High-sharpness granite edge grinding wheel and preparation method thereof

Abstract

The invention discloses a high-sharpness granite edge grinding wheel and a preparation method thereof, and belongs to the technical field of stone machining tools. The high-sharpness granite edge grinding wheel comprises a base body and a plurality of metal blocks. The base body is provided with a main through hole, a bypass hole and a plurality of inclined grooves, the main through hole and the bypass hole are formed in a main body of the base body, and the inclined grooves are formed in the edge of the base body; the metal block is arranged in the chute; wherein the metal block comprises diamond particles, first metal powder and second metal powder. The inclined groove is formed in the side face of the base body, and the inclination angle of the inclined groove is consistent with the edging direction of the cutting edge, so that the cutting sharpness is greatly improved, and meanwhile the holding strength of the base body on a metal block is enhanced; in addition, the inclined grooves are matched with the edging direction, the cutting resistance can be reduced, and the roughness Ra of the machined surface of the granite is reduced to be smaller than or equal to 1.6 micrometers.

Description

Technical Field

[0001] The present invention relates to the technical field of stone processing tools, and particularly to a high sharpness granite edge grinding wheel and a preparation method thereof. Background Art

[0002] Due to its high hardness and strong weather resistance, granite is widely used in indoor and outdoor projects of large public buildings (such as floors, walls, countertops, etc.), and its processing accuracy directly affects the decoration effect. Traditional cutting heads use cobalt-based materials or metal bondings with low Fe content, resulting in insufficient sharpness of the cutting heads. When processing high-hardness granite, it is easy to cause rough stone surfaces and dimensional errors; at the same time, the connection strength between the metal blocks and the substrate is low, and they are easily detached due to vibration, affecting processing stability and safety. Summary of the Invention

[0003] Other features and advantages of the present invention will be described in the following specification, and will be partially obvious from the specification, or understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in the specification and other specification drawings.

[0004] The objective of the present invention is to overcome the above deficiencies and provide a high sharpness granite edge grinding wheel and a preparation method thereof.

[0005] To achieve the above objective, the technical solution of the present invention is: a high sharpness granite edge grinding wheel, comprising: A substrate, which is provided with a main through hole, a side through hole, and a plurality of inclined grooves. The main through hole and the side through hole are provided on the main body of the substrate, and a plurality of the inclined grooves are all provided on the edge of the substrate; A plurality of metal blocks, which are arranged in the inclined grooves; Wherein, the metal block comprises diamond particles, a first metal powder, and a second metal powder.

[0006] In some embodiments, based on the total mass of the metal block, the mass content of the diamond particles is 2% - 5%, the mass content of the first metal powder is ≥70%, and the rest is the second metal powder.

[0007] In some embodiments, the first metal powder is iron powder.

[0008] In some embodiments, the second metal powder is one or more of copper powder, zinc powder, and nickel powder.

[0009] In some embodiments, based on the total mass of the second metal powder, the mass content of the copper powder is 40% - 50%, and the mass content of the zinc powder is 50% - 60%.

[0010] In some embodiments, based on the total mass of the second metal powder, the mass content of the copper powder is 40% - 50%, and the mass content of the nickel powder is 50% - 60%.

[0011] In some embodiments, based on the total mass of the second metal powder, the mass content of the zinc powder is 50% - 60%, and the mass content of the nickel powder is 40% - 50%.

[0012] In some embodiments, based on the total mass of the second metal powder, the mass content of the copper powder is 30% - 40%, the mass content of the zinc powder is 30% - 40%, and the mass content of the nickel powder is 20% - 40%.

[0013] In some embodiments, the mesh number of the diamond particles is 30 mesh - 50 mesh.

[0014] In some embodiments, the inclination angle of the inclined groove is 15° - 30°.

[0015] The present invention also provides a method for preparing a high - sharpness granite edge - grinding wheel, comprising the following steps: Fabrication of the substrate: The substrate is formed by numerically controlled machining of A3 steel. The substrate is provided with a main through - hole, a side through - hole, and a plurality of inclined grooves. The main through - hole and the side through - hole are arranged on the main body of the substrate, and a plurality of the inclined grooves are all arranged on the edge of the substrate; Fabrication of the metal block: The first metal powder, the second metal powder, and the diamond particles are mixed and sintered into shape to form a metal block; Fabrication of the edge - grinding wheel: The metal block is fixed in the inclined groove of the substrate by high - frequency welding.

