Lightweight material toughening method

Abstract

The invention discloses a lightweight material toughening method, which belongs to the technical field of material processing, and comprises the following steps: S1, providing a thermocompression bonding device, spraying a setting agent on a flexible lightweight material, and carrying out preheating treatment on the flexible lightweight material; s2, the light gauze toughening layer and the flexible light material are subjected to hot pressing treatment through a hot pressing device to form a composite material; s3, the composite material is subjected to shaping and consolidation treatment through a thermocompression bonding device; s4, the composite material is cooled through a thermocompression bonding device, and then the composite material is wound; s5, the composite material is subjected to ultrasonic field hot rolling treatment, and a nanometer twin crystal structure is induced; and S6, regulating and controlling a precipitated phase in the material through aging treatment. The flexible light-weight material can be subjected to toughening treatment conveniently.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of material processing, in particular to a light-weight material toughening method. BACKGROUND

[0002] With the increasing demand for energy saving and emission reduction, light-weight materials are increasingly widely used in the fields of aerospace and automobile manufacturing. However, while pursuing low density, light-weight materials are often difficult to balance good toughness, which limits their application in high-reliability structural parts. At present, common light-weight material toughening methods include fiber reinforcement, particle toughening and phase change toughening. For example, Shanghai Kailong Decoration Engineering Co., Ltd. proposes a high-strength and tough light-weight cast aluminum alloy, which improves the uniformity of alloy liquid composition through a double-blade melting furnace and a three-step temperature rising process, introduces titanium vapor to form an interstitial solid solution, and finally induces nanotwinning through ultrasonic field hot rolling to improve toughness.

[0003] However, the above method is mainly suitable for metal alloy systems and has limited toughening effect on composite materials. Therefore, there is a need for a toughening method suitable for flexible light-weight materials in the art. SUMMARY

[0004] The application provides a light-weight material toughening method, which can facilitate toughening treatment of flexible light-weight materials.

[0005] The application provides a light-weight material toughening method, which adopts the following technical solution: A light-weight material toughening method, comprising the following steps: S1: providing a hot pressing device, spraying a sizing agent on the flexible light-weight material, and preheating the flexible light-weight material; S2: hot pressing the light-weight screen toughening layer and the flexible light-weight material into a composite material through the hot pressing device; S3: consolidating the composite material through the hot pressing device; S4: cooling the composite material through the hot pressing device, and then winding it up; S5: ultrasonic field hot rolling treatment of the composite material to induce nanotwinning structure; S6: adjusting the precipitated phase in the material through aging treatment.

[0006] By adopting the above technical solution, the flexible light-weight material is first fused with the light-weight screen toughening layer through the hot pressing device, and the impact strength of the material is greatly improved through the synergistic effect of the light-weight screen toughening layer and the nanotwinning, so as to facilitate the toughening treatment of the flexible light-weight material.

[0007] Preferably, the hot pressing device comprises a rack, a first mounting roller for placing the flexible lightweight material is arranged on the rack, a first gantry is fixedly connected to the rack, a second mounting roller for placing the lightweight mesh toughening layer is arranged on the first gantry, and a pretreatment mechanism for preheating and spraying the setting agent on the flexible lightweight material is arranged on the first gantry; a second gantry is fixedly connected to the rack, a hot pressing mechanism for hot pressing the flexible lightweight material and the lightweight mesh toughening layer into a composite material is arranged on the second gantry; a third gantry is fixedly connected to the rack, a setting mechanism for setting and consolidating the composite material is arranged on the third gantry; a cooling mechanism for cooling the composite material is arranged on the rack, and a winding roller for winding the composite material is arranged on the rack.

[0008] By adopting the above technical scheme, when the flexible lightweight material and the lightweight mesh toughening layer need to be hot pressed, the flexible lightweight material is first preheated and sprayed with a setting agent by the pretreatment mechanism, then the flexible lightweight material and the lightweight mesh toughening layer are first hot pressed into a composite material by the hot pressing mechanism, then the composite material is further set and consolidated by the setting mechanism, finally the composite material is cooled by the cooling mechanism, and the cooled composite material is collected by the winding roller, so that the flexible lightweight material and the lightweight mesh toughening layer can be conveniently hot pressed into a composite material.

