JP7325196B2 - Metal melting and melting state confirmation system - Google Patents

Description

TECHNICAL FIELD Embodiments of the present invention relate to a system for checking the melting and melting state of metal charged into a melting furnace.

Beryllium-copper alloys are widely used as materials for automobile parts, electrical parts, or electronic parts due to their high strength and high electrical conductivity. For example, beryllium-copper alloys are used in connectors, switches, relays, wires, and the like. This beryllium-copper alloy is produced by putting beryllium oxide into a melting furnace together with a reducing agent such as carbon and refining it, then putting beryllium and copper into a melting furnace to melt and melt, and then casting, homogenizing, and hot working. It is manufactured through working, cold working, solution treatment, aging heat treatment, and finishing cold working in this order.

In the refining process of beryllium and the manufacturing process of alloys, these metal materials are put into a melting furnace, heated with a burner, or run with an electric current to utilize Joule heat to melt and dissolve the put-in metal materials. Typically, an operator removes the cover of the melting furnace or opens a small inlet provided in the cover, and manually carries and charges the metal material. In addition, the molten state of beryllium can be determined from the viewpoint of color and viscosity based on a photograph by manually inserting a rod into a melting furnace and taking a photograph of the beryllium adhering to the rod.

JP 2015-190708 A

Beryllium is highly toxic. Therefore, inhalation of beryllium powder or beryllium-containing vapor may pose serious health hazards to workers. In addition, the melting furnace is heated to, for example, around 2200° C., and there is a risk of burns to workers. Therefore, the workers change into protective clothing and approach the melting furnace. In addition, the working time in the vicinity of the melting furnace was limited to a short time such as 15 minutes. Therefore, the confirmation efficiency of the melted and dissolved states was very poor.

Melting of metals using a melting furnace is not limited to beryllium or copper, but is used for melting of various metals. And in the melting process of other metals, most notably beryllium, inhalation of metal powders and vapors and exposure to high temperatures is a health concern.

In order to solve the above-described problems, the present embodiment aims to provide a metal melting and dissolution confirmation system that can efficiently confirm the melting and dissolution conditions while reducing the risk of health hazards to workers.

In order to achieve the above object, the metal melting and melting state confirmation system of the present embodiment is a metal melting and melting state confirmation system for confirming the melting and melting state of metal in the melting furnace. A rod for inserting into the metal to be thrown in, a stirring driving part for moving the rod while it is inserted into the metal, and a torque generated in the rod according to stirring of the metal is detected. and a torque sensor for

1 is a schematic diagram showing the configuration of a melting and dissolving device having a rod; FIG. FIG. 2 is a schematic diagram showing the configuration of a melting and dissolving device having a rod moving device; 1 is a schematic diagram showing the configuration of a melting and dissolving apparatus having a camera and a radiation thermometer; FIG. 1 is a schematic diagram showing the configuration of a melting and dissolving device having pliers and a box; FIG. FIG. 2 is a schematic diagram showing the configuration of a melting and dissolving device having an open lid and a material holder; 1 is a schematic diagram showing the configuration of a melting and dissolving device with a sampling tube; FIG.

A melting and dissolving apparatus 1 according to the present embodiment and a metal melting and melting state confirmation system 3 provided in the melting and dissolving apparatus 1 will be described in detail with reference to the drawings. A melting and dissolving apparatus 1 shown in FIG. 1 melts and melts a metal material while monitoring the degree of melting and dissolution of the metal material. This melting and dissolving apparatus 1 comprises a melting furnace 2 and a metal melting and melting state confirmation system 3 . The melting furnace 2 is charged with a metal material, heats the metal material, and melts and dissolves the metal material. The metal melting and dissolution state confirmation system 3 confirms the degree of melting and dissolution while the metal material is sealed in the melting furnace 2 without taking out the metal material from the melting furnace 2 . Specifically, the metal melting and dissolution confirmation system 3 agitates the charged metal 28 in the melting furnace 2 and confirms the viscosity of the charged metal 28 based on the resistance received from the charged metal 28 during stirring.