[0016] In some embodiments, during the fabrication of the metal block, the sintering temperature is 750°C - 810°C.

[0017] In summary, the beneficial effects of the present invention are as follows: The edge - grinding wheel of the present invention is composed of a substrate having a main through - hole, a side through - hole, and a plurality of inclined grooves and a plurality of metal blocks. The metal blocks are arranged on the inclined grooves of the substrate, and the substrate of the present invention is made of steel, which can be adapted to the spindles of different models of CNC equipment, enhancing the assembly compatibility.

[0018] By providing inclined grooves on the side surface of the substrate, and the inclination angle of the inclined grooves is consistent with the direction of edge sharpening of the cutting edge, the present invention greatly improves the sharpness of cutting, while enhancing the holding strength of the substrate for the metal blocks; in addition, the inclined grooves of the present invention are matched with the edge - sharpening direction, which can reduce the cutting resistance and reduce the surface roughness of granite processing to Ra≤1.6μm.

[0019] The metal block of the present invention mainly comprises diamond particles, iron powder and other metal powders. Due to the high iron content of the metal block, the cost of the metal block is greatly reduced, and the service life of the edge grinding wheel is also prolonged.

[0020] The metal block of the present invention is fixed in the inclined groove of the base body by high-frequency welding. With the mechanical support of the inclined groove of the base body, it is not easy to fall off due to vibration, greatly reducing the risk of falling off.

[0021] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure.

[0022] Undoubtedly, such objects of the present invention and other objects will become more apparent after the detailed description of the preferred embodiments described below with multiple drawings and illustrations.

[0023] To make the above and other objects, features and advantages of the present invention more obvious and understandable, one or several preferred embodiments are specifically given below, and in conjunction with the accompanying drawings shown, the detailed description is as follows. Description of the Drawings

[0024] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention.

[0025] In the drawings, the same components are denoted by the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only one or several embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to such drawings.

[0027] Figure 1 It is a schematic structural diagram of the edge grinding wheel of the present invention; Figure 2 It is a preparation flow chart of the edge grinding wheel of the present invention.

[0028] Main reference numeral description: 1, base body; 11, main through hole; 12, side through hole; 2, metal block. Detailed Embodiments

[0029] In order to make the objects, technical solutions and advantages of the present invention more clear, the following further details the present invention in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0030] In addition, in the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0031] In the present invention, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. However, indicating a direct connection means that there is no connection relationship constructed through a transition structure between the two connected main bodies, and only through the connection structure to form an integral body. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0033] Refer to Figure 1 , Figure 1 which is a schematic structural diagram of the edge grinding wheel of the present invention.

[0034] According to some embodiments of the present invention, the present invention provides a high sharpness granite edge grinding wheel, including: A base body 1, which is provided with a main through hole 11, a side through hole 12, and a plurality of inclined slots (not shown in the figure). The main through hole 11 and the side through hole 12 are provided on the main body of the base body 1, and a plurality of the inclined slots (not shown in the figure) are all provided on the edge of the base body 1; A plurality of metal blocks 2, which are arranged in the inclined slots (not shown in the figure); Among them, the metal block 2 includes diamond particles, a first metal powder, and a second metal powder.

[0035] According to some embodiments of the present invention, preferably, based on the total mass of the metal block 2, the mass content of the diamond particles is 2% - 5%, the mass content of the first metal powder is ≥70%, and the rest is the second metal powder.

[0036] According to some embodiments of the present invention, preferably, the first metal powder is iron powder.

[0037] According to some embodiments of the present invention, preferably, the second metal powder is one or more of copper powder, zinc powder, and nickel powder.

[0038] According to some embodiments of the present invention, preferably, based on the total mass of the second metal powder, the mass content of the copper powder is 40% - 50%, and the mass content of the zinc powder is 50% - 60%.

[0039] According to some embodiments of the present invention, preferably, based on the total mass of the second metal powder, the mass content of the copper powder is 40% - 50%, and the mass content of the nickel powder is 50% - 60%.

[0040] According to some embodiments of the present invention, preferably, based on the total mass of the second metal powder, the mass content of the zinc powder is 50% - 60%, and the mass content of the nickel powder is 40% - 50%.

[0041] According to some embodiments of the present invention, preferably, based on the total mass of the second metal powder, the mass content of the copper powder is 30% - 40%, the mass content of the zinc powder is 30% - 40%, and the mass content of the nickel powder is 20% - 40%.

