A high-temperature multi-atmosphere microwave energy grinding device and method thereof

Abstract

A high-temperature multi-atmosphere microwave energy grinding equipment and method belongs to the technical field of high-temperature grinding equipment and methods, and is used to study the wear resistance of dielectric materials. The technical scheme is: microwave sources are respectively arranged on the upper, lower and rear sides of the outer wall of the multi-mode microwave resonance chamber, the power mechanism and the clamping mechanism are respectively installed on the left and right sides of the multi-mode microwave resonance chamber, and a microwave heating rotary grinding device is arranged in the multi-mode microwave resonance chamber. The left side of the microwave heating rotary outer jacket of the microwave heating rotary grinding device is connected to the power mechanism, and the right side is connected to the clamping mechanism. The grinding chamber is located in the microwave heating rotary outer jacket, and the vacuuming mechanism and the ventilation mechanism are respectively connected to the multi-mode microwave resonance chamber, and the furnace door is installed in front of the multi-mode microwave resonance chamber. The present invention can realize the measurement of the wear parameters of dielectric materials under the conditions of electromagnetic waves, high temperature, multi-atmosphere and high-speed rotation, and provides scientific data for the performance research of major engineering materials, which is highly innovative and practical.

Description

Technical Field

[0001] The invention relates to a high-temperature multi-atmosphere microwave energy grinding device and a method thereof, belonging to the technical field of high-temperature grinding devices and methods. Background Art

[0002] The grinding process is a dynamic process, that is, the grinding media in the grinding tank body is worn out by the friction and impact between the grinding media and the inner wall of the grinding tank body caused by the rotation of the grinding tank body. When the equipment rotates, the grinding media can be carried up and then dropped in the direction of rotation due to the friction between the grinding media and the inner wall of the grinding tank body. Under the action of impact and friction, the grinding media will be continuously worn out by friction. The loss of medium material caused by wear is called wear, which can be obtained by measuring the change in mass.

[0003] Microwave heating is the process of heating materials by utilizing the energy characteristics of microwaves. Dielectric materials are usually able to absorb microwave energy to varying degrees. The dielectric materials couple with the microwave electromagnetic field to generate "internal friction heat", which causes the dielectric material itself to lose electric field energy and generate heat. The amount of heat generated by the dielectric material in the microwave field is closely related to the type of dielectric and its dielectric properties.

[0004] During the grinding process, electromagnetic fields, atmosphere, high temperature, high speed and other harsh working conditions are provided, which are close to the service limit of dielectric materials. Dielectric materials often suffer from aggravated wear due to excessive surface contact stress and increased frictional heat generation, thereby reducing the service life of dielectric materials. Therefore, measuring the limit wear of dielectric materials is an important parameter for characterizing the wear performance of materials in aerospace, nuclear power and wind power, biomedical engineering, advanced weapons and nuclear fission reactors.

[0005] Currently, there is no relevant device that applies microwave heating to high-temperature grinding and wear. Therefore, it is very necessary and possible to develop a high-temperature multi-atmosphere microwave energy grinding equipment and method. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a high-temperature multi-atmosphere microwave energy grinding device and a method thereof. The microwave energy grinding device can measure the wear amount of dielectric materials in harsh environments such as adjusting the rotation speed, atmosphere and high temperature in an electromagnetic field.

[0007] The technical solution to solve the above technical problems is:

[0008] A high-temperature multi-atmosphere microwave energy grinding equipment comprises a multi-mode microwave resonance chamber, a microwave source, a microwave heating rotary grinding device, a power mechanism, a clamping mechanism, a vacuum mechanism, a ventilation mechanism, a furnace door, a frame and a shell. The frame is fixed at the lower part of the multi-mode microwave resonance chamber, and the ventilation mechanism, the vacuum mechanism and the power distribution control box are installed in the frame. The multi-mode microwave resonance chamber is a circular double-layer vacuum structure. The outer wall of the multi-mode microwave resonance chamber is provided with microwave sources on the upper side, the lower side and the rear side respectively. The power mechanism and the clamping mechanism are respectively installed on the left and right sides of the multi-mode microwave resonance chamber. The multi-mode microwave resonance chamber is provided with a microwave heating rotary grinding device. The microwave heating rotary grinding device consists of a microwave heating rotary jacket and a grinding chamber. The left side of the microwave heating rotary jacket is connected to the power mechanism, and the right side of the microwave heating rotary jacket is connected to the clamping mechanism. The grinding chamber is located in the microwave heating rotary jacket. The vacuum mechanism and the ventilation mechanism are respectively connected to the multi-mode microwave resonance chamber. The furnace door is installed in front of the multi-mode microwave resonance chamber.

[0009] The above-mentioned high-temperature multi-atmosphere microwave energy grinding equipment, the microwave heating rotating outer jacket of the microwave heating rotating grinding device includes a spline shaft sleeve, a ceramic pin, a ceramic gasket, an annular metal basket, a wave-transmitting heat-insulating material, a wave-absorbing heating sleeve, a circular metal cover and a ceramic bearing, two circular metal covers are respectively connected to the two ends of the annular metal basket with bolts, a spline shaft sleeve is installed in the center of one circular metal cover, the upper end of the spline shaft sleeve is connected to the power part, the bottom of the spline shaft sleeve is connected to the ceramic pin, the ceramic gasket is fastened to the ceramic pin with a ceramic nut, the ceramic gasket is connected to the grinding chamber placed in the microwave heating rotating outer jacket, a T-shaped cross-section circular hole is opened in the center of the other circular metal cover, the lower part of the T-shaped cross-section circular hole is connected to the grinding chamber, the upper end of the T-shaped cross-section circular hole is inlaid with a ceramic bearing, the ceramic bearing is connected to the clamping part, the wave-transmitting heat-insulating material is filled in the gap between the microwave heating rotating outer jacket and the grinding chamber, and the wave-absorbing heating sleeve is sleeved on the outer periphery of the grinding chamber.

[0010] The above-mentioned high-temperature multi-atmosphere microwave energy grinding equipment, the grinding chamber includes a grinding tank body, a sealing cover, a grinding medium and a base clip. The grinding tank body is a cylindrical body, and the tank mouth of the grinding tank body has a reverse thread. The sealing cover is a T-shaped cylinder. The lower end cylinder of the sealing cover has a reverse thread that matches the tank mouth thread of the grinding tank body. A circular hole is opened in the center of the sealing cover, and quartz glass is inlaid in the circular hole. Several small circular holes for vacuuming and venting the atmosphere are also opened around the central circular hole of the sealing cover. A base clip is provided on the bottom outer wall of the grinding tank body, and the base clip is connected to the ceramic gasket in the microwave heating rotating jacket. The grinding medium is placed in the grinding tank body.

