High-temperature-resistant nonmetal plate, manufacturing mold and manufacturing method of high-temperature-resistant nonmetal plate

Abstract

The invention discloses a high-temperature-resistant non-metal plate, a manufacturing die and a manufacturing method.The manufacturing die comprises an upper die assembly and a lower die assembly, the upper die assembly comprises an upper compound plate, a first heat insulation plate, an upper die fixing plate and a male die which are sequentially arranged from top to bottom, and the male die is arranged in the middle of the upper die fixing plate; a first heating couple is arranged on the upper die fixing plate; the lower die assembly comprises a lower compound plate, a die corner, a cavity compound plate, a second heat insulation plate and a cavity lower die which are sequentially arranged from bottom to top, and the die corner is arranged between the lower compound plate and the two side edges of the cavity compound plate; a hollow cavity is formed in the middle of the lower cavity die, the male die can be embedded into the hollow cavity, and a second heating couple is arranged on the lower cavity die; and a jacking mechanism is arranged at the lower part of the cavity lower die. The high-temperature-resistant non-metal plate manufactured through the manufacturing method can bear scouring and ablation of high-temperature fuel gas flow when a rocket is launched, the fuel gas flow is guided to be discharged in the designated direction, and therefore ablation and damage to metal structural parts such as a launching vehicle are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of high temperature resistant non-metallic plates, and in particular to a high temperature resistant non-metallic plate, a manufacturing mould and a manufacturing method thereof. Background Art

[0002] Although the launch system has many advantages, it ejects high-temperature and high-pressure gas jets downward in the initial stage of launch, and the jet temperature and velocity can reach 3000℃ and 2000m / s or more respectively. The gas jets are rich in various chemical substances and solid particles, which will produce serious impact effects and ablation effects. The back splash of the gas flow will also affect the launch attitude, and sometimes even cause accidental ignition. Studies have shown that in launch devices with limited launch space, if the high-temperature and high-pressure gas jets cannot be reasonably and safely drained, the jets will mix with the air, and the hydrogen that has not been completely burned will further react chemically with other substances, which may cause explosions. Therefore, in order to ensure the safety of the system, it is necessary to properly drain the gas jets and guide the gas flow to a direction without destructive effects. The drainage of the gas flow directly affects the safety, versatility, and space utilization of the launch system. Therefore, it is necessary to develop a high-temperature resistant non-metallic plate laid on the metal skeleton of the diversion device to drain the high-temperature and high-pressure gas flow to the periphery to avoid damage. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology and to provide a high-temperature resistant non-metallic plate, a manufacturing mold and a manufacturing method thereof. The high-temperature resistant non-metallic plate manufacturing mold has a simple structure and reliable function, and the high-temperature resistant non-metallic plate manufactured by this manufacturing method can withstand the erosion and ablation of the high-temperature gas flow during rocket launch, and guide the gas flow to a specified direction for discharge, thereby avoiding ablation and damage to metal structures such as launch vehicles.

[0004] To achieve the above-mentioned purpose, the present invention is designed to manufacture a high-temperature resistant non-metallic plate, comprising an upper mold assembly and a lower mold assembly, wherein the upper mold assembly comprises an upper composite plate, a first heat insulation plate, an upper mold fixing plate and a punch arranged in sequence from top to bottom, wherein the punch is arranged in the middle of the upper mold fixing plate, and a first thermocouple is arranged on the upper mold fixing plate;

[0005] The lower mold assembly includes a lower composite plate, a mold angle, a cavity composite plate, a second heat insulation plate and a cavity lower mold arranged in sequence from bottom to top, wherein the mold angle is arranged between the lower composite plate and the two side edges of the cavity composite plate; the upper mold fixing plate is arranged above the cavity lower mold, a hollow cavity for molding a high temperature resistant non-metallic plate is arranged in the middle of the cavity lower mold, the convex mold can be embedded in the hollow cavity, and a second heating couple is arranged on the cavity lower mold;

[0006] A lifting mechanism is arranged at the lower part of the cavity lower die, and the lifting mechanism is used to eject the molded high-temperature resistant non-metallic plate from the cavity lower die.

