A tungsten-molybdenum high-temperature test furnace and a use method thereof

Abstract

The present application relates to a kind of tungsten molybdenum high temperature test furnace and use method, including furnace body;The bottom of the furnace body is equipped with base, and the front end side wall of base is equipped with control panel;The front end side wall of the furnace body is hinged with furnace door by hinge;The furnace body is opened in furnace chamber, and the inboard of furnace chamber is equipped with resistance wire, and several faces except bottom surface in furnace chamber are all equipped with resistance wire, and resistance wire is tungsten wire or molybdenum wire material;The inboard of the furnace door is fixed with firebrick corresponding to furnace chamber;The front end side wall of the furnace body is hinged with overhanging support opposite to one side of furnace door by hinge, and overhanging support is slidably connected with clamp;Through the setting of overhanging support, sample is closely associated with sending into furnace chamber, and the clamp movably connected on overhanging support can shorten the time of crucible sending into furnace chamber and taking out consumption, prolong the service life of electric furnace, simultaneously, after furnace door is closed, it can be limited using overhanging support, and the effect of facilitating opening and closing furnace door is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of resistance furnace, in particular to a tungsten-molybdenum high-temperature test furnace and a use method thereof. BACKGROUND

[0002] The high-temperature test furnace is also called high-temperature resistance furnace, which is an experimental equipment for preparing high-temperature materials.

[0003] The high-temperature resistance furnace is generally composed of a furnace chamber and a heating element, wherein the heating element is usually an electric resistance wire or an electric resistance rod. When the electric resistance wire or the electric resistance rod is electrified, it will generate heat and transfer the heat to the furnace chamber, so that the sample in the furnace chamber is heated. The high-temperature resistance furnace can generally reach a high temperature of 1000 DEG C or above, and is suitable for preparing high-temperature ceramics, metals, alloys and other materials.

[0004] The high-temperature resistance furnace in the prior art has many matters needing attention during use, including cutting off the power supply when loading and unloading the sample to prevent electric shock; the opening time of the furnace door should be shortened as much as possible to prolong the service life of the electric furnace. However, the phenomenon of not cutting off the power supply contact due to operation problems still occurs during the use of the existing resistance furnace. At the same time, when loading and unloading the sample, the sample needs to be placed in the crucible, and then the anti-electric shock gloves are worn, and the crucible is sent to the center of the furnace chamber by the clamp. The actions involved in the process include turning off the power, opening the furnace door, loading and unloading the sample, wearing gloves, holding the clamp, clamping the crucible and sending the crucible into the furnace chamber. Many steps are involved in the process, and a certain amount of time is consumed during the process. That is, the necessary actions consume a certain amount of time during the process of completing the sending of the sample into the crucible and the taking out after heating. The furnace door cannot be quickly closed, and the service life of the electric furnace is shortened. SUMMARY

[0005] Therefore, the present application aims to overcome at least one of the problems in the prior art.

[0006] To solve the above technical problems, the present application provides a tungsten-molybdenum high-temperature test furnace, which comprises a furnace body; a base is arranged at the bottom of the furnace body, and a control panel is arranged on the front end side wall of the base; a furnace door is hingedly connected to the front end side wall of the furnace body; a furnace chamber is formed in the furnace body, and an electric resistance wire is arranged on the inner side of the furnace chamber; the electric resistance wire is arranged on the other surfaces of the furnace chamber except the bottom surface; the electric resistance wire is made of tungsten wire or molybdenum wire; a firebrick is fixedly connected to the inner side of the furnace door corresponding to the furnace chamber; a cantilevered support is hingedly connected to the side opposite to the furnace door on the front end side wall of the furnace body; a clamp is slidingly connected to the cantilevered support; a supporting arm is arranged at one end of the cantilevered support, and the supporting arm is hingedly connected to the outer side of the furnace body; a clamping block is fixedly connected to the inner side of the supporting arm, and the clamping block is clamped with the adjacent surface of the furnace door; and the surface of the cantilevered support is flush with the inner surface of the furnace chamber.

[0007] In one embodiment of the present application, the clamp comprises a first clamping arm, a second clamping arm and a pin shaft; the first clamping arm and the second clamping arm are hinged by the pin shaft; the pin shaft is arranged at the middle part of the first clamping arm and the second clamping arm; the bottom of the pin shaft is fixedly connected with a sliding block, and the pin shaft is slidingly connected in the suspended support through the sliding block.

