A porous metal composite and a method of making the same

Abstract

The application discloses a kind of porous metal composite material and preparation method thereof include composite material metal block, the composite material metal block includes multiple holes, and multiple holes are through in composite material metal block, and have regularity arrangement in composite material metal block, multiple the hole is distributed with same specification, multiple the hole position is provided with steel plating layer, and the surface of steel plating layer is provided with fibrous groove, and the inner wall of steel plating layer is covered with anticorrosive paint simultaneously, multiple the hole is shaped using tungsten rod mould, and is in the surface adhesion carbon fiber of tungsten rod mould, and steel is plated on the surface of carbon fiber to form steel plating layer and fibrous groove, the porous metal composite material and preparation method thereof disclosed in the application have the advantage of forming the same specification and uniform distribution of multiple holes in composite material, adapt to mass production, effectively improve the compression resistance, shock absorption and sound absorption performance of porous metal, with good popularization effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of porous metal composite material, and particularly relates to a porous metal composite material and a preparation method thereof. BACKGROUND

[0002] Porous metal has the advantages of high temperature resistance, high strength, good electric and thermal conductivity, weldability and easy processing. The excellent performance of porous metal material has attracted widespread attention, enabling its rapid development and important application in the fields of energy conservation and environmental protection, petroleum and chemical industry, etc., and can solve the problems of recovery of liquid and gas raw materials and valuable resources, purification of products, etc.

[0003] If the porous metal material is to form a uniform specification and orderly arranged porous form, it can only be realized by the method of additive manufacturing, which has certain limitations for mass production and cost expenditure of the porous metal material. Therefore, the key problem of the current research on porous metal material is to develop a preparation method with controllable internal pore structure, good repeatability and low cost. SUMMARY

[0004] The present application discloses a porous metal composite material and a preparation method thereof, and aims to solve the technical problem of how to realize a preparation method with controllable internal pore structure, good repeatability and low cost of the porous metal composite material.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0006] A porous metal composite material comprises a composite metal block, the composite metal block comprises a plurality of holes, the plurality of holes penetrate through the composite metal block and are regularly arranged in the composite metal block, the plurality of holes are distributed in the same specification, a steel plating layer is arranged at the positions of the plurality of holes, the surface of the steel plating layer is provided with a fibrous groove, and the inner wall of the steel plating layer is simultaneously covered with anticorrosive paint, the plurality of holes are shaped by using a tungsten rod mold, carbon fibers are adhered to the surface of the tungsten rod mold, and the steel plating layer and the fibrous groove are formed by plating steel on the surface of the carbon fibers, and the remaining composite material is in the form of molten pouring and covers the plurality of tungsten rod molds to form the porous metal composite material.

[0007] By using a tungsten rod mold for molding, it is beneficial to form the same specification and uniform distribution of the porous composite material, compared with the porous metal composite material formed by additive manufacturing, the operation is more simple and efficient, and it is convenient for mass production, and can also save cost, and by adhering carbon fibers to the surface of the tungsten rod mold and plating steel on the surface of the carbon fibers to form a steel plating layer and a fibrous groove, the remaining composite material is in the form of molten pouring to form a porous metal composite material outside the plurality of tungsten rod molds, so that the formed porous surface is more corrosion-resistant and high-hardness steel, thereby effectively avoiding the deformation of the pores during use of the porous metal, and ensuring the service life, and the carbon fibers after burning form fibrous grooves on the surface of the steel plating layer, thereby increasing the contact area of the surface, thereby effectively improving the shock absorption and sound absorption performance of the porous metal, and has good popularization.

[0008] A preparation method of a porous metal composite material, comprising the following specific steps:

[0009] S1: raw material preparation: preparing raw materials needed for the porous metal, and treating the raw materials to make them suitable for subsequent production and use;

[0010] S2: porous molding: using the prepared raw materials to perform overall and porous shaping;

[0011] S3: coating penetration treatment: liquid coating is penetrated into the pores of the metal to cover the porous surface with a thin coating for corrosion protection;

[0012] S4: post-processing: liquid coating recovery treatment after coating penetration;

[0013] The S1, raw material preparation includes the following specific steps:

[0014] S11: raw material mixing: mixing the composite materials needed for the metal;

[0015] S12: raw material melting: heating to the melting point of the composite material in the furnace and melting it in the furnace;

