Three-dimensional weavable high-performance reinforcement and preparation method therefor

Abstract

A three-dimensional weavable high-performance reinforcement, comprising reinforcing particles with through holes in three directions on the surface, the through holes in the three directions being perpendicular to one another, and the ends of the through holes being polygonal; and further comprising cylindrical connectors for connecting the reinforcing particles. The holes on the surface of the reinforcing particles are uniform in shape and do not easily deform. The reinforcing particles used are relatively regular and can be threaded and fixed by metal wires or high-temperature ceramic fiber strands so as to obtain reinforcements of different shapes. Due to the use of reinforcing particles, the porosity of the reinforcement is increased. In addition, by means of threading and fixing, reinforcements of different shapes with three-dimensional structures can be weaved, which facilitates the adjustment of the particle size of the reinforcement and the ratio of the reinforcement to a metal. By means of the present invention, it is easy for manufacturers to design according to requirements and reinforcements can be provided on demand, which can improve the preparation efficiency of three-dimensional weavable high-performance reinforcements.

Description

Three-dimensional programmable high-performance reinforcement and preparation method TECHNICAL FIELD

[0001] The present application belongs to the technical field of wear-resistant equipment, and particularly relates to a three-dimensional programmable high-performance reinforcement and a preparation method. BACKGROUND

[0002] A large amount of wear-resistant materials are needed in mine machinery, coal mills of power plants, and equipment of cement plants. Wear-resistant parts such as grinding rollers usually work in relatively harsh environments, and mainly crush materials through extrusion and grinding. In the process of work, the wear-resistant parts are subjected to extrusion force, impact force and shear force, and at the same time of crushing hard materials, the surface of the wear-resistant parts is also damaged.

[0003] Ceramic-metal wear-resistant composite materials have the characteristics of high specific strength, high wear resistance, high thermal stability of ceramics and good impact resistance and plastic toughness of metals. The service life of the grinding roller and the wear-resistant part of the grinding disc prepared by the ceramic-metal wear-resistant composite material can reach 2.5-3 times of that of the traditional high-chromium cast iron wear-resistant part, which not only saves the cost, but also greatly improves the production efficiency. However, the wettability between ceramic and metal is poor, and there are great difficulties in preparing wear-resistant ceramic-metal composite materials by infiltration method. Although domestic researchers have done a lot of research work in this field, the results are not very ideal. At present, domestic large composite grinding rollers, hammer heads and other wear-resistant composite material parts mainly rely on foreign imports.

[0004] The imported materials from abroad all adopt ceramic or high-performance alloy particles, which are bonded by an adhesive to form a pre-polymer, and then the strength is improved by sintering in an oxidizing atmosphere or vacuum sintering to prevent the pre-polymer from collapsing during the pouring process of the metal matrix. However, the precision of this preparation process is complicated. Not only does it need to be sintered during the preparation of the pre-polymer, but also it needs to be sintered in an oxidizing atmosphere after the pre-polymer is prepared, which is high in cost. SUMMARY

[0005] The purpose of the present application is to overcome the shortcomings in the prior art and provide a three-dimensional programmable high-performance reinforcement and a preparation method.

[0006] The three-dimensional programmable high-performance reinforcement comprises: reinforcing particles, the reinforcing particles are provided with through holes in three directions on the surface, the through holes in the three directions are perpendicular to each other, and the end part of the through hole is polygonal; and a cylindrical connecting piece for connecting the reinforcing particles; the hole shape on the surface of the reinforcing particle is consistent and is not easy to deform;

[0007] The three-dimensional programmable high-performance reinforcement further comprises a metal wire or a high-temperature ceramic fiber rope; the metal wire or the high-temperature ceramic fiber rope passes through the through hole on the reinforcing particle, a fixed number of reinforcing particles or ceramic particles are connected and fixed by the metal wire or the high-temperature ceramic fiber rope, and the cylindrical connecting piece and the metal wire or the high-temperature ceramic fiber rope together form a reinforcing body with a three-dimensional structure;

[0008] The reinforcing particles are ceramic, alloy, intermetallic, diamond metal composite particles or cermet particles.

