High-strength diamond saw blade and preparation process thereof

Abstract

The invention discloses a high-strength diamond saw blade. The high-strength diamond saw blade comprises a base body and diamond tool bits. The diamond tool bit is prepared by uniformly mixing matrix alloy powder and then carrying out cold press molding and hot press sintering; the matrix alloy powder for the diamond tool bit comprises, by weight, 35-50 parts of iron, 5-15 parts of nickel, 3-12 parts of cobalt, 2-8 parts of tin, 5-10 parts of tungsten carbide powder, 5-8 parts of diamond and 0.1-50 parts of active powder, and the active powder comprises, by mass, 45-50 parts of tin-zinc-bronze alloy powder, 35-50 parts of manganese-titanium-chromium-boron alloy powder and 10-15 parts of copper-molybdenum-vanadium-zirconium-carbon alloy powder. Various kinds of alloy powder are added into the iron-based matrix powder, the copper molybdenum vanadium zirconium carbon alloy powder has the corrosion resistance and high strength, the manganese titanium chromium boron alloy powder has the outstanding high-temperature-resistant performance, the tin zinc bronze alloy powder has the outstanding wear-resistant performance, the tool bit manufactured through mixing has the performance, and therefore the cutting performance of the saw blade is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of saw blades, and in particular relates to a high-strength diamond saw blade. Background Art

[0002] Diamond saw blade is a sawing tool, which is widely used in cutting hard and brittle materials such as concrete, refractory materials, stone, ceramics, etc. Diamond saw blade is mainly composed of two parts: base and cutter head. The cutter head is generally composed of matrix alloy and a certain proportion of diamond particles. The diamond particles and stone materials are cut by the holding force of the matrix alloy on the diamond particles. In order to improve the cutting performance and service life of diamond saw blades and reduce the production cost of diamond saw blades, a high-strength diamond saw blade is provided. Summary of the invention

[0003] In view of this, the technical problem to be solved by the present invention is to provide a high-strength diamond saw blade, which solves the problem of poor cutting performance of cutting saw blades in the prior art.

[0004] In order to solve the above technical problems, the present invention discloses a high-strength diamond saw blade, comprising: a matrix and a diamond bit; the diamond bit is made by mixing matrix alloy powder uniformly, cold pressing and hot pressing sintering; the matrix alloy powder used for the diamond bit is composed of: 35-50 parts of iron, 5-15 parts of nickel, 3-12 parts of cobalt, 2-8 parts of tin, 5-10 parts of tungsten carbide powder, 5-8 parts of diamond and 0.1-50 parts of active powder by weight, and the active powder is composed of the following components by weight: 45-50 parts of tin-zinc bronze alloy powder, 35-50 parts of manganese-titanium-chromium-boron alloy powder, and 10-15 parts of copper-molybdenum-vanadium-zirconium-carbon alloy powder.

[0005] Furthermore, the matrix alloy powder used in the diamond segment is composed of 48-50 parts of iron, 8-10 parts of nickel, 7-12 parts of cobalt, 5-8 parts of tin, 5-8 parts of tungsten carbide powder, 6-8 parts of diamond and 15-35 parts of active powder.

[0006] Furthermore, the active powder is 27-32 parts, including 45-48 parts of tin-zinc bronze alloy powder, 35-45 parts of manganese-titanium-chromium-boron alloy powder, and 12-15 parts of copper-molybdenum-vanadium-zirconium-carbon alloy powder.