[0016] S13: constant temperature preservation: constant temperature preservation in liquid state in the furnace;

[0017] The S2, porous molding includes the following specific steps;

[0018] S21: tungsten rod mold preparation: preparing a tungsten rod mold for porous molding;

[0019] S22: fiber adhesion: adhering carbon fibers to the tungsten rod mold by glue, and the carbon fibers surround the tungsten rod mold once;

[0020] S23: Steel plating layer: Powder steel is sprayed on the surface of the carbon fiber, which is wrapped around the outer periphery of the carbon fiber, and a steel plating layer is formed on the outer periphery of the carbon fiber;

[0021] S24: Pouring: Prepare a mold for making metal, and place the tungsten rod mold in it, then pour the molten raw material into the mold;

[0022] S25: Cooling and molding: The raw material gradually cools and molds in the mold;

[0023] S26: Tungsten rod burning and disassembly: Heat the tungsten rod to directly burn the carbon fiber, and after the carbon fiber is decomposed, the tungsten rod is removed, forming a porous structure with fiber-shaped grooves on the steel plating layer in the pores;

[0024] In the S21, the tungsten rod mold in the tungsten rod mold preparation is a plurality of tungsten rods of the same specification arranged in order, and uniform gaps are left between each tungsten rod. Each tungsten rod can be heated to a temperature of 800-1000°C.

[0025] By adhering the carbon fiber to the tungsten rod mold, the friction of the surface of the tungsten rod mold is enhanced, facilitating subsequent steel plating treatment. By directly burning the carbon fiber with the tungsten rod, the carbon fiber is decomposed. Since the melting point of carbon fiber is higher than that of the raw material and lower than that of steel, the external composite material is prevented from decomposing under the isolation of steel when the carbon fiber is burned, and the tungsten rod is quickly separated.

[0026] In a preferred embodiment, the S3, the coating penetration treatment includes the following specific steps:

[0027] S31: Liquid coating preparation: Prepare liquid anticorrosive coating in a container for standby;

[0028] S32: Ultrasonic vibration penetration: An ultrasonic vibration probe is arranged in the container, and the shaped metal block is placed in the container. The liquid coating is penetrated into the pores of the metal by ultrasonic vibration;

[0029] S33: Secondary penetration treatment: After the first penetration, the metal block is taken out and subjected to secondary penetration treatment in the same way;

[0030] S34: Penetration flushing: Add water to the container with ultrasonic vibration, and quickly place the metal block after secondary penetration in the container, and also use ultrasonic waves to flush the pores with water;

[0031] In the S31, the liquid coating in the liquid coating preparation is a hydrophobic liquid coating;

[0032] The S4, the post-treatment includes the following specific steps:

[0033] S41: air-drying: after the flushing, the metal block is lifted and air-dried under natural wind until there is no excess water on the surface thereof;

[0034] S42: layered filtration: the water used for flushing is left to stand, and under the action of the hydrophobic liquid coating, it gradually forms an obvious layer with the water;

[0035] S43: liquid coating adsorption recovery: the hydrophobic liquid coating separated from the water is recovered by using a suction device.

[0036] By coating and flushing in the form of ultrasonic vibration, the flowability of the liquid can be effectively improved under the action of ultrasonic vibration, so that it can quickly penetrate into the pores, improve the coating and flushing efficiency, and at the same time improve the uniform coverage of the coating. In addition, the excess liquid coating can be removed during the flushing process by water flushing. The liquid coating is a hydrophobic liquid coating, and the liquid after water flushing is recovered. By standing and layering and suction device, the liquid coating can be recovered, forming secondary utilization, and reducing the cost.

[0037] As can be seen from the above, a porous metal composite material includes a composite metal block, the composite metal block includes a plurality of holes, the plurality of holes penetrate through the composite metal block and are regularly arranged in the composite metal block, the plurality of holes are distributed in the same specification, a steel plating layer is arranged at the positions of the plurality of holes, the surface of the steel plating layer is provided with a fibrous groove, and the inner wall of the steel plating layer is simultaneously covered with anticorrosive paint. The plurality of holes are molded by using a tungsten rod mold, the surface of the tungsten rod mold is adhered with carbon fibers, and the surface of the carbon fibers is plated with steel to form the steel plating layer and the fibrous groove. The remaining composite material is in the form of molten pouring and covers the plurality of tungsten rod molds outside to form the porous metal composite material. The porous metal composite material and the preparation method thereof have the technical effects of facilitating the formation of the same specification and uniform distribution of the pores in the composite material, adapting to mass production, effectively improving the compression resistance, shock absorption, sound absorption and other properties of the porous metal, and having good popularization. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 The figure is a schematic diagram of the overall process of the preparation method of the porous metal composite material.

