CN116609218A - Full-automatic thermal shock device for ceramic composite material and test method - Google Patents
Full-automatic thermal shock device for ceramic composite material and test method Download PDFInfo
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- 230000035939 shock Effects 0.000 title claims abstract description 101
- 239000000919 ceramic Substances 0.000 title claims abstract description 34
- 239000002131 composite material Substances 0.000 title claims abstract description 32
- 238000010998 test method Methods 0.000 title claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims description 41
- 238000004321 preservation Methods 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 26
- 230000008569 process Effects 0.000 claims description 19
- 229910000838 Al alloy Inorganic materials 0.000 claims description 17
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 17
- 229910052863 mullite Inorganic materials 0.000 claims description 17
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
- 239000011449 brick Substances 0.000 claims description 15
- 229910052593 corundum Inorganic materials 0.000 claims description 15
- 239000010431 corundum Substances 0.000 claims description 15
- 238000012544 monitoring process Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 230000000630 rising effect Effects 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 11
- 230000002572 peristaltic effect Effects 0.000 claims description 11
- 229920006395 saturated elastomer Polymers 0.000 claims description 8
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- GALOTNBSUVEISR-UHFFFAOYSA-N molybdenum;silicon Chemical compound [Mo]#[Si] GALOTNBSUVEISR-UHFFFAOYSA-N 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 4
- 229910010271 silicon carbide Inorganic materials 0.000 description 19
- 238000010586 diagram Methods 0.000 description 12
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 7
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- 239000000835 fiber Substances 0.000 description 4
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 239000011153 ceramic matrix composite Substances 0.000 description 2
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- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910000601 superalloy Inorganic materials 0.000 description 2
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- 238000005452 bending Methods 0.000 description 1
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- 230000007123 defense Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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Abstract
The invention discloses a full-automatic thermal shock device for ceramic composite materials, which belongs to the technical field of thermal shock of ceramic composite materials and aims to solve the problem that the conventional muffle furnace thermal shock test method can not accurately obtain a temperature system curve of a thermal shock test; the invention can improve the bearing capacity and the loading capacity of the furnace body, simultaneously realize the purpose of automatic temperature control, improve the temperature control precision, solve the problems of low efficiency of manually clamping samples and difficult accurate control of the thermal shock test conditions in the past, improve the operation efficiency and accurately obtain the temperature system curve of the thermal shock test.
Description
Technical Field
The invention relates to the technical field of ceramic composite material thermal shock, in particular to a full-automatic thermal shock device and a test method for ceramic composite materials.
Background
The ceramic matrix composite (CMC-SiC) is formed by compounding silicon carbide ceramic serving as a matrix with continuous ceramic fibers, has the advantages of metal-like fracture behavior, insensitivity to cracks, no catastrophic damage, high temperature resistance, gao Bijiang, gao Bigang and the like.
Has wide application prospect in the national defense fields such as aerospace and the like, and is one of the leading edge materials in the advanced material field. The CMC-SiC composite material mainly comprises two kinds of carbon fiber reinforced and silicon carbide fiber reinforced silicon carbide ceramic matrix composite materials (Cf/SiC, siCf/SiC). Compared with other superalloy and single-phase ceramic, CMC-SiC composite material has low density (only 1/3-1/4 of that of superalloy), high temperature resistance (can work for hundreds or thousands of hours within the range of 700-1650 ℃), and higher oxidation stability; compared with single-phase ceramics, the strain tolerance of the CMC-SiC composite material is greatly improved.
The application research of the fiber reinforced silicon carbide composite material at home and abroad is mainly focused on the fields of aerospace, aviation and the like. In the field of aviation, fiber reinforced silicon carbide composite materials are the first choice materials of key high-temperature components such as turbine blades, guide blades, combustion chambers, outer walls, floating walls, heat shields of afterburners, flame stabilizers, regulating sheets of tail nozzles, sealing sheets and the like by virtue of excellent high-temperature resistance and low-density properties.
At present, the research on CMC-SiC performance is mainly focused on the aspects of mechanical performance, high-temperature oxidation performance and thermal shock performance. The research on the performance evaluation system and the service life evaluation model is still in the basic research stage, and particularly the performance evaluation on the hot section part in the high-temperature oxidation service environment is performed. According to the report of vanRoode et al, due to the hydrolysis of SiC caused by high temperature gas, the service lives of the inner and outer walls of the SiC composite engine combustion chamber are generally less than 5000 hours at 1200 ℃, and the service life requirement of the commercial engine cannot be met. In the long-time service environment process, the CMC-SiC engine part bears abrupt temperature change, and the thermal shock resistance of the material becomes a key index for verifying the service reliability of the CMC-SiC engine part. However, a temperature system curve of a thermal shock test cannot be accurately obtained by adopting a conventional muffle furnace thermal shock test method, a precise temperature control thermal shock test method of CMC-SiC is not established, an influence rule of thermal shock circulation conditions on the thermal shock resistance of CMC-SiC is difficult to establish, and the service life prediction and design of CMC-SiC engine parts cannot be effectively guided.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a full-automatic thermal shock device, a tool and a test method for ceramic composite materials, and solves the problem that the conventional muffle furnace thermal shock test method cannot accurately obtain a temperature system curve of a thermal shock test.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
in one aspect, a full-automatic thermal shock device for ceramic composite materials is provided, which comprises a supporting system, wherein the supporting system comprises a section bar frame, a heating and heat-preserving system is arranged in the section bar frame, a lifting system is arranged right below the heating and heat-preserving system, a display control system is arranged on one side of the lifting system, an alloy plate is arranged on the section bar frame at the lifting system, and the display control system, the heating and heat-preserving system and the lifting system are connected with an input power supply through the alloy plate.