[0007] The method for manufacturing and processing a high-strength diamond saw blade is characterized in that the method comprises the following processing steps: Step 1, manufacturing a cutter head: S1, weighing raw materials: weighing matrix raw materials and diamond particles according to a ratio; S2, mixing: put the weighed raw materials and diamond particles into a mixer, add a granulating agent, dry mix for 4 hours, and then add a solvent and wet mix for 4 hours until fully mixed; S3, granulation: pour the mixture obtained in step S2 into the hopper at the top of the granulator, and then convey it to the inside of the granulator by the screw conveyor to form granules; S4, cold pressing: pouring the particles obtained in step S3 into a cold pressing mold, and forming a cutter head blank by cold pressing; S5, hot pressing and sintering: the cutter head blank is placed into a graphite mold, and sent to a hot pressing and sintering machine for hot pressing and sintering to obtain a preliminary finished cutter head; S6, grinding and forming: using a deburring machine to remove burrs on the preliminary finished product of the cutter head, and then grinding to obtain the final cutter head; Step 2, making a matrix: select a 65Mn steel plate, quench the 65Mn steel plate by a pressure quenching process, fix the 65Mn steel plate with a quenching fixture, then put the 65Mn steel plate into a salt bath furnace for heating, then pressurize and lock the 65Mn steel plate with a mechanical fixture, temper it at medium temperature for 4 to 5 hours, immerse it in oil within 10 seconds after it comes out of the furnace to cool it down, and obtain the final matrix for standby use; Step 3: Welding: Use a high-frequency welding machine to weld the prepared cutter head to the substrate, and then obtain a diamond saw blade after testing, grinding, sharpening and polishing.

[0008] Compared with the prior art, the present application can obtain the following technical effects: The present invention adds a variety of alloy powders to the iron-based matrix powder. The copper-molybdenum-vanadium-zirconium-carbon alloy powder has the properties of corrosion resistance and high strength, the manganese-titanium-chromium-boron alloy powder has the outstanding property of high temperature resistance, and the tin-zinc-bronze alloy powder has the outstanding property of wear resistance. The mixed cutter head has all these properties, thereby improving the cutting performance of the saw blade.

[0009] Of course, any product implementing this application does not necessarily need to achieve all of the technical effects described above at the same time. DETAILED DESCRIPTION

[0010] The following will explain the implementation methods of the present application in detail with reference to examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Example 1

[0011] The method for manufacturing and processing a high-strength diamond saw blade is characterized in that the method comprises the following processing steps: Step 1, manufacturing a cutter head: S1, weighing raw materials: the composition of the matrix alloy powder used for the diamond cutter head is: 48 parts of iron, 9 parts of nickel, 7 parts of cobalt, 5 parts of tin, 5 parts of tungsten carbide powder, 8 parts of diamond and 18 parts of active powder, and the active powder is composed of the following components in parts by mass: 45 parts of tin-zinc bronze alloy powder, 40 parts of manganese-titanium-chromium-boron alloy powder, and 15 parts of copper-molybdenum-vanadium-zirconium-carbon alloy powder; S2, mixing: put the weighed raw materials and diamond particles into a mixer, add a granulating agent, dry mix for 4 hours, and then add a solvent and wet mix for 4 hours until fully mixed; S3, granulation: pour the mixture obtained in step S2 into the hopper at the top of the granulator, and then convey it to the inside of the granulator by the screw conveyor to form granules; S4, cold pressing: pouring the particles obtained in step S3 into a cold pressing mold, and forming a cutter head blank by cold pressing; S5, hot pressing and sintering: the cutter head blank is placed into a graphite mold, and sent to a hot pressing and sintering machine for hot pressing and sintering to obtain a preliminary finished cutter head; S6, grinding and forming: using a deburring machine to remove burrs on the preliminary finished product of the cutter head, and then grinding to obtain the final cutter head; Step 2, making a matrix: select a 65Mn steel plate, quench the 65Mn steel plate by a pressure quenching process, fix the 65Mn steel plate with a quenching fixture, then put the 65Mn steel plate into a salt bath furnace for heating, then pressurize and lock the 65Mn steel plate with a mechanical fixture, temper it at medium temperature for 4 to 5 hours, immerse it in oil within 10 seconds after it comes out of the furnace to cool it down, and obtain the final matrix for standby use; Step 3: Welding: Use a high-frequency welding machine to weld the prepared cutter head to the substrate, and then obtain a diamond saw blade after testing, grinding, sharpening and polishing. Example 2

