Integrated Ceramic Tool with Thermistor Temperature Measurement and Cutting Function and Preparation Method

Abstract

The present invention provides an integrated ceramic tool with thermistor temperature measurement and cutting functions and a preparation method thereof, which comprises a thermosensitive layer and a ceramic matrix layer; the thermosensitive layer is formed by sintering a temperature measurement material and an additive; the ceramic matrix layer is formed by sintering a matrix material, a binder and a reinforcing phase. The preparation method is to make the powders of each layer of materials, lay and compact the powders of each layer of materials layer by layer in sequence, and finally carry out spark plasma sintering (SPS). The present invention further discloses the application of the tool. By selecting temperature-sensitive materials and designing the tool structure, the present invention enables the obtained ceramic tool to meet the requirements of tool performance in industrial production in terms of Vickers hardness, flexural strength and fracture toughness, and realizes the cutting function of the ceramic tool and the real-time measurement of the cutting temperature during the cutting process.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and relates to milling processing and cutting processing, and specifically to a ceramic tool integrating thermistor temperature measurement and cutting functions and a preparation method thereof. Background Art

[0002] The information disclosed in the Background section is only intended to enhance the understanding of the overall background of the invention and is not to be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art.

[0003] Cutting temperature is an important source of information reflecting the state of mechanical processing (such as milling and cutting). Its size and dynamic changes reflect the changes in the cutting state of the tool and the changes in the processing quality of the parts. Due to the narrow contact area between the tool and the chip area, as well as the harsh cutting environment such as large stress / strain and steep temperature gradient, it is difficult for existing temperature sensors to penetrate into the cutting area and realize in-situ temperature measurement. If the cutting temperature can be monitored in real time and accurately during the cutting process, the cutting parameters can be optimized by establishing the relationship between the tool state and temperature, effectively extending the tool wear life and improving the workpiece processing accuracy, which is of great significance to the basic research of the cutting process. Summary of the invention

[0004] In order to solve the shortcomings of the prior art, the purpose of the present invention is to provide a thermistor temperature measurement and cutting function integrated ceramic tool and a preparation method and application. The ceramic tool integrates the cutting temperature measurement function and high mechanical properties, so that it can measure the cutting temperature under the premise of meeting the cutting performance requirements, that is, no additional temperature sensor is required during cutting, and the cutting temperature can be measured. It has the advantages of simple structure, small size, high hardness, high bending strength and fracture toughness, and easy installation.

[0005] In order to achieve the above-mentioned object, the present invention proposes a ceramic tool with integrated temperature measurement function and cutting function, which comprises a thermosensitive layer and a ceramic matrix layer; the thermosensitive layer is formed by sintering a temperature measurement material and an additive; the ceramic matrix layer is formed by sintering a matrix material, a binder and a reinforcement phase;

[0006] The temperature measuring material is 8YSZ, 3Y-TZP, LaMnO 3 One or more of;

[0007] The additives are ZnO, MgO, SiC, Al 2 O 3 One or more of;

[0008] The matrix material is Al 2 O 3 、Si 3 N4 , one or more of CBN;

[0009] The binder is one or more of Mo, Ni and Co;

[0010] The reinforcing phase is TiC, WC, SiC, Cr 2 O 3 、TiO 2 One or more of;

[0011] The mass percentage of the temperature measuring material in the thermosensitive layer is 50% to 100%, and the mass percentage of the additive is 0 to 5%; the mass percentage of the binder in the ceramic matrix layer is 0 to 5%, the mass percentage of the reinforcing phase is 30 to 45%, and the mass percentage of the matrix material is 50% to 70%;

[0012] The total thickness of the thermal layer accounts for 30-50% of the total tool thickness, and the total thickness of the ceramic matrix layer accounts for 50-70% of the total tool thickness; the thermal layer and the ceramic matrix layer are stacked to form a ceramic tool.

[0013] Preferably, it is composed of at least M thermosensitive layers and N ceramic substrate layers, M and N are both positive integers, and the ceramic substrate layers and the thermosensitive layers are alternately stacked.

[0014] Preferably, a thermosensitive layer is divided into a plurality of sub-thermosensitive layers, and the sub-thermosensitive layers are differentiated according to the different temperature measuring materials they consist of.

[0015] Preferably, a mixed layer is provided between the ceramic substrate layer and the thermal sensitive layer, and the raw material in the mixed layer is Al 2 O 3 、Si 3 N 4 , one or more of CBN, Ni, Co, and MgO;

[0016] After adding the mixed layer, the total thickness of the mixed layer is 5-15% of the total thickness of the ceramic tool, the total thickness of the thermal layer is 25-45% of the total tool thickness, and the thickness of the ceramic matrix layer is 50-70% of the total tool thickness.

[0017] Preferably, the ceramic cutter is square.