[0008] In one embodiment of the present application, the outside of the tail of the first clamping arm and the second clamping arm is sleeved with a rubber sleeve; the first clamping arm and the second clamping arm are made of metal material; the inside of the tail of the first clamping arm and the second clamping arm is fixedly connected with a first spring; the end of the first clamping arm is fixedly connected with a bottom sealing plate.

[0009] In one embodiment of the present application, the inside of the suspended support is provided with a movable groove; the surface of the suspended support is provided with a sliding groove; the sliding groove is communicated with the movable groove; the sliding block is slidingly connected in the movable groove, and the pin shaft is slidingly connected in the sliding groove.

[0010] In one embodiment of the present application, the front end side wall of the furnace body is provided with a shallow groove; the middle part of the shallow groove is fixedly connected with a ceramic edge guard corresponding to the outer edge position of the hearth; the bottom of one side of the shallow groove is provided with a recess, and the recess is provided with a plug-in interface; the plug-in interface is plug-in matched with a socket; the furnace body is provided with a separate excitation release corresponding to the recess; the separate excitation release is electrically connected with the control board circuit.

[0011] In one embodiment of the present application, the inside of the socket is fixedly connected with a plug, and the plug is plug-in matched with the plug-in interface; the inside of the socket is fixedly connected with a spring rod, and the spring rod is movably matched with the recess.

[0012] In one embodiment of the present application, the inside of the furnace door is fixedly connected with an abutting block; the abutting block corresponds to the socket.

[0013] A use method of a tungsten-molybdenum high-temperature test furnace, comprising the following steps:

[0014] S1: rotating the suspended support to an angle greater than 90° with the furnace door, and then separating the furnace door from the suspended support;

[0015] S2: adjusting the angle between the furnace door and the opening of the furnace body to 90°, and then rotating the suspended support to be attached to the furnace body;

[0016] S3: placing the experimental product in the crucible and placing the whole in the end of the clamp;

[0017] S4: pushing the clamp to drive the crucible to be sent into the center of the hearth;

[0018] S5: holding the tail of the clamp tightly, and the crucible is naturally vertically arranged in the center of the hearth;

[0019] S6: keeping the holding state of the tail of the clamp until the end of the clamp is separated from the crucible, and then retracting the clamp.

[0020] S7: reversely rotating the suspended support to an angle greater than 90° with the furnace body, and keeping the suspended support stationary;

[0021] S8: reversely rotating the furnace door until the furnace door is attached to the furnace body, releasing the suspended support, and allowing the suspended support to be engaged with the furnace door;

[0022] S9: heating the crucible by controlling the electric resistance wire in the furnace through the control panel;

[0023] S10: when the heating is completed, repeating S1-S2, holding the tongs and sending them into the center of the furnace, releasing the tail of the tongs after the tongs contact the crucible, clamping the crucible with the tongs, and then reversely retracting the tongs to take out the crucible on the suspended support.

[0024] In one embodiment of the present application, in S1 and S2, the abutting block is separated from the socket, the socket is separated from the plug-in interface under the action of the spring rod, and the circuit controlled by the control panel is de-energized at this time, so that the electric resistance wire cannot be started.

[0025] In one embodiment of the present application, in S3, S4 and S5, the experimental sample is placed in the crucible, which can be placed at the end of the tongs together, and is supported by the suspended support, and the tongs and the crucible are pushed to the center of the furnace together by pushing the tongs to move on the suspended support.

[0026] The above technical solution of the present application has the following advantages compared with the prior art:

[0027] 1. The present application closely links the sample loading and sending into the furnace through the setting of the suspended support, cooperates with the tongs movably connected on the suspended support, shortens the time of sending the crucible into the furnace and taking out the consumed crucible, prolongs the service life of the electric furnace, and at the same time, the suspended support can be used to limit the furnace door after the furnace door is closed, which facilitates the opening and closing of the furnace door.