[0012] The method for manufacturing and processing a high-strength diamond saw blade is characterized in that the method comprises the following processing steps: Step 1, manufacturing a cutter head: S1, weighing raw materials: the composition of the matrix alloy powder used for the diamond cutter head is: 45 parts of iron, 5 parts of nickel, 10 parts of cobalt, 5 parts of tin, 7 parts of tungsten carbide powder, 8 parts of diamond and 20 parts of active powder, and the active powder is composed of the following components in parts by mass: 45 parts of tin-zinc bronze alloy powder, 41 parts of manganese-titanium-chromium-boron alloy powder, and 14 parts of copper-molybdenum-vanadium-zirconium-carbon alloy powder; S2, mixing: put the weighed raw materials and diamond particles into a mixer, add a granulating agent, dry mix for 4 hours, and then add a solvent and wet mix for 4 hours until fully mixed; S3, granulation: pour the mixture obtained in step S2 into the hopper at the top of the granulator, and then convey it to the inside of the granulator by the screw conveyor to form granules; S4, cold pressing: pouring the particles obtained in step S3 into a cold pressing mold, and forming a cutter head blank by cold pressing; S5, hot pressing and sintering: the cutter head blank is placed into a graphite mold, and sent to a hot pressing and sintering machine for hot pressing and sintering to obtain a preliminary finished cutter head; S6, grinding and forming: using a deburring machine to remove burrs on the preliminary finished product of the cutter head, and then grinding to obtain the final cutter head; Step 2, making a matrix: select a 65Mn steel plate, quench the 65Mn steel plate by a pressure quenching process, fix the 65Mn steel plate with a quenching fixture, then put the 65Mn steel plate into a salt bath furnace for heating, then pressurize and lock the 65Mn steel plate with a mechanical fixture, temper it at medium temperature for 4 to 5 hours, immerse it in oil within 10 seconds after it comes out of the furnace to cool it down, and obtain the final matrix for standby use; Step 3: Welding: Use a high-frequency welding machine to weld the prepared cutter head to the substrate, and then obtain a diamond saw blade after testing, grinding, sharpening and polishing. Example 3

[0013] The method for manufacturing and processing a high-strength diamond saw blade is characterized in that the method comprises the following processing steps: Step 1, manufacturing a cutter head: S1, weighing raw materials: the composition of the matrix alloy powder used for the diamond cutter head is: 43 parts of iron, 7 parts of nickel, 12 parts of cobalt, 6 parts of tin, 10 parts of tungsten carbide powder, 8 parts of diamond and 24 parts of active powder, and the active powder is composed of the following components in parts by mass: 45 parts of tin-zinc bronze alloy powder, 43 parts of manganese-titanium-chromium-boron alloy powder, and 12 parts of copper-molybdenum-vanadium-zirconium-carbon alloy powder; S2, mixing: put the weighed raw materials and diamond particles into a mixer, add a granulating agent, dry mix for 4 hours, and then add a solvent and wet mix for 4 hours until fully mixed; S3, granulation: pour the mixture obtained in step S2 into the hopper at the top of the granulator, and then convey it to the inside of the granulator by the screw conveyor to form granules; S4, cold pressing: pouring the particles obtained in step S3 into a cold pressing mold, and forming a cutter head blank by cold pressing; S5, hot pressing and sintering: the cutter head blank is placed into a graphite mold, and sent to a hot pressing and sintering machine for hot pressing and sintering to obtain a preliminary finished cutter head; S6, grinding and forming: using a deburring machine to remove burrs on the preliminary finished product of the cutter head, and then grinding to obtain the final cutter head; Step 2, making a matrix: select a 65Mn steel plate, quench the 65Mn steel plate by a pressure quenching process, fix the 65Mn steel plate with a quenching fixture, then put the 65Mn steel plate into a salt bath furnace for heating, then pressurize and lock the 65Mn steel plate with a mechanical fixture, temper it at medium temperature for 4 to 5 hours, immerse it in oil within 10 seconds after it comes out of the furnace to cool it down, and obtain the final matrix for standby use; Step 3: Welding: Use a high-frequency welding machine to weld the prepared cutter head to the substrate, and then obtain a diamond saw blade after testing, grinding, sharpening and polishing. The examples show that with the diamond content unchanged, by reducing the iron content on the basis of the iron-based matrix powder and increasing the copper-molybdenum-vanadium-zirconium-carbon alloy powder content in the active powder, the hardness of the cutter head can be improved, and its wear resistance and high temperature resistance are greatly improved, and the dry cutting life and wet cutting life are also improved accordingly.

