High-temperature-resistant and wear-resistant diamond saw blade and preparation process thereof

Abstract

The invention discloses a high-temperature-resistant and wear-resistant diamond saw blade. The high-temperature-resistant and wear-resistant diamond saw blade comprises a base body and diamond tool bits, the diamond tool bit is manufactured 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, 20-50 parts of iron, 5-30 parts of copper, 5-15 parts of nickel, 3-12 parts of cobalt, 2-8 parts of tin, 5-10 parts of tungsten carbide powder, 3-10 parts of chromium, 1-5 parts of manganese, 5-8 parts of diamond and 0.1-35 parts of active powder, and the active powder is composed of, by mass, 45-100 parts of tin-copper alloy powder and 35-100 parts of cobalt-chromium-manganese alloy powder. The tin-copper alloy powder is added, so that the heat conductivity and strength of the tool bit can be improved, the cobalt-chromium-manganese alloy powder can improve the wear resistance of the tool bit, the iron-based matrix has better holding force on diamond, and the iron-based matrix has better heat conductivity.

Description

Technical Field

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

[0002] High temperature wear-resistant diamond saw blade is a kind of sawing tool, which is widely used in the cutting of hard and brittle materials such as concrete, refractory materials, stone, ceramics, etc. High temperature wear-resistant diamond saw blade is mainly composed of two parts: matrix and cutter head. The cutter head is generally composed of matrix alloy and a certain proportion of diamond particles. The matrix alloy holds the diamond particles to achieve the cutting of diamond particles and stone materials. The iron-based matrix has excellent economy, but the high temperature wear resistance is not good. Long-term cutting is prone to tooth burning. In order to improve the cutting performance and service life of the high temperature wear-resistant diamond saw blade, a high temperature wear-resistant 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 temperature resistant and wear resistant 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-temperature-resistant and wear-resistant diamond saw blade, comprising: a matrix and a diamond cutter head; the diamond cutter head is made by mixing matrix alloy powder uniformly, cold pressing and hot pressing sintering; the matrix alloy powder used in the diamond cutter head is composed of: 20-50 parts of iron, 5-30 parts of copper, 5-15 parts of nickel, 3-12 parts of cobalt, 2-8 parts of tin, 5-10 parts of tungsten carbide powder, 3-10 parts of chromium, 1-5 parts of manganese, 5-8 parts of diamond and 0.1-35 parts of active powder, and the active powder is composed of the following components in parts by weight: 45-100 parts of tin-copper alloy powder and 35-100 parts of cobalt-chromium-manganese alloy powder.

[0005] Furthermore, the cobalt-chromium-manganese alloy powder contains 20 to 50 parts of cobalt, 20 to 50 parts of chromium, 5 to 15 parts of manganese, 3 to 8 parts of tungsten and 1 to 5 parts of carbon.

[0006] The method for manufacturing and processing a high temperature resistant and wear resistant diamond saw blade is characterized by comprising the following steps: A. Calculate by mass, weigh 45-100 parts of tin-copper alloy powder and 35-100 parts of cobalt-chromium-manganese alloy powder, put them into a mixer and mix them evenly to obtain active powder for later use; B. Weigh 20-50 parts of iron, 5-30 parts of copper, 5-15 parts of nickel, 3-12 parts of cobalt, 2-8 parts of tin, 5-10 parts of tungsten carbide powder, 3-10 parts of chromium and 1-5 parts of manganese according to mass percentage, add the above mixed powders into a mixer and mix them evenly to obtain a matrix powder for later use; C. Take diamond and the matrix powder obtained in step B at a volume ratio of 5-10:3-5, put them into a mixer and mix them evenly to obtain blade powder for later use; D. The blade powder obtained in step C is loaded into a graphite mold, and then placed in a muffle furnace for hot pressing and sintering at a sintering temperature of 820° C., a sintering pressure of 40 MPa, and a sintering time of 210 s to obtain a blade; the above steps are repeated to obtain multiple blades; E. Weld the cutter head obtained in step D to the substrate to prepare a saw blade with a diameter of 105 mm.