[0042] According to some embodiments of the present invention, preferably, the mesh number of the diamond particles is 30 mesh - 50 mesh.

[0043] According to some embodiments of the present invention, preferably, the inclination angle of the inclined groove is 15° - 30°.

[0044] Refer to Figure 2 , Figure 2 is the preparation flow chart of the edge grinding wheel of the present invention.

[0045] According to some embodiments of the present invention, the present invention also provides a method for preparing a high - sharpness granite edge grinding wheel, including the following steps: Manufacture of the base body 1: The base body 1 is formed by numerically controlling the machining of A3 steel. The base body 1 is provided with a main through hole 11, a side through hole 12, and a plurality of inclined grooves (not shown in the figure). The main through hole 11 and the side through hole 12 are provided on the main body of the base body 1, and the plurality of inclined grooves (not shown in the figure) are all provided on the edge of the base body 1; Manufacture of the metal block 2: Mix the first metal powder, the second metal powder and diamond particles and sinter them into a mold to form the metal block 2; Manufacture of the edge grinding wheel: Fix the metal block 2 in the inclined groove (not shown in the figure) of the base body 1 by high-frequency welding.

[0046] According to some embodiments of the present invention, preferably, in the manufacture of the metal block 2, the sintering temperature is 750°C - 810°C.

[0047] Example 1 This embodiment provides a granite edge grinding wheel with high sharpness. The edge grinding wheel includes a base body 1 and a plurality of metal blocks 2. Among them, the base body 1 is provided with a main through hole 11, a side through hole 12, and a plurality of inclined grooves (not shown in the figure). The main through hole 11 and the side through hole 12 are provided on the main body of the base body 1, and the plurality of inclined grooves (not shown in the figure) are all provided on the edge of the base body 1; the metal block 2 is arranged in the inclined groove (not shown in the figure).

[0048] The metal block 2 includes diamond particles, iron powder, and copper powder. Based on the total mass of the metal block 2, the mass content of diamond particles is 2% - 5%, the mass content of iron powder is ≥70%, and the rest is copper powder.

[0049] Among them, the mesh number of diamond particles is 30 - 50 meshes; the inclination angle of the inclined groove (not shown in the figure) is 15° - 30°.

[0050] The preparation method of the edge grinding wheel in this embodiment includes the following steps: Manufacture of the base body 1: The base body 1 is formed by numerically controlling the machining of A3 steel. The base body is provided with a main through hole 11, a side through hole 12, and a plurality of inclined grooves (not shown in the figure). The main through hole 11 and the side through hole 12 are provided on the main body of the base body 1, and the plurality of inclined grooves (not shown in the figure) are all provided on the edge of the base body 1; Manufacture of the metal block 2: Mix iron powder, copper powder and diamond particles and sinter them into a mold at a temperature of 750°C - 810°C to form the metal block 2; Manufacture of the edge grinding wheel: Fix the metal block 2 in the inclined groove (not shown in the figure) of the base body 1 by high-frequency welding.

[0051] Example 2 This embodiment provides a granite grinding wheel with high sharpness. The grinding wheel includes a matrix 1 and a plurality of metal blocks 2. Among them, the matrix 1 is provided with a main through hole 11, a side through hole 12 and a plurality of inclined slots (not shown in the figure). The main through hole 11 and the side through hole 12 are arranged on the main body of the matrix 1, and the plurality of inclined slots (not shown in the figure) are all arranged on the edge of the matrix 1; the metal blocks 2 are arranged in the inclined slots (not shown in the figure).

[0052] The metal block 2 includes diamond particles, iron powder and zinc powder. Based on the total mass of the metal block 2, the mass content of diamond particles is 2%-5%, the mass content of iron powder is ≥70%, and the rest is zinc powder.

[0053] Among them, the mesh number of diamond particles is 30 mesh - 50 mesh; the inclination angle of the inclined slot (not shown in the figure) is 15° - 30°.

[0054] The preparation method of the grinding wheel in this embodiment includes the following steps: Manufacture of the matrix 1. The matrix 1 is formed by numerically controlling the machining of A3 steel. The matrix 1 is provided with a main through hole 11, a side through hole 12 and a plurality of inclined slots (not shown in the figure). The main through hole 11 and the side through hole 12 are arranged on the main body of the matrix 1, and the plurality of inclined slots (not shown in the figure) are all arranged on the edge of the matrix 1; Manufacture of the metal block 2. Mix iron powder, zinc powder and diamond particles and place them at a temperature of 750°C - 810°C for sintering and forming to form the metal block 2; Manufacture of the grinding wheel. Fix the metal block 2 in the inclined slot of the matrix 1 by high-frequency welding.