[0009] Preferably, the pretreatment mechanism comprises a spraying assembly for spraying the setting agent on the flexible lightweight material and a plurality of preheating assemblies for preheating the flexible lightweight material, and the flexible lightweight material is arranged through the first gantry.

[0010] By adopting the above technical scheme, when the flexible lightweight material needs to be pretreated, the flexible lightweight material can be sprayed with a setting agent by the spraying assembly and preheated by the preheating assembly, so that the flexible lightweight material can be conveniently pretreated.

[0011] Preferably, the spraying assembly comprises a tank, the tank is mounted on the first gantry, a liquid delivery pipe is communicated with the tank, the liquid delivery pipe is arranged in the first gantry, a plurality of nozzles are mounted on the liquid delivery pipe, and the nozzles are arranged towards the flexible lightweight material.

[0012] By adopting the above technical scheme, when the flexible lightweight material needs to be sprayed with a setting agent, the setting agent is first put into the tank, and then the liquid delivery pipe and the plurality of nozzles are arranged, so that the setting agent in the tank can be conveniently sprayed onto the surface of the flexible lightweight material.

[0013] Preferably, the preheating assembly comprises a housing fixedly connected to the first gantry, a plurality of fans installed in the housing and arranged towards the flexible lightweight material, and a plurality of electric heating wires installed in the housing.

[0014] By using the above technical scheme, when the flexible lightweight material needs to be preheated, the plurality of fans and the electric heating wires can be started, the electric heating wires heat the surrounding air, and the hot air is blown to the surface of the flexible lightweight material by the fans, so that the flexible lightweight material can be preheated conveniently.

[0015] Preferably, the hot pressing mechanism comprises a first transmission roller and a second transmission roller, both of which are installed on the second gantry, the flexible lightweight material and the lightweight mesh toughening layer are arranged between the first transmission roller and the second transmission roller and become a composite material there, a plurality of pressing rollers are arranged in the second gantry, the composite material sequentially runs along an omega-shaped path around the plurality of pressing rollers, and a plurality of infrared heating assemblies for heating the composite material are arranged in the second gantry.

[0016] By using the above technical scheme, when the flexible lightweight material and the lightweight mesh toughening layer need to be hot pressed, the flexible lightweight material and the lightweight mesh toughening layer are combined into one and sequentially transmitted to the plurality of pressing rollers by the first transmission roller and the second transmission roller, the composite material runs along the omega-shaped path around the plurality of pressing rollers, and the composite material is heated by the plurality of infrared heating assemblies, so that the flexible lightweight material and the lightweight mesh toughening layer can be hot pressed conveniently.

[0017] Preferably, the infrared heating assembly comprises a reflecting cover installed in the second gantry, and a plurality of far-infrared electric heating pipes installed in the reflecting cover.

[0018] By using the above technical scheme, when the composite material needs to be heated by infrared, the plurality of far-infrared electric heating pipes are started, the radiation emitted by the far-infrared electric heating pipes is reflected to the surface of the composite material by the reflecting cover, so that the composite material can be heated by infrared conveniently.

[0019] Preferably, the shaping mechanism comprises a first electromagnetic heating roller and a second electromagnetic heating roller, both of which are installed in the third gantry, and the composite material is arranged between the first electromagnetic heating roller and the second electromagnetic heating roller.

[0020] By adopting the technical scheme, when the composite material needs to be shaped and consolidated, the first electromagnetic heating roller and the second electromagnetic heating roller are arranged, so that the composite material can be conveniently subjected to secondary hot pressing treatment, and the composite material can be conveniently shaped and consolidated.

[0021] Preferably, the cooling mechanism comprises a cooling box body arranged on the rack, and the cooling box body is provided with a gap hole for the composite material to pass through on both sides.