[0028] 2. The present application sets the socket and the separate excitation release in the inside of the furnace body, when the socket is completely inserted into the plug-in interface, the separate excitation release is de-energized, the control panel can close the switch to start the electric resistance wire heating; when the socket is separated from the plug-in interface or is not completely inserted in place, the separate excitation release is energized, at this time the control panel cannot start the electric resistance wire heating, when the socket is completely inserted into the plug-in interface, the furnace door is closed, at this time the electric resistance wire can work, and when the socket is not completely inserted into the plug-in interface, the furnace door is opened or not completely closed, at this time the electric resistance wire cannot work, which avoids the situation that the operator is electrically shocked and the heat in the furnace spills out during the process of taking and placing the crucible. BRIEF DESCRIPTION OF DRAWINGS

[0029] For the purpose of making the content of the present application more easily and clearly understood, the present application will be further described in detail below according to the specific embodiments of the present application and in conjunction with the accompanying drawings.

[0030] Figure 1 is a perspective view of one embodiment of the present application;

[0031] Figure 2 is a perspective view of the furnace door opening state in one embodiment of the present application;

[0032] Figure 3 is a perspective view of the suspended support fitting the hearth state in one embodiment of the present application;

[0033] Figure 4 is a perspective view of the suspended support and clamp in one embodiment of the present application;

[0034] Figure 5 is a sectional perspective view of the suspended support and clamp in one embodiment of the present application;

[0035] Figure 6 is a perspective view of the clamp in one embodiment of the present application;

[0036] The description of the accompanying drawings of the present application is as follows: 1, furnace body; 11, control panel; 12, furnace door; 121, fireproof brick; 122, abutting block; 13, suspended support; 131, support arm; 132, clamping block; 133, sliding groove; 134, movable slot; 14, hearth; 15, resistance wire; 16, recess; 2, clamp; 21, first clamping arm; 22, second clamping arm; 23, first spring; 24, pin shaft; 25, sliding block; 26, bottom sealing plate; 3, hinge; 4, socket; 41, spring rod. DETAILED DESCRIPTION

[0037] The present application will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present application and implement it, but the embodiments are not intended to limit the present application.

[0038] Reference Figures 1-6As shown, a tungsten molybdenum high temperature test furnace, including furnace body 1, the bottom of the furnace body 1 is provided with a base, and the front end side wall of the base is provided with a control panel 11, the front end side wall of the furnace body 1 is hinged with a furnace door 12 through a hinge 3, the furnace body 1 is provided with a hearth 14, and the inner side of the hearth 14 is provided with a resistance wire 15, the inner side of the furnace door 12 is fixed with a firebrick 121 corresponding to the hearth 14, the experimental product to be heated is placed in the crucible during use, and the experimental product containing the crucible is placed in the center of the hearth 14, then the furnace door 12 is closed, the test furnace is started through the on-off button on the control panel 11, and the experimental product in the crucible is heated by using the resistance wire 15, wherein the hearth 14 is provided in a cubic or cuboid structure, and the resistance wire 15 is provided on the other surfaces in the hearth 14 except the bottom surface, and the resistance wire 15 is made of tungsten wire or molybdenum wire material, the opposite side of the furnace door 12 on the front end side wall of the furnace body 1 is hinged with a suspended bracket 13 through a hinge 3, and the suspended bracket 13 is slidably connected with a clamp 2, one end of the suspended bracket 13 is provided with a supporting arm 131, and the supporting arm 131 is hinged to the outside of the furnace body 1 through a hinge 3, the inner side of the supporting arm 131 is fixedly connected with a clamping block 132, and the clamping block 132 is connected with the adjacent surface of the furnace door 12, the surface of the suspended bracket 13 is flush with the inner surface of the hearth 14.In order to keep the furnace 1 heating process in the hearth 14 heat exchange efficiency and external connection is reduced, concentrated heat to achieve the rapid heating of the crucible in the experimental product, need to close the furnace door 12 and furnace 1 closely connected, in the furnace door 12 closed, using firebrick 121 and hearth 14 cooperation, can be closed hearth 14, thereby reducing the hearth 14 and the outside heat exchange efficiency, concentrated heat to facilitate the heating of the experimental product, using the suspension bracket 13 on the side of the arm 131 block 132, can be in the furnace door 12 closed, on the furnace door 12 for limiting, make it closely connected with the furnace 1, in the opening furnace door 12 placed crucible, artificial rotation of the suspension bracket 13, make the block 132 and 12 separation, the furnace door at this time, and open again rotating suspension bracket 13, make it rotate to one side and the furnace 1 fit, at this time the surface of the suspension bracket 13 and hearth 14 inner surface flush, the crucible is placed on the clamp 2, and then through the sliding clamp 2, make the crucible to the center of the hearth 14, and then release the clamp 2, so that the crucible can be natural in the center of the hearth 14, the completion of the crucible and experimental product placement, then rotate the suspension bracket 13 again, and synchronous rotation of the furnace door 12, make the furnace door 12 closed, using the suspension bracket 13 on the side of the arm 131 block 132, again realize the restriction of the furnace door 12, make the furnace door 12 and the furnace 1 closely connected, through the suspension bracket 13 of the setting, the sample loading and taking into the hearth 14 contact closely, shorten the crucible into the hearth 14 and the time of taking out the consumption, prolong the service life of the electric furnace, at the same time, the furnace door 12 closed, can be used to limit the suspension bracket 13, play the effect of convenient opening and closing of the furnace door 12, wherein the suspension bracket 13 and the furnace 1 between can be through the hinge 3 cooperation reed activity, and the reed exists two state, one state can limit the suspension bracket 13 and the furnace 1 front end side wall arrangement 90 DEG, the second state can limit the suspension bracket 13 and the furnace 1 front end side wall arrangement 180 DEG or 0 DEG arrangement.