The full-automatic thermal shock device has the structural design of the large-space under-loading furnace body, achieves the aim of thermal shock test of large-batch and heavy-weight products, can improve the bearing capacity and the loading capacity of the furnace body, simultaneously achieves the automatic temperature rising and falling function of the furnace body through the display control system, the heating and heat preservation system and the lifting system, can preset power to meet the requirement of rapid temperature rising, automatically reduces the power after reaching preset temperature, achieves the aim of automatic temperature control, improves the temperature control precision, solves the problems of low efficiency, inconsistent clamping speed and difficult accurate control of thermal shock test conditions of the traditional manual sample clamping, does not need manual continuous on-duty operation, improves the working efficiency, and accurately obtains the temperature system curve of the thermal shock test.
Further, the section bar frame comprises a plurality of industrial aluminum alloys, and the industrial aluminum alloys are fixedly connected with the L-shaped aluminum alloys through fasteners to form the section bar frame; the bottom of the section bar frame is provided with universal wheels; the alloy plate is provided with a plurality of heat dissipation circular grooves and wire inlets.
In this scheme, the section bar frame includes many industry aluminum alloy, adopts above-mentioned scheme, adopts many industry aluminum alloy to pass through fastener and L type aluminum alloy fixed angle to connect and constitutes the section bar frame to be provided with the universal wheel in the bottom of section bar frame, provide support to display control system, heating insulation system and operating system through the section bar frame, and through the universal wheel, conveniently remove the position of this device.
Further, the lifting system comprises a lifting platform which is arranged on the profile frame through a lifting column; the lifting platform is provided with a corundum crucible, and the corundum crucible is provided with a corundum backing plate through a ceramic support column; a silica gel ring is arranged between the lifting platform and the lifting column; the upper surface of the lifting platform is provided with a door plug, and a fan is arranged beside the lifting platform.
In this scheme, lift platform passes through the lift post and installs on the section bar frame, adopts above-mentioned scheme, places corundum crucible on lift platform, through corundum crucible in order to bear the sample to realize the loading of sample.
Further, the lifting system further comprises a ball screw and a linear slide rail module, one end of the ball screw is connected with the stepping motor, and the other end of the ball screw is connected with the heating and heat-preserving system; the linear slide rail module is arranged on the section bar frame and is connected with the heating and heat preserving system.
In this scheme, operating system still includes ball and linear slide rail module, adopts above-mentioned scheme, through ball and step motor's cooperation to realize the automated test demand to the sample business turn over furnace body.
Further, the heating and heat-preserving system comprises a hearth and a furnace door positioned below the hearth, wherein an aluminum oxide heat-preserving layer and a silicon-molybdenum rod penetrating through the aluminum oxide heat-preserving layer and arranged on the profile frame are arranged in the hearth; one side of the hearth is provided with a steam generator and a preheating furnace which are communicated with the inside of the hearth, and the steam generator is provided with a saturated steam outlet, a peristaltic pump, a water inlet and an injection pump; an inert gas inlet and a saturated steam inlet are arranged on the peristaltic pump; the furnace is internally provided with a smoke outlet which penetrates through the furnace and extends to the outside of the profile frame.
The heating and heat-preserving system is arranged in the scheme, and can meet test requirements of sample temperature rise, heat preservation, atmosphere, air pressure environment guarantee and the like.
Further, the display control system comprises a PLC monitoring display screen which is arranged on the section bar frame through a mechanical arm, and the PLC monitoring display screen is respectively connected with the electric box, the temperature control device and the furnace door transformer.
In this scheme, display control system includes the PLC control display screen of installing on the section bar frame through robotic arm, adopts above-mentioned scheme, but through display control system preset circulation technology, contains settlement temperature, constant temperature time, circulation number of times and can carry out thermal shock circulation test to the work piece to real-time supervision circulation technology, circulation number of times, temperature and heat preservation time.
Further, the device also comprises a thermal shock tool, wherein the thermal shock tool is a microcrystalline mullite brick, and a plurality of fixing hole sites are formed in the microcrystalline mullite brick.
In this scheme, thermal shock frock adopts the microcrystalline mullite brick, adopts above-mentioned scheme, and mullite is more stable compound, and recrystallization ability is weak, and in the heating process promptly, mullite microcrystal is difficult to gather and grows big, conveniently fixes the sample.