[0018] Preferably, the mass percentage of 8YSZ in the thermosensitive layer is 40%-80%, the mass percentage of 3Y-TZP is 0%-50%, and the mass percentage of LaMnO 3 The mass percentage of Al is 0%-50%, 2 O 3 The mass percentage is 5%-30%, the mass percentages of ZnO, MgO and SiC are 0%-15% respectively; the Al in the ceramic matrix layer 2 O3 The mass percentage is 50%-70%, Si 3 N 4 The mass percentages of CBN are 0%-20% respectively; the mass percentages of Mo, Ni, and Co are 0%-5% respectively; the mass percentage of TiC is 5%-40%; the mass percentages of WC, SiCCr 2 O 3 、TiO 2 The mass percentages are 0%-20% respectively.

[0019] The invention also discloses a method for preparing a ceramic tool with integrated thermistor temperature measurement and cutting functions, wherein each layer of material is made into powder, the powder of each layer of material is filled and compacted layer by layer in sequence, and finally spark plasma sintering (SPS) is performed.

[0020] Preferably, the specific process of making each layer of material into powder, filling and compacting the powder of each layer of material layer by layer in sequence, and finally performing spark plasma sintering (SPS) is as follows:

[0021] Each powder material is placed in a ball mill. 2 O 3 Ceramic balls are used as grinding balls, anhydrous ethanol is used as the medium, and the ball milling time is 48 hours. The suspension after ball milling is dried in a vacuum drying oven, and after drying, it is sieved through a 160-mesh sieve and sealed for later use;

[0022] Then, the corresponding powder materials are evenly mixed according to the requirements of each layer of the ceramic tool material, and the mixed powder materials are loaded into the mold layer by layer according to the predetermined order and thickness. Each layer of powder material needs to be flattened and compacted until the powder filling is completed; the compaction pressure is 4-6MPa;

[0023] Then, the mold is placed in a spark plasma sintering (SPS) furnace for hot pressing sintering at a sintering temperature of 1400-1600°C, a sintering time of 220-30 minutes, and a sintering pressure of 30-35 MPa; after sintering, a ceramic blank with high density is obtained;

[0024] The ceramic blank is cut and polished to form a cutting tool.

[0025] The present invention further discloses the application of a thermistor temperature measurement and cutting function integrated ceramic tool in cutting processing and / or milling processing, wherein the thermistor temperature measurement and cutting function integrated ceramic tool is installed on a machine tool.

[0026] The present invention further discloses a cutting machine tool, which includes a machine base, on which a cutting tool and a temperature measuring instrument are mounted. The cutting tool is a ceramic tool that integrates thermistor temperature measurement and cutting functions, and the temperature measuring instrument is connected to a thermistor layer in the ceramic tool through a wire.

[0027] The beneficial effects of the present invention are:

[0028] The present invention realizes the cutting function of the ceramic tool and the real-time measurement of the cutting temperature during the cutting process by selecting temperature-sensitive materials and designing the tool structure. The tool is both a sensor and a cutting tool, and is easy to install, has no effect on the machine tool, and can be used without changing the existing machine tool structure and system.

[0029] The ceramic tool obtained by the present invention has a Vickers hardness of 20 to 22 GPa, a bending strength of 800 to 1000 MPa, and a fracture toughness of 8 to 10 MPa·m 1 / 2 , fully meeting the requirements for tool performance in industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0031] Figure 1 This is a schematic diagram of the cutting temperature measurement and tool status monitoring of a ceramic knife with integrated temperature measurement and cutting functions of a thermistor in an embodiment of the present invention;

[0032] Figure 2 It is a structural schematic diagram of a ceramic tool with integrated temperature measurement and cutting functions of a thermistor according to Example 1 of the present invention;

[0033] Figure 3 A schematic diagram of the structure of a ceramic tool with integrated temperature measurement and cutting functions of a thermistor according to Embodiment 2 of the present invention;

[0034] Figure 4 A schematic diagram of the structure of a ceramic tool with integrated temperature measurement and cutting functions of a thermistor according to Embodiment 3 of the present invention;

[0035] Figure 5 A schematic diagram of the structure of a ceramic tool with integrated temperature measurement and cutting functions of a thermistor according to a fourth embodiment of the present invention;

[0036] Figure 6 A schematic diagram of the structure of a ceramic tool with integrated temperature measurement and cutting functions of a thermistor in accordance with Embodiment 5 of the present invention;

[0037] Figure 7 This is a schematic diagram of the structure of a ceramic tool with integrated thermistor temperature measurement and cutting functions according to Example 6 of the present invention. DETAILED DESCRIPTION

[0038] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] As introduced in the background technology, the existing conventional methods for detecting cutting temperature have the problems of difficulty in temperature measurement and inaccurate measurement. In order to solve the above technical problems, the present invention provides a thermistor temperature measurement and cutting function integrated ceramic tool and preparation method and application. The present invention not only improves the mechanical properties of the ceramic tool through the selection of materials and the design of the structure, but also gives the ceramic tool thermal sensitivity, thereby realizing the integration of temperature sensing and cutting function.

