CN112902662A - Bell-jar furnace for testing spreadability of thermal-state repair material and test method - Google Patents
Bell-jar furnace for testing spreadability of thermal-state repair material and test method Download PDFInfo
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- CN112902662A CN112902662A CN202110168484.0A CN202110168484A CN112902662A CN 112902662 A CN112902662 A CN 112902662A CN 202110168484 A CN202110168484 A CN 202110168484A CN 112902662 A CN112902662 A CN 112902662A
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- furnace
- spreadability
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- repair material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B11/00—Bell-type furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
A bell jar furnace for testing the spreadability of a thermal-state repair material and a test method relate to the field of test devices. The bell-jar furnace for testing the spreadability of the thermal-state repair material comprises a heating furnace with an opening at the bottom, a furnace bottom plate capable of lifting to open and close the opening, a lifting device for driving the furnace bottom plate to lift, a spreading lining plate arranged on the top surface of the furnace bottom plate, an air supply device communicated with the heating furnace through an air supply pipe and a tail gas treatment device communicated with the heating furnace through a smoke pipe. The bell jar furnace and the test method for testing the spreadability of the thermal-state repair material can accurately simulate and measure the spreadability of the thermal-state repair material at high temperature, and can reduce the pollution of black smoke generated by organic matters in a sample to a laboratory.
Description
Technical Field
The application relates to the field of testing devices, in particular to a bell jar furnace and a testing method for testing the spreadability of a thermal-state repair material.
Background
The thermal-state repairing material is a bulk repairing material formed by uniformly mixing refractory aggregate, fine powder, a composite bonding agent, a sintering agent, a heating agent, a fluidizing agent and the like, and has a good self-flowing effect in a high-temperature molten state; the hot-state repairing material is used for being put into a converter or an electric furnace, uniformly flows into a seriously corroded part or a crack after being melted by residual heat, is sintered and solidified, and fulfills the aim of repairing a furnace lining. The thermal-state repairing material has the advantages of short sintering time, saving the repairing time, improving the service efficiency, prolonging the service life of the industrial kiln, simultaneously utilizing the residual heat in the kiln, avoiding the need of baking the kiln for sintering separately and reducing the energy consumption, thereby being widely applied to the nursing and maintaining operation of the furnace lining of high-temperature kiln equipment such as a converter, an electric furnace and the like.
At present, no standard test method is available for the fluidity of the hot repair material, and researchers generally adopt a simple test method to detect according to experience and laboratory equipment conditions: for example, a predetermined sample is taken out from a metal ladle or a vinyl bag and put on a previously heated iron plate or magnesium brick plate, and the fluidity is judged to be good or bad by observing the spreading of the sample after sintering. The test result obtained in the way is closely related to the action technique of an operator, has great randomness, cannot accurately judge the fluidity, has potential safety hazard in the operation method, and causes harm to the health of the tester due to black smoke generated when the thermal-state repairing material is incompletely combusted.
Disclosure of Invention
The application aims to provide a bell jar furnace and a test method for testing the spreadability of a thermal-state repair material, which can accurately simulate and measure the spreadability of the thermal-state repair material at high temperature and can reduce the pollution of black smoke generated by organic matters in a sample to a laboratory.
The embodiment of the application is realized as follows:
the embodiment of the application provides a bell jar stove of test hot patching material spreadability, it includes that the bottom has open-ended heating furnace, liftable with open-ended furnace bottom plate, elevating gear for driving the furnace bottom plate lift, locate the lining board that spreads of furnace bottom plate top surface, pass through the air supply arrangement of blast pipe intercommunication and pass through the tail gas processing apparatus of tobacco pipe intercommunication with the heating furnace.
In some optional embodiments, the heating furnace further comprises a supporting seat for supporting the heating furnace and a workbench for supporting the lifting device.
In some alternative embodiments, the upper surface of the work table is provided with a receiving hole, and the furnace bottom plate is lifted out of or into the receiving hole, so that the work table is flush with the upper surface of the furnace bottom plate.
In some alternative embodiments, the worktable is provided with a moving mechanism which is used for driving the spreading lining board to move to the furnace bottom plate along a straight line or to be separated from the furnace bottom plate.
