A diamond wear-resistant brazing coating and a preparation method thereof

Abstract

This invention relates to the fields of brazing technology, brazing materials, diamond coatings, and the preparation of wear-resistant coatings for metal surfaces. Specifically, it relates to a diamond wear-resistant brazing coating and its preparation method. The preparation method includes: placing an venting and expansion-limiting brazing material on the surface of a steel substrate to be brazed, and then performing heat brazing; wherein the venting and expansion-limiting brazing material includes a metal mesh and several adhesive brazing strips spaced apart from each other, with the gap between any two adjacent adhesive brazing strips being 0.5-1.5 mm; during brazing, the adhesive brazing strips are all located between the steel substrate and the metal mesh. This invention constructs an venting network channel by spaced-apart adhesive brazing strips, reducing surface pits caused by rapid evaporation and bubbling of organic matter. The metal mesh on top keeps the venting channel open and provides flexible expansion-limiting for the adhesive brazing material, inhibiting bubbling, warping, and local protrusions; effectively improving the surface quality and wear resistance of the diamond wear-resistant brazing coating.

Description

Technical Field

[0001] This invention relates to the fields of brazing technology, brazing materials, diamond coatings, and the preparation of wear-resistant coatings for metal surfaces. Specifically, it relates to a diamond wear-resistant brazing coating and its preparation method. Background Technology

[0002] Diamond wear-resistant coatings are widely used in industry, primarily on core wear-resistant components in mining equipment, port equipment, and agricultural machinery. They are typically applied by brazing to the surface of these components. This coating significantly extends the service life of the wear-resistant parts.

[0003] Traditional diamond wear-resistant coating preparation processes mostly involve pre-applying a layer of paste-like diamond wear-resistant brazing material to the surface of the workpiece, and then performing induction brazing after the paste-like material has slowly dried. Waiting for the paste-like material to dry takes a significant amount of time, resulting in a severe reduction in work efficiency. Therefore, using pre-formed diamond adhesive tape for brazing is an effective method to improve brazing efficiency.

[0004] However, diamond adhesive brazing filler metal has two prominent problems in actual brazing processes: First, the organic binder and solvent evaporate or decompose during the heating stage. When the rate of volatile product generation exceeds the rate of evaporation, bubbling, air venting pits, pores, and even local cracking will occur inside and on the surface of the adhesive brazing filler metal. Second, the addition of diamond particles significantly increases the solid content of the system, weakening the flow and self-leveling ability of the molten brazing filler metal. As a result, the pits formed during the degreasing stage are difficult to be automatically filled by the melt during the brazing stage, and the final brazing coating has a large number of pitted structures, which seriously affects the coating quality.

[0005] Existing methods mainly focus on optimizing binder formulations, reducing organic content, extending degreasing and holding time, reducing heating rates, and increasing solder flowability. While these methods have some effect, they suffer from low efficiency, narrow process windows, and uneven coating surfaces. Therefore, developing a soldering method that can solve these problems is of great significance.

[0006] In view of this, the present invention is hereby proposed. Summary of the Invention

[0007] The primary objective of this invention is to provide a method for preparing a diamond wear-resistant brazing coating. This method effectively reduces surface pits caused by rapid evaporation and bubbling of organic matter by constructing an exhaust network channel; and by setting a top metal mesh, it provides flexible expansion-limiting effect on the brazing filler metal while keeping the exhaust channel open, thus inhibiting bubbling, warping, and local protrusions; thereby effectively improving the surface quality and wear resistance of the diamond wear-resistant brazing coating.

[0008] The second objective of this invention is to provide a diamond wear-resistant brazing coating, which is prepared by the diamond wear-resistant brazing coating preparation method described above.

[0009] In order to achieve the above-mentioned objectives of the present invention, the following technical solution is adopted: A method for preparing a diamond wear-resistant brazing coating includes the following steps: The venting and expansion-limiting brazing material is placed on the surface of the steel substrate to be brazed, and then heated and brazed. The venting and expansion-limiting brazing material includes a metal mesh and several adhesive brazing strips spaced apart from each other, with the gap between any two adjacent adhesive brazing strips being 0.5-1.5 mm; during brazing, the adhesive brazing strips are all located between the steel substrate and the metal mesh.

[0010] Preferably, the venting and expansion-limiting brazing material further includes a metal sheet, and several adhesive brazing strips are located between the metal sheet and the metal mesh; during brazing, the metal sheet contacts the surface of the steel substrate to be brazed.