[0041] The present invention provides a thermistor temperature measurement and cutting function integrated ceramic tool, which is composed of at least a thermistor layer and a ceramic matrix layer. The thermistor layer is formed by sintering a temperature measurement material and an additive; the ceramic matrix layer is formed by sintering a matrix material, a binder and a reinforcement phase.

[0042] The temperature measuring materials are 8YSZ, 3Y-TZP, LaMnO 3 One or more of;

[0043] Additives are ZnO, MgO, SiC, Al 2 O 3 One or more of;

[0044] The matrix material is Al 2 O 3 、Si 3 N 4 , one or more of CBN;

[0045] The binder is one or more of Mo, Ni and Co;

[0046] The reinforcement phase is TiC, WC, SiCCr 2 O 3 、TiO 2 One or more of .

[0047] In some examples of this implementation manner, the mass percentage of the temperature measuring material in the thermosensitive layer is 60-85%, and the mass percentage of the additive is 15-40%.

[0048] In some examples of this embodiment, in the ceramic matrix layer, the mass percentage of the matrix material is 50-70%, the mass percentage of the binder is 0-5%, and the mass percentage of the reinforcement phase is 30-45%.

[0049] In some preferred embodiments of this embodiment, the mass percentage of 8YSZ in the thermosensitive layer is 40%-80%, the mass percentage of 3Y-TZP is 0%-50%, and the mass percentage of LaMnO 3 The mass percentage of Al is 0%-50%, 2 O 3 The mass percentage is 5%-30%, the mass percentages of ZnO, MgO and SiC are 0%-15% respectively; the Al in the ceramic matrix layer 2 O 3 The mass percentage is 50%-70%, Si 3 N 4 The mass percentages of CBN are 0%-20% respectively; the mass percentages of Mo, Ni, and Co are 0%-5% respectively; the mass percentage of TiC is 5%-40%; the mass percentages of WC, SiCCr 2 O 3 、TiO 2 The mass percentages are 0%-20% respectively.

[0050] In some embodiments of this implementation, the ceramic tool integrating thermistor temperature measurement and cutting functions is composed of at least M thermistor layers and N ceramic base layers, where M and N are both positive integers, and the ceramic base layers and the thermistor layers are stacked alternately.

[0051] In some examples of this implementation manner, a thermosensitive layer can be subdivided into multiple sub-thermosensitive layers according to different temperature measuring materials used, and conversely, multiple sub-thermosensitive layers stacked together can form a thermosensitive layer.

[0052] In some embodiments of this implementation, a mixed layer is provided between the ceramic substrate layer and the thermal sensitive layer, and the raw material in the mixed layer is Al 2 O 3 、Si 3 N 4 One or more of CBN, Ni, Co, and MgO can increase the bonding performance between the ceramic base layer and the thermal sensitive layer.

[0053] In one or more embodiments, when there is no mixed layer, the thickness of the ceramic matrix layer is 50-70% of the total thickness of the ceramic tool. When there is a mixed layer, the total thickness of the ceramic matrix layer and the mixed layer is 50-70% of the total thickness of the ceramic tool. The mechanical properties of the ceramic tool can be guaranteed, while the temperature sensing performance of the ceramic tool can be guaranteed.

[0054] In one or more embodiments, the total thickness of the mixed layer is 5-15% of the total thickness of the ceramic tool.

[0055] In one or more embodiments, the thickness of the heat-sensitive layer is 30-50% of the total thickness of the ceramic tool.

[0056] In some examples of this embodiment, the ceramic cutter is square.

[0057] Specifically, the thermistor temperature measurement and cutting function integrated ceramic tool is a double-layer structure consisting of a ceramic base layer and a thermal layer. The total thickness of the thermal layer accounts for 30-50% of the total tool thickness. This layer has a thermal effect and can convert the cutting temperature signal into a resistance conversion signal. The thickness of the ceramic base layer accounts for 50-70% of the total tool thickness. This layer has high hardness, high wear resistance, high bending strength and high fracture toughness, and plays the function of cutting metal.

[0058] Specifically, the ceramic tool with integrated thermistor temperature measurement and cutting function consists of a three-layer structure consisting of a ceramic base layer and two thermosensitive layers. The total thickness of the two thermosensitive layers accounts for 30-50% of the total tool thickness. This layer has a thermosensitive effect and can convert the cutting temperature signal into a resistance conversion signal. The thickness of the ceramic base layer accounts for 50-70% of the total tool thickness. This layer has high hardness, high wear resistance, high bending strength and high fracture toughness, and plays the role of cutting metal.

[0059] Specifically, the ceramic tool with integrated thermistor temperature measurement and cutting function is a five-layer structure consisting of three ceramic matrix layers and two thermal layers. The three ceramic matrix layers and the two thermal layers are stacked in layers, that is, the two thermal layers are sandwiched between the three ceramic matrix layers. The total thickness of the two thermal layers accounts for 30-50% of the total tool thickness. This layer has a thermal effect and can convert the cutting temperature signal into a resistance conversion signal. The thickness of the ceramic matrix layer accounts for 50-70% of the total tool thickness. This layer has high hardness, high wear resistance, high bending strength and high fracture toughness, and plays the function of cutting metal.