In another aspect, a test method using a full-automatic thermal shock device for ceramic composite materials is provided, which is characterized by comprising the steps of:
s1: measuring the size of a sample, and opening a fixing hole site for loading the sample on a preset microcrystalline mullite brick by adopting an engraving machine according to the size of the sample;
s2: weighing the weight of the sample, loading the sample by adopting a thermal shock tool, photographing and recording, and placing the thermal shock tool on a lifting platform;
s3: setting a temperature control degree, and starting a hearth heating program through a PLC monitoring display screen, wherein the method comprises the following steps:
setting the temperature of a hearth on a PLC monitoring display screen from room temperature to 200-300 ℃, wherein the temperature rising rate is 7-8 ℃/min, fully preheating the hearth, setting the temperature rising rate to 5-10 ℃/min when the temperature rises to 1000-1500 ℃ from 200-300 ℃, setting the heat preservation time to 10-1000 min according to the actual working time of the day, setting the temperature reducing program to reduce the temperature to 200-300 ℃ from 1000-1500 ℃, and reducing the temperature according to 5-10 ℃/min;
s4: setting a preheating and heat-preserving process and the impact times of the hearth on the thermal shock of the sample in the hearth;
s5: setting automatic thermal shock circulation of the hearth to the sample in the hearth;
s6: and after the test sample is cooled to room temperature by air, taking out the test sample, weighing the test sample, and calculating the weight change of the test sample before and after different times of thermal shock cycles to finish the thermal shock test.
Further, in step S4, a thermal shock preheating and heat preserving process and a number of impact times are set, which specifically includes: setting the circulation times according to the working requirements of the day, wherein the circulation times are set to be 2-99999 times, the heat preservation time is 7-10 min, the effective heat preservation time is 3-5 min30s +/-5 s, the rest 1-1 min30s +/-5 s is the heating time caused by the temperature change of the heat circulation switching hearth, and the cooling time is 3-5 min.
Further, the method for setting the automatic impact cycle in step S5 is as follows: after the temperature is raised to the heat preservation temperature of 1000-1500 ℃ for 1-5 hours, the thermal shock circulation process enters an automatic control state, wherein the state comprises the opening of the door plug and the lifting of the furnace door, the process of starting the heat preservation stage when the furnace door reaches the stroke, the falling of the furnace door and the closing stroke of the door plug until the sample is cooled.
The invention discloses a full-automatic thermal shock device and a test method for ceramic composite materials, which have the beneficial effects that:
1. the full-automatic thermal shock device has the structural design of the large-space lower loading furnace body, can realize the thermal shock test purpose of large-batch and heavy products, and has the maximum bearing weight of 20KG, which is improved by more than 50 percent compared with the bearing and loading capacity of a muffle furnace. Meanwhile, the device has the function of automatically switching the furnace door and the door plug and the function design of automatically heating and cooling the furnace body, the furnace door is driven to horizontally move together through the cooperative movement of the ball screw, the stepping motor, the coupler and the linear sliding rail module, so that the furnace door is automatically opened and closed, the problem of sudden reduction of the furnace temperature during the switching of the furnace door and the door plug in the thermal cycle process is solved by combining a thermocouple, an automatic power compensation controller and a temperature controller, the power can be preset to meet the requirement of rapid heating, the power can be automatically reduced after the preset temperature is reached, the aim of automatic temperature control is fulfilled, the temperature control precision can reach +/-1-5 ℃, the problems that the efficiency of manually clamping a sample is low, the clamping speed is inconsistent and the thermal shock test condition is difficult to accurately control in the past are solved, manual continuous on duty operation is not needed, and the operation efficiency is improved by 5-8 times compared with a muffle furnace.
2. The full-automatic thermal shock device has the advantages that the automatic monitoring program design in the thermal shock circulation process is realized, the problem that temperature change data in the conventional muffle furnace thermal shock test is rough and sparse, the actual temperature and power change curves with time in the circulation process are lacked, the automatic monitoring temperature function realizes the accurate temperature control requirement, the actual temperature rise rate, the heat preservation time, the actual power and other parameter changes of each circulation can be monitored, and the data stability of each circulation is ensured.
3. The full-automatic thermal shock device has the design of adjustable environmental atmosphere, realizes adjustable vapor pressure in the furnace through the inert gas inlet, the saturated vapor inlet and the saturated vapor outlet, and can complete full-automatic simulated working condition atmosphere thermal shock test under the inert atmosphere condition, the vapor environment and the water-oxygen coupling condition
4. The thermal shock tool disclosed by the invention adopts the microcrystalline mullite brick, has the advantages of no oxidization, no deformation, thermal shock resistance and the like in a high-temperature environment ranging from room temperature to 1500 ℃, can enable samples to be vertically loaded in a 'transplanting mode' according to the structural design of a microcrystalline mullite brick carving part with the size of the samples, meets the loading requirements of the samples with different sizes, ensures that each sample is fully contacted with the high-temperature air environment and is not mutually influenced, and further provides effective guarantee for thermal shock resistance data of subsequent test materials.