[0009] As a preferred embodiment, when the reinforcing particles are ceramic, the ceramic used includes alumina ceramic, zirconia ceramic, zirconia toughened alumina ceramic (ZTA), silicon carbide, silicon nitride, tungsten carbide, titanium carbide, boron nitride and boron carbide.

[0010] As a preferred embodiment, when the reinforcing particles are alloy, the alloy used includes cobalt alloy, titanium alloy and chromium alloy.

[0011] As a preferred embodiment, when the reinforcing particles are fixed by metal wires, carbon fibers or high-temperature ceramic fiber ropes, the three-dimensional structure of the reinforcing body formed by the reinforcing particles includes cone, sphere, cube, cylinder, flat plate, arc plate and special-shaped plate.

[0012] As a preferred embodiment, the reinforcing particles are cubes; the cubes are provided with through holes for fixing; cylindrical connectors are inserted between the cubes as spacers, and the adjacent cubes are connected by the cylindrical connectors, which are provided with through holes for fixing; the reinforcing particles, the cube reinforcing particles fixed by the metal wires or the ceramic particles, and the cylindrical connectors form a reinforcing body with two-dimensional or three-dimensional structure.

[0013] As a preferred embodiment, as shown in FIG. 5, the reinforcing particles are cubes; the cubes are provided with grooves, and each groove is provided with a through hole for fixing; the cubes are connected by cylindrical connectors, which are provided with through holes for fixing; the two ends of each cylindrical connector are inserted into the adjacent two reinforcing particles; the reinforcing particles, the cube reinforcing particles fixed by the metal wires or the ceramic particles, and the cylindrical connectors form a reinforcing body with two-dimensional or three-dimensional structure.

[0014] As a preferred embodiment, as shown in FIG. 1, the reinforcing particles are three-dimensional directionally expandable modules composed of four cubes; the cubes are provided with through holes for connecting the cubes; the surface of each cube is provided with a groove or a protrusion matching in shape for fixing the cubes, thereby forming a reinforcing body with three-dimensional structure.

[0015] As preferred, as shown in Fig. 7, the reinforcing particle is a convex cube as a whole; a groove is arranged in the middle of the bottom surface of the convex cube, and a through hole for knot fixing is arranged on one side of the bottom surface of the convex cube; a through hole for knot fixing is arranged on one side of the top surface of the bottom entity of the convex cube; a convex block is arranged on one side of the top entity of the convex cube, and a groove is arranged on the other side of the top entity of the convex cube; a convex block is arranged on the top of the convex cube, and a through hole for knot fixing is arranged on one side of the top entity of the convex cube; the convex block and the groove are matched in shape and are in contact with each other when the knot is fixed, so as to form a reinforcing body with a three-dimensional structure.

[0016] As preferred, as shown in Fig. 8, the reinforcing particle is an expandable module composed of three cubes as a whole; a groove or a convex block is arranged on the surface of the cube for connecting the particles, and a through hole is arranged on the cube; the convex block and the groove are matched in shape and are in contact with each other when the knot is fixed, so as to form a reinforcing body with a three-dimensional structure.

[0017] As preferred, a nickel layer, a titanium layer, a cobalt layer, a copper layer or a chromium layer is coated on the surface of the reinforcing body, and the thickness of the coating layer on the surface of the reinforcing body is 5-50 um.