[0039] Referring to Figure 6As shown, as an embodiment of the present application, the clamp 2 comprises a first clamping arm 21, a second clamping arm 22 and a pin shaft 24; the first clamping arm 21 and the second clamping arm 22 are hinged through the pin shaft 24; the pin shaft 24 is arranged at the middle part of the first clamping arm 21 and the second clamping arm 22; the bottom of the pin shaft 24 is fixedly connected with a sliding block 25, and the pin shaft 24 is slidingly connected in the suspended bracket 13 through the sliding block 25; when the suspended bracket 13 is arranged at 180° or 0° with the front end side wall of the furnace body 1, at this time the clamp 2 is on the suspended bracket 13, the crucible containing the experimental product is placed on the clamp 2, and the clamp 2 is pushed to move forward into the hearth 14; since the surface of the suspended bracket 13 is flush with the inner surface of the hearth 14, the clamp 2 can be pushed to the inside of the hearth 14 with small resistance; when the clamp 2 moves to the limit, at this time the crucible is just located at the center position of the hearth 14, the tail part of the clamp 2 is loosened, so that the crucible at the end part of the first clamping arm 21 and the second clamping arm 22 can be separated from the clamp 2, the clamp 2 is manually moved out of the hearth 14 in the reverse direction, the suspended bracket 13 is rotated to be arranged at 90° with the front end side wall of the furnace body 1, the furnace door 12 is rotated, so that the furnace door 12 is attached to the surface of the furnace body 1, at this time the suspended bracket 13 is continuously rotated in the reverse direction, and the clamp 2 is loosened, so that the clamp block 132 can limit the furnace door 12.

[0040] Referring to Figure 6 As shown, as an embodiment of the present application, the tail part outside of the first clamping arm 21 and the second clamping arm 22 is sleeved with a rubber sleeve; the first clamping arm 21 and the second clamping arm 22 are made of metal material; the tail part inside of the first clamping arm 21 and the second clamping arm 22 is fixedly connected with a first spring 23; the end part of the first clamping arm 21 is fixedly connected with a bottom sealing plate 26; the first spring 23 provides pressure in the initial state, so as to expand the tail part of the first clamping arm 21 and the second clamping arm 22, and clamp the end part of the first clamping arm 21 and the second clamping arm 22; when the crucible is placed at the end part of the first clamping arm 21 and the second clamping arm 22, the tail part of the clamp 2 is gripped by hand, so as to offset part of the pressure of the first spring 23, and separate the end part of the first clamping arm 21 and the second clamping arm 22; when the crucible is placed on the first clamping arm 21 and the second clamping arm 22, and specifically placed on the bottom sealing plate 26 of the first clamping arm 21, the crucible is pushed to be sent to the center of the hearth 14, at this time the tail part of the first clamping arm 21 and the second clamping arm 22 is gripped by hand, so as to offset the pressure of the first spring 23, and separate the crucible from the bottom sealing plate 26; then the clamp 2 is pulled back until the crucible is separated, and the suspended bracket 13 is rotated to be arranged at 90° with the front end side wall of the furnace body 1, so as to complete the placement of the crucible and the experimental product.