The metal material to be put into the melting furnace 2 is not particularly limited. Those that are dangerous to approach are preferred. For example, a mixture of beryllium and copper, beryllium oxide also called beryllia, beryllium, or the like is suitable as the metal material. Beryllium oxide is introduced into the melting furnace 2 together with a reducing agent such as carbon, and is reduced in the melting furnace 2 to become metallic beryllium. Metal beryllium is dissolved in molten copper obtained by melting a copper nugget, thereby obtaining a molten alloy. It should be noted that beryllium oxide may be melted in the molten metal during melting and dissolution.

The method of heating the metal material by the melting furnace 2 is not particularly limited as long as it is known. For example, the melting furnace 2 is an induction electric furnace, which generates a secondary current in the metal material and uses Joule heat to melt and dissolve the metal material. The melting furnace 2 has a melting point higher than the temperature inside the furnace and is made of a material that hardly reacts with the metal material inside at the temperature inside the furnace. As an example, the melting furnace 2 is made of tungsten or ceramic when charging with beryllium oxide.

The melting furnace 2 includes a crucible 21 which is a cauldron-shaped container with an upper opening and a bottom, and a large lid 22 for sealing the opening of the crucible 21 . A heat insulating material 23 for suppressing heat transfer from the crucible 21 is interposed between the crucible 21 and the large lid 22 . The large lid 22 is removed when the metal material is first introduced.

A material input port 24 and a tool insertion port 25 are provided through the large lid 22 . The material input port 24 and the tool insertion port 25 pass through the large lid 22, from the inner surface in contact with the inner space of the crucible 21 to the outer surface outside the furnace on the opposite side of the inner surface. It communicates inside and outside. The material input port 24 can be used when additional metal material is input, or when metal material once taken out is input again. The tool insertion port 25 is used by the metal melting and melt confirmation system 3 .

Incidentally, the material input port 24 and the tool insertion port 25 may be common. However, in order to more reliably prevent transpiration of the metal vapor, it is desirable that the diameter of the tool insertion port 25 is smaller than that of the material input port 24, and that the material input port 24 and the tool insertion port 25 are separate. .

The material inlet 24 is sealed with a cap 26 to prevent metal vapor from scattering. The cap 26 has a ring-shaped handle 261 . The cap 26 is pulled out from the large lid 22 by applying force to the handle 261 . A heat insulating material 23 is also interposed in a portion of the contact point between the cap 26 and the crucible 21 that does not contact the inner space of the crucible 21 .

Furnace insulation is provided inside the crucible 21 in order to prevent the cap 26 and a support base 32, which will be described later, from coming into contact with the inner space of the crucible 21 and to prevent the cap 26 and the support base 32 from being directly exposed to high temperatures. A material 27 may be placed. The in-furnace heat insulating material 27 is arranged in the melting furnace 2, is a heat insulating material different from the heat insulating material 23, and is directly exposed to the temperature in the furnace. The in-furnace heat insulating material 27 is arranged so as to block the material inlet 24 and the tool insertion opening 25, and has heat resistance exceeding the in-furnace temperature. For example, the in-furnace insulation 27 is placed inside the material input port 24 and the tool insertion port 25 or in the space above the input metal 28 .

The metal melting and molten state confirmation system 3 has a rod 31 . This rod 31 has a length that allows it to reach deep into the cast metal 28 . The rod 31 is inserted into the charged metal 28 in the melting furnace 2 through the tool insertion port 25 to perform a stirring operation. The stirring motion is regular or irregular rocking, rotating, or a combination thereof.

The rod 31 receives resistance from the input metal 28 during stirring. In the melting and dissolving process of the injected metal 28, the viscosity of the injected metal 28 increases first, so that the resistance increases. depressed. The metal melting and dissolution confirmation system 3 monitors this change in resistance based on the change in torque generated in the rod 31 .