[0018] The preparation method of the three-dimensional programmable high-performance reinforcing body includes the following steps:

[0019] Step 1: The raw material powder is weighed according to the percentage of each component in the three-dimensional programmable high-performance reinforcing body to be prepared; the raw material powder is ball milled to D50 of 0.5-1.2 um (median particle size), mixed uniformly, and then dried and poured out as raw material for standby;

[0020] Step 2: Paraffin and oleic acid are added to a heating pot, and the paraffin and oleic acid are melted at high temperature; the raw material is slowly added to the heating pot, and stirred quickly until the powdered raw material is uniformly dispersed in the paraffin and oleic acid mixture; the paraffin and oleic acid mixture with the dispersed raw material is poured into a material tray and cooled to obtain a wax cake;

[0021] Step 3: The wax cake is added to a die casting machine and heated and melted, and then vacuumized to discharge air; a mold is placed on the die casting machine, and the slurry is sent into the mold by air pressure, and then demolded after cooling to obtain a three-dimensional programmable high-performance reinforcing body blank product;

[0022] Step 4: The three-dimensional programmable high-performance reinforcing body blank product is first de-waxed, and then sent to a sintering equipment for sintering, and cooled to obtain a reinforcing particle of the three-dimensional programmable high-performance reinforcing body;

[0023] Step 5: Based on the shape of the cast steel product and the required shape of the reinforcement part, pass the metal wire or high-temperature ceramic fiber rope through the through holes on the reinforcement particles of the three-dimensional weavable high-performance reinforcement. The reinforcement particles are fixed by the metal wire or high-temperature ceramic fiber rope to obtain the reinforcement with the required shape and three-dimensional structure.

[0024] Preferably, step 6 follows step 5: coating the surface of the reinforcement obtained in step 5 with nickel, titanium or chromium to obtain a nickel layer, titanium layer or chromium layer, which helps to improve the wettability of the reinforcement with molten steel, making it easier to cast and improving the bonding strength.

[0025] Preferably, the sintering equipment in step 4 is a microwave sintering furnace, a tunnel kiln, a vacuum furnace, or an atmosphere-protected furnace.

[0026] The beneficial effects of this invention are:

[0027] The reinforcing particles used in this invention are relatively regular and can be fixed by threading metal wires or high-temperature ceramic fiber ropes to obtain reinforcements of different shapes. Due to the use of reinforcing particles, the porosity of the reinforcement is increased. In addition, the threading and fixing method can be used to weave reinforcements of different shapes with three-dimensional structures, which makes it easy to adjust the particle size of the reinforcement and the ratio of reinforcement to metal. It is easy for manufacturers to design according to their needs and can provide reinforcements on demand, thereby improving the preparation efficiency of three-dimensional weavable high-performance reinforcements.

[0028] The through-hole ends of the reinforcing particles are polygonal, which serves to fix them in place and prevent deformation due to rotation. The connectors used to connect the reinforcing particles can be cylindrical or other shapes, optimized according to actual needs; this invention can connect the reinforcing particles according to shape requirements, and the length of the reinforcing particles determines the porosity of the reinforcing material. Attached Figure Description

[0029] Figure 1 is a schematic diagram of a three-dimensional oriented scalable modular reinforcing particle composed of four cubes;

[0030] Figure 2 shows the reinforcement of the cone-shaped three-dimensional structure;

[0031] In Figure 3, the left side shows reinforcing particles with three through holes on the surface, and the right side shows a cylindrical connector;

[0032] Figure 4 shows the reinforcement of the spherical three-dimensional structure;

[0033] Figure 5 shows the reinforcement of a cubic three-dimensional structure;

[0034] Figure 6 shows the reinforcement of a cylindrical three-dimensional structure;

[0035] Figure 7 is a schematic diagram of the convex cubic reinforcing particles;

[0036] Fig. 8 is the split body of Fig. 7 on both left and right sides;

[0037] Fig. 9 is a reinforcing body with a flat plate-shaped three-dimensional structure;

[0038] Fig. 10 is a reinforcing body with an arc plate-shaped three-dimensional structure;

[0039] Fig. 11 is a reinforcing body with a circular truncated cone-shaped three-dimensional structure.