Drawings
Fig. 1 is a schematic structural view of a full-automatic thermal shock device for ceramic composite materials according to the present invention.
Fig. 2 is a schematic structural view of the support system of the present invention.
Fig. 3 is a schematic view of the internal structure of the support system of the present invention.
Fig. 4 is a schematic structural diagram of the lifting system of the present invention.
Fig. 5 is a schematic structural diagram of the heating and insulating system of the present invention.
Fig. 6 is a schematic structural diagram of a display control system according to the present invention.
Fig. 7 is a schematic structural diagram of a mechanical arm and a PLC monitoring display screen according to the present invention.
FIG. 8 is a schematic structural view of an alloy sheet material according to the present invention.
Fig. 9 is a schematic structural diagram of a thermal shock tool according to the present invention.
Fig. 10 is a schematic structural diagram of another thermal shock tool according to the present invention.
FIG. 11 is a schematic flow chart of a full-automatic thermal shock method of the ceramic composite material of the invention.
FIG. 12 is a graph showing the temperature profile of the full-automatic thermal shock test for the ceramic composite material of the present invention.
Wherein, 1, a full-automatic thermal shock device; 11. a support system; 21. a lifting system; 31. a heating and heat preserving system; 41. a display control system;
101. a section bar frame; 102. a fastener; 103. fixing angles of L-shaped aluminum alloy; 104. a universal wheel; 105. alloy sheet material; 106. a heat dissipation circular groove; 107. wiring grooves; 108. a wire inlet hole;
201. a stepping motor; 202. a ball screw; 203. a lifting platform; 204. a blower; 205. a door plug; 206. a linear slide rail module; 207. corundum crucible; 208. corundum backing plate; 209. silica gel rings, 210, ceramic support columns, 211 and lifting columns; 212. a syringe pump; 213. a coupling;
301. a silicon molybdenum rod; 302. alumina insulation layer, 303, hearth; 304. a furnace door; 305. a saturated water vapor outlet; 306. a water vapor generator; 307. a peristaltic pump; 308. a water inlet; 309. an inert gas inlet; 310. a saturated water vapor inlet; 311. inputting a power supply; 312. a smoke outlet; 313. a temperature control thermocouple; 314. a preheating furnace;
401. a temperature control device; 402. the PLC monitors the display screen; 403. an electric box; 404. a furnace door transformer; 405. a mechanical arm; 4001. an automatic power compensation controller; 4002. a temperature controller;
51. a thermal shock tool; 501. microcrystalline mullite brick; 502. fixing the hole site.
Detailed Description
While specific embodiments of the present invention have been described in order to facilitate understanding of the present invention by those skilled in the art, it should be apparent that the present invention is not limited to the scope of the specific embodiments, and that all the inventions which make use of the inventive concept are within the spirit and scope of the present invention as defined and defined by the appended claims to those skilled in the art.
Example 1
Referring to fig. 1, a schematic structural diagram of a full-automatic thermal shock device for ceramic composite material according to the present embodiment is provided, which aims to solve the problem that the conventional muffle furnace thermal shock test method cannot accurately obtain the temperature system curve of the thermal shock test, and the specific structure in the present embodiment will be described in detail below.
The full-automatic thermal shock device for the ceramic composite material comprises a supporting system 11, wherein the supporting system 11 comprises a section bar frame 101, a heating and heat-preserving system 31 is arranged in the section bar frame 101, and a lifting system 21 is arranged right below the heating and heat-preserving system 31.
Specifically, a display control system 41 is arranged on one side of the lifting system 21, an alloy plate 105 is arranged on the profile frame 101 at the lifting system 21 as an equipment shell, and the display control system 41, the heating and heat preservation system 31 and the lifting system 21 are connected with an input power supply 311 through the alloy plate 105.
In this embodiment, the full-automatic thermal shock device 1 has a large-space lower loading furnace body structural design, realizes the thermal shock test purpose of a large number of large-weight products, can improve the bearing and loading capacity of the furnace body, and simultaneously, the device realizes the automatic temperature rising and falling function of the furnace body through the display control system 41, the heating and heat preservation system 31 and the lifting system 21, can preset power to meet the rapid temperature rising requirement, can automatically reduce the power after reaching the preset temperature, realizes the automatic temperature control purpose, improves the temperature control precision, solves the problems of low efficiency, inconsistent clamping speed and difficult accurate control of thermal shock test conditions of the traditional manual clamping sample, does not need manual continuous on duty operation, improves the operation efficiency, and accurately obtains the temperature system curve of the thermal shock test.
Example 2
Referring to fig. 2, 3 and 8, a schematic structural diagram of a support system 11 of the present embodiment is provided for the purpose of providing support for a display control system, a heating and insulation system and a lifting system, and a further scheme of the support system 11 is provided in the present embodiment.
The profile frame 101 comprises a plurality of industrial aluminum alloys, and the industrial aluminum alloys are connected with an L-shaped aluminum alloy fixed angle 103 through a fastener 102 to form the profile frame 101.