It is desirable that the bar 31 is provided with plate-like fins 311 protruding from the peripheral surface. The resistance force that the rod 31 receives from the fins 311 is clarified. The fins 311 may be arranged along the axis so that the plate surface is parallel to the axis of the rod 31, or may be arranged so that the plate surface crosses the axis of the rod 31 obliquely. . Moreover, the fin 311 is not limited to one, and a plurality of fins 311 may be installed, and the orientations and heights of the plurality of fins 311 may vary.

The rod 31 is installed on a support base 32 installed at the upper end opening of the tool insertion opening 25 . The support base 32 is composed of a plug portion 321 having the same diameter as the tool insertion port 25 and a disc-shaped head portion 322 having a larger diameter than the plug portion 321 . The plug portion 321 is inserted into the tool insertion port 25, and the periphery of the head portion 322 is brought into close contact with the large lid 22, so that the support base 32 is stably installed and metal vapor is prevented from scattering out of the furnace. be.

Further, the support base 32 is provided with a large-diameter hole portion 323 penetrating through the plug portion 321 and the head portion 322 . The rod 31 is fixed to the support base 32 so as to pass through the large-diameter hole 323 . However, the large-diameter hole portion 323 has a larger diameter than the rod 31 and does not hinder the movement of the rod 31 . The top of the head 322 is dug down one step, and a cylindrical seat surface space 324 having a larger diameter than the large diameter hole 323 is formed. On the other hand, a flange 312 having the same diameter as the seat surface space 324 is installed on the rod 31 so as to expand in the radial direction. By fitting the flange 312 into the seat space 324 , the rod 31 is operably inserted into the melting furnace 2 .

In order to operate the rod 31 and to detect the torque generated in the rod 31, the metal melting and melting state confirmation system 3 is provided with a stirring drive section 33 and a torque sensor 34. As shown in FIG. Further, the metal melting and dissolving state confirmation system 3 includes a controller 35 that controls the stirring drive section 33 and a monitoring device 36 that displays the degree of melting and dissolution.

The stirring drive unit 33 moves the rod 31 inside the injection metal 28 . The stirring drive unit 33 is, for example, a rotary motor that rotates the rod 31 about its axis. The stirring drive unit 33 supports the rod 31 so as to be coaxial with the motor shaft, and rotates the rod 31 about its axis. In the case of axial rotation, torque is generated in the rod 31 due to the resistance that the fins 311 receive from the injection metal 28 .

The mode of the stirring motion of the rod 31 is not limited to axial rotation as long as the charged metal 28 can be stirred. For example, the rod 31 is connected at an angle to the motor shaft of the stirring drive unit 33 . At this time, the rod body 31 moves in an arc so as to draw a cone centered on the tip of the motor shaft. Further, the rod body 31 is connected to the motor shaft of the stirring drive unit 33 so that the shaft position is shifted, but the shaft extends in parallel. At this time, the rod body 31 moves so as to draw a column about the motor shaft. Such various agitation motion modes of the rod 31 may also exert X-, Y- and Z-axis, yaw, pitch and roll torques in various Cartesian coordinates.

The stirring drive unit 33 may be a linear motor such as a solenoid motor that advances and retreats in the axial direction. The fins 311 may be arranged so as to have surfaces orthogonal to the axial direction, or arranged so as to have surfaces oblique to the axial direction.

The torque sensor 34 detects torque applied to the rod 31 . That is, the torque sensor 34 is interposed between the stirring drive section 33 and the rod 31 and detects the amount of operation difference such as the phase difference between the stirring drive section 33 and the rod 31 . The torque sensor 34 converts this operation difference amount into torque, generates a signal containing the torque value, and outputs the signal to the monitoring device 36 . A six-axis sensor, for example, is desirable so that it can detect the torque in the directions that can be applied to the rod 31 . The torque sensor 34 can be of any known type, such as rotary type, non-rotating type, strain gauge type, magnetostrictive type, capacitance type, and the like.