[0022] By adopting the technical scheme, when the composite material needs to be cooled, the composite material is first passed through the gap holes on both sides of the cooling box body and penetrates the cooling box body, and then the cooling assembly is used to cool the composite material in the cooling box body, so that the composite material can be conveniently cooled.

[0023] Preferably, the cooling assembly comprises a cooling fan installed on the rack, and the output end of the cooling fan is communicated with a air supply pipeline, and the end of the air supply pipeline away from the cooling fan is communicated with the cooling box body.

[0024] By adopting the technical scheme, when the composite material needs to be cooled, the cooling fan is started, and the cold air generated by the cooling fan is sent into the cooling box body through the air supply pipeline, so that the composite material can be conveniently cooled.

[0025] In summary, the present application has at least one of the following beneficial technical effects: 1. The flexible lightweight material and the lightweight mesh toughening layer are first fused by the hot pressing device, and the impact strength of the material is greatly improved through the synergistic effect of the lightweight mesh toughening layer and the nano twin crystal, so that the flexible lightweight material can be conveniently toughened; 2. When the flexible lightweight material and the lightweight mesh toughening layer need to be hot-pressed, the flexible lightweight material is first preheated and sprayed with a shaping agent by the pretreatment mechanism, then the flexible lightweight material and the lightweight mesh toughening layer are subjected to first hot pressing by the hot pressing mechanism to become a composite material, then the composite material is further shaped and consolidated by the shaping mechanism, and finally the composite material is cooled by the cooling mechanism, and the cooled composite material is collected by the winding roller, so that the flexible lightweight material and the lightweight mesh toughening layer can be conveniently hot-pressed to become a composite material; 3. When the flexible lightweight material and the lightweight mesh toughening layer need to be hot-pressed, the flexible lightweight material and the lightweight mesh toughening layer are combined by the first transmission roller and the second transmission roller and are sequentially transmitted to the plurality of press rollers, the composite material passes through the omega-shaped running path arranged on the plurality of press rollers, and the composite material is heated by the plurality of infrared heating assemblies, so that the flexible lightweight material and the lightweight mesh toughening layer can be hot-pressed. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the embodiment; Figure 2 is a schematic diagram of the structure of the pre-treatment mechanism in the embodiment; Figure 3 is a schematic diagram of the structure of the pre-heating assembly in the embodiment; Figure 4 is a sectional view of the hot-pressing mechanism in the embodiment; Figure 5 is a schematic diagram of the structure of the infrared heating assembly in the embodiment; Figure 6 is a schematic diagram of the structure of the cooling mechanism in the embodiment.

[0027] BRIEF DESCRIPTION OF DRAWINGS: 1, hot-pressing device; 11, rack; 12, first mounting roller; 13, first gantry; 14, second mounting roller; 15, winding roller; 16, second gantry; 17, third gantry; 2, pre-treatment mechanism; 21, spraying assembly; 211, material box; 212, liquid delivery pipe; 213, spray head; 22, pre-heating assembly; 221, shell; 222, fan; 223, heating wire; 3, hot-pressing mechanism; 311, first transmission roller; 312, second transmission roller; 313, press roller; 32, heating assembly; 321, reflecting cover; 322, far-infrared electric heating pipe; 4, shaping mechanism; 41, first electromagnetic heating roller; 42, second electromagnetic heating roller; 5, cooling mechanism; 511, cooling box; 512, clearance hole; 52, cooling assembly; 521, air cooler; 522, air supply pipeline. DETAILED DESCRIPTION

[0028] The following will be described in detail in combination with the accompanying Figures 1-6 The application will be described in further detail.

[0029] The application discloses a lightweight material toughening method, comprising the following steps: S1: providing a hot-pressing device 1, spraying a shaping agent on a flexible lightweight material, and pre-heating the flexible lightweight material; S2: hot-pressing a lightweight mesh toughening layer and the flexible lightweight material into a composite material by the hot-pressing device 1. S3: The composite material is shaped and consolidated by the hot pressing device 1; S4: The composite material is cooled by the hot pressing device 1, and then it is wound up; S5: The composite material is treated by ultrasonic field hot rolling to induce a nano-twin structure; S6: The internal precipitated phase of the material is regulated by aging treatment.