In some optional embodiments, the moving mechanism comprises a conveyor belt capable of reciprocating, a motor fixed on the conveyor belt, and a connecting rod with one end connected with an output shaft of the motor, wherein one end of the connecting rod far away from the conveyor belt is connected with a push rod, and the connecting rod extends along the conveying direction of the conveyor belt.
In some alternative embodiments, the air supply means comprises a blower and an oxygen tank in communication with the air supply duct.
In some alternative embodiments, the tail gas treatment device comprises an absorption bottle filled with alkaline solution and an adsorption tube communicated with the absorption bottle through a pipeline, one end of the smoke tube extends below the liquid level of the alkaline solution, and the adsorption tube is filled with porous adsorption material.
The application also provides a test method for testing the spreadability of the thermal-state repair material, which is carried out by using the bell jar furnace for testing the spreadability of the thermal-state repair material, and comprises the following steps:
heating a heating furnace to a test temperature, placing the thermal-state repair material on a spreading lining plate on the top surface of a furnace bottom plate, controlling a lifting device to drive a furnace bottom plate to lift up a closed opening, introducing air or oxygen into the heating furnace by using an air supply device to enable the thermal-state repair material to be fully combusted, melted and cast, closing the heating furnace and cooling to room temperature, and checking the casting distance of the molten thermal-state repair material on the spreading lining plate.
The beneficial effect of this application is: according to the bell-jar furnace and the method for testing the spreadability of the thermal-state repair material, the lifting furnace bottom plate is driven by the lifting device to send the spreading lining plate into the heating furnace for heating, the situation that the thermal-state repair material is put into the industrial kiln and melted and trickled through residual heat and is sintered to repair the furnace lining is simulated, so that the spreading performance of the thermal-state repair material at high temperature is accurately simulated and measured, the pollution of black smoke generated by organic matters in a sample to a test room can be reduced, the test environment is improved, and the physical damage to operators is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic partial sectional structural view of a bell jar furnace for testing the spreadability of a hot repair material provided in example 1 of the present application;
fig. 2 is a schematic structural diagram of an air supply device in a bell jar furnace for testing the spreadability of a hot repair material provided in embodiment 1 of the present application;
fig. 3 is a schematic structural diagram of a tail gas treatment device in a bell jar furnace for testing the spreadability of a thermal-state repair material provided in example 1 of the present application;
fig. 4 is a schematic structural diagram of a first use state of a moving mechanism in a bell jar furnace for testing the spreadability of a hot repair material provided in example 2 of the present application;
fig. 5 is a schematic structural diagram of a second use state of the moving mechanism in the bell jar furnace for testing the spreadability of the hot repair material provided in example 2 of the present application;
fig. 6 is a schematic structural diagram of a third use state of the moving mechanism in the bell jar furnace for testing the spreadability of the hot repair material provided in example 2 of the present application;
fig. 7 is a schematic structural diagram of a fourth use state of the moving mechanism in the bell jar furnace for testing the spreadability of the thermal-state repair material provided in example 2 of the present application.
In the figure: 100. heating furnace; 110. an opening; 120. a furnace floor; 130. a lifting device; 140. spreading a lining plate; 150. an air supply pipe; 160. an air supply device; 161. a fan; 162. an oxygen tank; 170. a smoke pipe; 180. a tail gas treatment device; 181. an absorption bottle; 182. an adsorption tube; 190. a supporting seat; 200. a work table; 210. an accommodation hole; 220. a conveyor belt; 230. a motor; 240. a connecting rod; 250. a push rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The characteristics and performance of the bell jar furnace test method for testing the spreadability of hot repair mix of the present application are described in further detail below with reference to the examples.