The controller 35 is a driver circuit that gives a driving signal such as a pulse signal to the stirring driving section 33 . The monitoring device 36 is a so-called computer and has a monitor 361 to visually display the torque. This monitoring device 36 numerically displays the torque, or displays the torque in chronological order in a graph. Graph display makes it easier to grasp the change process of the viscosity of the injected metal 28, and makes it easier to predict the timing of melting and the completion of melting. Further, the monitoring device 36 may store in advance the torque corresponding to the maximum viscosity immediately before the viscosity is suddenly lost, and display it in a graph.

In such a melting and melting apparatus 1, when the large lid 22 is opened and the metal material is charged, and the crucible 21 is closed with the large lid 22, the rod 31 is inserted from the tool insertion opening 25 until it reaches the charged metal 28, A rod 31 is installed on a support base 32 . Then, an electric current is passed through the charged metal 28 in the furnace to heat the charged metal 28 . The controller 35 intermittently or continuously drives the stirring drive unit 33 at least before the scheduled completion time of melting and dissolution, and moves the rod body 31 within the cast metal 28 to function as a stirring rod.

The torque sensor 34 detects torque generated in the rod 31 and outputs a signal to the monitoring device 36 . A monitoring device 36 displays the results detected by the torque sensor 34 . The operator checks the torque displayed by the monitoring device 36 in a safe area sufficiently distant from the melting furnace 2 . The operator can confirm the degree of melting and dissolution of the input metal 28 from this change in torque.

In this way, the rod 31 is driven by the stirring drive unit 33 and the operator does not manually move the rod 31 near the melting furnace 2 . Moreover, since the torque sensor 34 for detecting the torque generated in the rod 31 is provided, the operator does not grip the rod 31 to feel the torque. In other words, the operator does not need to check the melting and melting state near the melting furnace 2 .

Therefore, workers are not exposed to high temperatures and are not exposed to metal vapor, thereby preventing health hazards to workers. In addition, since the viscosity is obtained mechanically to check the melting and dissolving states, there is no need to rely on the intuition of the operator, and there is no variation in determination of melting and dissolution of the metal, so high-quality molten metal can be obtained. . Furthermore, since there is no preparatory work for confirming the melted and dissolved states, such as putting on and taking off protective clothing, the work for confirming the melted and dissolved states becomes efficient.

The rod 31 may be permanently installed in the large lid 22, or may be installed after the large lid 22 is closed after the metal material is put. The rod 31 may be installed by an operator or may be installed automatically. FIG. 2 is a schematic diagram showing a metal melting and melting state confirmation system 3 that automatically installs a rod 31. As shown in FIG.

As shown in FIG. 2 , a horizontal frame 41 is installed across the melting furnace 2 just above the tool insertion opening 25 . A lifting ball screw mechanism 42 extending toward the tool insertion opening 25 is installed on the horizontal frame 41 . A slider 421 is installed in the lifting ball screw mechanism 42. The slider 421 is a bracket for fixing the tool 37 integrally constructed by stacking the rod 31, the torque sensor 34 and the stirring drive unit 33 in a row. Also serves as The elevating ball screw mechanism 42 is connected to the controller 35 by a signal line, and lowers the tool 37 toward the tool insertion opening 25 when it receives a drive signal indicating descent, and moves the tool 37 when it receives a drive signal indicating descent. Pull up from the tool insertion opening 25 .

That is, the horizontal frame 41 and the lifting ball screw mechanism 42 are an example of the moving device 4 for lifting the rod 31 with respect to the melting furnace 2 . With this moving device 4, the work of inserting the rod 31 into the injection metal 28 can also be performed in a state in which the worker is evacuated. Therefore, when the worker installs the rod 31, it is possible to prevent the powder of the metal material from being blown up and the worker to inhale the powder and suffer from health hazards.

Here, in some cases, fine particles of the metal material are also melted and melted until the grain boundaries become invisible. Viscosity monitoring can confirm that most of the injected metal 28 is melted and dissolved. should also be used together. In addition, when the reduction reaction of beryllium oxide by carbon is in progress and unreacted carbon remains, phase separation occurs when the temperature of the molten beryllium-copper alloy decreases and solidifies, separating the metal and the oxide. . Therefore, in order to confirm melting and dissolution more reliably, part of the input metal 28 may be pulled up and solidified to observe the presence or absence of phase separation.