[0055] Example 3 This embodiment provides a granite grinding wheel with high sharpness. The grinding wheel includes a matrix 1 and a plurality of metal blocks 2. Among them, the matrix 1 is provided with a main through hole 11, a side through hole 12 and a plurality of inclined slots (not shown in the figure). The main through hole 11 and the side through hole 12 are arranged on the main body of the matrix 1, and the plurality of inclined slots (not shown in the figure) are all arranged on the edge of the matrix 1; the metal blocks 2 are arranged in the inclined slots (not shown in the figure).

[0056] The metal block 2 includes diamond particles, iron powder and nickel powder. Based on the total mass of the metal block 2, the mass content of diamond particles is 2%-5%, the mass content of iron powder is ≥70%, and the rest is nickel powder.

[0057] Among them, the mesh number of diamond particles is 30 mesh - 50 mesh; the inclination angle of the inclined slot (not shown in the figure) is 15° - 30°.

[0058] The preparation method of the grinding wheel in this embodiment includes the following steps: Fabrication of the substrate 1: The substrate 1 is fabricated by numerically controlling the machining of A3 steel. The substrate 1 is provided with a main through-hole 11, a side through-hole 12, and a plurality of inclined grooves (not shown in the figure). The main through-hole 11 and the side through-hole 12 are provided on the main body of the substrate 1, and the plurality of inclined grooves (not shown in the figure) are all provided on the edge of the substrate 1; Fabrication of the metal block 2: Iron powder, nickel powder, and diamond particles are mixed and placed at a temperature of 750 °C - 810 °C for sintering and forming to form the metal block 2; Fabrication of the edge grinding wheel: The metal block 2 is fixed in the inclined groove of the substrate 1 by high-frequency welding.

[0059] Example 4 This example provides a high-sharpness granite edge grinding wheel. The edge grinding wheel includes a substrate 1 and a plurality of metal blocks 2. Among them, the substrate 1 is provided with a main through-hole 11, a side through-hole 12, and a plurality of inclined grooves (not shown in the figure). The main through-hole 11 and the side through-hole 12 are provided on the main body of the substrate 1, and the plurality of inclined grooves (not shown in the figure) are all provided on the edge of the substrate 1; the metal block 2 is provided in the inclined groove (not shown in the figure).

[0060] The metal block 2 includes diamond particles, iron powder, copper powder, and zinc powder. Based on the total mass of the metal block 2, the mass content of diamond particles is 2% - 5%, the mass content of iron powder is ≥70%, and the rest is copper powder and zinc powder.

[0061] Among them, the mesh number of diamond particles is 30 - 50 meshes; the inclination angle of the inclined groove is 15° - 30°.

[0062] The preparation method of the edge grinding wheel in this example includes the following steps: Fabrication of the substrate 1: The substrate 1 is fabricated by numerically controlling the machining of A3 steel. The substrate 1 is provided with a main through-hole 11, a side through-hole 12, and a plurality of inclined grooves (not shown in the figure). The main through-hole 11 and the side through-hole 12 are provided on the main body of the substrate 1, and the plurality of inclined grooves (not shown in the figure) are all provided on the edge of the substrate 1; Fabrication of the metal block 2: Iron powder, copper powder, zinc powder, and diamond particles are mixed and placed at a temperature of 750 °C - 810 °C for sintering and forming to form the metal block 2; Fabrication of the edge grinding wheel: The metal block 2 is fixed in the inclined groove (not shown in the figure) of the substrate 1 by high-frequency welding.

[0063] Example 5 This example provides a high-sharpness granite edge grinding wheel. The edge grinding wheel includes a substrate 1 and a plurality of metal blocks 2. Among them, the substrate 1 is provided with a main through-hole 11, a side through-hole 12, and a plurality of inclined grooves (not shown in the figure). The main through-hole 11 and the side through-hole 12 are provided on the main body of the substrate 1, and the plurality of inclined grooves (not shown in the figure) are all provided on the edge of the substrate 1; the metal block 2 is provided in the inclined groove (not shown in the figure).

[0064] The metal block 2 includes diamond particles, iron powder, as well as copper powder and nickel powder. Based on the total mass of the metal block 2, the mass content of diamond particles is 2% - 5%, the mass content of iron powder is ≥70%, and the rest are copper powder and nickel powder.