[0060] Specifically, the ceramic tool integrating thermistor temperature measurement and cutting function has a five-layer structure, including a ceramic base layer and two thermal layers, wherein the two thermal layers are respectively composed of two sub-thermal layers. With the ceramic base layer as the center, there are two sub-thermal layers on each side, wherein the constituent materials of the two adjacent sub-thermal layers are different, respectively referred to as the first sub-thermal layer and the second sub-thermal layer, and the first sub-thermal layer and the second sub-thermal layer are symmetrically stacked with the ceramic base layer as the center. The total thickness of the ceramic base layer accounts for 50% to 70% of the total thickness of the tool, and has high hardness, high wear resistance, high bending strength and high fracture toughness, and plays the function of cutting part material. The total thickness of the four sub-thermal layers accounts for 30% to 60% of the total tool thickness. This layer has a thermal effect and can convert the cutting temperature signal into a thermal potential signal.

[0061] Specifically, the ceramic tool integrating thermistor temperature measurement and cutting function has a five-layer structure, which includes not only a ceramic matrix layer and two thermosensitive layers, but also a mixed layer is arranged between the ceramic matrix layer and the thermosensitive layer. At this time, the total thickness of the two thermosensitive layers accounts for 25-45% of the total tool thickness. This layer has a thermosensitive effect and can convert the cutting temperature signal into a resistance signal. The thickness of the ceramic matrix layer accounts for 50-70% of the total tool thickness. This layer has high hardness, high wear resistance, high bending strength and high fracture toughness, and plays the role of cutting metal. The total thickness of the two mixed layers accounts for 5-15% of the total tool thickness, and this layer plays the role of bonding the ceramic matrix layer and the thermosensitive layer.

[0062] Specifically, the ceramic tool with integrated thermistor temperature measurement and cutting function has a seven-layer structure, which includes not only a ceramic matrix layer and four sub-thermal layers, but also two mixed layers. With the ceramic matrix layer as the center, there are two sub-thermal layers on each side, where the composition materials of the two adjacent sub-thermal layers are different, respectively called the first sub-thermal layer and the second sub-thermal layer, the first sub-thermal layer and the second sub-thermal layer are symmetrically stacked with the ceramic matrix layer as the center, and the two mixed layers are respectively located between the ceramic matrix layer and the sub-thermal layer. The total thickness of the two mixed layers and the ceramic matrix layer accounts for 50% to 70% of the total thickness of the tool, with high hardness, high wear resistance, high bending strength and high fracture toughness, and plays the function of cutting part materials. The total thickness of the four sub-thermal layers accounts for 30% to 50% of the total tool thickness. This layer has a thermosensitive effect and can convert the cutting temperature signal into a resistance conversion signal. The total thickness of the two mixed layers accounts for 2% to 10% of the total tool thickness, and this layer plays the role of bonding the ceramic matrix layer and the thermal layer.

[0063] Another embodiment of the present invention provides a method for preparing the above-mentioned thermistor temperature measurement and cutting function integrated ceramic tool, wherein each layer of material is made into powder, each layer of material powder is filled and compacted layer by layer in sequence, and finally spark plasma sintering (SPS) is performed to obtain the obtained product.

[0064] The present invention firstly makes the material into powder, which is conducive to the mixing of the components in the material, increases the synergy between the components, and improves the mechanical properties of the ceramic tool. Through spark plasma sintering (SPS), it can not only ensure that the sintered material is more dense, further improve the mechanical properties of the ceramic tool, but also avoid Y 3+ The diffusion of ions increases the temperature sensing performance of ceramic tools.

[0065] In some examples of this implementation mode, the process of preparing the powder is ball milling and drying.

[0066] In some examples of this embodiment, the pressure (stress) used for compaction is 4-6 MPa.

[0067] In some examples of this embodiment, in spark plasma sintering (SPS), the sintering temperature is 1400-1600° C., the sintering time is 20-30 min, and the sintering pressure (pressure) is 30-35 MPa.

[0068] The experimental methods in the following examples without specifying specific conditions are usually carried out under conventional conditions or conditions recommended by the manufacturers.