That is, as shown in FIG. 3, the metal melting and molten state confirmation system 3 may be provided with a moving device 4 for the tool 37 and further with a camera 51 and a radiation thermometer 52 . The camera 51 is desirably a thermographic camera capable of capturing the melting point of metal or higher. The radiation thermometer 52 measures the intensity of infrared rays and visible rays radiated from the object to be measured. The camera 51 and the radiation thermometer 52 are installed so as to include the space S above the melting furnace 2 on the axis of the tool insertion port 25 . The camera 51 and radiation thermometer 52 are connected to the monitoring device 36 via signal lines. The video signal obtained by the camera 51 and the measurement signal of the radiation thermometer 52 are output to the monitoring device 36 and displayed on the monitor 361 .

As shown in FIG. 3, the moving device 4 pulls out the rod 31 after the torque detected by the torque sensor 34 shows a sudden decrease. That is, the monitoring device 36 detects a rapid decrease in torque. For example, the torque change rate is calculated, and if the torque change rate is equal to or greater than a predetermined value, it is determined that the torque has suddenly decreased. Then, the monitoring device 3 outputs an instruction signal for pulling up the tool 37 to the controller 35 when the torque suddenly decreases. Upon receiving the pull-up signal, the controller 35 drives the moving device 4 until the rod 31 is removed from the melting furnace 2 .

An operating unit 362 such as a touch panel, keyboard, or mouse may be connected to the monitoring device 36 . Then, when the operator recognizes a sudden decrease in torque on the monitor 361 and operates the operation unit 362, the monitoring device 36 may output a pull-up instruction signal in response to this operation.

When the rod 31 is inserted into the charged metal 28 and pulled out from the melting furnace 2, the peripheral surface of the rod 31 is covered with metal deposits 313. - 特許庁Metal deposit 313 originates from the metal material of input metal 28 . The rod 31 is pulled up until the metal deposit 313 enters the space S. The camera 51 images the metal deposit 313 and the radiation thermometer 52 measures the temperature of the metal deposit 313 . That is, at this point rod 31 functions as a metal extraction rod within input metal 28 .

The operator checks the state of the metal deposits 313 and the temperature of the metal deposits 313 through the monitor 361 of the monitoring device 36 . Specifically, it is checked whether large particles remain in the metal deposit 313, whether traces of powder remain, and whether the reducing agent injected together with the metal material remains. In addition, it is confirmed whether or not all of the metal deposits 313 emit heat equal to or higher than the melting point. As a result, the detailed state of the input metal 28 can also be grasped through the metal deposit 313 . Therefore, it is possible to safely check the degree of melting and dissolution of the metal material, and to carry out the work of checking the melting and dissolution states with higher accuracy, so that high-quality molten metal can be produced.

In order to confirm the melting and dissolution state with higher accuracy, the metal deposit 313 may be sampled and analyzed in detail. That is, the system 3 for confirming the state of metal melting and dissolution can be equipped with a configuration for collecting the metal deposits 313 adhering to the rod 31 .

As shown in FIG. 4, the system 3 for confirming the metal melting and molten state includes a parallel movement ball screw mechanism 43 on a lateral frame 41 . The translation ball screw mechanism 43 extends along the horizontal frame 41 . A lifting ball screw mechanism 42 is installed on the slider 431 of the parallel movement ball screw mechanism 43 . The parallel movement ball screw mechanism 43 allows the moving device 4 to move the rod 31 parallel to a region away from the melting furnace 2 in addition to lifting and lowering the rod 31 . Further, this metal melting and melting state confirmation system 3 is equipped with pliers 53 and a box body 54 with an upper opening at a position away from the melting furnace 2 . The box 54 is arranged directly below the pliers 53 .