[0030] As shown in Figure 1 , the hot pressing device 1 includes a rack 11, which is square and horizontally arranged on the ground. The upper surface of the rack 11 is provided with a first mounting roller 12 for placing the flexible lightweight material, which is circular in cross-section and horizontally arranged. The rack 11 is fixedly connected with a first gantry 13, which is vertically arranged on the rack 11. The first gantry 13 is provided with a second mounting roller 14 for placing the lightweight mesh toughening layer, which is circular in cross-section and horizontally arranged. The first gantry 13 is provided with a pretreatment mechanism 2 for preheating the flexible lightweight material and spraying a setting agent.

[0031] As shown in Figure 1 , the rack 11 is fixedly connected with a second gantry 16, which is vertically arranged on the rack 11. The second gantry 16 is provided with a hot pressing mechanism 3 for hot pressing the flexible lightweight material and the lightweight mesh toughening layer into a composite material. The rack 11 is fixedly connected with a third gantry 17, which is vertically arranged on the rack 11. The third gantry 17 is provided with a shaping mechanism 4 for shaping and consolidating the composite material. The rack 11 is provided with a cooling mechanism 5 for cooling the composite material. The rack 11 is provided with a winding roller 15 for winding the composite material, which is circular in cross-section and horizontally arranged.

[0032] When the flexible lightweight material and the lightweight mesh toughening layer need to be hot pressed, the flexible lightweight material is first preheated and sprayed with a setting agent by the pretreatment mechanism 2, and then the flexible lightweight material and the lightweight mesh toughening layer are first hot pressed by the hot pressing mechanism 3 to become a composite material. Then the composite material is further shaped and consolidated by the shaping mechanism 4, and finally the composite material is cooled by the cooling mechanism 5, and the cooled composite material is collected by the winding roller 15, so that the flexible lightweight material and the lightweight mesh toughening layer can be hot pressed to become a composite material.

[0033] As shown in Figure 2As shown in the figure, the pretreatment mechanism 2 comprises a spraying assembly 21 for spraying sizing agent on the flexible lightweight material and two preheating assemblies 22 for preheating the flexible lightweight material, and the two preheating assemblies 22 are respectively arranged on the two sides of the inner wall of the first gantry 13, and the flexible lightweight material is arranged through the first gantry 13. When the fibrous lightweight material needs to be pretreated, the fibrous lightweight material can be sprayed with sizing agent by the spraying assembly 21, and the fibrous lightweight material can be preheated by the preheating assembly 22, so that the fibrous lightweight material can be pretreated conveniently.

[0034] As shown in the figure, Figure 2 The spraying assembly 21 comprises a tank 211, the tank 211 is square, the tank 211 is fixedly connected to the upper surface of the first gantry 13, the tank 211 is communicated with a liquid delivery pipe 212, the cross section of the liquid delivery pipe 212 is annular, the liquid delivery pipe 212 is L-shaped, the liquid delivery pipe 212 is arranged in the first gantry 13, a plurality of nozzles 213 are installed on the liquid delivery pipe 212, and the nozzles 213 are arranged in the vertical direction and face the flexible lightweight material. When the fibrous lightweight material needs to be sprayed with sizing agent, the sizing agent is first put into the tank 211, and then the sizing agent in the tank 211 is sprayed to the surface of the fibrous lightweight material through the arrangement of the liquid delivery pipe 212 and the plurality of nozzles 213.

[0035] As shown in the figure, Figure 2 and Figure 3 The preheating assembly 22 comprises an outer shell 221, the cross section of the outer shell 221 is trumpet-shaped, the outer shell 221 is fixedly connected in the first gantry 13, a plurality of fans 222 are installed in the outer shell 221, the plurality of fans 222 are arranged in the horizontal direction and are equidistantly arranged in sequence, the fans 222 face the flexible lightweight material, and a plurality of electric heating wires 223 are installed in the outer shell 221. When the fibrous lightweight material needs to be preheated, the plurality of fans 222 and the electric heating wires 223 can be started, the electric heating wires 223 heat the surrounding air, and the hot air is blown to the surface of the fibrous lightweight material by the fans 222, so that the fibrous lightweight material can be preheated conveniently.