[0007] Furthermore, the lifting mechanism includes an ejector block, an ejector pin, an ejector plate and a hydraulic cylinder. The top of the ejector pin extends upward, penetrates into the lower mold of the cavity and is connected to the ejector block. The bottom of the ejector pin is connected to the ejector plate. The ejector plate is arranged in a frame surrounded by the lower composite plate, the mold angle and the cavity composite plate. The hydraulic cylinder is used to drive the ejector plate to drive the ejector pin and the ejector block to move upward to eject the molded high-temperature resistant non-metallic plate from the lower mold of the cavity.

[0008] Furthermore, a plurality of columns are arranged between the lower composite plate and the cavity composite plate.

[0009] Furthermore, the upper mold assembly is provided with a plurality of guide pillars, and the lower mold assembly is provided with guide sleeves cooperating with the guide pillars, and the upper mold assembly and the lower mold assembly are positioned by the cooperation of the guide pillars and the guide sleeves.

[0010] The present invention also provides a method for manufacturing a high temperature resistant non-metallic plate using the above-mentioned manufacturing mold, comprising the following steps:

[0011] S1: Preheat the manufacturing mold to 90℃~100℃ and keep it warm for 30min~40min to make the temperature of the manufacturing mold uniform;

[0012] S2: Add the premix into the manufacturing mold, control the heating rate to 0.5℃ / min~1℃ / min, raise the temperature of the manufacturing mold to 135℃~145℃, apply pressure to 25MPa~30MPa, and keep the temperature for 60min~90min for molding;

[0013] S3: Control the heating rate to 0.3℃ / min~0.5℃ / min, raise the temperature of the manufacturing mold to 175℃~185℃ and keep it for 120min~150min to complete the curing;

[0014] S4: Cool naturally to room temperature and demould.

[0015] Furthermore, in the step S1, the manufacturing mold is preheated to 90° C. to 100° C. by the first thermocouple and the second thermocouple.

[0016] Preferably, the method for manufacturing a high temperature resistant non-metallic plate using the above-mentioned manufacturing mold of the present invention comprises the following steps:

[0017] S1: Preheat the manufacturing mold to 90°C and keep it warm for 30 minutes to make the temperature of the manufacturing mold uniform;

[0018] S2: Add the premix into the manufacturing mold, control the heating rate to 0.5℃ / min, raise the temperature of the manufacturing mold to 135℃, apply pressure to 25MPa, and keep the temperature for 60min for molding;

[0019] S3: Control the heating rate to 0.3℃ / min~0.5℃ / min, raise the temperature of the manufacturing mold to 175℃ and keep it at this temperature for 120min to complete the curing;

[0020] S4: Cool naturally to room temperature and demould.

[0021] Furthermore, in step S2, the premix is ​​prepared by mixing viscose-based carbon fiber staple fibers and phenolic resin in a mass ratio of (10-13): (6-9).

[0022] Preferably, in step S2, the premix is ​​formed by mixing viscose-based carbon fiber staple fibers and phenolic resin in a mass ratio of 13:9.

[0023] Furthermore, in step S4, the demoulding process is specifically to drive the ejector plate to drive the ejector and the ejector block to move upward under the action of the hydraulic cylinder, so as to eject the molded high-temperature resistant non-metallic plate from the lower mold of the cavity.

[0024] The present invention also provides a high temperature resistant non-metallic plate, characterized in that: it is manufactured by the above method and can withstand temperatures above 3500°.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] First, the high-temperature resistant non-metallic plate manufactured by the manufacturing method of the present invention can withstand the erosion and ablation of the high-temperature gas flow during rocket launch, and guide the gas flow to a specified direction, thereby avoiding ablation and damage to metal structural parts such as the launch vehicle.

[0027] Secondly, the high temperature resistant non-metallic plate manufacturing mold of the present invention has a simple structure and reliable functions, and the upper mold assembly and the lower mold assembly are positioned by the cooperation of guide pillars and guide sleeves to ensure accurate positioning during the mold closing process.