[0011] Preferably, the adhesive solder strip includes a first adhesive solder strip fixed on the metal sheet and a second adhesive solder strip fixed on the metal mesh. The metal sheet and the first adhesive solder strip constitute a lower strip assembly, and the metal mesh and the second adhesive solder strip constitute an upper strip assembly. The upper strip assembly is fastened to the lower strip assembly, so that the first adhesive solder strip and the second adhesive solder strip are arranged alternately.

[0012] Preferably, the method for preparing the diamond wear-resistant brazing coating specifically includes the following steps: S1. A plurality of first adhesive solder strips are bonded at intervals onto the metal sheet to obtain the lower strip assembly; a plurality of second adhesive solder strips are bonded at intervals onto the metal mesh to obtain the upper strip assembly; S2. Place the lower strip assembly on the surface of the steel substrate to be soldered, invert the upper strip assembly, and insert it into the lower strip assembly in a staggered manner, so that the first adhesive solder strip and the second adhesive solder strip are arranged alternately, and the gap between adjacent first adhesive solder strips and second adhesive solder strips is 0.5-1.5mm. S3. Heat the assembly obtained in step S2 to complete the brazing.

[0013] Preferably, the width of each of the several adhesive solder strips is 3-8 mm.

[0014] Preferably, the thickness of each of the several adhesive solder strips is 2-8 mm.

[0015] Preferably, each of the plurality of adhesive brazing strips independently comprises an organic binder, resin, diamond particles, and brazing powder.

[0016] Preferably, the metal mesh includes any one of pure copper mesh, copper alloy mesh, Ni-based non-crystalline mesh, and silver alloy mesh.

[0017] Preferably, the thickness of the metal mesh is 0.2-1 mm.

[0018] Preferably, the metal sheet includes any one of pure copper sheet, copper alloy sheet, Ni-based non-crystalline wafer, and silver alloy sheet.

[0019] Preferably, the thickness of the metal sheet is 0.2-1 mm.

[0020] A diamond wear-resistant brazing coating is prepared by the diamond wear-resistant brazing coating preparation method described in any one of the foregoing embodiments.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention employs a venting and expansion-limiting brazing coating material to braze the surface of a steel substrate. The gaps between several spaced adhesive brazing strips form a continuous venting network channel, which can effectively reduce surface pits caused by rapid evaporation and bubbling of organic matter. In addition, the metal mesh on top of the adhesive brazing strips, while keeping the venting channels open, also provides flexible expansion-limiting for the adhesive brazing material, suppressing bubbling, warping, and local protrusions. Through the synergistic effect of the venting channels and the top metal mesh, the brazed coating surface is smooth and pit-free. This method can reduce the risk of diamond thermal damage caused by prolonged heating and holding time in traditional processes. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the upper strip assembly provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the lower strip assembly provided in an embodiment of the present invention; Figure 3 This is a schematic diagram showing the misaligned interlocking of the upper and lower strip components in some embodiments of the present invention; Figure 4 This is a schematic diagram illustrating the misalignment and interlocking of the upper and lower strip components and the end-position filling in other embodiments of the present invention; Figure 5 This is a surface morphology diagram of the diamond wear-resistant brazing coating after welding in Embodiment 2 of the present invention; Figure 6 This is a surface morphology diagram of the diamond wear-resistant brazing coating after welding in Comparative Example 1 of the present invention; Figure 7 This is a surface morphology diagram of the diamond wear-resistant brazing coating after welding in Comparative Example 2 of the present invention. Detailed Implementation

[0024] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. However, those skilled in the art will understand that the embodiments described below are some embodiments of the present invention, but not all embodiments, and are only used to illustrate the present invention, and should not be regarded as limiting the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Where the manufacturers of reagents or instruments are not specified, they are all conventional products that can be purchased commercially.

[0025] The first aspect of the present invention provides a method for preparing a diamond wear-resistant brazing coating, comprising the following steps: The venting and expansion-limiting brazing material is placed on the surface of the steel substrate to be brazed, and then heated and brazed. The venting and expansion-limiting brazing coating material includes a metal mesh and several adhesive brazing strips that are spaced apart from each other and contain diamond and organic components. The gap between any two adjacent adhesive brazing strips is 0.5-1.5 mm. During brazing, the adhesive brazing strips are located between the steel substrate and the metal mesh.