[0065] Among them, the mesh number of diamond particles is 30 - 50 meshes; the inclination angle of the inclined groove (not shown in the figure) is 15° - 30°.

[0066] The preparation method of the grinding wheel in this embodiment includes the following steps: Fabrication of the base body 1: The base body 1 is formed by numerically controlling the machining of A3 steel. The base body 1 is provided with a main through hole 11, a side through hole 12, and a plurality of inclined grooves (not shown in the figure). The main through hole 11 and the side through hole 12 are arranged on the main body of the base body 1, and a plurality of inclined grooves (not shown in the figure) are all arranged on the edge of the base body 1; Fabrication of the metal block 2: The iron powder, copper powder, nickel powder, and diamond particles are mixed and placed at a temperature of 750°C - 810°C for sintering and forming to form the metal block 2; Fabrication of the grinding wheel: The metal block 2 is fixed in the inclined groove (not shown in the figure) of the base body 1 by high-frequency welding.

[0067] Example 6 This embodiment provides a high-sharpness granite grinding wheel. The grinding wheel includes a base body 1 and a plurality of metal blocks 2. Among them, the base body 1 is provided with a main through hole 11, a side through hole 12, and a plurality of inclined grooves (not shown in the figure). The main through hole 11 and the side through hole 12 are arranged on the main body of the base body 1, and a plurality of inclined grooves (not shown in the figure) are all arranged on the edge of the base body 1; the metal block 2 is arranged in the inclined groove (not shown in the figure).

[0068] The metal block 2 includes diamond particles, iron powder, as well as zinc powder and nickel powder. Based on the total mass of the metal block 2, the mass content of diamond particles is 2% - 5%, the mass content of iron powder is ≥70%, and the rest are zinc powder and nickel powder.

[0069] Among them, the mesh number of diamond particles is 30 - 50 meshes; the inclination angle of the inclined groove (not shown in the figure) is 15° - 30°.

[0070] The preparation method of the grinding wheel in this embodiment includes the following steps: Fabrication of the base body 1: The base body 1 is formed by numerically controlling the machining of A3 steel. The base body 1 is provided with a main through hole 11, a side through hole 12, and a plurality of inclined grooves (not shown in the figure). The main through hole 11 and the side through hole 12 are arranged on the main body of the base body 1, and a plurality of inclined grooves (not shown in the figure) are all arranged on the edge of the base body 1; Fabrication of the metal block 2: Mix iron powder, zinc powder, nickel powder and diamond particles, and place them at a temperature of 750°C - 810°C for sintering and forming to obtain the metal block 2; Fabrication of the edge grinding wheel: Fix the metal block 2 in the inclined groove (not shown in the figure) of the base body 1 by high-frequency welding.

[0071] Example 7 This example provides a high sharpness granite edge grinding wheel. The edge grinding wheel includes a base body 1 and a plurality of metal blocks 2. Among them, the base body 1 is provided with a main through hole 11, a side through hole 12 and a plurality of inclined grooves (not shown in the figure). The main through hole 11 and the side through hole 12 are arranged on the main body of the base body 1, and the plurality of inclined grooves (not shown in the figure) are all arranged on the edge of the base body 1; the metal block 2 is arranged in the inclined groove (not shown in the figure).

[0072] The metal block 2 includes diamond particles, iron powder, and copper powder, zinc powder, nickel powder. Based on the total mass of the metal block 2, the mass content of diamond particles is 2% - 5%, the mass content of iron powder is ≥70%, and the rest are copper powder, zinc powder, nickel powder.

[0073] Among them, the mesh number of diamond particles is 30 mesh - 50 mesh; the inclination angle of the inclined groove (not shown in the figure) is 15° - 30°.

[0074] The preparation method of the edge grinding wheel in this example includes the following steps: Fabrication of the base body 1: Use A3 steel for numerical control machining to form the base body 1. The base body 1 is provided with a main through hole 11, a side through hole 12 and a plurality of inclined grooves (not shown in the figure). The main through hole 11 and the side through hole 12 are arranged on the main body of the base body 1, and the plurality of inclined grooves (not shown in the figure) are all arranged on the edge of the base body 1; Fabrication of the metal block 2: Mix iron powder, copper powder, zinc powder, nickel powder and diamond particles, and place them at a temperature of 750°C - 810°C for sintering and forming to obtain the metal block 2; Fabrication of the edge grinding wheel: Fix the metal block 2 in the inclined groove (not shown in the figure) of the base body 1 by high-frequency welding.