[0040] Fig. 12 is a reinforcing particle with three-directional through holes on the surface on the left side and a cylindrical connecting piece on the right side;

[0041] Fig. 13 is a reinforcing particle with a cubic shape from top left to bottom right, including a bottom view, a perspective view, a left side view and a front view;

[0042] Fig. 14 is a cylindrical connecting piece from top left to bottom right, including a top view, a perspective view, a left side view and a front view;

[0043] Fig. 15 is a reinforcing body with a spherical three-dimensional structure composed of the cubic reinforcing particle in Fig. 13 and the cylindrical connecting piece in Fig. 14;

[0044] Fig. 16 is a reinforcing body with a cubic three-dimensional structure composed of the cubic reinforcing particle in Fig. 13 and the cylindrical connecting piece in Fig. 14;

[0045] Fig. 17 is a reinforcing body with a conical three-dimensional structure composed of the cubic reinforcing particle in Fig. 13 and the cylindrical connecting piece in Fig. 14. DETAILED DESCRIPTION

[0046] The present application will be further described below in conjunction with examples. The following examples are only used to help understand the present application. It should be noted that for those skilled in the art, without departing from the principles of the present application, a number of modifications can be made to the present application, and these modifications and improvements also fall within the scope of protection of the claims of the present application. Example 1

[0047] As shown in Fig. 1, a three-dimensional programmable high-performance reinforcement body comprises: reinforcing particles, the reinforcing particles are provided with three-directional through holes on the surface, the three-directional through holes are perpendicular to each other, and the end of the through hole is polygonal; further comprising a cylindrical connector for connecting the reinforcing particles; the hole shape of the surface of the reinforcing particle is consistent and is not easy to deform; further comprising a metal wire or a high-temperature ceramic fiber rope; the metal wire or the high-temperature ceramic fiber rope passes through the through hole on the reinforcing particle, a fixed number of reinforcing particles or ceramic particles are connected and fixed by the metal wire or the high-temperature ceramic fiber rope, and the two ends of each cylindrical connector are respectively inserted into the inside of two adjacent reinforcing particles; together with the cylindrical connector, a conical, spherical, cubic, cylindrical, flat plate-shaped, arc plate-shaped or circular table-shaped reinforcing body with a three-dimensional structure is formed (as shown in Figs. 2-6 and 9-11); the reinforcing particles are ceramic, alloy, intermetallic compound, diamond metal composite particles or cermet particles;

[0048] The ceramic reinforcing particles include the following materials: alumina ceramic, zirconia ceramic, zirconia toughened alumina ceramic (ZTA), silicon carbide, silicon nitride, tungsten carbide, titanium carbide, boron nitride and boron carbide.

[0049] When the reinforcing particles are alloy, the alloy reinforcing particles include the following materials: cobalt alloy, titanium alloy and chromium alloy. Embodiment 2

[0050] On the basis of embodiment 1, the reinforcing particles of the three-dimensional programmable high-performance reinforcement body are convex cubic in whole; each face of the convex cubic is provided with a groove, and each groove is provided with a through hole for threading and fixing; the convex cubics are connected by the cylindrical connectors, and the cylindrical connectors are provided with through holes for threading and fixing; the two ends of each cylindrical connector are respectively inserted into the inside of two adjacent reinforcing particles; the reinforcing particles, the convex cubic reinforcing particles or ceramic particles threaded by the metal wire, and the cylindrical connectors form a reinforcing body with a two-dimensional or three-dimensional structure. Embodiment 3

[0051] On the basis of embodiment 1, as shown in Fig. 6, the reinforcing particles are convex cubic in whole; the convex cubic is provided with a groove in the middle of the bottom surface, and is provided with a through hole for threading and fixing on one side of the bottom surface of the convex cubic; the convex cubic is provided with a through hole for threading and fixing on one side of the front surface of the bottom entity of the convex cubic; one side of the top entity of the convex cubic is provided with a protrusion, and the other side is provided with a groove; the top of the convex cubic is provided with a protrusion, and one side of the top entity of the convex cubic is provided with a through hole for threading and fixing; the shapes of the protrusion and the groove are matched, and are used for contacting each other when threading and fixing, so as to form a reinforcing body with a three-dimensional structure. Embodiment 4