[0026] This invention employs several spaced adhesive solder strips for brazing, and by rationally controlling the gap between adjacent adhesive solder strips, a continuous venting network channel can be formed, effectively reducing surface pits caused by rapid evaporation and bubbling of organic components. By placing a metal mesh on top of the adhesive solder strips, a flexible expansion-limiting effect is provided on the adhesive solder while ensuring the venting channel remains open, suppressing bubbling, warping, and local protrusions. During the brazing process, most of the gas is discharged from the gaps, and the metal mesh effectively prevents bulging of the remaining small number of tiny air bubbles. Through the synergistic effect of the venting channel and the top metal mesh, the surface of the brazed coating is smooth and free of pits.

[0027] Traditional processes for improving coating surface quality typically require extended heating and holding times, which not only fail to improve surface quality but also increase the risk of thermal damage to diamond. The method of this invention can reduce the risk of thermal damage to diamond caused by extended heating and holding times and can significantly improve the surface quality and wear resistance of the post-weld coating.

[0028] The gap between adjacent adhesive solder strips has a significant impact on the surface quality of the post-weld coating. If the gap is too small, the venting effect is poor, resulting in poor surface quality and wear resistance of the post-weld coating. If the gap is too large, it can easily lead to material shortage at the gap after welding, forming a depression and affecting wear resistance. This invention controls the gap between any two adjacent adhesive solder strips to 0.5-1.5mm (for example, it can be any single value or a range of any two values ​​from 0.5mm, 0.8mm, 1.0mm, 1.2mm, to 1.5mm). This ensures effective venting without causing material shortage at the gap after welding, effectively improving the surface quality and wear resistance of the post-weld coating.

[0029] In some specific embodiments of the present invention, several adhesive solder strips spaced apart from each other are parallel to each other.

[0030] In some specific embodiments of the present invention, the venting and expansion-limiting brazing material further includes a metal sheet, and several adhesive brazing strips are located between the metal sheet and the metal mesh; during brazing, the metal sheet contacts the surface of the steel substrate to be brazed.

[0031] In some specific embodiments of the present invention, the adhesive solder strip includes a first adhesive solder strip fixed on a metal sheet and a second adhesive solder strip fixed on a metal mesh, wherein the metal sheet and the first adhesive solder strip constitute a lower strip assembly (e.g., ...). Figure 2 As shown), the metal mesh and the second adhesive solder strip constitute the upper strip assembly (such as...). Figure 1 As shown), the upper strip assembly is fastened onto the lower strip assembly, so that the first adhesive solder strip and the second adhesive solder strip are arranged alternately (as shown). Figure 3 and Figure 4 (As shown).

[0032] The metal sheet serves two purposes: first, it provides support, facilitating the assembly and transfer of the venting and expansion-limiting brazing coating material before brazing; second, it allows for flexible adjustment of the gap between the adhesive brazing strips through the interlocking of the upper and lower strip components. By using components of different thicknesses and gaps in the upper and lower layers, combinations with different gaps can be created, making it convenient to use.

[0033] In some specific embodiments of the present invention, the method for preparing a diamond wear-resistant brazing coating specifically includes the following steps: S1. Several strips of the first adhesive solder are bonded at intervals onto a metal sheet to obtain the lower strip assembly (e.g., ...). Figure 2 As shown); several second adhesive solder strips are pasted at intervals onto the metal mesh to obtain the upper strip assembly (such as...). Figure 1 (as shown) S2. Place the lower strip assembly on the surface of the steel substrate to be soldered, ensuring the metal sheet contacts the solder-coated surface of the steel substrate. Invert the upper strip assembly and insert it onto the lower strip assembly in a staggered, interlocking manner, so that the first and second adhesive solder strips are arranged alternately (e.g., ...). Figure 3 and Figure 4 As shown), and the gap between adjacent first and second adhesive solder strips is 0.5-1.5mm, for example, it can be any one value or a range of any two values ​​among 0.5mm, 0.8mm, 1.0mm, 1.2mm, and 1.5mm; S3. Heat the assembly obtained in step S2 to complete the brazing.

[0034] In some implementations, such as Figure 3 As shown, the number of second adhesive solder strips in the upper strip assembly differs from the number of first adhesive solder strips in the lower strip assembly by 1 (the second adhesive solder strip may have one more or one less than the first adhesive solder strip). After misalignment and insertion, the upper and lower strip assemblies are perfectly aligned, and there are no gaps between the metal mesh and the metal sheet, allowing for direct brazing. In other embodiments, such as... Figure 4 As shown, the number of second adhesive solder strips in the upper strip assembly is equal to the number of first adhesive solder strips in the lower strip assembly. The two outermost second adhesive solder strips are aligned with the edges on both sides of the metal sheet, and the two outermost first adhesive solder strips are aligned with the edges on both sides of the metal mesh. After misalignment and insertion, there is a gap in both the metal sheet and the metal mesh. Before brazing, it is necessary to fill the gaps in the metal sheet and the metal mesh with a metal sheet and a metal mesh respectively to cover the exposed adhesive solder strips.