[0011] The above-mentioned high-temperature multi-atmosphere microwave energy grinding equipment, the power mechanism includes a variable frequency speed regulating motor, a coupling, a power magnetic fluid sealing device, a support bearing and a spline shaft, the power magnetic fluid sealing device is installed on the left side of the multi-mode microwave resonance chamber, one end of the spline shaft passes through the power magnetic fluid sealing device, the multi-mode microwave resonance chamber and the support bearing and is connected to the spline shaft sleeve of the microwave heating rotating jacket, the other end of the spline shaft is connected to the coupling and the variable frequency speed regulating motor in turn, and the support bearing is fixed in the multi-mode microwave resonance chamber by a stainless steel support frame.

[0012] The above-mentioned high-temperature multi-atmosphere microwave energy grinding equipment, the clamping mechanism includes an electric slide, a clamping magnetic fluid sealing device, a welding bellows, a hollow ejector pin and a sliding bearing. The left and right ends of the welding bellows are respectively connected to the multi-mode microwave resonant cavity and the clamping magnetic fluid sealing device. The clamping magnetic fluid sealing device is fixed on the electric slide. The lower end of the electric slide is fixed to the upper end of the frame. The head of the hollow ejector pin passes through the clamping magnetic fluid sealing device, the welding bellows, the multi-mode microwave resonant cavity and the sliding bearing in turn and is connected to the ceramic bearing of the microwave heating rotating jacket. The tail of the hollow ejector pin is fixed together with the clamping magnetic fluid sealing device. A two-color infrared thermometer for measuring the temperature of the grinding medium is arranged on the right side of the clamping magnetic fluid sealing device.

[0013] The above-mentioned high-temperature multi-atmosphere microwave energy grinding equipment, the vacuum pumping mechanism includes a vacuum pump, a vacuum gauge and a vacuum joint, the vacuum pump is fixed at the lower part of the frame, the vacuum pump's exhaust pipe is welded to the multi-mode microwave resonant cavity, the vacuum gauge and the exhaust valve are installed on the exhaust pipe, and the vacuum bellows of the vacuum pump is connected to the exhaust pipe through the vacuum joint.

[0014] The above-mentioned high-temperature multi-atmosphere microwave energy grinding equipment, the ventilation mechanism includes a gas flow meter, a gas mixing tank, an air inlet valve and an air outlet valve, the gas mixing tank is fixed at the lower part of the frame, the gas flow meter is fixed on the outer wall of the shell, one end of the gas flow meter is connected to the required gas source, and the other end is connected to the gas mixing tank, the gas mixing tank is connected to the multi-mode microwave resonant cavity through an air inlet pipe, the air inlet valve is installed on the air inlet pipe, and the air outlet valve is installed on the exhaust pipe of the multi-mode microwave resonant cavity.

[0015] The above-mentioned high-temperature multi-atmosphere microwave energy grinding equipment, the power distribution control box is respectively connected with the variable frequency speed regulating motor, the vacuum pump, the microwave source, the human-machine interface, the electric slide and the two-color infrared thermometer.

[0016] A grinding method using the high temperature multi-atmosphere microwave energy grinding device is carried out by the following steps:

[0017] Step 1: Turn on the main power of the equipment and check whether all parts and control instruments are normal;

[0018] Step 2: Grinding preparation, weigh the grinding media, pour the weighed grinding media into the grinding jar, cover the sealing cover and tighten it, the weighing accuracy is 0.1mg;

[0019] Step 3: Prepare the microwave heating rotary grinding device, place the wave-transmitting heat-insulating material in the circular metal basket, then place the wave-absorbing heating sleeve in the wave-transmitting heat-insulating material, place the prepared grinding chamber in the wave-absorbing heating sleeve, use alumina ceramic screws to pass through the circular metal basket, the wave-transmitting heat-insulating material and the wave-absorbing heating sleeve in sequence, and press them tightly against the outer wall of the grinding tank body, finally cover the wave-transmitting heat-insulating material cover and the circular metal cover, and tighten the circular metal basket and the circular metal cover;

[0020] Step 4: Install and fix the microwave heating rotary grinding device, open the furnace door, observe the position of the hollow ejector head, make the hollow ejector slide in the sliding bearing, and then send the microwave heating rotary grinding device into the multi-mode microwave resonance chamber, connect the spline shaft sleeve of the microwave heating rotary jacket with the spline shaft of the power mechanism, and insert the head of the hollow ejector into the ceramic bearing of the microwave heating rotary jacket, so that the spline shaft sleeves and ceramic bearings at the left and right ends of the microwave heating rotary jacket are respectively connected and fixed with the spline shaft of the power mechanism and the hollow ejector of the clamping mechanism;

[0021] Step 5: Adjust the two-color infrared thermometer so that the infrared rays of the two-color infrared thermometer pass through the hollow ejector pin, the round metal cover, the wave-transmitting insulation material cover and the central circular hole of the sealing cover in turn, so that the center of the infrared dot falls on the target to be measured as much as possible, then fix the two-color infrared thermometer and close the furnace door;

[0022] Step 6: Evacuate and ventilate the atmosphere, close the inlet valve and outlet valve in turn, stop the vacuum pump, connect the required gas source to the reserved interface of the gas flow meter, open the gas source ball valve and adjust the gas flow meter parameters at the same time, wait for the required gas source to enter the mixing tank for mixing, then open the inlet valve, pass the gas source, observe the vacuum gauge, when the gauge pressure is slightly greater than one atmosphere, open the outlet valve to ensure smooth airflow;

[0023] Step 7: Parameter setting: set the time, temperature, speed, microwave output power and other parameters on the human-machine interface. After the parameters are set, click the start button of the device and the device starts working.

[0024] Step 8: After the experiment is over, the equipment runs to the set end time, the variable frequency speed regulating motor and microwave source are automatically powered off and stop working, the temperature drops to below 50°C, and the gas source ball valve, air inlet valve and air outlet valve are closed in turn;

[0025] Step 9: Take out the microwave heating rotary grinding device, open the furnace door, separate the hollow ejector head from the ceramic bearing of the microwave heating rotary jacket, loosen the connection between the spline shaft sleeve at the bottom of the microwave heating rotary jacket and the spline shaft of the power mechanism, and then take out the microwave heating rotary grinding device from the multi-mode microwave resonance chamber;

[0026] Step 10: Take out the grinding chamber. First, unscrew the fastening screws and the fastening nuts of the circular metal upper cover of the microwave heating rotating jacket, then remove the circular metal upper cover and the wave-transmitting heat-insulating material upper cover in turn, and finally take out the grinding chamber;

[0027] Step 11: Take out the grinding medium, unscrew the sealing cover of the grinding jar, pour the grinding medium into the clean container prepared in advance, clean the grinding jar and the sealing cover in preparation for the next experiment;

[0028] Step 12: Clean and weigh the grinding medium. Pour the grinding medium in the container into the cleaning tank of an ultrasonic cleaning machine, use an organic solvent as a cleaning agent to wash the grinding powder, wash it multiple times, dry the cleaned grinding medium, and place the dried grinding medium (39) in an analytical balance for weighing. The weighing accuracy is 0.1 mg.

[0029] Step 13: Data collection, data analysis and calculation of the wear of the grinding media.