After pulling up the rod 31 from the melting furnace 2 , the moving device 4 positions the rod 31 on the pliers 53 . The height at which the rod 31 is lifted is the height at which the pliers 53 and the metal deposit 313 are aligned. The pliers 53 grip the rod 31 by narrowing the grip portion. Then, the metal deposit 313 is scraped off by the pliers 53 and falls into the box 54 . Since the box 54 is separated from the melting furnace 2, the operator can safely retrieve the box 54 and analyze the metal deposits 313 inside the box 54 in detail. For example, the metal deposit 313 can be acid treated, and the melted and dissolved states can be determined from the acid treatment results.

The analyzed metal deposits 313 dropped into the box 54 may be returned to the melting furnace 2 after removing the cap 26 of the material inlet 24 . At this time, the moving device 4 can be used so that the operator does not have to approach the melting furnace 2 . That is, as shown in FIG. 5, in addition to the tool 37, the horizontal frame 41 has a moving device 61 with a hook 62 attached thereto, and a moving device 71 with a basket 72 having a shutter 73 that can be opened and closed on the bottom surface. is erected. The hook 62 and the moving device 61 to which the hook 62 is attached serve as the opening lid portion 6 , and the basket 72 and the moving device 71 to which the basket 72 is attached serve as the material holding portion 7 .

The lid-opening part 6 is lifted by hooking the hook 62 on the handle 261 of the cap 26, and the cap 26 is pulled out from the material inlet 24.例文帳に追加Then, the hook 62 is retracted from right above the material inlet 24 to position the material holding portion 7 right above the material inlet 24 . In the cage 72, the metal deposit 313 dropped on the box 54 is put. The material holding part 7 operates the shutter 73 to open the bottom surface. Then, the metal deposits 313 in the basket 72 fall into the melting furnace 2 through the material inlet 24 . After the metal deposit 313 is returned into the melting furnace 2, the material holding part 7 is retracted from directly above the material inlet 24, the open lid part 6 is returned to directly above the material inlet 24, and the cap 26 is closed. Down to 24.

It should be noted that only one moving device 4 may be installed on the horizontal frame 41, and the tool 37, the hook 62 and the cage 72 may be replaced. Since the melting process has sufficient time, the moving device 4 can be moved to a position away from the melting furnace 2 and the operator can safely replace the tool 37, hook 62 and basket 72.

Part of the detailed analysis may be performed while the metal deposit 313 remains attached to the rod 31 without being peeled off. For example, when the metal vapor that evaporates from the metal deposit 313 is analyzed using the principle of chromatography, it is not necessary to remove the metal deposit 313 from the rod 31 .

As shown in FIG. 6 , this metal melting and melting state confirmation system 3 has a sampling pipe 55 at a position remote from the melting furnace 2 . The collection tube 55 has a top opening and a bottom, and has a diameter and length that can accommodate the area where the metal deposits 313 are attached. A branch port 551 is opened in the middle of the body. A hose is connected to the branch port 551, and the hose is connected to the gas chromatograph 100, which is an external device.

After pulling up the rod 31 from the melting furnace 2 , the moving device 4 positions the rod 31 right above the sampling tube 55 and lowers the rod 31 to insert it into the sampling tube 55 . With the rod 31 inserted into the sampling tube 55 , wait until the gas from the metal deposit 313 reaches the gas chromatograph 100 . Once the metal vapor reaches the gas chromatograph 100, it can be analyzed for molten and dissolved states using the principles of gas chromatography.

As described above, the metal melting and molten state confirmation system 3 is provided with the rod 31 to be inserted into the input metal 28 in the melting furnace 2 . By providing the stirring drive unit 33, the rod 31 is stirred while being inserted into the input metal 28, and by providing the torque sensor 34, the torque generated in the rod 31 according to the stirring of the input metal 28 is detected. to detect As a result, the degree of melting and dissolution can be checked while being sealed in the melting furnace 2, so that the safety of the operator is ensured.