[0035] In some specific embodiments of the present invention, the width of several adhesive solder strips (including the first adhesive solder strip and the second adhesive solder strip) is independently 3-8 mm. For example, it can be any one value or a range of any two values ​​among 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, and 8 mm. If the width of the adhesive solder strip is too small, more adhesive solder strips are required, which will make the operation more cumbersome. In addition, if the gap remains unchanged, it is easy to cause material shortage at the gap. If the width of the adhesive solder strip is too wide, it will affect the venting effect, resulting in a decrease in the surface quality and wear resistance of the coating.

[0036] In some specific embodiments of the present invention, the length of the adhesive solder strip is consistent with the dimensions of the metal sheet and the metal mesh along the length direction of the adhesive solder strip.

[0037] In some specific embodiments of the present invention, the thickness of several adhesive solder strips is independently 2-8 mm, for example, it can be any one value or a range of any two values ​​among 2 mm, 4 mm, 6 mm and 8 mm.

[0038] In some specific embodiments of the present invention, several adhesive solder strips each independently comprise an organic binder, resin, diamond particles, and solder powder. As an example, the solder powder used includes nickel-based solder powder.

[0039] In some specific embodiments of the present invention, the metal mesh includes any one of pure copper mesh, copper alloy mesh, Ni-based non-crystalline mesh, and silver alloy mesh.

[0040] In some specific embodiments of the present invention, the thickness of the metal mesh is 0.2-1 mm, for example, it can be any one value or a range of any two values ​​among 0.2 mm, 0.4 mm, 0.6 mm, 0.8 mm, and 1 mm. Since the metal mesh will melt and dissolve into the coating matrix during the brazing process, an excessively thick metal mesh will affect the composition of the coating, so the thickness of the metal mesh needs to be controlled.

[0041] In some specific embodiments of the present invention, the metal sheet includes any one of pure copper sheet, copper alloy sheet, Ni-based non-crystalline wafer, and silver alloy sheet.

[0042] In some specific embodiments of the present invention, the thickness of the metal sheet is 0.2-1mm. For example, it can be any one value or a range of any two values ​​among 0.2mm, 0.4mm, 0.6mm, 0.8mm, and 1mm. Since the metal sheet will melt and dissolve into the coating matrix during the brazing process, if the metal sheet is too thick, it will affect the composition of the coating. Therefore, the thickness of the metal mesh needs to be controlled.

[0043] A second aspect of the present invention provides a diamond wear-resistant brazing coating, which is prepared by the method described in any one of the foregoing embodiments. The diamond wear-resistant brazing coating provided by the present invention contains diamond particles and organic components, and the coating surface is smooth, without pits, has high surface quality, and good wear resistance.

[0044] The following detailed description of some embodiments of the present invention is provided in conjunction with specific application examples. Unless otherwise specified, all raw materials used in the embodiments can be obtained commercially available.

[0045] Example 1 S1. Reference Figure 2 The structure consists of three 3mm wide and 8mm thick first adhesive solder strips bonded to a 0.2mm thick pure copper sheet, with a 4mm spacing between adjacent first adhesive solder strips, forming a lower strip assembly; wherein the composition of the first adhesive solder strip is: 7wt.% styrene-butadiene-styrene block copolymer (SBS), 2wt.% terpene resin, 8wt.% diamond particles and 83wt.% B-Ni2 solder powder; Reference Figure 1 The structure consists of three second adhesive solder strips, each 3mm wide and 8mm thick, bonded to a 0.2mm thick pure copper mesh. The spacing between two adjacent second adhesive solder strips is 4mm, forming an upper strip assembly. The composition of the second adhesive solder strips is the same as that of the first adhesive solder strip. S2. Place the lower strip assembly on the brazing-coated surface of the 42CrMo steel substrate, according to... Figure 4 The upper strip assembly is inverted in the middle, so that the upper and lower strip assemblies are staggered and interlocked in a gap manner, and the gap between adjacent first adhesive solder strips and second adhesive solder strips is 0.5mm; S3. After the mating assembly is completed, fill the lower gap with a 0.2mm thick pure copper sheet and the upper gap with a 0.2mm thick pure copper mesh to cover the exposed adhesive solder strip; then perform induction brazing at a temperature of 1050℃ for 15s.