[0039] Figure 2 The figure is a schematic diagram of the raw material preparation process of the preparation method of the porous metal composite material.

[0040] Figure 3 The figure is a schematic diagram of the porous molding process of the preparation method of the porous metal composite material.

[0041] Figure 4A coating permeation treatment flowchart of a porous metal composite material preparation method proposed in the present application.

[0042] Figure 5 A post-treatment flowchart of a porous metal composite material preparation method proposed in the present application. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0044] The porous metal composite material and the preparation method thereof disclosed in the present application are mainly applied to the scene of porous metal composite material preparation.

[0045] Referring to Figures 1-5 A porous metal composite material includes a composite metal block, a plurality of holes are included in the composite metal block, the plurality of holes pass through the composite metal block, and the plurality of holes are regularly arranged in the composite metal block, the plurality of holes are distributed in the same specification, a steel plating layer is arranged at positions of the plurality of holes, a fibrous groove is arranged on a surface of the steel plating layer, and an anticorrosive coating covers inner walls of the steel plating layer, the plurality of holes are formed by using a tungsten rod mold, carbon fibers are adhered to a surface of the tungsten rod mold, and the steel plating layer and the fibrous groove are formed by plating steel on the carbon fibers, and the remaining composite material is formed into the porous metal composite material by being covered outside the plurality of tungsten rod molds in a molten pouring form, the plurality of holes in the same specification and uniformly distributed in the composite material are formed by using the tungsten rod mold, compared with a porous metal composite material formed by additive manufacturing, the operation is more convenient, the work efficiency is higher, mass production is facilitated, the cost is saved, the formed porous surface is steel material that is more corrosion-resistant and has high hardness, deformation of the holes in the porous metal during use is effectively avoided, and the service life is ensured, the fibrous groove on the surface of the steel plating layer is formed by the carbon fibers adhered to the surface of the tungsten rod mold and the steel plated on the carbon fibers, the contact area of the surface is increased, and the shock absorption and sound absorption performance of the porous metal are effectively improved, and the porous metal has good popularization.

[0046] Referring to Figure 1 A porous metal composite material preparation method includes the following specific steps.

[0047] S1: raw material preparation: preparing raw materials required for the porous metal for standby use, and treating the raw materials to make them suitable for subsequent production and use;

[0048] S2: Porous molding: using the prepared raw material to make the whole and porous molding;

[0049] S3: Coating penetration treatment: liquid coating penetration in the pores of the metal, covering the porous surface with a thin coating for corrosion protection;

[0050] S4: Post-processing: after coating penetration, liquid coating recovery treatment.

[0051] Referring to Figure 2 In a preferred embodiment, S1, raw material preparation includes the following specific steps:

[0052] S11: Raw material mixing: mixing the required composite materials for the metal;

[0053] S12: Raw material melting: heating to the melting point of the composite material in the furnace and melting it in the furnace;

[0054] S13: Constant temperature preservation: constant temperature preservation in liquid state in the furnace.

[0055] Referring to Figure 3 In a preferred embodiment, S2, porous molding includes the following specific steps;

[0056] S21: Tungsten rod mold preparation: preparing a tungsten rod mold for porous molding;

[0057] S22: Fiber adhesion: adhering carbon fibers to the tungsten rod mold by glue, with the carbon fibers surrounding the tungsten rod mold once;

[0058] S23: Steel plating: spraying powdered steel on the surface of the carbon fibers, making it surround the outer periphery of the carbon fibers and forming a steel plating layer on the outer periphery of the carbon fibers;

[0059] S24: Pouring: preparing a mold for making the metal, placing the tungsten rod mold in it, and pouring the molten raw material into the mold;

[0060] S25: Cooling molding: the raw material gradually cools and molds in the mold;

[0061] S26: Tungsten rod burning disassembly: heating the tungsten rod to directly burn the carbon fibers, after the carbon fibers decompose, the tungsten rod is removed, forming a porous structure, and the fiber-shaped grooves formed during the adhesion of the carbon fibers on the steel plating layer in the pores are retained.