[0030] In the above-mentioned high-temperature multi-atmosphere microwave energy grinding method, the microwave generation frequency of the microwave source is 2450MHz, the microwave output power is 300W~4275W, the maximum operating temperature of the high-temperature multi-atmosphere microwave energy grinding equipment is 1200℃, and the speed of the variable frequency speed regulating motor is 30~150r / min.

[0031] The beneficial effects of the present invention are:

[0032] The present invention adopts a variable frequency speed regulating motor as a rotating power, microwaves as a heating source, polycrystalline mullite fiber materials or alumina fiber materials as wave-transmitting heat-insulating materials, and a wave-absorbing sleeve as a heating element. The microwaves can directly or indirectly heat the grinding medium material, and at the same time, the grinding medium is subjected to high-temperature oxidation protection, oxidation, and corrosion reactions by means of inflation or exhaust. The microwave input power is continuously adjustable, and the heating temperature, atmosphere, rotation speed, and pressure are controllable. The temperature measurement and temperature control by a two-color infrared thermometer with strong environmental and electromagnetic interference resistance can be realized, and the wear parameters of the medium material can be measured under harsh working environment conditions approaching the limit such as electromagnetic waves, rotation speed, atmosphere, and high temperature.

[0033] This invention is the first to test the wear of dielectric materials in a microwave, high-temperature, multi-atmosphere environment. It measures the wear parameters of dielectric materials under the conditions of electromagnetic waves, high temperature, multi-atmosphere, and high-speed rotation. It is a major breakthrough in mastering the wear test technology of dielectric materials under extreme conditions of microwave fields. It provides scientific data for the service performance research of major engineering materials (materials in the fields of aerospace, nuclear power, wind power, advanced weapons, and nuclear fission reactors), which is highly innovative and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a front view of the high temperature multi-atmosphere microwave energy grinding device of the present invention;

[0035] Figure 2 yes Figure 1 Side view of

[0036] Figure 3 yes Figure 1 A top view of

[0037] Figure 4 It is a schematic diagram of the structure of a microwave heating rotary grinding device;

[0038] Figure 5 is a schematic diagram of the structure of a microwave heating rotating jacket;

[0039] Figure 6 It is a schematic diagram of the structure of the grinding chamber.

[0040] The markings in the figure are as follows: vacuum pump 1, vacuum joint 2, frame 3, variable frequency speed regulating motor 4, coupling 5, spline shaft 6, power magnetic fluid sealing device 7, shell 8, human-machine interface 9, multi-mode microwave resonant chamber 10, furnace door 11, microwave source 12, welding bellows 13, clamping magnetic fluid sealing device 14, hollow ejector 15, two-color infrared thermometer 16, electric slide 17, intake valve 18, gas flow meter 19, power distribution control box 20, gas mixing Tank 21, air outlet valve 22, vacuum gauge 23, microwave heating rotary grinding device 24, sliding bearing 25, support bearing 26, microwave heating rotary jacket 27, grinding chamber 28, spline shaft sleeve 29, ceramic pin 30, ceramic gasket 31, annular metal basket 32, wave-transmitting heat-insulating material 33, wave-absorbing heating sleeve 34, circular metal upper cover 35, ceramic bearing 36, base clamping strip 37, grinding tank body 38, grinding medium 39, sealing cover 40. DETAILED DESCRIPTION

[0041] Figure 1 , 2 3 shows that the high-temperature multi-atmosphere microwave energy grinding equipment of the present invention is composed of a multi-mode microwave resonant chamber 10, a microwave source 12, a microwave heating rotary grinding device 24, a power mechanism, a clamping mechanism, a vacuum mechanism, a ventilation mechanism, a furnace door 11, a frame 3, and a shell 8.

[0042] The frame 3 is fixed at the lower part of the multimode microwave resonance chamber 10. A ventilation mechanism, a vacuum mechanism and a power distribution control box 20 are installed in the frame 3. The multimode microwave resonance chamber 10 is a circular double-layer vacuum structure. A microwave source 12 is respectively arranged on the upper, lower and rear sides of the outer wall of the multimode microwave resonance chamber 10. The power mechanism and the clamping mechanism are respectively arranged on the left and right sides of the multimode microwave resonance chamber 10. A microwave heating rotary grinding device 24 is arranged in the multimode microwave resonance chamber 10. The microwave heating rotary grinding device 24 is composed of a microwave heating rotary jacket 27 and a grinding chamber 28. The left side of the microwave heating rotary jacket 27 is connected to the power mechanism, the right side of the microwave heating rotary jacket 27 is connected to the clamping mechanism, and the grinding chamber 28 is located in the microwave heating rotary jacket 27. The vacuum mechanism and the ventilation mechanism are respectively connected to the multimode microwave resonance chamber 10, and the furnace door 11 is installed in front of the multimode microwave resonance chamber 10. A two-color infrared thermometer 16 for measuring the temperature of the grinding medium is arranged on the right side of the clamping mechanism.

[0043] Figure 3 , 4 5 shows that the microwave heating rotating outer jacket 27 of the microwave heating rotating grinding device 24 includes a spline shaft sleeve 29, a ceramic pin 30 and a ceramic gasket 31, an annular metal basket 32, a wave-transmitting heat-insulating material 33, a wave-absorbing heating sleeve 34, a circular metal upper cover 35 and a ceramic bearing 36.

[0044] Two circular metal covers 35 are bolted to the two ends of the circular metal basket 32, respectively. A spline sleeve 29 is installed at the center of one circular metal cover 35. The upper end of the spline sleeve 29 is connected to the power part. The bottom of the spline sleeve 29 is connected to the ceramic pin 30. The ceramic gasket 31 is fastened to the ceramic pin 30 with a ceramic nut. The ceramic gasket 31 is connected to the grinding chamber 28 placed in the microwave heating rotating jacket 27. A T-shaped cross-section circular hole is opened at the center of the other circular metal cover 35. The lower diameter of the T-shaped cross-section circular hole is φ6mm. The lower part of the T-shaped cross-section circular hole is connected to the grinding chamber 28. The upper end of the T-shaped cross-section circular hole is inlaid with a ceramic bearing 36, and the ceramic bearing 36 is connected to the clamping part. The wave-transmitting heat-insulating material 33 is filled in the gap between the microwave heating rotating jacket 27 and the grinding chamber 28, and the wave-absorbing heating sleeve 34 is sleeved on the outer periphery of the grinding chamber 28. The wave-transmitting heat-insulating material 33 is a wave-transmitting, breathable and heat-insulating polycrystalline mullite fiber material or alumina fiber material product, and the wave-absorbing and heating sleeve 34 is a high-temperature ceramic product composed of 50% SiC, 40% MoSi2 and 10% ZrB2.

[0045] Figure 3 , 4 6 shows that the grinding chamber 28 includes a grinding jar body 38, a sealing cover 40, grinding media 39 and a base clip 37.