[0036] As shown in the figure, Figure 4As shown, the hot pressing mechanism 3 comprises a first transmission roller 311 and a second transmission roller 312, both of which are mounted on the second gantry 16 through a support, and are arranged in a horizontal direction. The cross sections of the first transmission roller 311 and the second transmission roller 312 are circular. The flexible lightweight material and the lightweight mesh toughening layer are arranged between the first transmission roller 311 and the second transmission roller 312 and become a composite material there. Three compression rollers 313 are arranged in the second gantry 16. The composite material runs in an ω-shaped path around the outer sidewalls of the three compression rollers 313. A plurality of infrared heating assemblies 32 are arranged in the second gantry 16 for heating the composite material.

[0037] When the fibrous lightweight material and the lightweight mesh toughening layer need to be hot pressed, the fibrous lightweight material and the lightweight mesh toughening layer are combined by the first transmission roller 311 and the second transmission roller 312 and are sequentially transmitted to the plurality of compression rollers 313. The composite material runs in an ω-shaped path around the plurality of compression rollers 313, and is heated by the plurality of infrared heating assemblies 32, so that the fibrous lightweight material and the lightweight mesh toughening layer can be hot pressed.

[0038] As shown in Figure 4 and Figure 5 , the infrared heating assembly 32 comprises a reflecting cover 321, the cross section of which is trumpet-shaped. The reflecting cover 321 is mounted on the inner sidewall of the second gantry 16 by bolts. Two far-infrared electric heating tubes 322 are arranged in the reflecting cover 321. The cross sections of the far-infrared electric heating tubes 322 are circular and are arranged in a horizontal direction. When the composite material needs to be heated by infrared, the plurality of far-infrared electric heating tubes 322 are started. The radiation emitted by the far-infrared electric heating tubes 322 is reflected to the surface of the composite material by the reflecting cover 321, so that the composite material can be heated by infrared.

[0039] As shown in Figure 4 , the shaping mechanism 4 comprises a first electromagnetic heating roller 41 and a second electromagnetic heating roller 42. The cross sections of the first electromagnetic heating roller 41 and the second electromagnetic heating roller 42 are circular. The first electromagnetic heating roller 41 and the second electromagnetic heating roller 42 are mounted on the inner wall of the third gantry 17 in a horizontal direction. The composite material is arranged between the first electromagnetic heating roller 41 and the second electromagnetic heating roller 42. When the composite material needs to be shaped and consolidated, the first electromagnetic heating roller 41 and the second electromagnetic heating roller 42 are arranged, so that the composite material can be subjected to secondary hot pressing, and then the composite material can be shaped and consolidated.

[0040] As shown in Figure 6As shown, the cooling mechanism 5 includes a cooling box 511, which is square in shape and mounted on the upper surface of the frame 11 via a bracket. Both sides of the cooling box 511 have clearance holes 512 for the composite material to pass through. The clearance holes 512 have a square cross-section and extend horizontally. The frame 11 is equipped with a cooling assembly 52 for cooling the interior of the cooling box 511. When cooling of the composite material is required, the composite material is first passed through the clearance holes 512 on both sides of the cooling box 511 and then through the cooling assembly 52 to cool the composite material inside the cooling box 511, thus facilitating the cooling process.

[0041] like Figure 6 As shown, the cooling assembly 52 includes a cooler 521, which is bolted to the frame 11. The output end of the cooler 521 is connected to an air supply duct 522, which has a circular cross-section. The end of the air supply duct 522 away from the cooler 521 is connected to the interior of the cooling housing 511. When cooling of the composite material is required, the cooler 521 is activated, and the cool air produced by the cooler 521 is delivered to the cooling housing 511 through the air supply duct 522, thus facilitating the cooling of the composite material.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A method of toughening a lightweight material, characterized by: The method comprises the following steps: S1: providing a hot pressing device (1) for spraying a setting agent on the flexible lightweight material and preheating the flexible lightweight material; S2: hot pressing the lightweight mesh toughening layer and the flexible lightweight material into a composite material by the hot pressing device (1); S3: consolidating the composite material by the hot pressing device (1); S4: cooling the composite material by the hot pressing device (1) and then winding the composite material; S5: performing ultrasonic field hot rolling treatment on the composite material to induce a nano twin crystal structure; S6: adjusting and controlling the internal precipitated phase of the material by aging treatment.