[0028] Thirdly, the high temperature resistant non-metallic plate manufacturing mold of the present invention is designed with a lifting mechanism. Driven by the hydraulic cylinder, the ejector plate, the ejector and the ejector block move upward together, thereby ejecting the molded high temperature resistant non-metallic plate from the lower mold of the cavity, and the demolding method is convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A three-dimensional structural schematic diagram of a mold for manufacturing a high-temperature resistant non-metallic plate;

[0030] Figure 2 for Figure 1The schematic diagram of the main structure of the high temperature resistant non-metallic plate manufacturing mold shown;

[0031] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0032] Figure 4 for Figure 2 A schematic diagram of the cross-sectional structure along the BB direction;

[0033] Figure 5 for Figure 1 A schematic diagram of the top view of the high temperature resistant non-metallic plate manufacturing mold shown;

[0034] Figure 6 for Figure 1 The schematic diagram of the structure of the mold for manufacturing high temperature resistant non-metallic plate from bottom up is shown;

[0035] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure along the CC direction;

[0036] Figure 8 It is a structural schematic diagram of a high temperature resistant non-metallic plate;

[0037] Fig. 9 is a schematic diagram of the structure of the diversion device;

[0038] In the figure: upper mold assembly 1, upper composite plate 101, first heat insulation plate 102, upper mold fixing plate 103, punch 104, lower mold assembly 2, lower composite plate 201, mold angle 202, cavity composite plate 203, second heat insulation plate 204, cavity lower mold 205, hollow cavity 2051, column 206, lifting mechanism 3, ejector block 301, ejector pin 302, ejector plate 303, hydraulic cylinder 304, first heating couple 4, second heating couple 5, guide column 6, guide sleeve 7, premix 8, high temperature resistant non-metallic plate 9, and flow guide device 10. DETAILED DESCRIPTION

[0039] The following is a detailed description of the implementation of the present invention in conjunction with the implementation cases, but they do not constitute a limitation of the present invention and are only given as examples. At the same time, the advantages of the present invention will become clearer and easier to understand through the description.

[0040] like Figure 1 to Figure 7A manufacturing mold for a high-temperature resistant non-metallic plate shown in FIG. 1 includes an upper mold assembly 1 and a lower mold assembly 2. The upper mold assembly 1 includes an upper composite plate 101, a first heat insulation plate 102, an upper mold fixing plate 103 and a punch 104 arranged from top to bottom. The upper mold fixing plate 103 and the first heat insulation plate 102 are fixed to the upper composite plate 101 by screws. The punch 104 is arranged in the middle of the upper mold fixing plate 103. The punch 104 is fixed to the upper mold fixing plate 103 by screws. A first heating couple 4 is arranged on the upper mold fixing plate 103. The lower mold assembly 2 includes a lower composite plate 201, a mold angle 202, a cavity composite plate 203, a second heat insulation plate 204 and a cavity lower mold 205 arranged from bottom to top. The mold angle 202 is arranged between the lower composite plate 201 and the two sides of the cavity composite plate 203. The mold angle 202 is fixed to the lower composite plate 201 by screws; the second heat insulation plate 204 and the cavity lower mold 205 are fixed to the cavity composite plate 203 by screws. The upper mold fixing plate 103 is arranged above the cavity lower mold 205. The middle part of the cavity lower mold 205 is provided with a hollow cavity 2051 for molding a high temperature resistant non-metallic plate. The punch 104 can be embedded in the hollow cavity 2051. The cavity lower mold 205 is provided with a second heating couple 5. A lifting mechanism 3 is provided at the lower part of the cavity lower mold 205 , and the lifting mechanism 3 is used to eject the molded high-temperature resistant non-metallic plate from the cavity lower mold 205 .

[0041] like Figure 2 and Figure 3 , Figure 7 As shown, the lifting mechanism 3 includes an ejector block 301, an ejector pin 302, an ejector plate 303 and a hydraulic cylinder 304. The ejector block 301 and the ejector pin 302 are fixed to the ejector plate 303 by screws. The top of the ejector pin 302 extends upward to penetrate the cavity lower mold 205 and connects to the ejector block 301. The bottom of the ejector pin 302 is connected to the ejector plate 303. The ejector plate 303 is arranged in a frame surrounded by the lower composite plate 201, the mold angle 202 and the cavity composite plate 203. The hydraulic cylinder 304 is used to drive the ejector plate 303 to drive the ejector pin 302 and the ejector block 301 to move upward to eject the molded high temperature resistant non-metallic plate from the cavity lower mold 205. A plurality of columns 206 are also arranged between the lower composite plate 201 and the cavity composite plate 203. The columns 206 are connected to the lower composite plate 201 by screws to play a limiting role.