[0046] The grinding tank body 38 is a cylindrical high-temperature product of aluminum oxide, zirconium oxide or silicon nitride. The tank mouth of the grinding tank body 38 has a reverse thread. The sealing cover 40 is a T-shaped cylindrical high-temperature product of aluminum oxide, zirconium oxide or silicon nitride. The sealing cover 40 also has a reverse thread. A circular hole with a diameter of φ6mm is opened in the center of the sealing cover 40. Quartz glass with a size of φ6mm×5mm is inlaid in the circular hole. Several small circular holes with a diameter of φ1mm are also opened around the central circular hole of the sealing cover 40 for vacuuming and ventilating the atmosphere. The grinding tank body 38 and the sealing cover 40 are fastened with a threaded structure. A base clip 37 is provided at the bottom of the grinding tank body 38. The base clip 37 is connected to the ceramic gasket 31 in the microwave heating rotating jacket 27, and the grinding medium 39 is placed in the grinding tank body 38.

[0047] Grinding media 39 materials are mainly major engineering materials (materials in engineering fields such as aerospace, nuclear power and wind power, advanced weapons and nuclear fission reactors), with a spherical or cylindrical shape. The spherical size is φ2mm~φ5mm, the cylindrical size is φ2mm~φ5mm in diameter, and the length is 2mm~10mm.

[0048] Figure 1 , 3 As shown, the power mechanism includes a variable frequency speed regulating motor 4, a coupling 5, a spline shaft 6, a power magnetic fluid sealing device 7 and a support bearing 26.

[0049] The power magnetic fluid sealing device 7 is installed on the left side of the multi-mode microwave resonance chamber 10. One end of the spline shaft 6 passes through the power magnetic fluid sealing device 7, the multi-mode microwave resonance chamber 10 and the support bearing 26 and is connected to the spline shaft sleeve 29 of the microwave heating rotating jacket 27. The other end of the spline shaft 6 is connected to the coupling 5 and the variable frequency speed regulating motor 4 in turn. The support bearing 26 is fixed in the multi-mode microwave resonance chamber 10 by a stainless steel support frame. The speed setting range of the variable frequency speed regulating motor 4 is 30~300r / min.

[0050] Figure 1 , 3 As shown, the clamping mechanism includes a hollow ejector pin 15 , a sliding bearing 25 , a welding bellows 13 , a clamping magnetic fluid sealing device 14 and an electric slide 17 .

[0051] The left and right ends of the welding bellows 13 are connected to the multimode microwave resonant chamber 10 and the clamping magnetic fluid sealing device 14 respectively. The clamping magnetic fluid sealing device 14 is fixed on the electric slide 17. The lower end of the electric slide 17 is fixed to the upper end of the frame 3. The head of the hollow ejector 15 passes through the clamping magnetic fluid sealing device 14, the welding bellows 13, the multimode microwave resonant chamber 10 and the sliding bearing 25 in turn and is connected to the ceramic bearing 36 of the microwave heating rotating jacket 27. The tail of the hollow ejector 15 is fixed to the clamping magnetic fluid sealing device 14. A two-color infrared thermometer 16 for measuring the temperature of the grinding medium is arranged on the right side of the clamping magnetic fluid sealing device 14. The inner hole size of the hollow ejector 15 is φ6mm in diameter, and the tail of the hollow ejector 15 is encapsulated with quartz glass of size φ6mm×5mm.

[0052] Figure 1 , 2 It is shown that the vacuum pumping mechanism includes a vacuum pump 1, a vacuum gauge 23 and a vacuum joint 2. The vacuum pump 1 is fixed to the lower part of the frame 3, the vacuum pipe of the vacuum pump 1 is welded to the multimode microwave resonant chamber 10, the vacuum gauge 23 and the air outlet valve 22 are installed on the vacuum pipe, and the vacuum bellows of the vacuum pump 1 is connected to the vacuum pipe through the vacuum joint 2.

[0053] Figure 1 , 2 It is shown that the ventilation mechanism includes a gas flow meter 19, a gas mixing tank 21, an air inlet valve 18 and an air outlet valve 22. The gas mixing tank 21 is fixed to the lower part of the frame 3, the gas flow meter 19 is fixed to the outer wall of the shell 8, one end of the gas flow meter 19 is connected to the required gas source, and the other end is connected to the gas mixing tank 21, the gas mixing tank 21 is connected to the multi-mode microwave resonant chamber 10 through the air inlet pipe, the air inlet valve 18 is installed on the air inlet pipe, and the air outlet valve 22 is set on the exhaust pipe connected to the multi-mode microwave resonant chamber 10.

[0054] Figure 1 , 2 It is shown that the power distribution control box 20 is respectively connected to the variable frequency speed regulating motor 4, the vacuum pump 1, the microwave source 12, the human-machine interface 9, the electric slide 17 and the two-color infrared thermometer 16.

[0055] The high temperature multi-atmosphere microwave energy grinding method of the present invention is carried out by the following steps:

[0056] Step 1: Turn on the main power of the equipment and check whether all parts and control instruments are normal;

[0057] Step 2: Prepare the grinding system, weigh the grinding medium 39, pour the weighed grinding medium 39 into the grinding tank 38, cover the sealing cover 40 and tighten it, and the weighing accuracy is 0.1 mg;

[0058] Step 3: Prepare the microwave heating rotary grinding device 24 and fix the grinding chamber 28 in the microwave heating rotary jacket 27, as follows: first, place the wave-transmitting heat-insulating material 33 in the circular metal basket 32 ​​along the inner wall of the circular metal basket 32, make the ceramic pin 30 at the bottom of the microwave heating rotary jacket 27 pass through the bottom of the wave-transmitting heat-insulating material 33, put the ceramic gasket 31 with the slot on the ceramic pin 30 and press the wave-transmitting heat-insulating material 33, tighten the ceramic gasket 31 with a ceramic nut, then put the wave-absorbing heat-generating sleeve 34 into the wave-transmitting heat-insulating material 33, and then place the prepared grinding chamber 28 in the wave-absorbing heat-generating sleeve 34. , and make the base clamping strip 37 of the grinding chamber 28 tightly clamped in the ceramic gasket clamping groove of the microwave heating rotating jacket 27. To prevent the grinding chamber 28 from deflecting or shaking due to the centrifugal force during the rotation process, 8 alumina ceramic fastening screws are symmetrically screwed into the waist position of the annular metal basket 32 ​​around, and the grinding chamber 28 is tightened again. The alumina ceramic screws pass through the annular metal basket 32, the wave-transmitting heat-insulating material 33 and the wave-absorbing heating sleeve 34 in sequence and are tightly pressed against the outer wall of the grinding tank body 38. Finally, the wave-transmitting heat-insulating material cover and the circular metal cover 35 are covered, and the annular metal basket 32 ​​and the circular metal cover 35 are fastened with nuts;