[0041] Referring to Figure 5As shown, as an embodiment of the present application, the overhanging support 13 is internally provided with a movable slot 134; the surface of the overhanging support 13 is provided with a sliding slot 133; the sliding slot 133 is communicated with the movable slot 134; the sliding block 25 is slidingly connected in the movable slot 134, and the pin shaft 24 is slidingly connected in the sliding slot 133.

[0042] Referring to Figures 1-3 As shown, as an embodiment of the present application, the front end side wall of the furnace body 1 is provided with a shallow slot; the middle part of the shallow slot is fixedly connected with a ceramic edge guard corresponding to the outer edge position of the hearth 14; the bottom of one side of the shallow slot is provided with a recess 16, and the recess 16 is provided with a plug-in interface; the plug-in interface is plug-in matched with the socket 4; the furnace body 1 is provided with a separate excitation release corresponding to the recess 16; the separate excitation release is electrically connected with the control panel 11 circuit; the shallow slot provided at the front end of the furnace body 1 and the ceramic edge guard provided at the outer edge of the hearth 14 can make the overhanging support 13 adhere to the ceramic edge guard after rotating 90°, which can avoid the direct heat transfer of the high temperature in the hearth 14 to the overhanging support 13, so as to prevent the electric shock caused by the unintentional contact of the overhanging support 13 by the staff, on the other hand, the ceramic edge guard facilitates the embedding of the firebrick 121 in the hearth 14, so as to seal and reduce the heat exchange between the hearth 14 and the outside; the socket 4 provided in the furnace body 1 and the separate excitation release, when the socket 4 is completely inserted into the plug-in interface, the separate excitation release is de-energized, and the control panel 11 can close the start of the resistance wire 15; when the socket 4 is separated from the plug-in interface or not completely inserted, the separate excitation release is energized, and at this time the control panel 11 cannot start the resistance wire 15 to heat, when the socket 4 is completely inserted into the plug-in interface, the corresponding state of the furnace door 12 is closed, at this time the resistance wire 15 can work, and when the socket 4 is not completely inserted into the plug-in interface, the corresponding state of the furnace door 12 is opened or not completely closed, at this time the resistance wire 15 cannot work, so as to avoid the electric shock of the operator and the heat overflow in the hearth 14 in the process of taking and placing the crucible.

[0043] Referring to Figure 1 As shown, as an embodiment of the present application, the socket 4 is fixedly connected with a plug inside, and the plug is plug-in matched with the plug-in interface; the socket 4 is fixedly connected with a spring rod 41 inside, and the spring rod 41 is movably matched with the recess 16; under the action of the spring rod 41 without external force acting on the socket 4, the socket 4 will be separated from the plug-in interface, at this time the separate excitation release is energized, and the control panel 11 cannot control the start of the resistance wire 15, and when the external force acts on the socket 4, the external force offsets the elastic force of the spring rod 41, which will extrude the socket 4 to be completely inserted into the plug-in interface, at this time the separate excitation release is de-energized, and the control panel 11 can control the start of the resistance wire 15, so as to realize the heating of the crucible in the hearth 14.

[0044] Referring to Figure 2As shown, as an embodiment of the present application, the inner side of the furnace door 12 is fixed with a stop block 122; the stop block 122 corresponds to the socket 4; the stop block 122 is arranged on the inner side of the furnace door 12, and the action cooperation between the socket 4 and the plug-in interface is related to the opening and closing state of the furnace door 12; when the furnace door 12 is opened, the socket 4 is not subjected to external force, and under the action of the spring rod 41, the socket 4 is separated from the plug-in interface; at this time, the auxiliary release is energized, and the control panel 11 cannot control the starting of the resistance wire 15; and when the furnace door 12 is closed, the socket 4 is pressed inward by the stop block 122 on the inner side of the furnace door 12 and is completely plugged into the plug-in interface; at this time, the auxiliary release is de-energized, and the control panel 11 can control the starting of the resistance wire 15.