[0062] Referring to Figure 3In a preferred embodiment, S21, the tungsten rod mold in the tungsten rod mold preparation is arranged in multiple tungsten rods of the same specification, and uniform gaps are left between each tungsten rod. Each tungsten rod can be heated to a temperature of 800-1000°C. By adhering the carbon fiber to the tungsten rod mold, the friction of the surface of the tungsten rod mold is enhanced, facilitating subsequent steel plating processing. By directly burning the carbon fiber with the tungsten rod, the carbon fiber is decomposed. Since the melting point of the carbon fiber is higher than that of the raw material and lower than that of the steel, the external composite material is prevented from decomposing under the isolation of the steel when the carbon fiber is burned, and the tungsten rod is quickly separated.

[0063] Referring to Figure 4 In a preferred embodiment, S3, the coating penetration treatment includes the following specific steps:

[0064] S31: Liquid coating preparation: Prepare the liquid anticorrosive coating in a container for standby;

[0065] S32: Ultrasonic vibration penetration: An ultrasonic vibration probe is arranged in the container, and the shaped metal block is placed in the container. The liquid coating is penetrated into the pores of the metal by ultrasonic vibration;

[0066] S33: Secondary penetration treatment: After the first penetration, the metal block is taken out and subjected to secondary penetration treatment in the same way;

[0067] S34: Penetration flushing: Add water to the container with ultrasonic vibration, and quickly place the metal block after secondary penetration in the container, and use ultrasonic waves to flush the pores with water.

[0068] Referring to Figure 4 In a preferred embodiment, S31, the liquid coating in the liquid coating preparation is a hydrophobic liquid coating.

[0069] Referring to Figure 5 In a preferred embodiment, S4, the post-treatment includes the following specific steps:

[0070] S41: Air drying: The metal block after flushing is lifted and air dried under natural wind until there is no excess water on the surface;

[0071] S42: Layered filtration: The water used for flushing is left to stand, and under the action of the hydrophobic liquid coating, it gradually forms a clear layer with the water;

[0072] S43: liquid coating adsorption recovery: the hydrophobic liquid coating is recovered by using a suction device to suck the water layer, and the coating and flushing are performed in the form of ultrasonic vibration. Under the action of ultrasonic vibration, the fluidity of the liquid can be effectively improved, so that it can quickly penetrate into the pores, improve the coating and flushing efficiency, and at the same time improve the uniformity of the coating. In addition, the water flushing can take away the excess liquid coating during the flushing process. The liquid coating is hydrophobic, and the liquid after flushing is recovered. Through static stratification and suction device, the liquid coating can be recovered, forming secondary utilization, and reducing the cost of the action.

[0073] Working principle: the tungsten rod mold is used for plastic forming, which is beneficial to form the same specification and uniform distribution of the porous composite material. Compared with the porous metal composite material formed by additive manufacturing, the operation is more simple and efficient, and is convenient for mass production, and can also save costs. At the same time, the carbon fiber is adhered to the surface of the tungsten rod mold, and the steel is plated on the surface of the carbon fiber to form a plated steel layer and a fibrous groove. The remaining composite material is in the form of molten pouring to form a porous metal composite material outside the tungsten rod mold, so that the formed porous surface is more corrosion-resistant and high-hardness steel, which can effectively avoid the deformation of the pores during the use of the porous metal, and protect the service life. The carbon fiber after burning will form a fibrous groove on the surface of the plated steel layer, which can increase the contact area of the surface, thereby effectively improving the shock absorption and sound absorption performance of the porous metal, and has good popularization. In the process of preparing the porous metal, the carbon fiber is adhered to the tungsten rod mold to strengthen the friction of the surface of the tungsten rod mold, which is convenient for subsequent steel plating treatment. At the same time, the carbon fiber is directly burned by the tungsten rod to decompose the carbon fiber. Since the melting point of the carbon fiber is higher than that of the raw material and lower than that of the steel, the external composite material is prevented from decomposing under the isolation of the steel during the burning of the carbon fiber. It also has the effect of making the tungsten rod quickly separate. In addition, the coating and flushing are performed in the form of ultrasonic vibration. Under the action of ultrasonic vibration, the fluidity of the liquid can be effectively improved, so that it can quickly penetrate into the pores, improve the coating and flushing efficiency, and at the same time improve the uniformity of the coating. In addition, the water flushing can take away the excess liquid coating during the flushing process. The liquid coating is hydrophobic, and the liquid after flushing is recovered. Through static stratification and suction device, the liquid coating can be recovered, forming secondary utilization, and reducing the cost of the action.