[0059] Step 4: Install and fix the microwave heating rotary grinding device 24, open the furnace door 11, observe the position of the hollow ejector head, click the electric slide outward movement button on the human-machine interface 9, and the electric slide 17 drives the clamping magnetic fluid sealing device 14 fixed to the tail of the hollow ejector, stretches the welding bellows 13, and makes the hollow ejector 15 slide on the sliding bearing 25. At the same time, the hollow ejector head also moves outward, and the electric slide 17 automatically stops at the limit switch position, and then the microwave heating rotary grinding device 24 is sent into the multi-mode microwave resonance chamber 10, so that the spline shaft sleeve 29 of the microwave heating rotary jacket 27 is aligned with the spline shaft 6 of the power mechanism. The ends are aligned and connected, and the electric slide moves inward on the human-machine interface 9. The electric slide 17 drives the clamping magnetic fluid sealing device 14 fixed to the tail of the hollow ejector pin, compresses the welding bellows 13, and makes the hollow ejector pin 15 slide on the sliding bearing 25. At the same time, the head of the hollow ejector pin also moves inward, so that the head of the hollow ejector pin is inserted into the ceramic bearing 36 of the microwave heating rotating jacket 27, and stops automatically at the limit switch position of the electric slide, thereby causing the spline shaft sleeves 29 and the ceramic bearings 36 at the left and right ends of the microwave heating rotating jacket 27 to be connected and fixed to the spline shaft 6 of the power mechanism and the hollow ejector pin 15 of the clamping mechanism respectively;

[0060] Step 5: Adjust the two-color infrared thermometer 16, click the temperature measurement button on the human-machine interface 9, adjust the position and angle of the two-color infrared thermometer 16, make the infrared light of the two-color infrared thermometer 16 pass through the central circular hole of the hollow ejector pin 15, the circular metal upper cover 35, the wave-transmitting heat-insulating material upper cover and the sealing cover 40 in sequence, observe the target to be measured through the eyepiece, make the center of the infrared dot fall on the target to be measured as much as possible, then fix the two-color infrared thermometer 16, and close the furnace door 11;

[0061] Step 6: Evacuate and ventilate the atmosphere, close the air inlet valve 18 and the air outlet valve 22 in turn, click the vacuum pump start button on the human-machine interface 9, the vacuum pump 1 starts to evacuate, observe the vacuum gauge reading, and when the vacuum degree is lower than 10Pa, click the vacuum pump off button on the human-machine interface 9, the vacuum pump 1 stops working, connect the required gas source to the reserved interface of the gas flow meter 19, open the gas source ball valve and adjust the parameters of the gas flow meter 19 at the same time, wait for the required gas source to enter the mixing tank 21 for mixing, then open the air inlet valve 18, pass the gas source, observe the vacuum gauge 23, and when the gauge pressure is slightly greater than one atmosphere, open the air outlet valve 22 to ensure smooth airflow;

[0062] Step 7: Parameter setting: set the time, temperature, speed, microwave output power and other parameters on the human-machine interface 9. After the parameters are set, click the device start button and the device starts working.

[0063] Step 8: After the experiment is over, the equipment runs to the set end time, the variable frequency speed regulating motor 4 and the microwave source 12 are automatically powered off and stop working, the temperature drops to below 50°C, and the gas source ball valve, the air inlet valve 18 and the air outlet valve 22 are closed in sequence;

[0064] Step 9: Take out the microwave heating rotary grinding device 24, open the furnace door 11, hold the microwave heating rotary grinding device 24, click the electric slide outward movement button on the human-machine interface 9, the electric slide 17 drives the clamping magnetic fluid sealing device 14 fixed to the tail of the hollow ejector pin, stretches the welding bellows 13, and makes the hollow ejector pin 15 slide on the sliding bearing 25, and at the same time, the head of the hollow ejector pin also moves outward, so that the head of the hollow ejector pin is separated from the ceramic bearing 36 of the microwave heating rotary jacket 27, and the electric slide 17 automatically stops at the limit switch position, and then releases the connection between the spline shaft sleeve 29 at the bottom of the microwave heating rotary jacket 27 and the spline shaft 6 of the power mechanism, and then takes out the microwave heating rotary grinding device 24 from the multi-mode microwave resonance chamber 10;

[0065] Step 10: Take out the grinding chamber 28, first unscrew the 8 alumina ceramic fastening screws and the fastening nuts of the circular metal upper cover 35 of the microwave heating rotating jacket 27, then remove the circular metal upper cover 35 and the wave-transmitting heat-insulating material upper cover in turn, and finally take out the grinding chamber 28;

[0066] Step 11: Take out the grinding medium 39, unscrew the sealing cover 40 of the grinding tank body 38, pour the grinding medium 39 into a clean container prepared in advance, clean the grinding tank body 38 and the sealing cover 40 in preparation for the next experiment;

[0067] Step 12: Clean and weigh the grinding medium 39. Pour the grinding medium 39 in the container into the cleaning tank of an ultrasonic cleaning machine, use an organic solvent as a cleaning agent to wash the grinding powder, wash it several times, dry the washed grinding medium 39, and place the dried grinding medium 39 in an analytical balance for weighing. The weighing accuracy is 0.1 mg.

[0068] Step 13: Data collection, data analysis and calculation of the wear amount of the grinding medium 39.

[0069] In the above-mentioned high-temperature multi-atmosphere microwave energy grinding process, the microwave generation frequency of the microwave source 12 is 2450MHz, the microwave output power is 300W~4275W, the maximum operating temperature of the high-temperature multi-atmosphere microwave energy grinding equipment is 1200℃, and the speed of the variable frequency speed regulating motor 4 is 30~150r / min.

[0070] An embodiment of the warm multi-atmosphere microwave energy grinding equipment of the present invention is as follows:

[0071] The model of vacuum pump 1 is a rotary vane vacuum pump TRP-12;

[0072] The length of rack 3 is 1100 mm, the width is 700 mm, and the height is 600 mm;

[0073] The length of the housing 8 is 1400 mm, the width is 930 mm, and the height is 1500 mm;

[0074] The outer diameter of the multimode microwave resonant chamber 10 is 440 mm and the length is 540 mm;

[0075] The diameter of the welded bellows 13 is φ114mmXφ98mm, the length is 118mm, and the stroke is 70mm;

[0076] The outer diameter of the hollow ejector pin 15 is φ30 mm, the wall thickness is 12 mm, and the length is 345 mm;

[0077] The microwave heating rotary grinding device 24 has an outer diameter of φ300 mm, a wall thickness of 10 mm, and a length of 270 mm;

[0078] The wave-transmitting heat-insulating material 33 has an outer diameter of φ280 mm, a wall thickness of 40 mm, and a length of 190 mm;

[0079] The outer diameter of the microwave absorbing and heating sleeve 34 is φ200 mm, the wall thickness is 5 mm, and the length is 110 mm;

[0080] The grinding chamber 28 has an outer diameter of φ180 mm, a wall thickness of 8 mm, and a length of 145 mm;

[0081] The model of the variable frequency speed regulating motor 4 is YVF2-802-4;

[0082] The model of the power magnetic fluid sealing device 7 and the clamping magnetic fluid sealing device 14 is SR016;

[0083] The model of human-machine interface 9 is Kunlun Tongtai TPC7062TX;

[0084] The model of the two-color infrared thermometer 16 is German Saiteng MQ22MB13;

[0085] The models of the inlet valve 18 and the outlet valve 22 are Ningbo Keshengli NV-02M-02F-PT and NV-02F-02M-PT;

[0086] The model of the gas flow meter 19 is OMEGA FLD2001;

[0087] The model of vacuum gauge 23 is YN-63, -0.1MPa~0.06MPa.

