Low melting point alloy melting furnace

Abstract

The application discloses a low-melting-point alloy melting furnace, which comprises a furnace body and a separable inner container, a heat-resistant base is laid at the bottom of the inner container, a groove is arranged on the heat-resistant base, an electric heating rod is supported on the upper surface of the heat-resistant base, and an alloy collecting groove is formed between the edge of the heat-resistant base and the wall of the inner container. The application adopts the separable structure of the inner container and the furnace body, shortens the maintenance period of the melting furnace and is convenient and efficient. The heat-resistant base with the groove structure separates and collects the heating element and the alloy melt, solves the problem that the service life of the electric heating rod is too short and the electric heating rod is frequently burnt out, and simultaneously, the alloy in the molten state can be smoothly led out of the furnace body and collected by using the live joint structure device, which is convenient and fast, greatly saves the operation of pouring the furnace body, and avoids the hidden trouble problem that the alloy melt is accumulated in the melting furnace for a long time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of alloy recovery device for aero-engine blade processing, more particularly to a low-melting-point alloy melting furnace. BACKGROUND

[0002] Currently, a special processing technology in the aero-engine blade processing process needs to use low-melting-point alloys such as tin-bismuth alloys in a molten state for casting. During the casting process, part of the alloy will seep into each pore of the blade. After the low-melting-point alloy is cast, it will solidify into a solid state and remain in each pore after a few minutes of cooling. At the present stage, the method for taking out the alloy from each pore is to put the engine blade containing the low-melting-point alloy into the alloy furnace body containing No. 46 machine oil, melt the low-melting-point alloy by heating, and then the low-melting-point alloy will fall off from the blade into the No. 46 machine oil to realize the separation of the alloy on the blade.

[0003] The existing alloy melting furnace is a whole structure melting furnace. Because the low-melting-point alloy in a molten state has strong corrosiveness, the long-term accumulation of the alloy melt will cause corrosion to the inner wall of the melting furnace. After a period of time, the inner wall will become thin, and even perforated and leak oil. Once the oil leaks, it can only be filled, and if the gap is too large, it cannot be filled, and the whole furnace can only be scrapped, increasing the production cost and time cost. In 201720495647.5 an inner liner type melting furnace discloses an inner liner type melting furnace, which comprises a furnace body, and the furnace body is provided with a corresponding furnace door 8. The cross-sectional shape of the inner cavity of the furnace body 12 is square, and the longitudinal cross-sectional shape of the inner cavity is circular. The furnace body 12 comprises six layers from outside to inside in turn: a steel framework outer shell layer 1, a heat preservation layer 2 composed of perlite heat preservation plates, an outer isolation layer 3 composed of heat preservation bricks, a closed type layer 4, an inner isolation layer 5 composed of refractory bricks, and an inner liner layer 6 composed of high-temperature resistant bricks, etc. The inner layer of the furnace body is in the form of an inner liner, which can be locally repaired, i.e. targeted local repair can be performed on individual damaged positions, and the whole can also be replaced. However, the melting furnace is not convenient to dump as a whole, and the process is too poor in operability. Because the alloy melt remaining in the pores is less, the bottom of the furnace body is relatively large, and the accumulation speed of the melt is slow, and in order to be convenient, it is often necessary to wait for a certain volume of alloy melt to accumulate in the furnace body before cleaning, which will undoubtedly cause corrosion and damage to the elements in the furnace body, such as the problem of burned-out tubes of the electric heating rod, and the service life is too short, increasing the difficulty of maintenance of the melting furnace. SUMMARY

[0004] The technical problem to be solved by the present application is that the traditional melting furnace is not convenient to dump, and the alloy melt is easy to cause damage to the inner liner and elements due to long-term accumulation. The present application provides a low-melting-point alloy melting furnace.

[0005] The application is achieved by the following technical solutions.