Specifically, the bottom of the profile frame 101 is provided with a universal wheel 104, and the alloy plate 105 is provided with a plurality of heat dissipation circular grooves 106 and wire inlets 108.
In the embodiment, the supporting system 11 is formed by 15-40 industrial aluminum alloy frames 101 with the length of 400-2500mm and 50-80 type industrial aluminum alloy frames serving as equipment outer frames, and a plurality of industrial aluminum alloys are connected with an L-shaped aluminum alloy fixed angle 103 through fasteners 102.
The bottom of the profile frame 101 at the bottom of the outer frame of the equipment is respectively connected with 4 groups of metal universal wheels 104 through fasteners, the sizes of the universal wheels 104 are matched with the sizes of the profile frames 101, the profile frames 101 are filled with alloy plates 105 to serve as the outer frame of the equipment, a plurality of heat dissipation round grooves 106, wiring grooves 107 and wire inlet holes 108 are arranged on the alloy plates 105, the heat dissipation round grooves 106 are used for carrying out internal and external air convection to dissipate heat, and wires are led into the equipment through the wiring grooves 107 and the wire inlet holes 108.
In this embodiment, the alloy plate 105 is manufactured by a sheet metal process, 200-600 heat dissipation round grooves 106 with the lengths of 20-40 mm and the rounded angles of R1-5 are formed on the surface of the alloy plate 105, two wire inlet positions 108 are provided, the diameter of the round holes is 10-40 mm, and the size of the rectangular positions is 20-50 x 40-60 mm.
Example 3
Referring to fig. 4, a schematic structural diagram of a lifting system of the present embodiment is provided, and the purpose of the lifting system is to realize loading of a sample and automatic test requirements for the sample entering and exiting the furnace body, and a further scheme of the lifting system 21 is provided in the present embodiment.
The lifting system 21 comprises a lifting platform 203, the lifting platform 203 being mounted on the profile frame 101 by means of lifting columns 211.
Specifically, a corundum crucible 207 is arranged on the lifting platform 203, a corundum base plate 208 is arranged on the corundum crucible 207 through a ceramic supporting column 210, a silica gel ring 209 is arranged between the lifting platform 203 and the lifting column 211, a door plug 205 is arranged on the upper surface of the lifting platform 203, and a fan 204 is arranged beside the lifting platform 203.
In this embodiment, the lifting platform 203 is a square platform 300-350×300-350×100-150 mm, the lifting platform with the maximum bearing weight of 10-20 KG is a square platform 300-350×300-350×100-150 mm, the maximum bearing weight of 10-20 KG, and the corundum crucible 207 is placed on the lifting platform 203, so that the sample is loaded by the corundum crucible 207.
The lifting system 21 further comprises a ball screw 202 and a linear slide rail module 206, one end of the ball screw 202 is connected with the stepping motor 201, and the other end of the ball screw 202 is connected with the heating and heat preservation system 31; the linear slide rail module 206 is mounted on the profile frame 101 and is connected to the heating and thermal insulation system 31.
In this embodiment, the linear slide rail modules 206 are symmetrically arranged, the diameter of the slide rail is 50-80 mm, the length is 800-1000 mm, the bearing capacity is 60-80 Kg, and the automatic test requirement for the sample entering and exiting the furnace body is realized through the cooperation of the ball screw 202 and the stepper motor 201.
Example 4
Referring to fig. 5, a schematic structural diagram of a heating and heat-preserving system according to the present embodiment is provided, and the purpose of the heating and heat-preserving system is to meet test requirements such as sample temperature rise, heat preservation, atmosphere and air pressure environment guarantee, and a further scheme of the heating and heat-preserving system 31 is provided in the present embodiment.
The heating and preserving system 31 comprises a furnace 303 and a furnace door 304 positioned below the furnace 303.
Specifically, an alumina insulation layer 302 and a silicon-molybdenum rod 301 penetrating through the alumina insulation layer 302 and mounted on the profile frame 101 are arranged in the hearth 303.
In this embodiment, the maximum working temperature of the furnace 303 is 1600 ℃, the long-term working temperature is 1500 ℃, the size of the furnace 303 is 300-400 x 300-500 mm, the silicon molybdenum rod 301 is arranged on four sides in the furnace chamber of the furnace 303, two layers are arranged on each surface, the uniformity of the temperature field is enhanced, the temperature field uniformity is within the range of 250-300 x 250-300 mm, and the temperature field uniformity is within the range of +/-3-10 ℃.
Specifically, a water vapor generator 306 and a preheating furnace 314 which are communicated with the interior of the hearth 303 are arranged on one side of the hearth 303, a saturated water vapor outlet 305, a peristaltic pump 307, a water inlet 308 and an injection pump 212 are arranged on the water vapor generator 306, an inert gas inlet 309 and a saturated water vapor inlet 310 are arranged on the peristaltic pump 307, and a smoke outlet 312 which penetrates through the hearth 303 and extends out of the profile frame 101 is arranged in the hearth 303.