[0045] A method for using a tungsten-molybdenum high-temperature test furnace, comprising the following steps:

[0046] S1: rotate the suspended support 13 to an angle greater than 90° with the furnace door 12, and then separate the furnace door 12 from the suspended support 13;

[0047] S2: adjust the opening angle of the furnace door 12 and the furnace body 1 to 90°, and then rotate the suspended support 13 to be attached to the furnace body 1;

[0048] S3: place the experimental product in the crucible and place the whole on the end of the clamp 2;

[0049] S4: push the clamp 2 to send the crucible to the center of the furnace chamber 14;

[0050] S5: hold the tail of the clamp 2, and the crucible is naturally vertical in the center of the furnace chamber 14;

[0051] S6: keep the tail of the clamp 2 held tightly until the end of the clamp 2 is separated from the crucible, and then retract the clamp 2;

[0052] S7: reversely rotate the suspended support 13 to an angle greater than 90° with the furnace body 1, and keep the suspended support 13 stationary;

[0053] S8: reversely rotate the furnace door 12 until the furnace door 12 is attached to the furnace body 1, release the suspended support 13, and make the suspended support 13 and the furnace door 12 be in clamping cooperation;

[0054] S9: control the resistance wire 15 in the furnace chamber 14 by the control panel 11 to heat the crucible;

[0055] S10: when the heating is completed, repeat S1-S2, hold the clamp 2 to send it to the center of the furnace chamber 14, release the tail of the clamp 2 after contacting the crucible, clamp the crucible with the clamp 2, reversely retract the clamp 2, and take out the crucible on the suspended support 13.

[0056] As an embodiment of the present application, in the process of separating the furnace door 12 from the furnace body 1 in S1 and S2, the abutting block 122 is separated from the socket 4, the socket 4 is separated from the plug interface under the action of the spring rod 41, at this time the circuit controlled by the control panel 11 is powered off, and the resistance wire 15 cannot be started.

[0057] As an embodiment of the present application, in S3, S4 and S5, the experimental product is placed in the crucible, which can be placed at the end of the clamp 2 together, and is supported by the suspended bracket 13, the clamp 2 is pushed to the center of the hearth 14 together with the crucible by pushing the clamp 2 to move on the suspended bracket 13.

[0058] Working principle: in order to keep the furnace 1 heating process in the hearth 14 heat exchange efficiency is reduced, concentrated heat to realize the rapid heating of the experimental product in the crucible, need to close the furnace door 12 and furnace 1 closely connected, in the furnace door 12 closed, the use of firebrick 121 and hearth 14 cooperation, can be closed hearth 14, thereby reducing the hearth 14 and the outside heat exchange efficiency, concentrated heat to facilitate the heating of the experimental product, the use of suspension bracket 13 on the side of the clamping block 132 of the branch arm 131, can be closed in the furnace door 12, on the furnace door 12 for limiting, make it closely connected with the furnace 1, in the opening furnace door 12 placed crucible, artificial rotation of the suspension bracket 13, make the clamping block 132 and the furnace door 12 separate, at this time open the furnace door 12, and rotate the suspension bracket 13 again, make it rotate to one side and the furnace 1 paste, at this time the surface of the suspension bracket 13 and the inner surface of the hearth 14 flush, the crucible is placed on the clamp 2, and then through the sliding clamp 2, make the crucible move to the center position of the hearth 14, and then release the clamp 2, so that the crucible can be naturally standing in the center of the hearth 14, complete the placement of the crucible and experimental product, then rotate the suspension bracket 13 again, and rotate the furnace door 12 synchronously, so that the furnace door 12 is closed, the use of the clamping block 132 on the side of the branch arm 131 of the suspension bracket 13, again realize the restriction of the furnace door 12, make the furnace door 12 and the furnace 1 closely connected, through the setting of the suspension bracket 13, the sample loading and taking and into the hearth 14 closely connected, shorten the time of the crucible into the hearth 14 and take out, prolong the service life of the electric furnace, at the same time, after the furnace door 12 is closed, the suspension bracket 13 can be used to limit it, which can facilitate the opening and closing of the furnace door 12, wherein the suspension bracket 13 and the furnace 1 can be connected through the hinge 3 and the spring leaf to realize the movement, and the spring leaf has two states, one state can limit the suspension bracket 13 and the front end side wall of the furnace 1 to be arranged at 90°, and the other state can limit the suspension bracket 13 and the front end side wall of the furnace 1 to be arranged at 180° or 0°; in detail, when the suspension bracket 13 and the front end side wall of the furnace 1 are arranged at 180° or 0°, the clamp 2 is placed on the suspension bracket 13 at this time, the crucible containing the experimental product is placed on the clamp 2, and the clamp 2 is pushed forward into the hearth 14. Because the surface of the suspension bracket 13 is flush with the inner surface of the hearth 14, the clamp 2 can be pushed into the hearth 14 with little resistance. When the clamp 2 moves to the limit, the crucible is just located at the center of the hearth 14. By releasing the tail of the clamp 2, the crucible at the end of the first clamp arm 21 and the second clamp arm 22 can be separated from the clamp 2. Then, the clamp 2 is moved out of the hearth 14 in the opposite direction, and the suspension bracket 13 is rotated to be arranged at 90° with the front end side wall of the furnace 1. Then, the furnace door 12 is rotated to be attached to the surface of the furnace 1. At this time, the suspension bracket 13 is released, and the clamping block 132 can limit the furnace door 12;