Example 1
As shown in fig. 1, 2 and 3, an embodiment of the present application provides a bell jar furnace for testing the spreadability of thermal repair materials, which includes a heating furnace 100 having an opening 110 at the bottom, a furnace bottom plate 120 capable of being lifted to open and close the opening 110, a lifting device 130 for driving the furnace bottom plate 120 to be lifted, a spreading lining plate 140 disposed on the top surface of the furnace bottom plate 120, an air supply device 160 communicated with the heating furnace 100 through an air supply pipe 150, an exhaust gas treatment device 180 communicated with the heating furnace 100 through a smoke pipe 170, a support base 190 for supporting the heating furnace 100, and a workbench 200 for supporting the lifting device 130, wherein the workbench 200 has an accommodating hole 210 on the upper surface, and the furnace bottom plate 120 is removed from or enters the accommodating hole 210 when lifted and is leveled with the upper surface of the furnace bottom plate 120; the blower 160 includes a blower 161 and an oxygen tank 162 communicated with the blower pipe 150; the tail gas treatment device 180 comprises an absorption bottle 181 filled with alkaline solution and an adsorption pipe 182 communicated with the absorption bottle 181 through a pipeline, one end of the smoke pipe 170 extends below the liquid level of the alkaline solution, the adsorption pipe 182 is filled with porous adsorption material, the alkaline solution is sodium hydroxide aqueous solution, and the porous repair material is activated carbon; the lifting device 130 is a lifting oil cylinder, and the rod of the oil cylinder is connected with the bottom of the furnace bottom plate 120; the bottom of the furnace bottom plate 120 is made of steel and is connected with an oil cylinder rod of the lifting device 130, the top of the furnace bottom plate 120 is made of heat-insulating and fireproof materials, and four outer side walls of the furnace bottom plate 120 are made of flexible fireproof fibers and are used for being in mortise and tenon joint with the bottom opening 110 of the heating furnace 100; the spreading liner 140 is made of a heat-resistant magnesium material.
The application also provides a test method for testing the spreadability of the thermal-state repair material, which is carried out by using the bell jar furnace for testing the spreadability of the thermal-state repair material, and comprises the following steps:
pressing the thermal-state repairing material into a cylindrical sample with the diameter of 50mm and the height of 50 mm;
controlling the oil cylinder rod of the lifting oil cylinder to contract to drive the furnace bottom plate 120 to descend and be accommodated in an accommodating hole 210 formed in the workbench 200, enabling the furnace bottom plate 120 to be flush with the upper surface of the workbench 200, placing the spreading lining plate 140 on the top surface of the furnace bottom plate 120, then controlling the oil cylinder rod of the lifting oil cylinder to extend out to drive the furnace bottom plate 120 to ascend and close the opening 110 at the bottom of the heating furnace 100, controlling the heating furnace 100 to start and heat to a preset test temperature of 1000 ℃ and keep warm for 15min, controlling the oil cylinder rod of the lifting oil cylinder to contract to drive the furnace bottom plate 120 to descend, using a clamp to clamp and place the thermal repair material sample on the spreading lining plate 140 on the top surface of the furnace bottom plate 120, controlling the oil cylinder rod of the lifting oil cylinder to extend out to drive the furnace bottom plate 120 to ascend and close the opening 110, using an air supply device 160 to introduce air into the heating furnace 100 to enable the thermal repair material, the distance the molten hot repair mass was cast on the spreader liner 140 was examined. In the test process, the flue gas generated by the sufficient combustion of the thermal-state repair material sample is introduced into the alkaline solution in the absorption bottle 181 through the smoke pipe 170 to absorb the acid gas, and further the incompletely combusted solid particles are absorbed by the activated carbon porous absorption material in the absorption tube 182.
The bell jar furnace and the method for testing the spreadability of the thermal-state repair material provided by the embodiment send the spreading lining plate 140 into the heating furnace 100 for heating through the lifting furnace bottom plate 120 driven by the lifting device, and simulate the situation that the thermal-state repair material is put into the industrial kiln and melted, flowed and sintered through residual heat to repair the furnace lining, so that the spreading performance of the thermal-state repair material at high temperature is accurately simulated and measured, the pollution of black smoke generated by organic matters in a sample to a test room can be reduced, the test environment is improved, and the physical damage to operators is avoided.