In this embodiment, the input power 311 is an AC power, the power is 220V 50/60HZ, and the maximum power is 8-12 KW.
The ball screw 202 is connected with the stepping motor 201 through the coupler 213, and the linear slide rail module 206, the stepping motor 201 and the ball screw 202 drive the furnace door 304 to horizontally move together, so that the furnace door 304 can be automatically opened and closed.
The injection pump 212 is connected with the ball screw 202 by the stepping motor 201, when the furnace door 304 is horizontally closed, the injection pump 212 introduces water into the peristaltic pump 307, the saturated steam inlet 310 is connected with the peristaltic pump 307, water is injected into the preheating furnace 314 through the peristaltic pump 307, and the preheating furnace 314 heats the water injected by the peristaltic pump 307 to become saturated steam and then is introduced into the furnace 303.
Example 5
Referring to fig. 6 and 7, a schematic structural diagram of a display control system of the present embodiment is provided, which aims to realize test requirements such as sample temperature rising, heat preservation, atmosphere and air pressure environment guarantee, and a further scheme of the heating and heat preservation system 31 is provided in the present embodiment.
The display control system 41 comprises a PLC monitor display 402 mounted on the profile frame 101 by a robotic arm 405.
Specifically, the PLC monitor display 402 is connected to the electrical box 403, the temperature control device 401, and the oven door transformer 404, respectively.
In this embodiment, the temperature control device 401 includes a temperature control thermocouple 313, an automatic power compensation controller 4001 and a temperature controller 4002, wherein the temperature control thermocouple 313 is a B-type thermocouple, and the temperature control precision is: the automatic power compensation controller 4001 is controlled by PID automatic temperature control program, the temperature rising rate is 5-10 ℃/min, the temperature controller 4002 is 518P type, and the temperature control precision can reach +/-1-5 ℃.
The PLC monitoring display screen 402 controls automatic impact temperature circulation of a test sample, the door plug 205 descends, the furnace door 304 closes, the fan 204 cools the sample in a high temperature state, the cooling time is up, the furnace door 304 opens, the door plug 205 ascends and closes to start heating the sample, the process is a circulation, and the PLC monitoring display screen 402 can be used for setting and monitoring circulation process, circulation times, temperature and heat preservation time in real time.
Example 6
Referring to fig. 9 and 10, a structural schematic diagram of a thermal shock tool according to this embodiment is provided, which aims to fix a sample conveniently, and a further scheme is provided in this embodiment.
A full-automatic thermal shock device for ceramic composite material, which also comprises a thermal shock tool 51,
specifically, the thermal shock tool 51 is a microcrystalline mullite brick 501, and a plurality of fixing holes 502 are formed in the microcrystalline mullite brick 501.
In this embodiment, the microcrystalline mullite brick 501 is a mixture of 3Al2O3-2SiO2 and whiskers, and the fixing hole site 502 for loading the sample in this embodiment is engraved on the preset microcrystalline mullite brick 501 by using an engraving machine, where the fixing hole site 502 can be set according to the sample size, and fig. 9 is a thermal shock tool 51 with a circular hole, and fig. 10 is a thermal shock tool 51 with a square hole.
The fixed hole site of the circular hole is suitable for a bending sample, the aperture is 5-9 mm, the depth is 3-8 mm, the square hole size of the tensile sample tool is 5-11 x 1-3*2-10 mm (width-thickness-depth), the square hole size of the in-plane shearing sample tool is 15-21 x 1-3*5-10 mm (width-thickness-depth), the square hole size of the riveting sample tool is 10-21 x 3-5*5-10 mm (width-thickness-depth), the square hole size of the vortex column sample tool is 10-21 x 5-8*5-10 mm (width-thickness-depth), and the single tool size is 100-115 x 25-30 mm.
Example 7
Referring to fig. 11 and 12, the present embodiment provides a test method using a full-automatic thermal shock apparatus for ceramic composite material, comprising the steps of:
s1: measuring the size of a sample, and opening a fixing hole site 502 for loading the sample on a preset microcrystalline mullite brick 501 by adopting an engraving machine according to the size of the sample;
s2: weighing the sample, loading the sample by adopting a thermal shock tool 51, photographing and recording, and placing the thermal shock tool 51 on a lifting platform 203;
s3: setting a temperature control degree, and starting a hearth heating program through a PLC monitoring display screen 402, wherein the temperature control degree comprises;
setting the temperature of the hearth 303 on a PLC monitoring display screen 402 from room temperature to 200-300 ℃, wherein the temperature rising rate is 7-8 ℃/min, fully preheating the hearth 303, and setting the temperature rising rate to 5-10 ℃/min and the heat preservation time to 10-1000 min according to the actual working time of the same day when the temperature rises from 200-300 ℃ to 1000-1500 ℃;
the temperature reducing program is that when the temperature is reduced to 200-300 ℃ at 1000-1500 ℃, the temperature is reduced according to 5-10 ℃/min;
in this embodiment, referring to fig. 11, on the control page of the PLC monitor display 402, the temperature of the furnace 303 is set to rise from room temperature to 300 ℃, the heating rate is 8 ℃/min, so that the furnace 303 is fully preheated and the service life of the heating element silicon molybdenum rod 301 is effectively prolonged, when the temperature rises to 1200 ℃, the heating rate is set to 10 ℃/min, the heat preservation time is set to 20min according to the actual working time on the same day, the temperature is reduced according to 5 ℃/min when the temperature is reduced to 300 ℃ in the temperature reducing program, so that the program temperature, the real-time temperature and the power change curve along with time can be observed at any time,
s4: setting a preheating and heat-preserving process and the number of impact times of the hearth 303 on the thermal shock of the sample in the hearth 303;
s5: setting an automatic thermal shock cycle of the hearth 303 to the sample in the hearth 303;
s6: and after the test sample is cooled to room temperature by air, taking out the test sample, weighing the test sample, and calculating the weight change of the test sample before and after different times of thermal shock cycles to finish the thermal shock test.