[0088] An embodiment of the high temperature multi-atmosphere microwave energy grinding method of the present invention is carried out by the following steps:

[0089] Step 1: Turn on the main power of the equipment and check whether all parts and control instruments are normal;

[0090] Step 2: The medium material 39 to be tested is a zirconia ceramic ball, and the material size is φ2mm;

[0091] Step 3: Use the Prism ES420A analytical balance with a reading accuracy of 0.1 mg;

[0092] Step 4: The material of the corundum grinding tank body 38 and the sealing cover 40 is aluminum oxide corundum. Check whether the threads of the grinding tank body 38 and the sealing cover 40 are complete and can be tightly tightened;

[0093] Step 5: Pour the weighed medium material 39 into the grinding jar 38, cover it with the sealing cover 40 and tighten it;

[0094] Step 6: Place the cylindrical wave-transmitting heat-insulating material 33 in the annular metal basket 32, and allow the ceramic pin 30 at the bottom of the microwave heating rotating jacket 27 to pass through the bottom of the wave-transmitting heat-insulating material 33. Put the ceramic gasket 31 with the slot on the ceramic pin 30 and press the wave-transmitting heat-insulating material 33, and tighten the ceramic gasket 31 with a ceramic nut;

[0095] Step 7: Place the wave-absorbing and heating sleeve 34 into the wave-transmitting and heat-insulating material 33;

[0096] Step 8: Place the prepared step 5 in the microwave absorbing and heating sleeve 34, so that the base clamping strip 37 of the grinding chamber 28 is tightly clamped in the ceramic gasket clamping groove of the microwave heating rotating jacket 27, and then use 8 alumina ceramic screws to screw through the circular metal basket 32, the wave-transmitting heat-insulating material 33 and the microwave absorbing and heating sleeve 34 from the outside to the inside around the waist of the circular metal basket 32 ​​to tightly support the outer wall of the grinding tank body 38, tighten the grinding chamber 28 again, and finally cover the wave-transmitting heat-insulating material cover and the circular metal cover 35, and tighten the circular metal basket 32 ​​and the circular metal cover 35 with nuts. At this point, the microwave heating rotating grinding device 24 is ready;

[0097] Step 9: Open the furnace door 11, observe the position of the hollow ejector head in the multi-mode microwave resonant chamber 10, click the electric slide outward movement button on the human-machine interface 9, and the electric slide 17 drives the clamping magnetic fluid sealing device 14 fixed to the tail of the hollow ejector, and the clamping magnetic fluid sealing device 14 stretches the welding bellows 13, so that the hollow ejector 15 slides outward on the sliding bearing 25, and the electric slide 17 automatically stops at the outer limit switch position;

[0098] Step 10: Then, the prepared microwave heating rotary grinding device 24 is put into the multi-mode microwave resonance chamber 10, and the ends are leveled and aligned, so that the spline shaft sleeve 29 of the microwave heating rotary outer jacket 27 is connected to the spline shaft 6 of the power mechanism;

[0099] Step 11: Click the button for moving the electric slide inward on the human-machine interface 9, and the electric slide 17 drives the clamping magnetic fluid sealing device 14 fixed to the tail of the hollow ejector pin, and the clamping magnetic fluid sealing device 14 compresses the welding bellows 13, so that the hollow ejector pin 15 slides inward on the sliding bearing 25, and the head of the hollow ejector pin is inserted into the ceramic bearing 36 of the microwave heating rotating jacket 27, and stops automatically at the limit switch position in the electric slide, so that the spline shaft sleeves 39 and the ceramic bearings 36 at the left and right ends of the microwave heating rotating jacket 27 are respectively connected and fixed to the spline shaft 6 of the power mechanism and the hollow ejector pin 15 of the clamping mechanism;

[0100] Step 12: Adjust the two-color infrared thermometer 16, click the temperature measurement button on the human-machine interface 9, adjust the position and angle of the two-color infrared thermometer 16, make the infrared light of the two-color infrared thermometer 16 pass through the central circular hole of the hollow ejector pin 15, the circular metal upper cover 35, the wave-transmitting heat-insulating material upper cover and the sealing cover 40 in sequence, observe the target to be measured through the eyepiece, make the center of the infrared dot fall on the target to be measured as much as possible, then fix the two-color infrared thermometer 16, and close the furnace door 11;

[0101] Step 13: Vacuuming, close the air inlet valve 18 and the air outlet valve 22 in sequence, click the vacuum pump start button on the human-machine interface 9, and the vacuum pump 1 starts to vacuumize. Observe the vacuum gauge reading. When the vacuum degree is lower than 10Pa, click the vacuum pump off button on the human-machine interface 9, and the vacuum pump 1 stops working;

[0102] Step 14: Ventilate the atmosphere. Connect the required N2 gas cylinder and SO2 gas cylinder to the reserved interfaces of the gas flow meter respectively. Open the ball valves of the N2 gas cylinder and the SO2 gas cylinder respectively to pass the gas while adjusting the gas flow meter parameters. The N2 flow rate is 0.5 L / min and the SO2 flow rate is 0.3 L / min. After the required N2 and SO2 enter the mixing tank 21 and mix, open the air inlet valve 18 to pass the N2 and SO2 mixed gas, observe the vacuum gauge 23, and when the gauge pressure is slightly greater than one atmosphere, open the air outlet valve 22 to ensure smooth airflow;

[0103] Step 15: Parameter setting: set the temperature, time, speed, microwave output power and other parameters on the human-machine interface 9. The temperature is 1200°C, the heating time is 1h, the holding time is 72h, the speed is 80r / min, and the microwave output power is 4275W.