[0046] Example 2 S1. Reference Figure 2 The structure in the example involves attaching three first adhesive solder strips, each 8 mm wide and 2 mm thick, to a 1 mm thick B-Ni2 non-wafer. The spacing between two adjacent first adhesive solder strips is 11 mm, forming a lower strip assembly. The composition of the first adhesive solder strips is the same as in Example 1. Reference Figure 1 The structure consists of three second adhesive solder strips, each 8 mm wide and 2 mm thick, bonded to a 1 mm thick B-Ni2 non-wafer mesh. The spacing between two adjacent second adhesive solder strips is 11 mm, forming an upper strip assembly. The composition of the second adhesive solder strips is the same as that of the first adhesive solder strips. S2. Place the lower strip assembly on the brazing-coated surface of the 42CrMo steel substrate, according to... Figure 4 The upper strip assembly is inverted in the middle, so that the upper and lower strip assemblies are staggered and interlocked in a gap manner, and the gap between adjacent first adhesive solder strips and second adhesive solder strips is 1.5mm; S3. After the interlocking assembly is completed, fill the lower layer gap with a 1mm thick B-Ni2 non-chip mesh and fill the upper layer gap with a 1mm thick B-Ni2 non-chip mesh to cover the exposed adhesive solder strip; then perform soldering, with the soldering conditions the same as in Example 1.

[0047] Comparative Example 1 S1. Reference Figure 2The structure in the example involves attaching three first adhesive solder strips, each 8 mm wide and 2 mm thick, to a 1 mm thick B-Ni2 non-wafer. The spacing between two adjacent first adhesive solder strips is 13 mm, forming a lower strip assembly. The composition of the first adhesive solder strips is the same as in Example 2. Reference Figure 1 The structure consists of three second adhesive solder strips, each 8 mm wide and 2 mm thick, bonded to a 1 mm thick B-Ni2 non-wafer mesh. The spacing between two adjacent second adhesive solder strips is 13 mm, forming an upper strip assembly. The composition of the second adhesive solder strips is the same as that of the first adhesive solder strip. S2. Place the lower strip assembly on the brazing-coated surface of the 42CrMo steel substrate, according to... Figure 4 The upper strip assembly is inverted in the middle, so that the upper and lower strip assemblies are staggered and interlocked in a gap manner, and the gap between the adjacent first adhesive solder strip and the second adhesive solder strip is 2.5mm; S3. After the interlocking assembly is completed, fill the lower layer gap with a 1mm thick B-Ni2 non-chip mesh and fill the upper layer gap with a 1mm thick B-Ni2 non-chip mesh to cover the exposed adhesive solder strip; then perform soldering, with the soldering conditions the same as in Example 2.

[0048] Comparative Example 2 A 55.5 mm wide and 2 mm thick sheet of adhesive brazing filler metal was placed on the brazing surface of a 42CrMo steel substrate, with no gaps between the adhesive filler metal sheets. The adhesive brazing filler metal consisted of 7 wt.% styrene-butadiene-styrene block copolymer (SBS), 2 wt.% terpene resin, 8 wt.% diamond particles, and 83 wt.% B-Ni2 brazing filler powder. Then, brazing was performed under the same conditions as in Example 2.

[0049] Comparative Example 3 Comparative Example 3 is similar to Comparative Example 2, except that: a 1mm thick B-Ni2 non-crystal sheet is placed on one side of a 55.5mm wide and 2mm thick sheet of solder, and a 1mm thick B-Ni2 non-crystal mesh is placed on the other side. It is then placed on the solder coating surface of a 42CrMo steel substrate so that the B-Ni2 non-crystal sheet contacts the surface of the steel substrate to be soldered, and then solder coating is performed; all other conditions are the same as those in Comparative Example 2.

[0050] Test case The surface quality of the diamond wear-resistant brazing coating in each embodiment and comparative example was observed, and its wear resistance was tested. The test was conducted using the rubber wheel method of JB / T 7705-1995 Loose Abrasive Wear Test Method. The test results are shown in Table 1.