Setting a thermal shock preheating and heat preserving process and the number of impact times in the step S4, specifically comprising the following steps: setting the circulation times according to the working requirements of the day, wherein the circulation times are set to be 2-99999 times, the heat preservation time is 7-10 min, the effective heat preservation time is 3-5 min30s +/-5 s, the rest 1-1 min30s +/-5 s is the heating time caused by the temperature change of the heat circulation switching hearth, and the cooling time is 3-5 min.
In this embodiment, a thermal shock preheating and heat preserving process and the number of impact times are set, specifically: the circulation times are set according to the working requirements of the same day, the circulation time is 50 times a day in the embodiment, the heat preservation time is 10min, wherein the effective heat preservation time is 5min30s plus or minus 5s, the rest 1min30s plus or minus 5s is the heating time caused by the temperature change of a heat circulation switching hearth, and the cooling time is 5min.
In step S5, an automatic impact cycle is set, specifically including: after the temperature is raised to the heat preservation temperature of 1000-1500 ℃ for 1-5 h, the thermal shock circulation process enters an automatic control state;
the state can be divided into a program of opening the door plug 205 and lifting the furnace door 304, starting the heat preservation stage when the furnace door 304 reaches the stroke, a program of descending the furnace door 304 and closing the door plug 205 until the furnace door reaches the heat preservation time, and a program of automatically opening the fan 204 until the sample is cooled.
In this embodiment, an automatic impact cycle is set, specifically: after 2 hours of heating to the heat preservation temperature of 1200 ℃, the thermal shock circulation process enters an automatic control state, wherein the state can be divided into four steps of opening the door plug 205 and lifting the furnace door 304, starting a heat preservation stage program when the furnace door 304 reaches a stroke, lowering the furnace door 304 and closing the furnace door plug 205 until the furnace door returns, automatically opening the fan 204 until the sample is cooled, and meanwhile, the device can be manually controlled, and the whole process of executing a command and completing full-automatic circulation can be also performed.
Although specific embodiments of the invention have been described in detail with reference to the accompanying drawings, it should not be construed as limiting the scope of protection of the present patent. Various modifications and variations which may be made by those skilled in the art without the creative effort are within the scope of the patent described in the claims.
Claims (10)
1. A full-automatic thermal shock device for ceramic composite material, its characterized in that: comprising a support system (11);
the support system (11) comprises a section bar frame (101), a heating and heat-preserving system (31) is arranged in the section bar frame (101), and a lifting system (21) is arranged right below the heating and heat-preserving system (31);
a display control system (41) is arranged on one side of the lifting system (21);
an alloy plate (105) is arranged on the section bar frame (101) at the lifting system (21);
the display control system (41), the heating and heat preserving system (31) and the lifting system (21) are connected with the input power supply (311) through the alloy plate (105).
2. The full-automatic thermal shock device for ceramic composite according to claim 1, wherein: the profile frame (101) comprises a plurality of industrial aluminum alloys, and the industrial aluminum alloys are connected with an L-shaped aluminum alloy fixed angle (103) through fasteners (102) to form the profile frame (101); the bottom of the profile frame (101) is provided with universal wheels (104);
a plurality of heat dissipation circular grooves (106) and wire inlet holes (108) are formed in the alloy plate (105).
3. The full-automatic thermal shock device for ceramic composite according to claim 2, wherein: the lifting system (21) comprises a lifting platform (203), and the lifting platform (203) is arranged on the profile frame (101) through a lifting column (211); a corundum crucible (207) is arranged on the lifting platform (203), and a corundum base plate (208) is arranged on the corundum crucible (207) through a ceramic support column (210);
a silica gel ring (209) is arranged between the lifting platform (203) and the lifting column (211);
the lifting platform (203) is provided with a door plug (205) on the upper surface, and a fan (204) is arranged beside the lifting platform (203).