[0104] Step 16: After the parameters are set, click the start button on the human-machine interface device and the device starts working;

[0105] Step 17: After the equipment runs to the set end time, the variable frequency speed regulating motor 4 and the microwave source 12 are automatically powered off and stop working. When the temperature in the grinding chamber 28 drops below 50°C, the ball valves of the N2 gas cylinder and the SO2 gas cylinder, the air inlet valve 18 and the air outlet valve 22 are closed in sequence;

[0106] Step 18: Open the furnace door 11, hold the microwave heating rotary grinding device 24 installed in the multi-mode microwave resonance chamber 10, click the electric slide outward movement button on the human-machine interface 9, and the electric slide 17 drives the clamping magnetic fluid sealing device 14 fixed to the tail of the hollow ejector pin, and the clamping magnetic fluid sealing device 14 stretches the welding bellows 13, so that the hollow ejector pin 15 slides outward on the sliding bearing 25, and the head of the hollow ejector pin is separated from the ceramic bearing 36 of the microwave heating rotary jacket 27. The electric slide 17 automatically stops at the outer limit switch position, and then releases the connection between the spline shaft sleeve 29 at the bottom of the microwave heating rotary jacket 27 and the spline shaft 6 of the power mechanism, and then takes the microwave heating rotary grinding device 24 out of the multi-mode microwave resonance chamber 10;

[0107] Step 19: successively unscrew the fastening nut of the circular metal cover 35 of the microwave heating rotating jacket 27 and the 8 alumina ceramic fastening screws screwed around the waist of the annular metal basket 32, remove the circular metal cover 35 and the wave-transmitting heat-insulating material cover, and finally take out the grinding chamber 28;

[0108] Step 20: Unscrew the sealing cover 40 of the grinding tank body 38, pour the dielectric material 39 into a clean stainless steel tray prepared in advance, and then pour the dielectric material 39 in the stainless steel tray into the cleaning tank of an ultrasonic cleaning machine, use an organic solvent as a cleaning agent to wash the grinding powder, and wash it multiple times;

[0109] Step 21: Put the microwave heating rotating jacket 27, the alumina ceramic fastening screws, the grinding tank body 38 and the sealing cover 40 in order for use;

[0110] Step 22: Dry the washed dielectric material 39 in a vacuum drying oven for 8 hours, with the temperature set at 80° C. and the vacuum degree at -0.1 MPa;

[0111] Step 23: Place the dried medium material 39 into an analytical balance model ES420A with a reading accuracy of 0.1 mg.

[0112] Step 24: Data collection, data analysis and calculation of the wear amount of the grinding medium 39.

Claims

1. A high temperature multi-atmosphere microwave energy grinding equipment, characterized in that: The invention comprises a multimode microwave resonant chamber (10), a microwave source (12), a microwave heating rotary grinding device (24), a power mechanism, a clamping mechanism, a vacuuming mechanism, a ventilation mechanism, a furnace door (11), a frame (3), and a shell (8). The frame (3) is fixed to the lower part of the multimode microwave resonant chamber (10). The ventilation mechanism, the vacuuming mechanism, and a power distribution control box are installed in the frame (3). The multimode microwave resonant chamber (10) is a circular double-layer vacuum structure. The outer wall of the multimode microwave resonant chamber (10) is provided with a microwave source (12) on the upper side, the lower side, and the rear side respectively. The power mechanism and the clamping mechanism are respectively installed on the multimode microwave. On the left and right sides of the resonant chamber (10), a microwave heating rotary grinding device (24) is provided in the multimode microwave resonant chamber (10), the microwave heating rotary grinding device (24) being composed of a microwave heating rotary jacket (27) and a grinding chamber (28), the left side of the microwave heating rotary jacket (27) being connected to a power mechanism, the right side of the microwave heating rotary jacket (27) being connected to a clamping mechanism, the grinding chamber (28) being located in the microwave heating rotary jacket (27), the vacuuming mechanism and the ventilation mechanism being respectively connected to the multimode microwave resonant chamber (10), and the furnace door (11) being installed in front of the multimode microwave resonant chamber (10); The microwave heating rotary outer jacket (27) of the microwave heating rotary grinding device (24) comprises a spline shaft sleeve (29), a ceramic pin (30), a ceramic gasket (31), an annular metal basket (32), a wave-transmitting heat-insulating material (33), a wave-absorbing heating sleeve (34), a circular metal upper cover (35) and a ceramic bearing (36). The two circular metal upper covers (35) are respectively connected to the two ends of the annular metal basket (32) by bolts. The spline shaft sleeve (29) is installed at the center of one of the circular metal upper covers (35). The upper end of the spline shaft sleeve (29) is connected to the power part, and the bottom of the spline shaft sleeve (29) is connected to the ceramic pin (30). The ceramic gasket (31) is fastened to the ceramic pin (30) with a ceramic nut, the ceramic gasket (31) is connected to the grinding chamber (28) placed in the microwave heating rotating jacket (27), a T-shaped cross-section circular hole is opened at the center of another circular metal upper cover (35), the lower part of the T-shaped cross-section circular hole is connected to the grinding chamber (28), the upper end of the T-shaped cross-section circular hole is inlaid with a ceramic bearing (36), and the ceramic bearing (36) is connected to the clamping part, the wave-transmitting heat-insulating material (33) is filled in the gap between the microwave heating rotating jacket (27) and the grinding chamber (28), and the wave-absorbing heat-generating sleeve (34) is sleeved on the outer periphery of the grinding chamber (28); The power mechanism comprises a variable frequency speed regulating motor (4), a coupling (5), a power magnetic fluid sealing device (7), a support bearing (26) and a spline shaft (6); the power magnetic fluid sealing device (7) is installed on the left side of the multi-mode microwave resonance chamber (10); one end of the spline shaft (6) passes through the power magnetic fluid sealing device (7), the multi-mode microwave resonance chamber (10) and the support bearing (26) to be connected to a spline shaft sleeve (29) of a microwave heating rotating jacket (27); the other end of the spline shaft (6) is connected to the coupling (5) and the variable frequency speed regulating motor (4) in sequence; and the support bearing (26) is fixed in the multi-mode microwave resonance chamber (10) by a stainless steel support frame; The clamping mechanism comprises an electric slide (17), a clamping magnetic fluid sealing device (14), a welding bellows (13), a hollow ejector pin (15) and a sliding bearing (25). The left and right ends of the welding bellows (13) are respectively connected to the multi-mode microwave resonant chamber (10) and the clamping magnetic fluid sealing device (14). The clamping magnetic fluid sealing device (14) is fixed to the electric slide (17). The lower end of the electric slide (17) is fixed to the upper end of the frame (3). The head of the hollow ejector pin (15) passes through the clamping magnetic fluid sealing device (14), the welding bellows (13), the multi-mode microwave resonant chamber (10) and the sliding bearing (25) inward in sequence and is connected to the ceramic bearing (36) of the microwave heating rotating jacket (27). The tail of the hollow ejector pin (15) is fixed to the clamping magnetic fluid sealing device (14). A two-color infrared thermometer (16) for measuring the temperature of the grinding medium is arranged on the right side of the clamping magnetic fluid sealing device (14).

2. The high temperature multi-atmosphere microwave energy grinding equipment according to claim 1, characterized in that: The grinding chamber (28) comprises a grinding tank body (38), a sealing cover (40), a grinding medium (39) and a base clip (37). The grinding tank body (38) is a cylindrical body, and the mouth of the grinding tank body (38) has a reverse thread. The sealing cover (40) is a T-shaped cylindrical body, and the lower end cylindrical body of the sealing cover (40) has a reverse thread that matches the mouth thread of the grinding tank body (38). The sealing cover (40) has a circular hole in the center, and quartz glass is inlaid in the circular hole. A plurality of small circular holes for vacuuming and passing the atmosphere are also formed around the central circular hole of the sealing cover (40). The bottom outer wall of the grinding tank body (38) is provided with a base clip (37), and the base clip (37) is connected to a ceramic gasket (31) in a microwave heating rotating jacket (27). The grinding medium (39) is placed in the grinding tank body (38).