[0042] like Figure 4 As shown, the upper mold assembly 1 is provided with a plurality of guide pillars 6, and the lower mold assembly 2 is provided with a guide sleeve 7 that cooperates with the guide pillars 6. The upper mold assembly 1 and the lower mold assembly 2 are positioned by the cooperation of the guide pillars 6 and the guide sleeve 7 to ensure accurate positioning during the mold closing process.

[0043] The method for manufacturing a high temperature resistant non-metallic plate using the above-mentioned manufacturing mold of the present invention comprises the following steps:

[0044] S1: preheating the manufacturing mold to 90°C to 100°C through the first heating couple 4 and the second heating couple 5, and keeping the temperature for 30min to 40min to make the temperature of the manufacturing mold uniform;

[0045] S2: Add a premix into the manufacturing mold, wherein the premix is ​​a mixture of viscose-based carbon fiber staples and phenolic resin in a mass ratio of 10-13:6-9, control the heating rate to 0.5°C / min-1°C / min, raise the temperature of the manufacturing mold to 135°C-145°C, apply a pressure of 25MPa-30MPa, and keep the temperature for 60min-90min for molding;

[0046] S3: Control the heating rate to 0.3℃ / min~0.5℃ / min, raise the temperature of the manufacturing mold to 175℃~185℃ and keep it for 120min~150min to complete the curing;

[0047] S4: After the entire molding process is completed, the first heating couple 4 and the second heating couple 5 are powered off, naturally cooled to room temperature, and demolding is performed. The demolding process is specifically to drive the ejector plate 303 under the action of the hydraulic cylinder 304 to drive the ejector 302 and the ejector block 301 to move upward, thereby ejecting the molded high-temperature resistant non-metallic plate 9 from the cavity lower mold 205 to complete the demolding.

[0048] Embodiment 1:

[0049] The method of manufacturing a high temperature resistant non-metallic plate using the above-mentioned manufacturing mold in this embodiment includes the following steps:

[0050] S1: preheating the manufacturing mold to 90°C through the first heating couple 4 and the second heating couple 5, and keeping the temperature for 30 minutes to make the temperature of the manufacturing mold uniform;

[0051] S2: Add premix into the manufacturing mold. The premix is ​​a mixture of viscose-based carbon fiber staples and phenolic resin in a mass ratio of 13:9. The heating rate is controlled to be 0.5°C / min, so that the temperature of the manufacturing mold is raised to 135°C. The pressure is 25MPa, and the mold is kept warm for 60 minutes for molding.

[0052] S3: Control the heating rate to 0.3℃ / min~0.5℃ / min, raise the temperature of the manufacturing mold to 175℃ and keep it at this temperature for 120min to complete the curing;

[0053] S4: After the entire molding process is completed, the first heating couple 4 and the second heating couple 5 are powered off, naturally cooled to room temperature, and demolding is performed. The demolding process is specifically to drive the ejector plate 303 under the action of the hydraulic cylinder 304 to drive the ejector 302 and the ejector block 301 to move upward, thereby ejecting the molded high-temperature resistant non-metallic plate 9 from the cavity lower mold 205 to complete the demolding.

[0054] The high temperature resistant non-metallic plate manufactured in Example 1 was subjected to performance testing, and the test results obtained are shown in Table 1, which shows that the plate can withstand the high temperature gas flow of rocket launch.

[0055] Table 1

[0056] Serial number Test items Performance Indicators 1 Tensile test 50MPa 2 Bending test 100MPa 3 Compression test 150MPa 4 Impact test <![CDATA[20kJ / m 2 ]]> 5 Density experiment <![CDATA[150g / cm 3 ]]> 6 Ablation experiment 0.03mm / s

[0057] like Figure 8 The high temperature resistant non-metal plate shown is manufactured by the method of Example 1. The high temperature resistant non-metal plate can withstand temperatures above 3500° and has an arc-shaped structure. Fig. 9 As shown, the surface of the guide device 10 is formed by splicing the above-mentioned high temperature resistant non-metal plates.

[0058] The above are only specific embodiments of the present invention. It should be pointed out that any changes or substitutions that can be easily thought of by any technician familiar with the field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. The rest not described in detail are prior arts.