Example 2
As shown in fig. 4, 5, 6 and 7, an embodiment of the present application provides a bell jar furnace for testing the spreadability of hot repair material, which has substantially the same structure as the bell jar furnace for testing the spreadability of hot repair material provided in embodiment 1, except that in this embodiment, a moving mechanism is provided on a work bench 200, the moving mechanism is used for driving a spreading lining plate 140 to move linearly onto a furnace bottom plate 120 or to be separated from the furnace bottom plate 120, the moving mechanism includes a conveyor belt 220 capable of moving back and forth, a motor 230 fixed on the conveyor belt 220, and a connecting rod 240 having one end connected to an output shaft of the motor 230, one end of the connecting rod 240 away from the conveyor belt 220 is connected to a push rod 250, the push rod 250 is arranged perpendicular to the connecting rod 240, and the connecting rod 240 extends along a conveying direction of the. The conveyor belt 220 in this embodiment is a part of the conveyor belt mechanism, the conveyor belt 220 is sleeved on the two drums, and the drums are driven to rotate by a driving motor to drive the conveyor belt 220 to move back and forth, and the conveyor belt mechanism is a conventional device, and therefore, detailed description thereof is omitted.
The bell jar furnace for testing the spreadability of the thermal-state repair material provided by the embodiment is provided with the moving mechanism on the workbench 200, the moving mechanism can move the spreading lining plate 140 placed on the surface of the workbench 200 along a straight line to descend and then accommodate the spreading lining plate 140 on the accommodating hole 210 on the workbench 200 and on the furnace bottom plate 120 in the accommodating hole 210 on the workbench 200, and the moving mechanism is used for moving the spreading lining plate 140 accommodated on the furnace bottom plate 120 in the accommodating hole 210 on the workbench 200 along the straight line direction to be separated from the furnace bottom plate 120, so that an operator can conveniently move the spreading lining plate 140 to be processed to the furnace bottom plate 120 with high temperature after being heated and send the heated furnace bottom plate 120 to the heating furnace 100 for heating, and take down the spreading.
Specifically, when the moving mechanism works, firstly, the oil cylinder rod of the lifting oil cylinder is controlled to contract to drive the furnace bottom plate 120 to descend and be accommodated in the accommodating hole 210 formed in the workbench 200, so that the furnace bottom plate 120 is flush with the upper surface of the workbench 200, then the spreading lining plate 140 is placed on the workbench 200, the conveyor belt 220 is controlled to move to drive the motor 230, the connecting rod 240 and the push rod 250 to move along the linear direction, the push rod 250 is enabled to push the spreading lining plate 140 on the workbench 200 to the upper surface of the furnace bottom plate 120 in the accommodating hole 210 on the workbench 200, then the conveyor belt 220 moves in the reverse direction to drive the motor 230, the connecting rod 240 and the push rod 250 to move in the reverse direction along the linear direction to be separated from the furnace bottom plate 120, and the oil cylinder rod of.
After the test is finished, the oil cylinder rod of the lifting oil cylinder is controlled to contract to drive the furnace bottom plate 120 to descend and be accommodated in the accommodating hole 210 formed in the workbench 200, so that the furnace bottom plate 120 is flush with the upper surface of the workbench 200, then controlling the motor 230 to start to drive the connecting rod 240 and the push rod 250 to rotate, so that the push rod 250 rotates to be vertical to the upper surface of the workbench 200, at this time, the conveyor belt 220 moves to drive the motor 230, the connecting rod 240 and the push rod 250 to move along a linear direction, so that the push rod 250 moves to cross the furnace bottom plate 120 and the spreading lining plate 140 on the workbench 200, the motor 230 drives the connecting rod 240 and the push rod 250 to rotate reversely, so that the push rod 250 rotates to be parallel to the upper surface of the workbench 200, then the conveyer belt 220 moves reversely to drive the motor 230, the connecting rod 240 and the push rod 250 to move reversely along the linear direction, so that the push rod 250 pushes the spreading lining board 140 on the furnace bottom plate 120 to separate and move to the workbench 200, thereby facilitating the operator to observe the melted test thermal-state repair material on the spreading lining board 140.
The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Claims (8)
1. The bell-jar furnace for testing the spreadability of the thermal-state repair material is characterized by comprising a heating furnace with an opening at the bottom, a lifting device capable of lifting to open and close the opening, a lifting device used for driving the lifting of the furnace bottom plate, a spreading lining plate arranged on the top surface of the furnace bottom plate, an air supply device communicated with the heating furnace through an air supply pipe and a tail gas treatment device communicated with the heating furnace through a smoke pipe.