[0006] The low-melting alloy furnace comprises a furnace body, an inner container separable from the furnace body is arranged in the furnace body, a heat preservation layer is arranged between the furnace body and the inner container, a heat-resistant base with a height of 1 / 5-1 / 4 of the depth of the inner container is laid in the area of 2 / 3-3 / 4 of the bottom of the inner container, a plurality of grooves are uniformly arranged on the heat-resistant base, an electric heating rod is supported on the upper surface of the heat-resistant base, and the electric heating rod is arranged in cross with the direction of the grooves; the edge of the heat-resistant base and the wall of the inner container form an inner container alloy collecting groove, the end of the groove on the heat-resistant base is communicated with the inner container alloy collecting groove; a loose joint device for alloy melt outflow is arranged on the furnace wall of the inner container alloy collecting groove, the loose joint device comprises a pipeline penetrating through the inner container and the furnace wall of the alloy furnace and opening slightly downward, the pipeline is arranged in the inner section of the furnace and is deeply arranged into the bottom of the alloy collecting groove through a detachable elbow, the inner part of the furnace body of the loose joint device is locked with the inner wall of the inner container through a locking nut, the outer part of the furnace body of the loose joint device is locked with the outer wall of the furnace through a locking nut, and the furnace body and the inner container are fixed through the locking of the inner and outer loose joint devices. The inner container and the furnace body are separated, so that the maintenance period is shortened, more importantly, the alloy collecting groove is formed by the layering of the heat-resistant base, the corrosion of the alloy melt to the heating unit is avoided, the melt can be discharged at any time through the loose joint device, and the damage of the alloy melt to the furnace body caused by long-time accumulation is reduced.

[0007] Further, a temperature measuring unit is arranged in the furnace body, the temperature measuring unit is arranged on the vertical inner wall of the inner container, the adhesion of the alloy melt is avoided, and damage is caused.

[0008] Further, the intersection angle between the electric heating rod and the direction of the groove is 45-90°, the electric heating rod is uniformly heated on the refractory brick, the heat dissipation is also uniform, the local overheating of the electric heating rod is avoided, the service life of the electric heating rod is prolonged, and the use efficiency of the alloy melt is improved.

[0009] Further, the heat-resistant base is provided with not less than two grooves, and the thickness between the grooves is not more than 2 cm, on the basis of supporting the heating unit, the efficiency of the alloy melt collected by the grooves is improved.

[0010] Further, the end of the groove on the heat-resistant base is communicated with the inner container alloy collecting groove, the alloy melt dropped to the heating rod can flow into the inner container alloy collecting groove through the groove.

[0011] Further, the groove on the heat-resistant base is inclined, and the horizontal position of the end communicated with the inner container alloy collecting groove is low, the accumulation and residence of the alloy melt in the groove are avoided, the heating rod is prevented from being corroded, and the service life of the heating element is further improved.

[0012] Further, the heat-resistant base is a refractory brick, and the refractory brick material is mullite high-temperature cotton material, which is resistant to high temperature, has good structural strength and long service life.

[0013] Further, the live joint device comprises a lead-out pipe communicating the inside of the furnace body with the outside of the furnace body, and the outlet of the lead-out pipe is provided with a valve, so that the accumulated alloy solution can be discharged at any time through the control of the valve.

[0014] Further, the live joint device comprises a lead-out pipe communicating the inside of the furnace body with the outside of the furnace body, and the alloy lead-out pipe arranged in the furnace body has an upward stroke connecting section, and by utilizing the principle of communicating vessel, combining the characteristics that the alloy melt is greater than the density of the heating medium and is easy to deposit at the bottom of the furnace body, when the alloy melt continuously deposits to generate pressure on the alloy melt at the bottom after the alloy is melted, the alloy exceeding a certain balance surface is automatically pressed out of the furnace body by the position pressure in the furnace body and flows out from the alloy lead-out pipe by forming an upward flow path in the alloy lead-out pipe.