[0052] On the basis of embodiment 1, as shown in Figures 7 and 8, the reinforcing particles of the three-dimensional programmable high-performance reinforcing body are three-dimensional directionally expandable modules composed of four cubes, and the cubes are provided with through holes for connection between the cubes; each cube surface is provided with a matching groove or protrusion for mutual engagement when fixed by threading, forming a reinforcing body with a three-dimensional structure. Embodiment 5

[0053] As shown in Figures 12 to 17, a three-dimensional programmable high-performance reinforcing body comprises: reinforcing particles, the surface of the reinforcing particles is provided with three-directional through holes, the three-directional through holes are perpendicular to each other, and the end of the through hole is polygonal; and further comprising a cylindrical connecting piece for connecting the reinforcing particles;

[0054] Further comprising a metal wire or high-temperature ceramic fiber rope; the metal wire or high-temperature ceramic fiber rope passes through the through holes on the reinforcing particles, and a certain number of reinforcing particles or ceramic particles are fixed by the metal wire or high-temperature ceramic fiber rope,

[0055] The reinforcing particles are cubes as a whole; each face of the cube is provided with a through hole for threading fixation; a cylindrical connecting piece is inserted between the cubes as a spacer, and the adjacent cubes are connected through the cylindrical connecting piece, and the cylindrical connecting piece is provided with a through hole for threading fixation; the reinforcing particles, the cube reinforcing particles or ceramic particles threaded by the metal wire, and the cylindrical connecting piece together form a reinforcing body with a spherical, cubic or conical three-dimensional structure;

[0056] The reinforcing particles are ceramic, alloy, intermetallic compound, diamond metal composite particles or cermet particles. Embodiment 6

[0057] A preparation method of a three-dimensional programmable high-performance zirconia toughened alumina ceramic (ZTA) reinforcing body, comprising the following steps:

[0058] Step 1: As shown in Table 1, according to the percentage of alumina, zirconia and sintering aid in the zirconia toughened alumina ceramic (ZTA) reinforcing body to be prepared, the set weight of alumina powder, zirconia powder and sintering aid is weighed; the alumina powder, zirconia powder and sintering aid are ball milled to D50 (alumina powder, zirconia powder and sintering aid are ball milled to 1.2um, 1um and 1um respectively), mixed uniformly, dried for 8 hours and then poured out as raw material for standby;

[0059] Step 2: Add paraffin and oleic acid to the heating pot, and when the paraffin and oleic acid are melted at high temperature, slowly add the raw material to the heating pot, and quickly stir for 1 hour until the powdered raw material is evenly dispersed in the paraffin and oleic acid mixture. Pour the paraffin and oleic acid mixture containing the dispersed raw material into a container, cool to obtain a wax cake;

[0060] Step 3, the wax cake is added into the die casting machine to be heated and melted, then vacuumized for 10 minutes to discharge air; the mold is placed on the die casting machine, and the slurry is sent into the mold by air pressure, and the zirconia toughened alumina ceramic blank product is obtained after cooling and demolding;

[0061] Step 4, the zirconia toughened alumina ceramic blank product is first de-waxed, then sent into the tunnel kiln to be sintered at 1500-1550 degrees, and the zirconia toughened alumina ceramic (ZTA) reinforcing particle is obtained after cooling;

[0062] Step 5, according to the shape of the cast steel product and the shape required by the reinforcing part, the metal wire or high-temperature ceramic fiber rope is passed through the through hole on the zirconia toughened alumina ceramic (ZTA) reinforcing particle, and the zirconia toughened alumina ceramic (ZTA) reinforcing particle is fixed by the metal wire or high-temperature ceramic fiber rope, so that the reinforcing body with the required shape and three-dimensional structure is obtained;

[0063] Step 6: the surface of the reinforcing body obtained in step 5 is coated with nickel, titanium or chromium to obtain a nickel layer, a titanium layer or a chromium layer, which helps to improve the wettability of the reinforcing body and molten steel, making it easier to pour and improve the bonding force.