[0069] In the following embodiments, the powders of each layer of materials are mixed and ball-milled with anhydrous ethanol as the medium. After vacuum drying and sieving, the powders are spread layer by layer and compacted. After compaction, spark plasma sintering (SPS) is performed to produce a ceramic tool material with integrated thermistor temperature measurement and cutting functions. The ceramic tool material with integrated thermistor temperature measurement and cutting functions is cut and polished to produce a ceramic tool with integrated thermistor temperature measurement and cutting functions. The principle of cutting temperature measurement and tool status monitoring, such as Figure 1 As shown. The thermistor temperature measurement and cutting function integrated ceramic tool 1 is fixed on the tool handle 3 by the set screw 2. When the thermistor temperature measurement and cutting function integrated ceramic tool 1 cuts the part material, the cutting temperature of the cutting point 4 will cause the resistance change in the thermistor layer of the ceramic tool with integrated cutting function. The wire is fixed on the upper and lower sides of each thermistor layer through conductive glue, and connected to the temperature measuring instrument 6 through the compensation wire 5 to realize the real-time measurement of the cutting temperature of a single point or multiple points in the cutting area.

[0070] Example 1

[0071] Thermistor temperature measurement and cutting function integrated ceramic tool structure Figure 2 As shown, it has a double-layer structure. The first layer is a heat-sensitive layer, which uses temperature measuring materials such as 8YSZ, and its thickness is 40% of the total thickness of the tool; the second layer is a ceramic matrix layer, which uses Al 2 O 3 or Si 3 N 4The base material accounts for 60% of the total thickness of the tool.

[0072] In this embodiment, the powder materials required for preparing the thermistor temperature measurement and cutting function integrated ceramic tool are shown in Table 1, which gives the mass percentage (wt.%) of the powder components of the thermistor layer A1 (first layer) and the ceramic substrate A2 (second layer).

[0073] Table 1 Powder component mass percentage (wt.%)

[0074]

[0075] Each powder material was placed in a ball mill. 2 O 3 Ceramic balls are used as grinding balls and anhydrous ethanol is used as the medium. The ball milling time is 48 hours. The suspension after ball milling is dried in a vacuum drying oven, sieved through a 160-mesh sieve after drying, and sealed for later use. Subsequently, the corresponding powder materials are evenly mixed according to the requirements of each layer of the ceramic tool material, and the mixed powder materials are loaded into the mold layer by layer in the order of A1 / A2 by controlling the thickness of each layer. Each layer of powder material needs to be flattened and compacted until the powder is filled. The powder is pre-compacted at 5MPa and then placed in a spark plasma sintering (SPS) furnace for hot pressing sintering. The sintering temperature is 1450℃, the sintering time is 26min, and the sintering pressure is 30MPa. After sintering, a high-density ceramic blank is obtained. After cutting and polishing, a three-layer structure of thermistor temperature measurement and cutting function integrated ceramic tool is made. The tool and the temperature measuring instrument are installed on the handle to achieve real-time measurement of the cutting temperature.

[0076] Example 2

[0077] Thermistor temperature measurement and cutting function integrated ceramic tool structure Figure 3 As shown, it has a three-layer structure. The first and third layers are heat-sensitive layers, using heat-sensitive materials such as 8YSZ and 3Y-TZP, and their thickness is 40% of the total thickness of the tool; the second layer is a ceramic matrix layer, using Al 2 O 3 or Si 3 N 4 The base material accounts for 60% of the total thickness of the tool.

[0078] In this embodiment, the powder materials required for preparing the thermistor temperature measurement and cutting function integrated ceramic tool are shown in Table 2, which gives the mass percentage (wt.%) of the powder components of the thermistor layer B1 (first layer, third layer) and the ceramic substrate B2 (second layer).

[0079] Table 2 Powder component mass percentage (wt.%)

[0080]

[0081] Each powder material was placed in a ball mill. 2 O 3 Ceramic balls are used as grinding balls and anhydrous ethanol is used as the medium. The ball milling time is 48 hours. The suspension after ball milling is dried in a vacuum drying oven, sieved through a 160-mesh sieve after drying, and sealed for later use. Subsequently, the powder materials are evenly mixed according to the requirements of each layer of the ceramic tool material, and the mixed powder materials are loaded into the mold layer by layer in the order of B1 / B2 / B1 by controlling the thickness of each layer. Each layer of powder needs to be flattened and compacted until the powder is filled. The powder is pre-compacted at 5MPa and then placed in a spark plasma sintering (SPS) furnace for hot pressing sintering. The sintering temperature is 1450℃, the sintering time is 26min, and the sintering pressure is 30MPa. After sintering, a high-density ceramic blank is obtained. After cutting and polishing, a ceramic tool with a three-layer structure, a thermistor temperature measurement and cutting function integrated is made. The tool and the temperature measuring instrument are installed on the tool handle to achieve real-time measurement of the cutting temperature.

[0082] Example 3

[0083] Thermistor temperature measurement and cutting function integrated ceramic tool structure Figure 4 As shown, it has a five-layer structure, wherein the second and fourth layers are heat-sensitive layers F1, using heat-sensitive materials such as 8YSZ and 3Y-TZP, and their thickness is 50% of the total thickness of the tool; the first, third and fifth layers are ceramic matrix layers F2, using Al 2 O 3 or Si 3 N 4 The base material accounts for 50% of the total thickness of the tool.