[0007] Compared with the prior art, the present application can obtain the following technical effects: The invention adds tin-copper alloy powder to improve the thermal conductivity and strength of the cutter head, and the cobalt-chromium-manganese alloy powder can improve the wear resistance of the cutter head, so that the iron-based matrix has better holding force on diamonds and better thermal conductivity.

[0008] 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

[0009] 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

[0010] The method for manufacturing and processing a high temperature resistant and wear resistant diamond saw blade is characterized by comprising the following steps: A. Calculate by mass, weigh 45 parts of tin-copper alloy powder and 55 parts of cobalt-chromium-manganese alloy powder, put them into a mixer and mix them evenly to obtain active powder for later use; B. Weigh 35 parts of iron, 30 parts of copper, 10 parts of nickel, 5 parts of cobalt, 4 parts of tin, 6 parts of tungsten carbide powder, 8 parts of chromium and 2 parts of manganese according to mass percentage, add the above mixed powders into a mixer and mix them evenly to obtain a carcass powder for later use; C. Measure diamond and the matrix powder obtained in step B at a volume ratio of 6:4, put them into a mixer and mix them evenly to obtain blade powder for later use; D. The blade powder obtained in step C is loaded into a graphite mold, and then placed in a muffle furnace for hot pressing and sintering at a sintering temperature of 820° C., a sintering pressure of 40 MPa, and a sintering time of 210 s to obtain a blade; the above steps are repeated to obtain multiple blades; E. Weld the cutter head obtained in step D to the substrate to prepare a saw blade with a diameter of 105 mm. Example 2

[0011] The method for manufacturing and processing a high temperature resistant and wear resistant diamond saw blade is characterized by comprising the following steps: A. Calculate by mass, weigh 65 parts of tin-copper alloy powder and 35 parts of cobalt-chromium-manganese alloy powder, put them into a mixer and mix them evenly to obtain active powder for later use; B. Weigh 35 parts of iron, 22 parts of copper, 10 parts of nickel, 10 parts of cobalt, 5 parts of tin, 6 parts of tungsten carbide, 10 parts of chromium and 2 parts of manganese according to mass percentage, add the above mixed powders into a mixer and mix evenly to obtain a carcass powder for later use; C. Measure diamond and the matrix powder obtained in step B at a volume ratio of 6:4, put them into a mixer and mix them evenly to obtain blade powder for later use; D. The blade powder obtained in step C is loaded into a graphite mold, and then placed in a muffle furnace for hot pressing and sintering at a sintering temperature of 820° C., a sintering pressure of 40 MPa, and a sintering time of 210 s to obtain a blade; the above steps are repeated to obtain multiple blades; E. Weld the cutter head obtained in step D to the substrate to prepare a saw blade with a diameter of 105 mm. Example 3

[0012] The method for manufacturing and processing a high temperature resistant and wear resistant diamond saw blade is characterized by comprising the following steps: A. Calculate by mass: weigh 55 parts of tin-copper alloy powder and 45 parts of cobalt-chromium-manganese alloy powder, put them into a mixer and mix them evenly to obtain active powder for later use; B. Weigh 30 parts of iron, 28 parts of copper, 10 parts of nickel, 12 parts of cobalt, 8 parts of tin, 10 parts of tungsten carbide powder, 10 parts of chromium and 2 parts of manganese according to mass percentage, add the above mixed powders into a mixer and mix them evenly to obtain a carcass powder for later use; C. Measure diamond and the matrix powder obtained in step B at a volume ratio of 6:4, put them into a mixer and mix them evenly to obtain blade powder for later use; D. The blade powder obtained in step C is loaded into a graphite mold, and then placed in a muffle furnace for hot pressing and sintering at a sintering temperature of 820° C., a sintering pressure of 40 MPa, and a sintering time of 210 s to obtain a blade; the above steps are repeated to obtain multiple blades; E. Weld the cutter head obtained in step D to the substrate to prepare a saw blade with a diameter of 105 mm.