[0064] The zirconia toughened alumina ceramic reinforcing body with a nickel layer, a titanium layer or a chromium layer on the surface is placed in a pouring mold during use, positioned, preheated, and then poured into molten steel, cooled, demolded, and a high-performance wear-resistant product is obtained, and the wear resistance of the product is greatly improved.

[0065] The three-dimensional programmable high-performance reinforcing body that can be sintered in an oxidizing atmosphere can be prepared by the method of steps 1 to 6 in the embodiment; the composition and performance parameters of the zirconia toughened alumina ceramic (ZTA) reinforcing body obtained in the four examples are shown in Table 1.

[0066] Table 1 Formulation and performance parameters of zirconia toughened alumina ceramic (ZTA) reinforcing body

[0067] Composition and physical properties Median particle size Example 1 (mass fraction) Example 2 (mass fraction) Example 3 (mass fraction) Example 4 (mass fraction) Alumina powder 0.8um 62 parts 57 parts 52 parts 46 parts Zirconia powder 1um 35 parts 40 parts 45 parts 50 parts Titanium dioxide 1um 0.35 parts 0.3 parts 0.25 parts 0.25 parts Dolomite 1um 4.2 parts 4.1 parts 4 parts 3.8 parts Paraffin wax 12.8 parts 13.2 parts 13.6 parts 14 parts Oleic acid 0.38 parts 0.41 parts 0.4 parts 0.46 parts Density: g / cm 3 4.38 g / cm 3 4.49 g / cm 3 4.58 g / cm 3 4.66 g / cm 3Flexural strength: MPa 360 MPa 367 MPa 380 MPa 402 MPa Porosity: % 0.62% 0.55% 0.52% 0.67% Thermal shock resistance (900 air cooling): times More than 15 times More than 15 times More than 15 times More than 5 times Thermal conductivity: W / m.K 5.97 W / m.K 5.75 W / m.K 5.63 W / m.K 5.36 W / m.K Firing temperature: ℃ 1500℃ 1480℃ 1470℃ 1450℃ Example 7

[0068] Since tungsten carbide (WC) is easy to oxidize, it cannot be sintered in air and needs to be sintered in vacuum or in atmosphere protection; therefore, the present example improves a preparation method of a three-dimensional programmable high-performance tungsten carbide reinforcing body, comprising the following steps:

[0069] Step 1, as shown in Table 2, according to the percentage of tungsten carbide and sintering aid in the tungsten carbide reinforcing body to be prepared, the set weight of tungsten carbide powder and sintering aid is weighed; the tungsten carbide powder and sintering aid are ball milled to D50 (tungsten carbide powder and sintering aid are respectively ball milled to 1.2um and 1um), mixed uniformly, dried for 8 hours and then poured out as raw material for standby;

[0070] Step 2, add paraffin and oleic acid to the heating pot, and slowly add the raw material to the heating pot after the paraffin and oleic acid are melted at high temperature. Stir quickly for 1 hour until the powdered raw material is uniformly dispersed in the paraffin and oleic acid mixture. Pour the paraffin and oleic acid mixture containing the dispersed raw material into a container and cool to obtain a wax cake;

[0071] Step 3, melt the wax cake in the die casting machine, then vacuum for 10 minutes to exhaust air. Put the mold on the die casting machine and send the slurry into the mold by air pressure. After cooling, demold to obtain a tungsten carbide blank product;