[0084] In this embodiment, the powder materials required for preparing the thermistor temperature measurement and cutting function integrated ceramic cutting tool are shown in Table 3, which gives the mass percentage (wt.%) of the powder components of the thermistor layer F1 (second layer, fourth layer) and the ceramic substrate F2 (first layer, third layer, fifth layer).

[0085] Table 3 Powder component mass percentage (wt.%)

[0086]

[0087] Each powder material was placed in a ball mill. 2 O 3Ceramic balls are used as grinding balls and anhydrous ethanol is used as the medium. The ball milling time is 48 hours. The suspension after ball milling is dried in a vacuum drying oven, sieved through a 160-mesh sieve after drying, and sealed for later use. Subsequently, the powder materials are evenly mixed according to the requirements of each layer of the ceramic tool material, and the mixed powder materials are loaded into the mold layer by layer in the order of F2 / F1 / F2 / F1 / F2 by controlling the thickness of each layer. Each layer of powder needs to be flattened and compacted until the powder is filled. The powder is pre-compacted at 5MPa and then placed in a spark plasma sintering (SPS) furnace for hot pressing sintering. The sintering temperature is 1450℃, the sintering time is 26min, and the sintering pressure is 30MPa. After sintering, a high-density ceramic blank is obtained. After cutting and polishing, a three-layer structure of thermistor temperature measurement and cutting function integrated ceramic tools are made. The tool and the temperature measuring instrument are installed on the tool handle to achieve real-time measurement of the cutting temperature.

[0088] Example 4

[0089] Thermistor temperature measurement and cutting function integrated ceramic tool structure Figure 5 As shown in the figure, the first and fifth layers of the five-layer gradient ceramic tool with thermal sensitive effect are the first sub-thermal sensitive layer, which uses thermal sensitive materials such as 8YSZ3 and Y-TZP, and its thickness is 20% of the total thickness of the tool. The second and fourth layers are the second sub-thermal sensitive layer, which uses 8YSZ and LaMnO 3 The thickness of the thermosensitive material is 20% of the total thickness of the tool. The temperature measuring materials used in the first thermosensitive layer and the second thermosensitive layer are different. The third layer is a ceramic matrix layer, using Al 2 O 3 or Si 3 N 4 The base material accounts for 60% of the total thickness of the tool.

[0090] In this embodiment, the powder materials required for preparing thermistor temperature measurement and cutting function integrated ceramic cutting tools are shown in Table 4, which gives the mass percentage (wt.%) of the powder components of the first sub-thermistor D1 (first layer and fifth layer), the second sub-thermistor D2 (second layer and fourth layer), and the ceramic base layer D3 (third layer).

[0091] Table 4 Powder component mass percentage (wt.%)

[0092]

[0093] The powder materials were loaded into the ball mill respectively, with carbide balls as grinding balls and anhydrous ethanol as the medium. The ball milling time was 48 hours. The suspension after ball milling was dried in a vacuum drying oven, and after drying, it was sieved through a 100-mesh sieve and sealed for later use. Then, the powders were evenly mixed according to the material requirements of each layer of the ceramic tool, and the powder materials were loaded into the mold layer by layer in the order of D1 / D2 / D3 / D2 / D1 by controlling the thickness of each layer. Each layer of powder needed to be flattened and compacted until the powder was filled. The powder was pre-compacted at 5MPa, and then placed in a spark plasma sintering (SPS) furnace for hot pressing sintering. The sintering temperature was 1450℃, the sintering time was 26min, and the sintering pressure was 30MPa. After sintering, a high-density ceramic blank was obtained. After cutting and polishing, a ceramic tool with a five-layer structure, integrated thermistor temperature measurement and cutting function was made. The tool and the temperature measuring instrument were installed on the tool handle to achieve real-time measurement of the cutting temperature.

[0094] Example 5

[0095] Thermistor temperature measurement and cutting function integrated ceramic tool structure Figure 6 As shown in the figure, there are five layers in the structure. The first and fifth layers are heat-sensitive layers, which use heat-sensitive materials such as 8YSZ and 3Y-TZP. Their thickness is 30% of the total thickness of the tool. The third layer is a ceramic matrix layer, which uses Al 2 O 3 or Si 3 N 4 The base ceramic material accounts for 50% of the total thickness of the tool; the second and fourth layers are mixed layers, using Al 2 O 3 、Si 3 N 4 , CBN, Ni, Co, MgO and other materials, its thickness is 20% of the total thickness of the tool.

[0096] In this embodiment, the powder materials required for preparing the thermistor temperature measurement and cutting function integrated ceramic cutting tool are shown in Table 5, which gives the mass percentage (wt.%) of the powder components of the thermistor layer C1 (first layer, fifth layer), the mixed layer C2 (second layer and fourth layer) and the ceramic matrix layer C3 (third layer).