[0015] Further, the low-melting-point alloy melting furnace is provided with an electrical cabinet fixedly connected to the outer wall of the furnace body, and the electrical cabinet is connected with the electric heating rod through a wire connection room arranged on the outside of the heat preservation layer, for controlling the heating device.

[0016] Further, the low-melting-point alloy melting furnace is provided with casters at the bottom of the furnace body, so as to facilitate the transfer of the melting furnace and improve safety.

[0017] Compared with the prior art, the beneficial effects are:

[0018] The inner container and the furnace body are separated, so that the inner container only needs to be replaced when oil leakage occurs, and the furnace body does not need to be replaced or re-made, thereby saving cost and shortening the maintenance period of the melting furnace, and being convenient and efficient. The heat-resistant base with the groove structure separates and collects the heating element and the alloy melt, solves the problem that the service life of the electric heating rod is too short and the electric heating rod is often burned out, reduces the replacement time of the electric heating unit, and saves the production cost. Meanwhile, the live joint structure device can smoothly lead out and collect the alloy in a molten state from the furnace body, which is convenient and efficient, greatly saves the operation steps, and avoids the hidden danger problem that the alloy melt is accumulated in the melting furnace for a long time. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic view of the low-melting-point alloy melting furnace of the present application;

[0020] Figure 2 is a top view of the low-melting-point alloy melting furnace of the present application;

[0021] Figure 3 is a schematic view of the installation of the live joint device in the embodiments 1-3 of the present application.

[0022] Wherein, 1 furnace body, 2 insulation layer, 3 inner container, 4 firebrick, 5 electric heating rod, 6 alloy collecting groove, 7 live connection device, 8 thermocouple temperature measurement unit, 9 electrical cabinet, 10 caster. DETAILED DESCRIPTION

[0023] 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. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort fall within the protection scope of the present application.

[0024] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back), the directional indications are only used to explain the relative positional relationship, movement condition and the like between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. If the embodiments of the present application involve descriptions of “first”, “second” and the like, the descriptions of “first”, “second” and the like are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first”, “second” can explicitly or implicitly include at least one of the features.

[0025] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms “mounting”, “provided with”, “connection” and the like should be understood in a broad sense, for example, “connection” can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0027] Embodiment 1

[0028] As Figures 1-2The embodiment provides a low-melting-point alloy melting furnace, which comprises a furnace body 1 and an inner container 3 separable from the furnace body 1, and a heat preservation layer 2 is arranged between the furnace body 1 and the inner container 3. An electrical cabinet 9 is arranged on the outer wall of the furnace body 1, the electrical cabinet is connected with internal elements through an electric wire terminal chamber arranged on the outer side of the heat preservation layer, and is used for controlling the power-on and power-off of the internal elements. A handle is arranged on the top of the furnace body 1, and a trundle 10 is arranged on the bottom of the furnace body 1, so that the melting furnace is convenient to transport.

[0029] A thermocouple temperature measuring unit 8 is arranged on the peripheral wall of the inner container 3, refractory bricks 4 are arranged on the bottom 3 / 4 area of the inner container 3, the edge of the refractory bricks 4 and the peripheral wall of the inner container 3 form a groove with a certain depth as an alloy collecting groove 6, a groove is arranged on the upper surface of the refractory bricks 4, and an electric heating rod 5 is arranged above the groove. The electric heating rod 5 not only can effectively heat the medium in the furnace body 1, but also can continuously heat the alloy melt in the alloy collecting groove 6 through heat transfer of the refractory bricks 4, so that the heating and heat dissipation of the electric heating rod 5 are uniform, and the electric heating rod 5 is prevented from being exploded.