4. The full-automatic thermal shock device for ceramic composite according to claim 1, wherein: the lifting system (21) further comprises a ball screw (202) and a linear slide rail module (206), one end of the ball screw (202) is connected with the stepping motor (201), and the other end of the ball screw (202) is connected with the heating and heat preserving system (31); the linear slide rail module (206) is arranged on the section bar frame (101) and is connected with the heating and heat preserving system (31).
5. The full-automatic thermal shock device for ceramic composite according to claim 1, wherein: the heating and heat-preserving system (31) comprises a hearth (303) and a furnace door (304) positioned below the hearth (303), wherein an aluminum oxide heat-preserving layer (302) and a silicon-molybdenum rod (301) penetrating through the aluminum oxide heat-preserving layer (302) and installed on the profile frame (101) are arranged in the hearth (303);
one side of the hearth (303) is provided with a steam generator (306) and a preheating furnace (314) which are communicated with the inside of the hearth (303), and the steam generator (306) is provided with a saturated steam outlet (305), a peristaltic pump (307), a water inlet (308) and an injection pump (212);
an inert gas inlet (309) and a saturated steam inlet (310) are arranged on the peristaltic pump (307);
a smoke outlet (312) penetrating through the hearth (303) and extending out of the profile frame (101) is arranged in the hearth (303).
6. The full-automatic thermal shock device for ceramic composite according to claim 1, wherein: the display control system (41) comprises a PLC monitoring display screen (402) which is arranged on the profile frame (101) through a mechanical arm (405), and the PLC monitoring display screen (402) is respectively connected with an electric box (403), a temperature control device (401) and a furnace door transformer (404).
7. The full-automatic thermal shock device for ceramic composite according to claim 1, wherein: the thermal shock tool comprises a thermal shock tool body (51), wherein the thermal shock tool body (51) is a microcrystalline mullite brick (501), and a plurality of fixing hole sites (502) are formed in the microcrystalline mullite brick (501).
8. A test method using the full-automatic thermal shock device for ceramic composite material of claim 7, comprising the steps of:
s1: measuring the size of a sample, and opening a fixing hole site (502) for loading the sample on a preset microcrystalline mullite brick (501) by adopting an engraving machine according to the size of the sample;
s2: weighing a sample, loading the sample by adopting a thermal shock tool (51), photographing and recording, and placing the thermal shock tool (51) on a lifting platform (203);
s3: setting a temperature control degree, and starting a hearth heating program through a PLC monitoring display screen (402), wherein the method comprises the following steps:
setting the temperature of a hearth (303) on a PLC monitoring display screen (402) from room temperature to 200-300 ℃, wherein the temperature rising rate is 7-8 ℃/min, fully preheating the hearth (303), setting the temperature rising rate to 5-10 ℃/min when the temperature rises to 1000-1500 ℃ from 200-300 ℃, and setting the heat preservation time to 10-1000 min according to the actual working time of the day;
the temperature reducing program is that when the temperature is reduced to 200-300 ℃ at 1000-1500 ℃, the temperature is reduced according to 5-10 ℃/min;
s4: setting a thermal shock preheating and heat preserving process and the number of impact times of the hearth (303) on a sample in the hearth (303);
s5: setting automatic thermal shock circulation of the hearth (303) on the sample in the hearth (303);
s6: and after the test sample is cooled to room temperature by air, taking out the test sample, weighing the test sample, and calculating the weight change of the test sample before and after different times of thermal shock cycles to finish the thermal shock test.
9. The method for testing the full-automatic thermal shock device for ceramic composite materials according to claim 8, wherein the step S4 is characterized by comprising the following steps: setting the circulation times according to the working requirements of the day, wherein the circulation times are set to be 2-99999 times, the heat preservation time is 7-10 min, the effective heat preservation time is 3-5 min30s +/-5 s, the rest 1-1 min30s +/-5 s is the heating time caused by the temperature change of the heat circulation switching hearth, and the cooling time is 3-5 min.
10. The method according to claim 8, wherein the step S5 is provided with an automatic impact cycle, and the method specifically comprises: after the temperature is raised to the heat preservation temperature of 1000-1500 ℃ for 1-5 hours, the thermal shock circulation process enters an automatic control state, wherein the state comprises that a door plug (205) is opened, a furnace door (304) is lifted, the furnace door (304) reaches a stroke starting heat preservation stage, the furnace door (304) is lowered and the door plug (205) is closed to fall back, and a fan (204) is automatically opened until a sample is cooled.
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| CN202310492445.5A CN116609218A (en) | 2023-05-04 | 2023-05-04 | Full-automatic thermal shock device for ceramic composite material and test method |
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| CN202310492445.5A CN116609218A (en) | 2023-05-04 | 2023-05-04 | Full-automatic thermal shock device for ceramic composite material and test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118500882A (en) * | 2024-07-19 | 2024-08-16 | 德州瑞百利玻璃砖有限公司 | Hollow glass brick detection device that shocks resistance |
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- 2023-05-04 CN CN202310492445.5A patent/CN116609218A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118500882A (en) * | 2024-07-19 | 2024-08-16 | 德州瑞百利玻璃砖有限公司 | Hollow glass brick detection device that shocks resistance |
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