By attaching the fins 311 protruding from the peripheral surface of the rod 31 to the rod 31, the torque change becomes clearer and the degree of melting and dissolution becomes easier to understand. Therefore, the quality of molten metal can be improved. When the fins 311 are attached and the pliers 53 are provided, the pliers 53 should be grasped at a position where the metal deposits 313 are present and not in contact with the fins 311, and the metal deposits 313 should be peeled off. good.

Further, a moving device 4 for moving the rod 31 up and down toward the melting furnace 2 may be provided. This eliminates the need for the operator to go to the melting furnace 2 to prepare for melting and checking the melted state. Therefore, it is possible to avoid a situation in which the metal powder is sucked in, and to ensure the safety of the operator even in the preparation stage for confirming the melting and dissolution states.

Further, a camera 51 capable of imaging a high-temperature substance such as a thermography, and a moving device 4 for moving the rod 31 up and down inside and outside the melting furnace 2 may be further provided. After inserting the rod 31 into the melting furnace 2 , the moving device 4 lifts the rod 31 out of the melting furnace 2 . The camera 51 images the metal deposits 313 adhering to the rod 31 after the rod 31 is pulled up from the melting furnace 2 . As a result, the degree of melting and dissolution can be confirmed at the level of fine particles, and the quality of the molten metal can be further improved while ensuring the safety of workers.

Further, a radiation thermometer 52 and a moving device 4 for moving the rod 31 up and down inside and outside the melting furnace 2 may be further provided. After inserting the rod 31 into the melting furnace 2 , the moving device 4 lifts the rod 31 out of the melting furnace 2 . Radiation thermometer 52 measures the temperature of metal deposits 313 adhering to rod 31 after rod 31 is pulled up from melting furnace 2 . As a result, it is possible to confirm whether or not all the thrown metal materials have reached the melting temperature, and it is possible to further improve the quality of the molten metal while ensuring the safety of workers.

In addition, a pair of pliers 53 capable of sandwiching the rod 31, a box 54 having an upper surface opening disposed below the pliers 53, and the rod 31 can be moved up and down inside and outside the melting furnace 2, and a position different from the melting furnace 2. For example, a moving device 4 for parallel movement in a direction orthogonal to the elevation direction may be further provided. After inserting the rod 31 into the melting furnace 2 , the moving device 4 lifts the rod 31 out of the melting furnace 2 and moves the rod 31 to the position where the pliers 53 are arranged. Pliers 53 pinch the area of metal deposit 313 of rod 31 and peel off metal deposit 313 . The box 54 receives the metal deposits 313 that have fallen off due to the pinching of the pliers 53 . By moving the metal deposits 313 in the box 54 to a further detailed analysis process, the melting and dissolution states can be more accurately known, and the quality of the molten metal can be further improved while ensuring the safety of the operator. be able to.

In addition, the sampling pipe 55 having an upper opening, a bottomed and a branch port 551, which is connected to the gas chromatograph 100 via a hose to the branch port 551, and the rod 31 are moved up and down in and out of the melting furnace 2, A position different from the melting furnace 2, for example, a moving device 4 for parallel movement in a direction orthogonal to the elevation direction may be further provided. After inserting the rod 31 into the melting furnace 2 , the moving device 4 lifts the rod 31 out of the melting furnace 2 and inserts the rod 31 into the sampling tube 55 . As a result, it is possible to more accurately know the molten metal and the molten state, and it is possible to further improve the quality of the molten metal while ensuring the safety of the operator.

The camera 51, the radiation thermometer 52, the pair of pliers 53 and box 54, and the sampling tube 55 connected to the gas chromatograph 100 are optional. , one or more of these means can be used in combination.

Alternatively, a hook for removing the cap 26 may be attached to the moving device 4 , and a basket for throwing the metal powder into the melting furnace 2 may be attached to the moving device 4 . As a result, even in the step of throwing the metal material into the melting furnace 2, the operator does not need to approach the melting furnace 2, and the situation of inhaling the metal powder can be avoided.