[0072] Step 4, first remove the wax from the tungsten carbide blank product, then send it into a vacuum furnace or an atmosphere protection furnace to sinter at 1650-1750 degrees, and cool to obtain a tungsten carbide reinforcing particle;

[0073] Step 5, according to the shape of the cast steel product and the shape required by the reinforcing part, pass the metal wire or high-temperature ceramic fiber rope through the through hole on the tungsten carbide reinforcing particle. The tungsten carbide reinforcing particle is fixed by the metal wire or high-temperature ceramic fiber rope, and a three-dimensional structure reinforcing body with the required shape is obtained;

[0074] Step 6: coat the surface of the reinforcing body obtained in step 5 with nickel, titanium or chromium to obtain a nickel layer, a titanium layer or a chromium layer, which helps to improve the wettability of the reinforcing body and molten steel, making it easier to pour and improve the bonding force. The composition and performance parameters of the three-dimensional programmable high-performance tungsten carbide reinforcing body in the four prepared examples are shown in Table 2.

[0075] The surface of the tungsten carbide reinforcement has a nickel layer, a titanium layer or a chromium layer. In use, the tungsten carbide reinforcement is placed in a casting mold, positioned, preheated, and then poured into molten steel, cooled, demolded, and a high-performance wear-resistant product is obtained. The wear resistance of the product is greatly improved.

[0076] Table 2 Tungsten carbide (WC) reinforcement formulation and performance parameter table

[0077] Component and physical property Median particle size Example 1 (mass fraction) Example 2 (mass fraction) Example 3 (mass fraction) Example 4 (mass fraction) Tungsten carbide 0.6 um 99.4 parts 95.9 parts 95 parts 90 parts Zirconia powder 0.5 um 3.2 parts Nickel metal powder 1 um 0.6 parts 0.9 parts Cobalt metal powder 1 um 5 parts 10 parts Paraffin 5.5 parts 5.7 parts 5.7 parts 6 parts Oleic acid 0.15 parts 0.17 parts 0.17 parts 0.19 parts Flexural strength: MPa 630 MPa 530 MPa 780 MPa 820 MPa Porosity: % 0.62% 4.96% 1.21% 0.85% Thermal shock resistance (900 air cooling): times Greater than 15 times Greater than 15 times Greater than 15 times Hardness: GPa 23.2 GPa 22.5 GPa 21.6 GPa 20.7 GPa Fracture toughness: MPa·m 1 / 2 11.2 MPa·m 1 / 2 12.1 MPa·m 1 / 2 13.5 MPa·m 1 / 2 14.6 MPa·m 1 / 2 Firing temperature ℃ 1700 ℃ 1700 ℃ 1750 ℃ 1750 ℃.

Claims

1. A three-dimensional programmable high performance reinforcement, characterized in that, The application relates to a reinforced particle, a cylindrical connecting piece for connecting the reinforced particles, a metal wire or a high-temperature ceramic fiber rope, and a reinforced body with a three-dimensional structure. The reinforced particle is a ceramic, an alloy, an intermetallic compound, a diamond metal composite particle or a cermet particle. The ceramic is selected from alumina ceramic, zirconia ceramic, zirconia toughened alumina ceramic, silicon carbide, silicon nitride, tungsten carbide, titanium carbide, boron nitride and boron carbide. The alloy is selected from cobalt alloy, titanium alloy and chromium alloy.

2. The three-dimensional programmable high performance reinforcement of claim 1, wherein: The three-dimensional structure of the reinforced body formed by the reinforced particles fixed by the metal wire, the carbon fiber or the high-temperature ceramic fiber rope includes a conical shape, a spherical shape, a cubic shape, a cylindrical shape, a flat plate shape, an arc plate shape and a special-shaped plate shape.

3. The three-dimensional programmable high performance reinforcement of claim 1, wherein: The reinforced particle is a cubic body, and the cubic body is provided with through holes for being fixed by the metal wire.

