, reducing the edge collapse problem caused by the cutting layer during inductive cutting, and improving the cutting quality. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a flowchart of the manufacturing method of the diamond blade for cutting inductors provided in an embodiment of the present application.
[0017] Figure 2 is a top view of the diamond blade provided in an embodiment of the present application.
[0018] Figure 3 is a side view of the diamond blade shown in Figure 2 .
[0019] Figure 4 is a schematic diagram of the rotating electroplating support used in the manufacturing method shown in Figure 1 .
[0020] Figure 5 is a scanning electron microscope image of the cutting layer of the diamond blade shown in Figure 2 .
[0021] Figure 6 is a physical diagram of the diamond blade after cutting inductors shown in Figure 2 .
[0022] Figure 7 is a physical diagram of a conventional blade after cutting inductors.
[0023] MAIN ELEMENT SYMBOL EXPLANATION diamond blade 100 aluminum alloy main body 10 first surface 11 second surface 12 annular connecting surface 13 supporting portion 14 through hole 15 cutting layer 20 nickel-based layer 21 diamond particles 22 slot 23 rotating electroplating support 30 titanium alloy core shaft 31 insulating chuck 32 conductive slip ring 33. DETAILED DESCRIPTION
[0024] 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.
[0025] 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.
[0026] 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.
[0027] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.
[0028] See Figure 1 and Figure 2 Some embodiments of the present application provide a method for manufacturing a diamond blade 100 suitable for cutting inductors (hereinafter referred to as the manufacturing method). The manufacturing method includes the following steps: S1: Provide an aluminum alloy substrate (not shown), which is generally disc-shaped and includes an aluminum alloy main body 10 and a support portion 14 (see Figure 4 , the same below). The support portion 14 is protruding from the outer edge of the aluminum alloy main body 10. The support portion 14 is used to support subsequent electroplating deposits to form the cutting layer 20, and will be removed in a subsequent etching process.
[0029] In the embodiment, the aluminum alloy body part 10 comprises a first surface 11, a second surface 12 and a ring-shaped connecting surface 13. The first surface 11 and the second surface 12 are parallelly spaced along the thickness direction of the aluminum alloy base. The ring-shaped connecting surface 13 is connected between the first surface 11 and the second surface 12. One side surface of the support part 14 is substantially flush with the first surface 11. The outer diameter of the first surface 11 is larger than that of the second surface 12, so that the edge of the first surface 11 is radially protruded from the edge of the second surface 12. A through hole 15 is arranged in the central region of the aluminum alloy body part 10 and penetrates the first surface 11 and the second surface 12. The through hole 15 is used to connect a rotating shaft to achieve the purpose of rotary cutting of the diamond blade 100. The aluminum alloy body part 10 and the support part 14 are integrally formed, and the material of the aluminum alloy base can include aluminum alloys of grades such as 6061 and 7075.
[0030] In the embodiment, the step S1 further comprises: S11: removing oil stains on the surface of the aluminum alloy base by using an ultrasonic cleaning machine. Specifically, the aluminum alloy base is placed in an ultrasonic cleaning tank containing an alkaline oil removal agent, and is treated at 40-60°C for 1-3 minutes at an ultrasonic frequency of 28-40 kHz.
[0031] S12: removing the oxide layer on the surface of the aluminum alloy base by alkaline etching, acid etching and zinc immersion. Specifically, first, a sodium hydroxide solution with a concentration of 20-50 g / L is used to etch the aluminum alloy base at 25-35°C for 1-3 minutes to remove the thick oxide layer on the surface of the aluminum alloy base; then, a solution containing nitric acid (200-300 ml / L) is used to etch at room temperature for 30-60 seconds to neutralize the alkali and activate the surface; finally, the aluminum alloy base is immersed in a solution containing zinc sulfate (400-500 g / L), sodium hydroxide (100 g / L) and potassium sodium tartrate (50 g / L) at room temperature for 30-90 seconds, so that a uniform and dense zinc replacement layer is formed on the first surface 11 and the side surface of the support part 14, providing a good substrate for subsequent electroplating.
[0032] S2: please refer to Figure 2 and Figure 3 , and depositing a cutting layer 20 on the aluminum alloy base. The cutting layer 20 comprises a nickel-based layer 21 and diamond particles 22 embedded in the nickel-based layer 21. The particle size of the diamond particles 22 is 5-10 μm, i.e. #2000~#3000. The cutting layer 20 comprises, by mass fraction, nickel 75%-90%, cobalt 5-10% and diamond 5-15%. The thickness of the cutting layer 20 is 10~50 μm. The cutting layer 20 is radially protruded from the edge of the first surface 11 by 3-6 mm.