[0030] As Figure 3 , the alloy collecting groove 6 is provided with a loose joint device 7 penetrating the furnace body 1, the outer part of the loose joint device 7 is locked with the outer wall of the melting furnace through a locking nut, and the furnace body 1 and the inner container 3 are fixed through the locking of the inner and outer parts of the loose joint device 7. The loose joint device 7 comprises a lead-out pipe, the lead-out pipe comprises a bend pipe and a straight pipe, one end of the bend pipe is vertically upward, the pipe opening is arranged on the bottom of the furnace body 1, the pipe opening is obliquely cut, and the alloy melt is conveniently led in. The other end of the bend pipe is bent, the second pipe opening of the bend pipe is directed to the peripheral wall of the furnace body 1, and the second pipe opening is slightly inclined downward. The second pipe opening of the bend pipe and the first pipe opening of the straight pipe are sealed through sleeve fitting and threaded connection, the straight pipe is obliquely arranged through the peripheral wall of the furnace body 1, the outer wall of the straight pipe is sealed with the combined part of the peripheral wall of the furnace body 1, the other end of the straight pipe is provided with a fourth pipe opening outside the furnace body 1, and the furnace body 1 is connected with the inside and the outside through the bend pipe and the straight pipe. The straight pipe outside the furnace body 1 is provided with a valve, and the inside and the outside of the furnace body 1 can be controlled to be communicated.

[0031] Embodiment 2

[0032] As Figures 1-2 , the embodiment provides a low-melting-point alloy melting furnace, which comprises a furnace body 1 and an inner container 3 separable from the furnace body 1, and a heat preservation layer 2 is arranged between the furnace body 1 and the inner container 3. An electrical cabinet 9 is arranged on the outer wall of the furnace body 1, the electrical cabinet is connected with internal elements through an electric wire terminal chamber arranged on the outer side of the heat preservation layer, and is used for controlling the power-on and power-off of the internal elements. A handle is arranged on the top of the furnace body 1, and a trundle 10 is arranged on the bottom of the furnace body 1, so that the melting furnace is convenient to transport.

[0033] The peripheral wall of the inner container 3 is provided with a thermocouple temperature measuring unit 8, and the bottom 2 / 3 area of the inner container 3 is paved with refractory bricks 4, and the edge of the refractory bricks 4 and the peripheral wall of the inner container 3 form a groove with a certain depth as an alloy collecting groove 6, the upper surface of the refractory bricks 4 is provided with a groove, and the end of the groove is communicated with the alloy collecting groove 6, and the alloy melt deposited in the groove can flow into the alloy collecting groove 6 through the end of the groove, so as to avoid the deposition adhesion or corrosion of the electric heating rod 5. The upper surface of the groove supports the electric heating rod 5, and the direction of the groove is perpendicular to the direction of the electric heating rod 5.

[0034] As Figure 3 , the alloy collecting groove 6 is provided with a movable joint device 7 penetrating the inside and outside of the furnace body 1, and the movable joint device 7 is locked with the outer wall of the furnace by a locking nut, and the furnace body 1 and the inner container 3 are fixed by the locking of the movable joint device 7. The movable joint device 7 includes a discharge pipe, and the discharge pipe includes a bend pipe and a straight pipe, one end of the bend pipe is vertically upward, and the pipe opening is arranged at the bottom of the furnace body 1, and the pipe opening is chamfered, which is convenient for the alloy melt to enter. The other end of the bend pipe is bent, and the pipe opening two is directed towards the peripheral wall of the furnace body 1, and the direction of the pipe opening two is slightly inclined downward. The pipe opening two of the bend pipe and the pipe opening three of the straight pipe are sealed by sleeving and threaded connection, the straight pipe is inclined and penetrates the peripheral wall of the furnace body 1, and the outer wall of the straight pipe is sealed with the combined part of the peripheral wall of the furnace body 1, and the other end of the straight pipe is provided with a pipe opening four outside the furnace body 1, and the furnace body 1 is connected with the inside and outside through the bend pipe and the straight pipe. The pipe opening of the straight pipe outside the furnace body 1 is provided with a valve, which can control the communication between the inside and outside of the furnace body 1.