2. The bell jar furnace for testing the spreadability of hot repair material according to claim 1, further comprising a support base for supporting the heating furnace and a table for supporting the lifting device.
3. The bell jar furnace for testing the spreadability of hot repair material according to claim 2, wherein the top surface of the table is provided with a receiving hole, and the furnace bottom plate is lifted out of or into the receiving hole and is flush with the top surface of the furnace bottom plate.
4. The bell jar furnace for testing the spreadability of the hot repair material according to claim 3, wherein a moving mechanism is provided on the worktable, and the moving mechanism is used for driving the spreading lining board to move linearly onto the furnace bottom plate or to be separated from the furnace bottom plate.
5. The bell jar furnace for testing the spreadability of hot repair material according to claim 4, wherein the moving mechanism comprises a reciprocally movable conveyor belt, a motor fixed on the conveyor belt, and a connecting rod having one end connected to an output shaft of the motor, wherein a push rod is connected to an end of the connecting rod away from the conveyor belt, and the connecting rod extends along a conveying direction of the conveyor belt.
6. The bell jar furnace for testing the spreadability of hot repair material of claim 1 wherein the air supply device comprises an air blower and an oxygen tank in communication with the air supply tube.
7. The bell jar furnace for testing the spreadability of the hot repair mix according to claim 1, wherein the tail gas treatment device comprises an absorption bottle filled with an alkaline solution and an adsorption tube communicated with the absorption bottle through a pipeline, one end of the smoke tube extends below the liquid level of the alkaline solution, and the adsorption tube is filled with a porous adsorption material.
8. A test method for testing the spreadability of a hot repair mix, which is performed using the bell jar furnace for testing the spreadability of a hot repair mix according to any one of claims 1 to 7, comprising the steps of:
heating a heating furnace to a test temperature, placing a thermal-state repair material on the top surface of the furnace bottom plate on the spreading lining plate, controlling a lifting device to drive a furnace bottom plate to lift and seal the opening, introducing air or oxygen into the heating furnace by using an air supply device to fully combust and melt the thermal-state repair material for casting, closing the heating furnace, cooling to room temperature, and checking the distance of the casting on the spreading lining plate of the molten thermal-state repair material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110168484.0A CN112902662A (en) | 2021-02-07 | 2021-02-07 | Bell-jar furnace for testing spreadability of thermal-state repair material and test method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110168484.0A CN112902662A (en) | 2021-02-07 | 2021-02-07 | Bell-jar furnace for testing spreadability of thermal-state repair material and test method |
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| CN112902662A true CN112902662A (en) | 2021-06-04 |
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| CN202110168484.0A Pending CN112902662A (en) | 2021-02-07 | 2021-02-07 | Bell-jar furnace for testing spreadability of thermal-state repair material and test method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205066436U (en) * | 2015-10-16 | 2016-03-02 | 河南东普热能科技有限公司 | Multi -functional microwave high temperature bell jar kiln |
| CN106181101A (en) * | 2016-07-13 | 2016-12-07 | 江苏科技大学 | A kind of observation instantaneous high-temperature wetting areas assay device |
| CN208520198U (en) * | 2018-04-26 | 2019-02-19 | 河源铁研电子科技有限公司 | A kind of bell-type furnace |
| CN110220824A (en) * | 2019-07-03 | 2019-09-10 | 郑州机械研究所有限公司 | A kind of gas shielded solder sprawls test method and its device |
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2021
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205066436U (en) * | 2015-10-16 | 2016-03-02 | 河南东普热能科技有限公司 | Multi -functional microwave high temperature bell jar kiln |
| CN106181101A (en) * | 2016-07-13 | 2016-12-07 | 江苏科技大学 | A kind of observation instantaneous high-temperature wetting areas assay device |
| CN208520198U (en) * | 2018-04-26 | 2019-02-19 | 河源铁研电子科技有限公司 | A kind of bell-type furnace |
| CN110220824A (en) * | 2019-07-03 | 2019-09-10 | 郑州机械研究所有限公司 | A kind of gas shielded solder sprawls test method and its device |
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Application publication date: 20210604 |