[0033] In the present embodiment, the cutting layer 20 is formed on the periphery of the first surface 11 and the zinc displacement layer of the support portion 14. The support portion 14, the zinc displacement layer and the cutting layer 20 combine to form a composite layer. In step S2, the cutting layer 20 is deposited on the aluminum alloy substrate by means of composite electroplating, in which the aluminum alloy substrate is rotated relative to the electroplating solution. Specifically, the composite electroplating process comprises: S21: Please refer to Figure 4 The aluminum alloy substrate is loaded into a rotating electroplating support 30, which is connected to the negative pole of a power supply as the electroplating cathode. Specifically, the rotating electroplating support 30 includes a mandrel 31 (e.g. made of titanium alloy), a plurality of insulating chucks 32 and a conductive slip ring 33. The mandrel 31 is inserted through the through hole 15 in the center of the aluminum alloy substrate to provide support and positioning; the insulating chucks 32 are arranged at intervals along the axial direction of the mandrel 31. The aluminum alloy body portion 10 of the aluminum alloy substrate is clamped between two adjacent insulating chucks 32. The support portion 14 of the aluminum alloy substrate and the edge portion of the aluminum alloy body portion 10 protrude out of the insulating chucks 32 in the vertical axial direction, so as to be subsequently electroplated and deposited. The insulating chucks 32 effectively isolate the current due to their insulating properties, reducing the flow of current in the central region of the aluminum alloy body portion 10 during electroplating. The conductive slip ring 33 is provided at the rotating drive end of the support, and the sliding contact structure inside it ensures that the cathode current can be stably conducted from the external power supply to the rotating mandrel 31, and then uniformly transmitted to the support portion 14 of the aluminum alloy substrate in close contact with the mandrel 31, meeting the dynamic conduction requirements of the electroplating process.
[0034] S22: The rotating electroplating support 30 provided with the aluminum alloy substrate is immersed in the electroplating solution in the electroplating tank, and the electroplating solution includes nickel ions and diamond particles 22. Specifically, the electroplating solution includes nickel sulfamate, cobalt sulfamate, nickel chloride, boric acid, sodium dodecyl sulfate, benzaldehyde-2,4-disulfonic acid sodium and diphenylsulfonylpropylamine.
[0035] In the embodiment, the concentration of nickel sulfamate is 300-500 g / L, which provides nickel ions required for electrodeposition as the main salt to form the plating layer matrix. The concentration of cobalt sulfamate is 25-50 g / L, which co-deposits with nickel to form a hard alloy phase to enhance the wear resistance and holding strength of the plating layer to diamond. The concentration of nickel chloride is 10-20 g / L, which promotes the dissolution of anode nickel through chloride ions and improves the conductivity of the plating solution. The concentration of boric acid is 35-50 g / L, which is used to maintain the pH stability of the plating solution to prevent the inclusion of hydrolysis by-products. The concentration of sodium dodecyl sulfate is 0.02-1 g / L, which is used as a wetting agent to reduce surface tension and eliminate pinhole defects caused by hydrogen gas bubbles. The concentration of sodium benzaldehyde-2,4-disulfonate is 5-30 g / L, which plays a leveling role to optimize the micro-level smoothness of the cathode surface. The concentration of diphenylsulfonylpropylamine is 0.2-1 g / L, which is used to adsorb on the grain boundaries to inhibit the accumulation of internal stress and ensure the reliability of the interface bonding between the plating layer and the aluminum alloy substrate.
[0036] S23: Rotate the rotating electroplating support 30 and start electroplating. During electroplating, the cathode current density is 2-5 A / dm², the rotation speed is 30-300 rpm, nickel ions are reduced at the cathode to form a nickel base layer 21, and cobalt ions co-deposit to enhance the hardness and corrosion resistance of the nickel base layer 21, and the diamond particles 22 are driven by the electric field to embed into the matrix.