In addition, the various configurations of the melting and dissolving apparatus 1 may be separately provided with dust-proof and heat-resistant measures. For example, a jacket may be attached to the mobile device 4 and the camera 51, and the mobile device 4 may be provided with a cooling function. In addition, although the ball screw mechanism is used as the moving mechanism of the moving devices 4, 61 and 71, it is not limited to this, and other known driving mechanisms such as a linear motor mechanism and a belt driving mechanism can be used. .

As described above, the embodiment according to the present invention has been described in this specification, but the embodiment is presented as an example and is not intended to limit the scope of the invention. The above embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. The embodiments and modifications thereof are included in the scope and spirit of the invention, as well as the scope of the invention described in the claims and equivalents thereof.

1 Melting and Dissolving Apparatus 2 Melting Furnace 21 Crucible 22 Large Lid 23 Heat Insulating Material 24 Material Input Port 25 Tool Insertion Port 26 Cap 261 Handle 27 Furnace Heat Insulating Material 28 Input Metal 3 Metal Melting and Melting State Confirmation System 31 Rod 311 Fin 312 Flange 313 Metal deposit 32 Support base 321 Plug 322 Head 323 Large-diameter hole 324 Seat surface space 33 Stirring drive unit 34 Torque sensor 35 Controller 36 Monitoring device 361 Monitor 362 Operation unit 37 Tool 4 Moving device 41 Horizontal frame 42 Lifting Ball screw mechanism 421 for parallel movement Slider 43 Ball screw mechanism for parallel movement 431 Slider 51 Camera 52 Radiation thermometer 53 Pliers 54 Box 55 Sampling tube 551 Branch opening 6 Lid opening 61 Moving device 62 Hook 7 Material holding part 71 Moving device 72 Basket 73 Shutter 100 gas chromatograph

Claims (7)

A metal melting and melting state confirmation system for checking the melting and melting state of metal in a melting furnace,
a rod for inserting into the metal introduced into the melting furnace;
a stirring drive unit for moving the rod while being inserted into the metal;
a torque sensor for detecting torque generated in the rod in response to stirring of the metal;
A metal melting and melt state confirmation system comprising: A moving device for moving the rod up and down inside and outside the melting furnace,
The metal melting and molten state confirmation system according to claim 1. a camera capable of imaging a high-temperature substance;
a moving device for moving the rod into and out of the melting furnace;
further comprising
the moving device, after inserting the rod into the melting furnace, lifts the rod out of the melting furnace;
The camera captures an image of the metal adhering to the rod after the rod is pulled up from the melting furnace.
The metal melting and molten state confirmation system according to claim 1. a radiation thermometer;
a moving device for moving the rod into and out of the melting furnace;
further comprising
the moving device, after inserting the rod into the melting furnace, lifts the rod out of the melting furnace;
The radiation thermometer measures the temperature of the metal adhering to the rod after the rod is pulled up from the melting furnace.
The metal melting and molten state confirmation system according to claim 1. pliers capable of sandwiching the rod;
a box with an upper opening located below the pliers;
a moving device for moving the rod into and out of the melting furnace and moving it to a position away from the melting furnace;
further comprising
The moving device, after inserting the rod into the melting furnace, lifts the rod out of the melting furnace, and further moves the rod to an arrangement position of the pliers,
The pliers pinch a region of the rod to which the metal is attached,
The box receives the metal that has fallen off due to the nipping of the pliers,
The metal melting and molten state confirmation system according to claim 1. a sampling tube having an upper opening, a bottomed opening and a branch port, the branch port being connected to the gas chromatograph via a hose;
a moving device for moving the rod into and out of the melting furnace and moving it to a position away from the melting furnace;
further comprising
The moving device inserts the rod into the melting furnace, pulls the rod out of the melting furnace, and inserts the rod into the extraction tube.
The metal melting and molten state confirmation system according to claim 1. The rod body has fins protruding from the rod peripheral surface,
7. The metal melting and molten state confirmation system according to any one of claims 1 to 6.

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