Claims

1. A manufacturing mold for high temperature resistant non-metallic plates, characterized in that: The invention comprises an upper mold assembly (1) and a lower mold assembly (2), wherein the upper mold assembly (1) comprises an upper composite plate (101), a first heat insulation plate (102), an upper mold fixing plate (103) and a punch (104) which are arranged in sequence from top to bottom, wherein the punch (104) is arranged in the middle of the upper mold fixing plate (103), and a first heating couple (4) is arranged on the upper mold fixing plate (103); The lower mold assembly (2) comprises a lower composite plate (201), a mold angle (202), a cavity composite plate (203), a second heat insulation plate (204) and a cavity lower mold (205) which are arranged in sequence from bottom to top, wherein the mold angle (202) is arranged between the lower composite plate (201) and the two side edges of the cavity composite plate (203); the upper mold fixing plate (103) is arranged above the cavity lower mold (205); a hollow cavity (2051) for molding a high-temperature resistant non-metallic plate is arranged in the middle of the cavity lower mold (205); the punch (104) can be embedded in the hollow cavity (2051); and a second heating couple (5) is arranged on the cavity lower mold (205); A lifting mechanism (3) is provided at the lower part of the cavity lower die (205), and the lifting mechanism (3) is used to eject the molded high-temperature resistant non-metallic plate from the cavity lower die (205) for demoulding.

2. The manufacturing mold for high temperature resistant non-metallic plate according to claim 1, characterized in that: The ejection mechanism (3) comprises an ejector block (301), an ejector pin (302), an ejector plate (303) and a hydraulic cylinder (304); the top of the ejector pin (302) extends upward and penetrates into the cavity lower mold (205) to be connected to the ejector block (301); the bottom of the ejector pin (302) is connected to the ejector plate (303); the ejector plate (303) is arranged in a frame surrounded by the lower composite plate (201), the mold angle (202) and the cavity composite plate (203); the hydraulic cylinder (304) is used to drive the ejector plate (303) to drive the ejector pin (302) and the ejector block (301) to move upward to eject the molded high-temperature resistant non-metallic plate from the cavity lower mold (205) for demolding.

3. The manufacturing mold for high temperature resistant non-metallic plate according to claim 2, characterized in that: A plurality of columns (206) are also arranged between the lower composite plate (201) and the cavity composite plate (203).

4. The manufacturing mold for high temperature resistant non-metallic plate according to claim 1, 2 or 3, characterized in that: The upper mold assembly (1) is provided with a plurality of guide pillars (6), and the lower mold assembly (2) is provided with guide sleeves (7) that cooperate with the guide pillars (6). The upper mold assembly (1) and the lower mold assembly (2) are positioned by the cooperation of the guide pillars (6) and the guide sleeves (7).

5. A method for manufacturing a high temperature resistant non-metallic plate using the manufacturing mold according to any one of claims 1 to 4, characterized in that: The steps include: S1: Preheat the manufacturing mold to 90℃~100℃ and keep it warm for 30min~40min to make the temperature of the manufacturing mold uniform; S2: Add the premix into the manufacturing mold, control the heating rate to 0.5℃ / min~1℃ / min, raise the temperature of the manufacturing mold to 135℃~145℃, apply pressure to 25MPa~30MPa, and keep the temperature for 60min~90min for molding; S3: Control the heating rate to 0.3℃ / min~0.5℃ / min, raise the temperature of the manufacturing mold to 175℃~185℃ and keep it for 120min~150min to complete the curing; S4: Cool naturally to room temperature and demould.

6. The method according to claim 5, characterized in that: In the step S1, the manufacturing mold is preheated to 90° C. to 100° C. by the first thermocouple (4) and the second thermocouple (5).

7. The method according to claim 6, characterized in that: In the step S2, the premix is ​​prepared by mixing viscose-based carbon fiber staple fibers and phenolic resin in a mass ratio of (10-13): (6-9).

8. The method according to claim 7, characterized in that: In the step S2, the premix is ​​prepared by mixing viscose-based carbon fiber staple fibers and phenolic resin in a mass ratio of 13:

9.

9. The method according to claim 8, characterized in that: In step S4, the demoulding process specifically involves driving the ejector plate (303) to drive the ejector (302) and the ejector block (301) to move upward under the action of the hydraulic cylinder (304), thereby ejecting the molded high-temperature resistant non-metallic plate from the cavity lower mold (205).

10. A high temperature resistant non-metallic plate, characterized in that: The high temperature resistant non-metallic plate is manufactured by the method described in any one of claims 5 to 9, and can withstand high temperatures above 3500°.

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