[0037] In the embodiment, the operation of the rotating electroplating support 30 adopts a high-low speed alternating cycle mode, i.e., the rotating electroplating support 30 rotates at a high speed of 200-300 revolutions per minute for 5-15 seconds, then switches to a low speed of 30-50 revolutions per minute for 30-40 seconds, and repeats the high-low speed cycle 200-300 times. When the rotating electroplating support 30 rotates at a high speed of 200-300 revolutions per minute, the plating solution forms a strong turbulent flow to fully suspend and disperse the diamond particles 22, while flushing the cathode surface to maintain ion replenishment. When the rotating electroplating support 30 rotates at a low speed of 30-50 revolutions per minute, the fluid disturbance is weakened, and the positively charged diamond particles 22 are stably adsorbed to the substrate surface under the action of the electric field, and the nickel-cobalt ions are simultaneously reduced and deposited to form a dense alloy layer to embed and fix them. Through multiple high-low speed cycles, the diamond particles 22 are uniformly distributed in the nickel base layer 21, and the concentration of the diamond particles 22 fluctuates within ±5. The concentration is defined as the proportion of the volume of the diamond particles in the cutting layer 20 per unit volume. For example, for a cutting layer 20 with a volume of 1 cm³, if the total volume of the diamond particles 22 accounts for 25%, the concentration is 100. In the embodiment, the target concentration is 70, and the actual concentration is 65-75. In this way, the diamond particles 22 are uniformly distributed in the nickel base layer 21, which is beneficial to reduce the stress concentration at the cutting edge and reduce the inductance edge collapse.
[0038] S3: Please refer to Figure 5The diamond blade 100 is obtained by machining the cutting layer 20 to form a plurality of grooves 23 distributed along the radial direction.
[0039] Please refer to Figure 2 In the embodiment, the cutting composite layer is machined to form a plurality of grooves 23 distributed along the radial direction. Specifically, the grooves 23 are formed by a slow wire cutting process. The depth of the grooves 23 is 0.8-3.2 mm, the groove spacing is 0.5-1.0 mm, and the groove width is 0.10-0.25 mm.
[0040] In the embodiment, the machining method further comprises the steps of: S4: The diamond blade 100 is subjected to chemical etching treatment. Specifically, an alkaline etching solution (containing sodium hydroxide as the main agent, sodium gluconate as the complexing agent, nickel nitrite as the layer corrosion inhibitor, and a surfactant) is used to selectively dissolve the aluminum alloy support part 14, and the etching rate difference between aluminum and nickel-cobalt alloy is utilized to remove the aluminum alloy support part 14 while exposing the diamond particles 22, thereby facilitating the enhancement of the hardness of the edge of the cutting layer 20.
[0041] S5: The exposed surface of the cutting layer 20 is subjected to electrochemical polishing. Specifically, a viscous diffusion layer is formed on the blade surface by a phosphoric acid-sulfuric acid-based electrolyte, and selective flattening is achieved by preferential anodic dissolution of the micro-protrusion area; a polyol inhibitor is added to form a passivation protective film on the interface of the diamond particles 22, thereby synchronously blocking the over-corrosion of the metal grain boundary; and a pulse current is applied to regulate the dynamic balance between anodic dissolution and diffusion layer reconstruction, thereby obtaining a smooth cutting layer 20 with the diamond particles 22 completely retained in the nickel-based layer 21, which significantly improves the anti-edge collapse performance and cross-section smoothness of the cutting surface.
[0042] After the diamond blade 100 is manufactured, its performance is verified by a cutting test: a 0201 / 01005 packaged micro inductor is selected as the cutting object, and a DISCO 322 cutting machine is used to run under standard parameters (spindle speed: 28 krpm; cutting depth: 0.5 mm; feed speed: 20 mm / s); after the diamond blade 100 forms multiple cutting tracks on the surface of the inductor, the quality is evaluated by microscopic observation of the cross-sectional groove shape of the cutting track. As shown in Figure 6 , the groove shape profile is uniform and smooth, reflecting that the diamond particles 22 are uniformly arranged in the cutting layer 20, and no obvious defects are observed in the preparation process of the diamond blade 100.
[0043] As a comparative example, a conventional cutting tool is used to cut an inductor element of the same specification under the same equipment and parameter conditions. Please refer to Figure 7 , in the same proportion as Figure 6 , in the same proportion as Figure 7The cutting edge of the traditional cutter produces significant edge collapse and micro-cracks, and the groove profile presents irregular sawtooth-like fluctuations. In contrast to the smooth groove surface of the diamond blade 100 of the embodiment, the edge collapse phenomenon of the traditional cutter reflects the uneven distribution of diamond particles 22 and the defects of the blade edge structure, which confirms that the diamond blade 100 with uniform distribution of diamonds can complete the cutting of the composite inductor containing the insulating layer, the copper foil coil and the magnetic core at one time, and reduce the delamination or degumming.