[0059] Meanwhile, by virtue of the shallow groove arranged at the front end of the furnace body 1 and the ceramic guard arranged at the outer edge of the hearth 14, the overhanging support 13 can be attached to the ceramic guard after being rotated by 90°, which can prevent the high temperature in the hearth 14 from being directly transferred to the overhanging support 13, so as to avoid the electric shock caused by the unintentional contact of the overhanging support 13 by the staff. In addition, the ceramic guard can facilitate the insertion of the fireproof bricks 121 on the inner side of the furnace door 12 into the hearth 14, so as to seal the hearth 14 and reduce the heat exchange between the hearth 14 and the outside. The socket 4 arranged on the inner side of the furnace body 1 and the split excitation release device can be powered off when the abutting block 122 extrudes the socket 4 to be completely inserted into the plug-in interface, so that the control panel 11 can be closed to start the heating of the resistance wire 15. When the abutting block 122 does not extrude the socket 4, the socket 4 is separated from the plug-in interface or is not completely inserted into the plug-in interface, the split excitation release device is powered on, so that the control panel 11 cannot start the heating of the resistance wire 15. When the socket 4 is completely inserted into the plug-in interface, the furnace door 12 is closed, and the resistance wire 15 can work at this time. When the socket 4 is not completely inserted into the plug-in interface, the furnace door 12 is opened or not completely closed, and the resistance wire 15 cannot work at this time, so as to avoid the electric shock of the operator and the heat overflow in the hearth 14 during the process of taking and placing the crucible.

[0060] Obviously, the above embodiments are merely examples for clearly illustrating the present application and are not intended to limit the present application. Based on the above description, other different forms of changes or modifications can be made by those skilled in the art. Here, all the embodiments are not required to be enumerated, and the obvious changes or modifications derived therefrom are still within the protection scope of the present application.

Claims

1. A tungsten-molybdenum high temperature test furnace characterized by: Including furnace body (1), the bottom of the furnace body (1) is equipped with base, and the front end side wall of base is equipped with control panel (11), the front end side wall of the furnace body (1) is hinged with furnace door (12) through hinge (3), the furnace body (1) is internally provided with hearth (14), and the inboard of hearth (14) is equipped with resistance wire (15), wherein hearth (14) is provided as a cube or cuboid structure, the resistance wire (15) is provided on the other several faces except the bottom face in hearth (14), and the resistance wire (15) is tungsten wire or molybdenum wire material, the side wall of furnace door (12) close to hearth (14) is fixedly connected with firebrick (121), the side wall of the furnace body (1) away from furnace door (12) is hinged with overhanging support (13) through hinge (3), and the overhanging support (13) is slidably connected with clamp (2), one end of the overhanging support (13) is provided with support arm (131), and the support arm (131) is hinged on the side wall of the furnace body (1) away from furnace door (12) through hinge (3), the side wall of the support arm (131) close to hearth (14) is fixedly connected with clamping block (132), and the clamping block (132) is clamped with the side surface of the furnace body (1) adjacent to furnace door (12), and the upper surface of the overhanging support (13) is flush with the lower surface of hearth (14).

2. The tungsten-molybdenum high temperature test furnace according to claim 1, characterized in that: The clamp (2) includes first clamping arm (21), second clamping arm (22) and pin shaft (24), the first clamping arm (21) and the second clamping arm (22) are hinged through the pin shaft (24), the pin shaft (24) is arranged in the middle of the first clamping arm (21) and the second clamping arm (22), the bottom of the pin shaft (24) is fixedly connected with the sliding block (25), and the pin shaft (24) is slidably connected in the overhanging support (13) through the sliding block (25).