[0074] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacement or change according to the technical solution and inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A porous metal composite comprising a composite metal block, characterized in that, The composite metal block includes a plurality of holes, and the plurality of holes are arranged regularly in the composite metal block and pass through the composite metal block, the plurality of holes are distributed in the same specification, the plurality of holes are provided with a steel plating layer, the surface of the steel plating layer is provided with a fibrous groove, and the inner wall of the steel plating layer is simultaneously covered with anticorrosive paint, the plurality of holes are molded by using a tungsten rod mold, the surface of the tungsten rod mold is adhered with carbon fibers, and the steel plating layer and the fibrous groove are formed by plating steel on the surface of the carbon fibers, and the remaining composite material is in the form of molten pouring and covers the plurality of tungsten rod molds to form a porous metal composite material.

2. A method for preparing a porous metal composite material, applied to the porous metal composite material of claim 1, characterized in that, The method comprises the following specific steps: S1: raw material preparation: preparing raw materials required for the composite metal block and treating the raw materials to make them suitable for subsequent production; S2: porous molding: using the prepared raw materials to mold the whole and the pores; S3: coating penetration treatment: liquid coating is penetrated into the pores of the metal to cover the coating for corrosion prevention on the surface of the pores; S4: post-treatment: liquid coating recovery treatment is performed after the coating penetration; The S1, raw material preparation comprises the following specific steps: S11: raw material mixing: mixing the composite materials required for the composite metal block; S12: raw material melting: heating to the melting point of the composite material in a furnace and melting it in the furnace; S13: constant temperature preservation: constant temperature preservation in a liquid state in the furnace; The S2, porous molding comprises the following specific steps: S21: tungsten rod mold preparation: preparing a tungsten rod mold for porous molding, the tungsten rod mold is a plurality of tungsten rods of the same specification arranged in order, and uniform gaps are left between each tungsten rod; S22: fiber adhesion: adhering carbon fibers to the tungsten rod mold by using glue, the carbon fibers surround the tungsten rod mold once; S23: steel plating layer: spraying powder steel on the surface of the carbon fibers to make it surround the outer periphery of the carbon fibers and form a steel plating layer on the outer periphery of the carbon fibers; S24: pouring: preparing a mold for making metal, placing the tungsten rod mold in the mold, and pouring the molten raw material in the mold; S25: cooling and molding: the raw material is gradually cooled and molded in the mold; S26: tungsten rod burning and disassembly: heating the tungsten rod to a temperature of 800-1000℃ to directly burn the carbon fibers, after the carbon fibers are decomposed, the tungsten rod is removed, forming a plurality of pores, and the fibrous grooves of the carbon fibers adhered on the steel plating layer in the pores are retained; The S3, coating penetration treatment comprises the following specific steps: S31: liquid coating preparation: preparing liquid anticorrosive paint in a container for standby, wherein the liquid anticorrosive paint is a hydrophobic liquid coating; S32: ultrasonic vibration penetration: setting an ultrasonic vibration probe in the container, and placing the formed metal block into the container, and using ultrasonic vibration to penetrate the liquid coating into the pores of the metal; S33: secondary penetration treatment: after the first penetration, the metal block is taken out and subjected to secondary penetration treatment in the same way; S34: penetration flushing: adding water in the container with ultrasonic vibration, and quickly placing the metal block subjected to secondary penetration in the container, and using ultrasonic waves to flush the pores with water; The S4, post-processing includes the following specific steps: S41: air drying: after flushing, the metal block is lifted and air dried under natural wind until there is no excess moisture on its surface; S42: layered filtration: the water used for flushing is left to stand, and under the action of the hydrophobic liquid coating, it gradually forms a clear layer with the water; S43: liquid coating adsorption recovery: the hydrophobic liquid coating layered with the water is recovered by using a suction device.

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