[0044] Please refer to Figure 2 and Figure 3 An embodiment of the present application further provides a diamond blade 100 suitable for cutting an inductor, comprising an aluminum alloy base and a cutting layer 20. The aluminum alloy base comprises a first surface 11, a second surface 12 and an annular connecting surface 13. The first surface 11 and the second surface 12 are oppositely and spacedly arranged, and the connecting surface 13 is connected between the first surface 11 and the second surface 12. The first surface 11 is protruded from the second surface 12. The cutting layer 20 is protruded from the first surface 11. The cutting layer 20 comprises a nickel-based layer 21 and diamond particles 22 embedded therein, wherein the diamond particles 22 are uniformly distributed in the nickel-based layer 21, and the fluctuation of the concentration of the diamond particles 22 is ±5.
[0045] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application 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 range of the equivalent elements of the claims are intended to be included in the present application.
[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. 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 replaced equivalently without departing from the spirit and scope of the present application.
Claims
1. A method for manufacturing a diamond blade suitable for cutting inductors, characterized in that: Including steps: Providing an aluminum alloy main body; Depositing a cutting layer on the aluminum alloy main body, the cutting layer comprising a nickel base layer and diamond particles embedded in the nickel base layer; The cutting layer is processed to form a plurality of radially distributed grooves to obtain the diamond blade. The cutting layer comprises, by mass fraction, 75%-90% nickel, 5-10% cobalt and 5-15% diamond. The cutting layer is deposited on the aluminum alloy substrate by composite electroplating. During the composite electroplating process, the aluminum alloy substrate rotates relative to the electroplating solution.
2. The manufacturing method according to claim 1, wherein The composite electroplating process comprises the steps of: The aluminum alloy main body is placed in a rotating electroplating bracket, and the rotating electroplating bracket is connected to the electroplating cathode; Immersing the rotating electroplating bracket in an electroplating solution comprising nickel ions and diamond particles; The rotating plating support is rotated and electroplating is started.
3. The manufacturing method according to claim 2, wherein: The electroplating solution comprises nickel sulfamate, cobalt sulfamate, nickel chloride, boric acid, sodium lauryl sulfate, sodium benzaldehyde-2,4-disulfonate and diphenylsulfonylpropylamine.
4. The manufacturing method according to claim 3, wherein: The concentration of the nickel sulfamate is 300-500 g / L, the concentration of the cobalt sulfamate is 25-50 g / L, the concentration of the nickel chloride is 10-20 g / L, the concentration of the boric acid is 35-50 g / L, the concentration of the sodium lauryl sulfate is 0.02-1 g / L, the concentration of the sodium benzaldehyde-2,4-disulfonate is 5-30 g / L, and the concentration of the diphenylsulfonylpropylamine is 0.2-1 g / L.
5. The manufacturing method according to claim 2, wherein: The step of "rotating the rotary electroplating support" includes: The rotating electroplating support was rotated at 200-300 rpm for 5-15 seconds, then switched to 30-50 rpm for 30-40 seconds, and repeated 200-300 times.
6. The manufacturing method according to claim 1, wherein: Before the step of "depositing a cutting layer on the aluminum alloy substrate", the following steps are included: Using an ultrasonic cleaning machine to remove oil stains on the surface of the aluminum alloy substrate; removing the oxide layer on the surface of the aluminum alloy substrate by alkaline etching and acid etching; A zinc layer is formed on the surface of the aluminum alloy substrate by zinc immersion, and the zinc layer is used to improve the bonding strength between the cutting layer and the aluminum alloy substrate.
7. The manufacturing method according to claim 1, wherein: After the step of "depositing a cutting layer on the aluminum alloy substrate", the following steps are included: The cutting layer is cut to form a plurality of grooves distributed along a radial direction on the cutting layer.
8. The manufacturing method according to claim 1, wherein: The aluminum alloy main body has a protruding support portion formed on its periphery, and the cutting layer is formed on the support portion. After the step of "depositing the cutting layer on the aluminum alloy substrate", the step further includes: The support portion is removed by etching, so that the cutting layer is exposed.
9. A diamond blade manufactured by the method for manufacturing a diamond blade suitable for cutting inductors according to any one of claims 1 to 8, characterized in that: include: an aluminum alloy main body, the aluminum alloy main body comprising a first surface, a second surface, and a connecting surface, the first surface and the second surface being spaced apart from each other, the connecting surface being connected between the first surface and the second surface, and the first surface protruding from the second surface; A cutting layer protrudes from the first surface, the cutting layer comprising a nickel base layer and diamond particles embedded therein, wherein the diamond particles are uniformly distributed on the nickel base layer, and the concentration of the diamond particles fluctuates within ±5.
10. The diamond blade according to claim 9, wherein The aluminum alloy main body is provided with a through hole, and the through hole passes through the first surface and the second surface.