[0097] Table 3 Powder component mass percentage (wt.%)

[0098]

[0099] The powder materials were placed in the ball mill jars. 2 O 3Ceramic balls are used as grinding balls and anhydrous ethanol is used as the medium. The ball milling time is 48 hours. After the ball milling is completed, the suspension is dried in a vacuum drying oven, and after drying, it is sieved through a 160-mesh sieve and sealed for later use. Subsequently, the powder is evenly mixed according to the material requirements of each layer of the ceramic tool, and by controlling the thickness of each layer, the powder material is loaded into the mold layer by layer in the order of C1 / C2 / C3 / C2 / C1. Each layer of powder needs to be flattened and compacted until the powder is filled. The powder is pre-compacted at 5MPa and then placed in a spark plasma sintering (SPS) furnace for hot pressing sintering. The sintering temperature is 1450℃, the sintering time is 26min, and the sintering pressure is 30MPa. After sintering, a high-density ceramic blank is obtained. After cutting and polishing, a ceramic tool with a five-layer structure and integrated thermistor temperature measurement and cutting function is made. The tool and the temperature measuring instrument are installed on the tool handle to achieve real-time measurement of the cutting temperature.

[0100] Example 6

[0101] Thermistor temperature measurement and cutting function integrated ceramic tool structure Figure 7 As shown in the figure, the first and seventh layers of the seven-layer gradient ceramic tool with thermal sensitive effect are the first thermal sensitive layer, using thermal sensitive materials such as 8YSZ and 3Y-TZP, and their thickness is 17% of the total thickness of the tool. The second and sixth layers are the second thermal sensitive layer, using 8YSZ, 3Y-TZP and LaMnO 3 The thickness of the thermosensitive material is 17% of the total thickness of the tool. The temperature measuring materials used in the first thermosensitive layer and the second thermosensitive layer are different. The fourth layer is a ceramic matrix layer, using Al 2 O 3 or Si 3 N 4 The base material accounts for 50% of the total thickness of the tool; the third and fifth layers are mixed layers, using Al 2 O 3 、Si 3 N 4 , CBN, Ni, Co, MgO and other materials, whose thickness accounts for 16% of the total thickness of the tool.

[0102] In this embodiment, the powder materials required for preparing the thermistor temperature measurement and cutting function integrated ceramic cutting tools are shown in Table 6, which gives the mass percentage (wt.%) of the powder components of the first sub-thermal layer E1 (first layer and seventh layer), the second sub-thermal layer E2 (second layer and sixth layer), the ceramic matrix layer E3 (fourth layer), and the mixed layer E4 (third layer and fifth layer).

[0103] Table 5 Powder component mass percentage (wt.%)

[0104]

[0105] The powder materials were loaded into the ball mill respectively, with carbide balls as grinding balls and anhydrous ethanol as the medium. The ball milling time was 48 hours. The suspension after ball milling was dried in a vacuum drying oven, and after drying, it was sieved through a 160-mesh sieve and sealed for later use. Then, the powders were evenly mixed according to the material requirements of each layer of the ceramic tool, and the powder materials were loaded into the mold layer by layer in the order of E1 / E2 / E3 / E4 / E3 / E2 / E1 by controlling the thickness of each layer. Each layer of powder needed to be flattened and compacted until the powder was filled. The powder was pre-compacted at 5MPa, and then placed in a spark plasma sintering (SPS) furnace for hot pressing sintering. The sintering temperature was 1450℃, the sintering time was 26min, and the sintering pressure was 30MPa. After sintering, a high-density ceramic blank was obtained. After cutting and polishing, a ceramic tool with a seven-layer structure and integrated thermistor temperature measurement and cutting function was made. The tool and the temperature measuring instrument were installed on the tool handle to achieve real-time measurement of the cutting temperature.

[0106] The present invention also provides an application of the above-mentioned thermistor temperature measurement and cutting function integrated ceramic tool in cutting processing / or milling processing. Specifically, a cutting machine tool is provided, including a machine base, a cutting tool and a temperature measuring instrument are installed on the machine base, the cutting tool is the above-mentioned thermistor temperature measurement and cutting function integrated ceramic tool, and the temperature measuring instrument is connected to the thermistor layer in the ceramic tool through a wire.

[0107] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An integrated ceramic tool with thermistor temperature measurement and cutting functions, characterized in that, it includes a thermosensitive layer and a ceramic matrix layer; the thermosensitive layer is formed by sintering a temperature measurement material and an additive; the ceramic matrix layer is formed by sintering a matrix material, a binder, and a reinforcing phase; The temperature-measuring material is one or more of 8YSZ, 3Y-TZP, LaMnO 3 ; The additive is one or more of ZnO, MgO, SiC, and Al 2 O 3 ; The substrate material is Al 2 O 3 , Si 3 N 4 , one or more of CBN; the binder is one or more of Mo, Ni, and Co; The reinforcing phase is one or more of TiC, WC, SiC, Cr 2 O 3 , TiO 2 ; wherein, the mass percentage of the temperature measurement material in the thermosensitive layer is 50% - 100%, and the mass percentage of the additive is 0 - 5%; the mass percentage of the binder in the ceramic matrix layer is 0 - 5%, the mass percentage of the reinforcing phase is 30 - 45%, and the mass percentage of the matrix material is 50% - 70%; the total thickness of the thermosensitive layer accounts for 30 - 50% of the total thickness of the tool, and the total thickness of the ceramic matrix layer accounts for 50 - 70% of the total thickness of the tool; the thermosensitive layer and the ceramic matrix layer form the ceramic tool in a laminated manner; The Vickers hardness of the ceramic tool is 20 - 22 GPa, the flexural strength is 800 - 1000 MPa, and the fracture toughness is 8 - 10 MPa·m 1 / 2 .