[0014] The present invention adds a variety of alloy powders to the iron-based matrix powder. The copper-molybdenum-vanadium-zirconium-carbon alloy powder has the properties of corrosion resistance and high strength, the manganese-titanium-chromium-boron alloy powder has the outstanding property of high temperature resistance, and the tin-zinc-bronze alloy powder has the outstanding property of wear resistance. The mixed cutter head has all these properties, thereby improving the cutting performance of the saw blade.

[0015] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A high-strength diamond saw blade, comprising: Substrate and diamond bit; The diamond segment is made by mixing matrix alloy powder uniformly, cold pressing and hot pressing and sintering. The invention is characterized in that, in terms of weight proportions, the matrix alloy powder used for the diamond tool segment is composed of: 35-50 parts of iron, 5-15 parts of nickel, 3-12 parts of cobalt, 2-8 parts of tin, 5-10 parts of tungsten carbide powder, 5-8 parts of diamond and 0.1-50 parts of active powder, and the active powder is composed of the following components in parts by weight: 45-50 parts of tin-zinc bronze alloy powder, 35-50 parts of manganese-titanium-chromium-boron alloy powder, and 10-15 parts of copper-molybdenum-vanadium-zirconium-carbon alloy powder.

2. The high-strength diamond saw blade according to claim 1, characterized in that: The matrix alloy powder used in the diamond cutter head is composed of 48-50 parts of iron, 8-10 parts of nickel, 7-12 parts of cobalt, 5-8 parts of tin, 5-8 parts of tungsten carbide powder, 6-8 parts of diamond and 15-35 parts of active powder.

3. The high-strength diamond saw blade according to claim 2, characterized in that: The active powder is 27-32 parts, including 45-48 parts of tin-zinc bronze alloy powder, 35-45 parts of manganese-titanium-chromium-boron alloy powder, and 12-15 parts of copper-molybdenum-vanadium-zirconium-carbon alloy powder.

4. A process for manufacturing the high-strength diamond saw blade according to claim 1, characterized in that: The process includes the following steps: Step 1, making a cutter head: S1, weighing raw materials: weighing matrix raw materials and diamond particles according to a ratio; S2, mixing: put the weighed raw materials and diamond particles into a mixer, add a granulating agent, dry mix for 4 hours, and then add a solvent and wet mix for 4 hours until fully mixed; S3, granulation: pour the mixture obtained in step S2 into the hopper at the top of the granulator, and then convey it to the inside of the granulator by the screw conveyor to form granules; S4, cold pressing: pouring the particles obtained in step S3 into a cold pressing mold, and forming a cutter head blank by cold pressing; S5, hot pressing and sintering: the cutter head blank is loaded into a graphite mold, and sent to a hot pressing and sintering machine for hot pressing and sintering to obtain a preliminary finished cutter head; S6, grinding and forming: using a deburring machine to remove burrs on the preliminary finished product of the cutter head, and then grinding to obtain the final cutter head; Step 2, making a matrix: select a 65Mn steel plate, quench the 65Mn steel plate by a pressure quenching process, fix the 65Mn steel plate with a quenching fixture, then put the 65Mn steel plate into a salt bath furnace for heating, then pressurize and lock the 65Mn steel plate with a mechanical fixture, temper it at medium temperature for 4 to 5 hours, immerse it in oil within 10 seconds after it comes out of the furnace to cool it down, and obtain the final matrix for standby use; Step 3: Welding: Use a high-frequency welding machine to weld the prepared cutter head to the substrate, and then obtain a diamond saw blade after testing, grinding, sharpening and polishing.