3. The high temperature multi-atmosphere microwave energy grinding equipment according to claim 2, characterized in that: The vacuum pumping mechanism comprises a vacuum pump (1), a vacuum gauge (23) and a vacuum joint (2); the vacuum pump (1) is fixed to the lower part of the frame (3); an exhaust pipe of the vacuum pump (1) is welded to the multimode microwave resonant chamber (10); a vacuum gauge (23) and an exhaust valve (22) are installed on the exhaust pipe; and a vacuum bellows of the vacuum pump (1) is connected to the exhaust pipe via the vacuum joint (2).

4. The high temperature multi-atmosphere microwave energy grinding equipment according to claim 3, characterized in that: The ventilation mechanism comprises a gas flow meter (19), a gas mixing tank (21), an air inlet valve (18) and an air outlet valve (22); the gas mixing tank (21) is fixed to the lower part of the frame (3); the gas flow meter (19) is fixed to the outer wall of the housing (8); one end of the gas flow meter (19) is connected to a required gas source, and the other end is connected to the gas mixing tank (21); the gas mixing tank (21) is connected to the multi-mode microwave resonant chamber (10) via an air inlet pipe; the air inlet valve (18) is mounted on the air inlet pipe; and the air outlet valve (22) is mounted on an air extraction pipe of the multi-mode microwave resonant chamber (10).

5. The high temperature multi-atmosphere microwave energy grinding equipment according to claim 4, characterized in that: The power distribution control box (20) is respectively connected to the variable frequency speed regulating motor (4), the vacuum pump (1), the microwave source (12), the human-machine interface (9), the electric slide (17) and the two-color infrared thermometer (16).

6. A grinding method using the high temperature multi-atmosphere microwave energy grinding device as claimed in claim 5, characterized in that: It proceeds in the following steps: Step 1: Turn on the main power of the equipment and check whether all parts and control instruments are normal; Step 2: Prepare for grinding, weigh the grinding medium (39), pour the weighed grinding medium (39) into the grinding jar (38), cover with a sealing cover (40) and tighten, with a weighing accuracy of 0.1 mg; Step 3: Prepare a microwave-heated rotary grinding device (24), place a wave-transmitting heat-insulating material (33) in a circular metal basket (32), then place a wave-absorbing heating sleeve (34) in the wave-transmitting heat-insulating material (33), place the prepared grinding chamber (28) in the wave-absorbing heating sleeve (34), use an alumina ceramic screw to pass through the circular metal basket (32), the wave-transmitting heat-insulating material (33) and the wave-absorbing heating sleeve (34) in sequence, and press tightly against the outer wall of the grinding tank body (38), finally cover the wave-transmitting heat-insulating material cover and the circular metal cover (35), and tighten the circular metal basket (32) and the circular metal cover (35); Step 4: Install and fix the microwave heating rotary grinding device (24), open the furnace door (11), observe the position of the hollow ejector head, make the hollow ejector (15) slide in the sliding bearing (25), and then put the microwave heating rotary grinding device (24) into the multi-mode microwave resonance chamber (10), connect the spline shaft sleeve (29) of the microwave heating rotary outer sleeve (27) with the spline shaft (6) of the power mechanism, and insert the hollow ejector head into the ceramic bearing (36) of the microwave heating rotary outer sleeve (27), so that the spline shaft sleeve (29) and the ceramic bearing (36) at the left and right ends of the microwave heating rotary outer sleeve (27) are respectively connected and fixed to the spline shaft (6) of the power mechanism and the hollow ejector (15) of the clamping mechanism; Step 5: Adjust the two-color infrared thermometer (16) so that the infrared rays of the two-color infrared thermometer (16) pass through the central circular holes of the hollow ejector pin (15), the circular metal upper cover (35), the wave-transmitting heat-insulating material upper cover and the sealing cover (40) in sequence, so that the center of the infrared dot falls on the target to be measured as much as possible, then fix the two-color infrared thermometer (16) and close the furnace door (11); Step 6: Evacuate and ventilate the atmosphere, close the air inlet valve (18) and the air outlet valve (22) in sequence, stop the vacuum pump (1), connect the required gas source to the reserved interface of the gas flow meter, open the gas source ball valve and adjust the gas flow meter parameters at the same time, wait for the required gas source to enter the mixing tank (21) for mixing, then open the air inlet valve (18), pass the gas source, observe the vacuum gauge (23), and when the gauge pressure is slightly greater than one atmosphere, open the air outlet valve (22) to ensure smooth air flow; Step 7: Parameter setting: set the time, temperature, speed, microwave output power and other parameters on the human-machine interface (9). After the parameters are set, click the device start button and the device starts working. Step 8: After the experiment is over, the equipment runs to the set end time, the variable frequency speed regulating motor (4) and the microwave source (12) are automatically powered off and stop working, the temperature drops to below 50°C, and the gas source ball valve, the air inlet valve (18) and the air outlet valve (22) are closed in sequence; Step 9: Take out the microwave heating rotary grinding device (24), open the furnace door (11), separate the hollow ejector head from the ceramic bearing (36) of the microwave heating rotary jacket (27), loosen the connection between the spline shaft sleeve (29) at the bottom of the microwave heating rotary jacket (27) and the spline shaft (6) of the power mechanism, and then take out the microwave heating rotary grinding device (24) from the multi-mode microwave resonance chamber (10); Step 10: Take out the grinding chamber (28), first unscrew the fastening screw and the fastening nut of the circular metal cover (35) of the microwave heating rotating jacket (27), then remove the circular metal cover (35) and the wave-transmitting heat-insulating material cover in turn, and finally take out the grinding chamber (28); Step 11: Take out the grinding medium (39), unscrew the sealing cover (40) of the grinding jar body (38), pour the grinding medium (39) into a clean container prepared in advance, and clean the grinding jar body (38) and the sealing cover (40) in preparation for the next experiment; Step 12: Clean and weigh the grinding medium (39), pour the grinding medium (39) in the container into the cleaning tank of an ultrasonic cleaning machine, use an organic solvent as a cleaning agent to wash the grinding powder, wash it multiple times, dry the washed grinding medium (39), and place the dried grinding medium (39) in an analytical balance for weighing, with a weighing accuracy of 0.1 mg; Step 13: Data collection, data analysis and calculation of the wear of the grinding media.

7. The grinding method of the high temperature multi-atmosphere microwave energy grinding equipment according to claim 6, characterized in that: The microwave generation frequency of the microwave source (12) is 2450 MHz, the microwave output power is 300 W to 4275 W, the maximum operating temperature of the high-temperature multi-atmosphere microwave energy grinding equipment is 1200° C., and the speed of the variable frequency speed regulating motor (4) is 30 to 150 r / min.

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