3. The tungsten-molybdenum high temperature test furnace according to claim 2, characterized in that: The tail outside of the first clamping arm (21) and the second clamping arm (22) is provided with rubber sleeve, the first clamping arm (21) and the second clamping arm (22) are metal material, the tail inside of the first clamping arm (21) and the second clamping arm (22) is fixedly connected with the first spring (23), and the end of the first clamping arm (21) is fixedly connected with the bottom sealing plate (26).

4. The tungsten-molybdenum high temperature test furnace according to claim 3, characterized in that: The inside of the overhanging support (13) is provided with movable groove (134), the surface of the overhanging support (13) is provided with sliding groove (133), the sliding groove (133) is communicated with the movable groove (134), the sliding block (25) is slidably connected in the movable groove (134), and the pin shaft (24) is slidably connected in the sliding groove (133).

5. The tungsten-molybdenum high temperature test furnace according to claim 4, characterized in that: The front end side wall of the furnace body (1) is provided with shallow groove, the ceramic edge protection is fixedly connected in the shallow groove middle part corresponding to hearth (14) outer edge position, the recess (16) is provided in one side bottom of the shallow groove, and the plug-in interface is arranged in the recess (16), the plug-in interface is plug-in matched with the socket (4), the furnace body (1) is provided with the separate excitation release in the corresponding recess (16), and the separate excitation release is electrically connected with the control panel (11) circuit.

6. The tungsten-molybdenum high temperature test furnace according to claim 5, characterized in that: The plug is fixedly connected to the inside of the socket (4), and the plug is plug-in matched with the plug-in interface, the spring rod (41) is fixedly connected to the inside of the socket (4), and the spring rod (41) is movably matched with the recess (16).

7. The tungsten-molybdenum high temperature test furnace according to claim 6, characterized in that: The inner side of the furnace door (12) is fixed with a block (122); the block (122) corresponds to the socket (4).

8. A method of using a tungsten-molybdenum high temperature test furnace, suitable for use in a tungsten-molybdenum high temperature test furnace according to any one of claims 1 to 7, characterized in that: It comprises the following steps: S1: rotate the suspended support (13) to an angle greater than 90° with the furnace door (12), and then separate the furnace door (12) from the suspended support (13); S2: adjust the opening angle of the furnace door (12) and the furnace body (1) to 90°, and then rotate the suspended support (13) to adhere to the furnace body (1); S3: place the experimental product in the crucible and place it on the end of the clamp (2) as a whole; S4: push the clamp (2) to drive the crucible into the center of the furnace (14); S5: hold the tail of the clamp (2), and the crucible naturally stands vertically in the center of the furnace (14); S6: keep the tail of the clamp (2) tightly held until the end of the clamp (2) is separated from the crucible, and the clamp (2) is retracted; S7: reversely rotate the suspended support (13) to an angle greater than 90° with the furnace body (1), and keep the suspended support (13) stationary; S8: reversely rotate the furnace door (12) until the furnace door (12) adheres to the furnace body (1), loosen the suspended support (13), and make the suspended support (13) and the furnace door (12) fit together; S9: control the resistance wire (15) in the furnace (14) by the control panel (11) to heat the crucible; S10: after heating, repeat S1-S2, hold the clamp (2) to send it into the center of the furnace (14), loosen the tail of the clamp (2) after contacting the crucible, clamp the crucible with the clamp (2), and then reversely retract the clamp (2) to take out the crucible on the suspended support (13).

9. The method of using a tungsten-molybdenum high temperature test furnace of claim 8, wherein: In S1 and S2, during the separation of the furnace door (12) and the furnace body (1), the block (122) is separated from the socket (4), the socket (4) is separated from the plug interface under the action of the spring rod (41), and at this time the circuit controlled by the control panel (11) is powered off, and the resistance wire (15) cannot be started.

10. The method of using the tungsten-molybdenum high-temperature test furnace according to claim 9, characterized in that: In S3, S4 and S5, the experimental product is placed in the crucible, which can be placed on the end of the clamp (2) as a whole, and is supported by the suspended support (13), and the clamp (2) and the crucible are pushed to the center of the furnace (14) by pushing the clamp (2) on the suspended support (13).

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