[0013]

[0014] The three examples show that adding active powder to the iron-based matrix and appropriately increasing the proportion of tin-copper alloy powder and cobalt-chromium-manganese alloy powder in the active powder can improve the wear resistance and thermal conductivity of the cutter head. In Example 1, the content of cobalt-chromium-manganese alloy powder accounts for a moderate proportion of the total active powder, and the cobalt, chromium, and manganese contents in the active powder plus the cobalt, chromium, and manganese contents in the iron-based matrix can improve the wear resistance of the cutter head. The moderate proportion of tin-copper alloy powder can improve the thermal conductivity, resulting in an increase in the hardness of the cutter head, and significantly improving the dry cutting life and wet cutting life; in Example 2, the cobalt-chromium-manganese alloy powder The content of in the total active powder is reduced, the content of cobalt, chromium and manganese in the iron-based matrix is ​​also reduced, and the content of tin-copper alloy powder is increased. Experiments show that although the thermal conductivity is improved, the wear resistance is reduced compared with Example 1, which leads to the improvement of the hardness of the cutter head. The dry cutting life and wet cutting life are not significantly improved compared with the performance of the existing iron-based cutter head. It can be concluded that the content of cobalt, chromium and manganese in the active powder combined with the content of cobalt, chromium and manganese in the iron-based matrix can improve the hardness of the cutter head, and the content of cobalt-chromium-manganese alloy powder and tin-copper alloy powder is balanced, resulting in a more obvious improvement in the performance of the cutter head.

[0015] The invention adds tin-copper alloy powder to improve the thermal conductivity and strength of the cutter head, and the cobalt-chromium-manganese alloy powder can improve the wear resistance of the cutter head, so that the iron-based matrix has better holding force on diamonds and better thermal conductivity.

[0016] 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 temperature resistant and wear resistant 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: 20-50 parts of iron, 5-30 parts of copper, 5-15 parts of nickel, 3-12 parts of cobalt, 2-8 parts of tin, 5-10 parts of tungsten carbide powder, 3-10 parts of chromium, 1-5 parts of manganese, 5-8 parts of diamond and 0.1-35 parts of active powder, and the active powder is composed of the following components in the following weight proportions: 45-100 parts of tin-copper alloy powder and 35-100 parts of cobalt-chromium-manganese alloy powder.

2. The high temperature and wear resistant diamond saw blade according to claim 1, characterized in that: The cobalt-chromium-manganese alloy powder contains 20 to 50 parts of cobalt, 20 to 50 parts of chromium, 5 to 15 parts of manganese, 3 to 8 parts of tungsten and 1 to 5 parts of carbon.

3. A process for manufacturing the high temperature and wear resistant diamond saw blade according to claim 1, characterized in that: The following steps are involved: A. Calculate by mass, weigh 45-100 parts of tin-copper alloy powder and 35-100 parts of cobalt-chromium-manganese alloy powder, put them into a mixer and mix them evenly to obtain active powder for later use; B. Weigh 20-50 parts of iron, 5-30 parts of copper, 5-15 parts of nickel, 3-12 parts of cobalt, 2-8 parts of tin, 5-10 parts of tungsten carbide powder, 3-10 parts of chromium and 1-5 parts of manganese according to mass percentage, add the above mixed powders into a mixer and mix them evenly to obtain a matrix powder for later use; C. Take diamond and the matrix powder obtained in step B at a volume ratio of 5-10:3-5, put them into a mixer and mix them evenly to obtain blade powder for later use; D. The blade powder obtained in step C is loaded into a graphite mold, and then placed in a muffle furnace for hot pressing sintering at a sintering temperature of 820° C., a sintering pressure of 40 MPa, and a sintering time of 210 s to obtain a blade; Repeat the above steps to obtain multiple cutter heads; E. Weld the cutter head obtained in step D to the substrate to prepare a saw blade with a diameter of 105 mm.

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