2. The integrated ceramic tool with thermistor temperature measurement and cutting functions according to claim 1, characterized in that, it is composed of at least M thermosensitive layers and N ceramic matrix layers, both M and N are positive integers, and the ceramic matrix layers and the thermosensitive layers are stacked alternately.

3. The integrated ceramic tool with thermistor temperature measurement and cutting functions according to claim 1, characterized in that, one thermosensitive layer is divided into multiple sub-thermosensitive layers, and the sub-thermosensitive layers are distinguished according to the different temperature measurement materials they are composed of.

4. The integrated ceramic tool with thermistor temperature measurement and cutting functions according to claim 1, characterized in that, A mixed layer is provided between the ceramic matrix layer and the thermosensitive layer, and the raw materials in the mixed layer are one or more of Al 2 O 3 、Si 3 N 4 、CBN, Ni, Co, MgO; after adding a mixed layer, the total thickness of the mixed layer is 5 - 15% of the total thickness of the ceramic tool, the total thickness of the thermosensitive layer accounts for 25 - 45% of the total thickness of the tool, and the thickness of the ceramic matrix layer accounts for 50 - 70% of the total thickness of the tool.

5. The integrated ceramic tool with thermistor temperature measurement and cutting functions according to claim 1, characterized in that, the ceramic tool is square.

6. The integrated ceramic tool with thermistor temperature measurement and cutting functions according to claim 1, characterized in that, The mass percentage of 8YSZ in the thermal-sensitive layer is 40%-80%, the mass percentage of 3Y-TZP is 0%-50%, and the mass percentage of LaMnO 3 is 0%-50%, and the mass percentage of Al 2 O 3 is 5%-30%. The mass percentages of ZnO, MgO, and SiC are 0%-15% respectively; in the ceramic matrix layer, the mass percentage of Al 2 O 3 is 50%-70%, and the mass percentages of Si 3 N 4 and CBN are 0%-20% respectively; the mass percentages of Mo, Ni, and Co are 0%-5% respectively, and the mass percentage of TiC is 5%-40%; the mass percentages of WC, SiCCr 2 O 3 and TiO 2 are 0%-20% respectively.

7. A preparation method for the integrated ceramic tool with thermistor temperature measurement and cutting functions according to any one of claims 1 - 6, characterized in that, each layer of material is made into powder, and the powder of each layer of material is filled and compacted layer by layer in sequence, and finally spark plasma sintering is carried out.

8. The preparation method for the integrated ceramic tool with thermistor temperature measurement and cutting functions according to claim 7, characterized in that, the specific process of making each layer of material into powder, filling and compacting the powder of each layer of material layer by layer in sequence, and finally carrying out spark plasma sintering (SPS) is as follows: Put each powdery material into a ball milling jar respectively, using Al 2 O 3 ceramic balls as grinding balls and absolute ethanol as the medium, ball milling for 48 h, drying the ball milled suspension in a vacuum drying oven, screening through a 160-mesh sieve after drying and storing for future use; Subsequently, the corresponding powder materials are uniformly mixed according to the requirements of each layer of the ceramic tool, and the mixed powder materials are filled into the mold layer by layer in a predetermined order and thickness. Each layer of powder material needs to be leveled and compacted until the powder filling is completed; the pressure used for compaction is 4 - 6 MPa; Subsequently, the mold is placed in a spark plasma sintering (SPS) furnace for hot-pressing sintering. The sintering temperature is 1400 - 1600 °C, the sintering time is 220 - 30 min, and the sintering pressure is 30 - 35 MPa; a ceramic blank with high density is obtained after sintering; The ceramic blank is made into a tool after cutting and polishing.

9. Application of the integrated ceramic cutting tool with thermistor temperature measurement and cutting function according to any one of claims 1 to 6 in cutting and / or milling processes, Characterized in that, the integrated ceramic cutting tool with thermistor temperature measurement and cutting function is installed on a machine tool.

10. A cutting machine tool, comprising a machine base, Characterized in that, the machine base is installed with a cutting tool and a temperature measuring instrument, the cutting tool is the integrated ceramic cutting tool with thermistor temperature measurement and cutting function according to any one of claims 1 to 6, and the temperature measuring instrument is connected to the thermistor layer in the ceramic tool through a wire.

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