[0051] Table 1

[0052] Depend on Figure 5 , Figure 6 , Figure 7 As shown in Table 1, the diamond wear-resistant brazing coating prepared by the method of the present invention has a smooth surface without pits and good wear resistance. However, in Comparative Example 1, the gap between the adhesive brazing strips is too large, resulting in obvious pits at the weld seam after welding, which reduces the surface quality and wear resistance of the coating. In Comparative Example 2, due to the lack of gaps, venting channels, and metal mesh on top of the adhesive brazing strip, the rapid volatilization and bubbling of organic components during brazing caused a large number of pits on the coating surface, significantly reducing wear resistance. Comparative Example 3 has more surface pits, but fewer than Comparative Example 2, but significantly more than Example 2. Its wear resistance is significantly lower than that of the Example 2, but slightly better than Comparative Example 2.

[0053] Although the present invention has been illustrated and described with specific embodiments, it should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; those skilled in the art should understand that modifications can be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein, without departing from the spirit and scope of the present invention; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention; therefore, this means that all such substitutions and modifications that fall within the scope of the present invention are included in the appended claims.

Claims

1. A method for preparing a diamond wear-resistant brazing coating, characterized in that, Includes the following steps: The venting and expansion-limiting brazing material is placed on the surface of the steel substrate to be brazed, and then heated and brazed. The venting and expansion-limiting brazing material includes a metal mesh and several adhesive brazing strips spaced apart from each other, with the gap between any two adjacent adhesive brazing strips being 0.5-1.5 mm; during brazing, the adhesive brazing strips are all located between the steel substrate and the metal mesh.

2. The method for preparing diamond wear-resistant brazing coating according to claim 1, characterized in that, The venting and expansion-limiting brazing material also includes a metal sheet, and several adhesive brazing strips are located between the metal sheet and the metal mesh; during brazing, the metal sheet contacts the surface of the steel substrate to be brazed.

3. The method for preparing the diamond wear-resistant brazing coating according to claim 2, characterized in that, The adhesive solder strip includes a first adhesive solder strip fixed on the metal sheet and a second adhesive solder strip fixed on the metal mesh. The metal sheet and the first adhesive solder strip constitute a lower strip assembly, and the metal mesh and the second adhesive solder strip constitute an upper strip assembly. The upper strip assembly is fastened to the lower strip assembly, so that the first adhesive solder strip and the second adhesive solder strip are arranged alternately.

4. The method for preparing the diamond wear-resistant brazing coating according to claim 3, characterized in that, The preparation method of the diamond wear-resistant brazing coating specifically includes the following steps: S1. A plurality of first adhesive solder strips are bonded at intervals onto the metal sheet to obtain the lower strip assembly; a plurality of second adhesive solder strips are bonded at intervals onto the metal mesh to obtain the upper strip assembly; S2. Place the lower strip assembly on the surface of the steel substrate to be soldered, invert the upper strip assembly, and insert it into the lower strip assembly in a staggered manner, so that the first adhesive solder strip and the second adhesive solder strip are arranged alternately, and the gap between adjacent first adhesive solder strips and second adhesive solder strips is 0.5-1.5mm. S3. Heat the assembly obtained in step S2 to complete the brazing.

5. The method for preparing a diamond wear-resistant brazing coating according to any one of claims 1-4, characterized in that, The width of each of the aforementioned adhesive solder strips is independently 3-8 mm.

6. The method for preparing a diamond wear-resistant brazing coating according to any one of claims 1-4, characterized in that, The thickness of each of the aforementioned adhesive solder strips is independently 2-8 mm.

7. The method for preparing a diamond wear-resistant brazing coating according to any one of claims 1-4, characterized in that, Each of the aforementioned adhesive brazing strips independently comprises an organic binder, resin, diamond particles, and brazing powder.

8. The method for preparing a diamond wear-resistant brazing coating according to any one of claims 1-4, characterized in that, It meets at least one of the following characteristics: (1) The metal mesh includes any one of pure copper mesh, copper alloy mesh, Ni-based non-crystalline mesh, and silver alloy mesh; (2) The thickness of the metal mesh is 0.2-1mm.

9. The method for preparing a diamond wear-resistant brazing coating according to any one of claims 2-4, characterized in that, It meets at least one of the following characteristics: (1) The metal sheet includes any one of pure copper sheet, copper alloy sheet, Ni-based non-crystalline sheet, and silver alloy sheet; (2) The thickness of the metal sheet is 0.2-1mm.

10. A diamond wear-resistant brazing coating, characterized in that, The diamond wear-resistant brazing coating is prepared by the method described in any one of claims 1-9.

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