[0075] Performance test For Examples 1 - 7, by adjusting the inclination angle of the inclined groove, the surface roughness of granite processing is tested. The test results are as follows: Table 1 Test data table of the surface roughness of granite processing

[0076] As can be seen from Table 1, when the inclination angle of the chute is between 15° and 30°, the surface roughness of the processed granite is extremely low; while when the inclination angle of the chute is outside the range of 15° - 30°, the surface roughness of the processed granite is very high.

[0077] The edge grinding wheel made of the traditional cobalt-based matrix includes cobalt, copper, nickel, and diamond. Based on the total mass of the edge grinding wheel made of the cobalt-based matrix, the mass content of cobalt is 50% - 70%, the mass content of copper is 10% - 40%, the mass content of nickel is 12% - 16%, and the rest is diamond.

[0078] The cost accounting and life cycle test were carried out on the edge grinding wheels of Examples 1 - 7 and the edge grinding wheels made of the traditional cobalt-based matrix. The test results are as follows: Table 2 Data table of cost accounting and life cycle test of edge grinding wheels

[0079] As can be seen from Table 2, the material costs of the present invention are all lower than those of the edge grinding wheels made of the traditional cobalt-based matrix, and the service lives are also longer than those of the edge grinding wheels made of the traditional cobalt-based matrix.

[0080] It should be noted that many specific details have been set forth in the above description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

Claims

1. A granite edge grinding wheel with high sharpness, characterized in that, Comprising: A substrate provided with a main through-hole, a side through-hole, and a plurality of inclined grooves, the main through-hole and the side through-hole being provided on the main body of the substrate, and the plurality of inclined grooves being provided on the edge of the substrate; A plurality of metal blocks provided in the inclined grooves; Wherein, the metal block comprises diamond particles, a first metal powder, and a second metal powder.

2. The high sharpness granite edge grinding wheel according to claim 1, wherein Based on the total mass of the metal block, the mass content of the diamond particles is 2% - 5%, the mass content of the first metal powder is ≥70%, and the rest is the second metal powder.

3. The high sharpness granite edge grinding wheel according to claim 1 or 2, characterized in that, The first metal powder is iron powder.

4. The high sharpness granite edging wheel according to claim 1 or 2, characterized in that The second metal powder is one or more of copper powder, zinc powder, and nickel powder.

5. The high sharpness granite edge grinding wheel according to claim 4, wherein Based on the total mass of the second metal powder, the mass content of the copper powder is 40% - 50%, and the mass content of the zinc powder is 50% - 60%.

6. The high sharpness granite edge grinding wheel according to claim 4, wherein Based on the total mass of the second metal powder, the mass content of the copper powder is 40% - 50%, and the mass content of the nickel powder is 50% - 60%.

7. The high sharpness granite edge grinding wheel according to claim 4, wherein Based on the total mass of the second metal powder, the mass content of the zinc powder is 50% - 60%, and the mass content of the nickel powder is 40% - 50%.

8. The high sharpness granite edge grinding wheel according to claim 4, wherein Based on the total mass of the second metal powder, the mass content of the copper powder is 30% - 40%, the mass content of the zinc powder is 30% - 40%, and the mass content of the nickel powder is 20% - 40%.

9. The high-sharpness granite edging wheel according to claim 1, characterized in that, The mesh number of the diamond particles is 30 mesh - 50 mesh.

10. The high sharpness granite edge grinding wheel according to claim 1, wherein The inclination angle of the inclined groove is 15° - 30°.

11. A preparation method of a granite grinding wheel with high sharpness, characterized in that, Including the following steps: Fabrication of the substrate: The substrate is formed by numerically controlling the machining of A3 steel. The substrate is provided with a main through-hole, a side through-hole, and a plurality of inclined grooves. The main through-hole and the side through-hole are provided on the main body of the substrate, and the plurality of inclined grooves are provided on the edge of the substrate; Fabrication of the metal block: The first metal powder, the second metal powder, and the diamond particles are mixed and sintered into a shape to form a metal block; Fabrication of the grinding wheel: The metal block is fixed in the inclined groove of the substrate by high-frequency welding.

12. The preparation method of the high sharpness granite edge grinding wheel according to claim 11, characterized in that, In the fabrication of the metal block, the sintering temperature is 750°C - 810°C.

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