2. The method of claim 1, wherein: The hot pressing device (1) comprises a rack (11), a first mounting roller (12) for placing the flexible lightweight material is arranged on the rack (11), a first gantry (13) is fixedly connected to the rack (11), a second mounting roller (14) for placing the lightweight mesh toughening layer is arranged on the first gantry (13), and a pretreatment mechanism (2) for preheating and spraying a setting agent on the flexible lightweight material is arranged on the first gantry (13); A second gantry (16) is fixedly connected to the rack (11), and a hot pressing mechanism (3) for hot pressing the flexible lightweight material and the lightweight mesh toughening layer into a composite material is arranged on the second gantry (16); A third gantry (17) is fixedly connected to the rack (11), and a setting mechanism (4) for setting and consolidating the composite material is arranged on the third gantry (17); A cooling mechanism (5) for cooling the composite material is arranged on the rack (11), and a winding roller (15) for winding the composite material is arranged on the rack (11).

3. The method of claim 2, wherein: The pretreatment mechanism (2) comprises a spraying assembly (21) for spraying a setting agent on the flexible lightweight material and a plurality of preheating assemblies (22) for preheating the flexible lightweight material, and the flexible lightweight material passes through the first gantry (13).

4. The method of claim 3, wherein: The spraying assembly (21) comprises a tank (211) mounted on the first gantry (13), a liquid conveying pipe (212) in communication with the tank (211) is arranged in the first gantry (13), a plurality of nozzles (213) are mounted on the liquid conveying pipe (212), and the nozzles (213) are arranged towards the flexible lightweight material.

5. The method of claim 3, wherein: The preheating assembly (22) comprises an outer shell (221) fixedly connected to the first gantry (13), a plurality of fans (222) are mounted in the outer shell (221) and arranged towards the flexible lightweight material, and a plurality of electric heating wires (223) are mounted in the outer shell (221).

6. The method of claim 2, wherein: The hot pressing mechanism (3) comprises a first transmission roller (311) and a second transmission roller (312), both of which are mounted on the second gantry (16), the flexible lightweight material and the lightweight net toughened layer are arranged between the first transmission roller (311) and the second transmission roller (312) and become a composite material here, a plurality of pressing rollers (313) are arranged in the second gantry (16), the composite material is arranged in a plurality of pressing rollers (313) in turn in the ω-shaped running path, a plurality of infrared heating assemblies (32) for heating the composite material are arranged in the second gantry (16).

7. The method of claim 6, wherein: The infrared heating assembly (32) comprises a reflecting cover (321) mounted in the second gantry (16), and a plurality of far-infrared electric heating pipes (322) are mounted in the reflecting cover (321).

8. The method of claim 2, wherein: The shaping mechanism (4) comprises a first electromagnetic heating roller (41) and a second electromagnetic heating roller (42), both of which are mounted in the third gantry (17), and the composite material is arranged between the first electromagnetic heating roller (41) and the second electromagnetic heating roller (42).

9. The method of claim 2, wherein: The cooling mechanism (5) comprises a cooling box (511) arranged on the rack (11), both sides of the cooling box (511) are provided with a gap hole (512) for the composite material to pass through, and the rack (11) is provided with a cooling assembly (52) for cooling the inside of the cooling box (511).

10. The method of claim 9, wherein: The cooling assembly (52) comprises a cold air machine (521) mounted on the rack (11), and the output end of the cold air machine (521) is communicated with a air supply pipeline (522), and the air supply pipeline (522) is communicated with the cooling box (511) away from the cold air machine (521).

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