4. The three-dimensional programmable high performance reinforcement of claim 1, wherein: The reinforced particle is a cubic body, and the cubic body is provided with grooves, and each groove is provided with a through hole for being fixed by the metal wire.

5. The three-dimensional programmable high performance reinforcement of any of claims 2 to 4, wherein: The reinforced particle is a three-dimensional direction extensible module composed of four cubic bodies, and the cubic body is provided with a through hole for being connected with adjacent cubic bodies.

6. The three-dimensional programmable high performance reinforcement of any of claims 2 to 4, wherein: The reinforced particle is a convex cubic body, and the convex cubic body is provided with a through hole for being fixed by the metal wire.

7. The three-dimensional programmable high performance reinforcement of any of claims 2 to 4, wherein: The convex cubic body is provided with a convex block on one side of a top part of the convex cubic body, and the other side of the top part of the convex cubic body is provided with a groove.

8. The three-dimensional programmable high performance reinforcement of any of claims 2 to 4, wherein: The convex block and the groove are matched in shape and are used for being fixed by the metal wire.

9. The three-dimensional programmable high performance reinforcement of any of claims 2 to 4, wherein: The reinforcing particle is an expandable module composed of three cubes; the surface of the cubes is provided with grooves or protrusions for connecting between the particles, and through holes are provided on the cubes; the protrusions and the grooves are matched in shape and are used for mutual cooperation when fixed by threading to form a reinforcing body with a three-dimensional structure.

10. The three-dimensional programmable high performance reinforcement of claim 1, wherein: The surface of the reinforcing body is coated with a nickel layer, a titanium layer, a cobalt layer, a copper layer or a chromium layer, and the thickness of the coating layer on the surface of the reinforcing body is 5-50 um.

11. A method of making the three-dimensional programmable high performance reinforcement of claim 2, wherein, The method comprises the following steps: Step 1: according to the percentage of each component in the three-dimensional programmable high-performance reinforcing body to be prepared, a set weight of raw material powder is weighed; the raw material powder is ball milled to D50 of 0.5-1.2 um, uniformly mixed, dried and then poured out as a raw material for standby; Step 2: add paraffin and oleic acid to a heating pot, and when the paraffin and oleic acid are melted at high temperature, slowly add the raw material to the heating pot, and quickly stir until the powdered raw material is uniformly dispersed in the paraffin and oleic acid mixture; pour the paraffin and oleic acid mixture containing the dispersed raw material into a material tray and cool to obtain a wax cake; Step 3: add the wax cake to a die casting machine and heat to melt, then vacuumize and discharge air; place a mold on the die casting machine, send the slurry into the mold by air pressure, and after cooling, demold to obtain a three-dimensional programmable high-performance reinforcing body blank product; Step 4: the three-dimensional programmable high-performance reinforcing body blank product is first de-waxed, and then sent to a sintering equipment for sintering, and cooled to obtain a reinforcing particle of a three-dimensional programmable high-performance reinforcing body; Step 5: according to the shape of the cast steel product and the shape required by the reinforcing part, pass a metal wire or a high-temperature ceramic fiber rope through the through hole on the reinforcing particle of the three-dimensional programmable high-performance reinforcing body, and fix the reinforcing particles by the metal wire or the high-temperature ceramic fiber rope to obtain a reinforcing body with a three-dimensional structure in the required shape.

12. The method of claim 11, wherein the three-dimensional programmable high performance reinforcement is prepared by, Step 5 is followed by Step 6: coating the surface of the reinforcing body obtained in Step 5 with nickel, titanium or chromium to obtain a nickel layer, a titanium layer or a chromium layer.

13. The method of claim 11, wherein the three-dimensional programmable high performance reinforcement is prepared by the steps of: The sintering equipment in Step 4 is a microwave sintering furnace, a tunnel kiln, a vacuum furnace or an atmosphere protection furnace. ​

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