[0035] Example 3

[0036] As Figures 1-2 , the present embodiment provides a low melting point alloy melting furnace, which comprises a furnace body 1 and an inner container 3 which can be separated from the furnace body 1, and a heat preservation layer 2 is arranged between the furnace body 1 and the inner container 3. The outer wall of the furnace body 1 is provided with an electrical cabinet 9, and the electrical cabinet is connected with the internal components through the wire connection room arranged outside the heat preservation layer, which is used for controlling the power on and off of the internal components. The top of the furnace body 1 is provided with a handle, and the bottom is provided with a castor 10, which is convenient for the transfer of the melting furnace.

[0037] The peripheral wall of the inner container 3 is provided with a thermocouple temperature measuring unit 8, and the bottom 2 / 3 area of the inner container 3 is paved with refractory bricks 4, and the edge of the refractory bricks 4 and the peripheral wall of the inner container 3 form a groove with a certain depth as an alloy collecting groove 6, the upper surface of the refractory bricks 4 is provided with a groove, and the end of the groove is communicated with the alloy collecting groove 6, and the depth of the groove is inclined, that is, the closer to the alloy collecting groove 6, the deeper the depth of the groove, which is beneficial to the alloy melt falling on the refractory bricks 4 to flow into the alloy collecting groove 6. The upper surface of the groove supports the electric heating rod 5, and the direction of the groove is perpendicular to the direction of the electric heating rod 5.

[0038] As Figure 3 , the alloy collection tank 6 is provided with a loose joint device 7 penetrating the furnace body 1 and the inner container 3, the outer part of the loose joint device 7 is locked with the outer wall of the furnace by a locking nut, and the furnace body 1 and the inner container 3 are fixed by locking the inner and outer parts of the loose joint device 7. The loose joint device 7 includes a lead-out pipe, which includes a bend pipe and a straight pipe. One end of the bend pipe is vertically upward, and the pipe opening is arranged at the bottom of the furnace body 1, and the pipe opening is chamfered to facilitate the entry of the alloy melt. The other end of the bend pipe is bent, and the pipe opening two is directed towards the peripheral wall of the furnace body 1, and the pipe opening two is slightly inclined downward. The pipe opening two of the bend pipe and the pipe opening three of one end of the straight pipe are sealed by sleeving and threaded connection, the straight pipe penetrates the peripheral wall of the furnace body 1 in an inclined manner, and the outer wall of the straight pipe is sealed at the joint with the peripheral wall of the furnace body 1, and the other end of the straight pipe is provided with a pipe opening four outside the furnace body 1, and the furnace body 1 is connected with the inside and outside through the bend pipe and the straight pipe. The pipe opening of the straight pipe outside the furnace body 1 is provided with a valve to control the connection between the inside and outside of the furnace body 1.

[0039] In examples 1-3, when the deposition height of the alloy melt is less than the equilibrium height, the valve of the loose joint device 7 is closed to prevent the high-temperature liquid in the furnace from flowing out, and when the deposition height of the alloy melt is equal to or higher than the equilibrium height, the valve of the loose joint device 7 can be kept open, and the alloy melt higher than the equilibrium height can be automatically discharged to realize automatic recovery of the alloy.

[0040] The height of the connecting section of the lead-out pipe, the heating medium and the deposited alloy melt satisfy the equilibrium relationship ρ1gh1+ρ2gh2=ρ3gh3. Wherein ρ1 and ρ3 are the densities of the alloy melt in the alloy lead-out pipe, ρ2 is the density of the heating medium, h1 is the deposition height of the alloy melt, h2 is the height of the heating medium, and h3 is the upward travel height of the lead-out pipe. When h1>(ρ1gh3-ρ2gh2) / ρ1g, that is, the liquid surface height of the alloy melt deposition exceeds the equilibrium point, the alloy higher than the equilibrium point is pressed out of the furnace body 1 by the pressure in the furnace body 1, and flows out through the alloy lead-out pipe.

[0041] Example 4

[0042] The present embodiment provides a low-melting-point alloy furnace, which includes a furnace body 1 and an inner container 3 separable from the furnace body 1, and a heat preservation layer 2 is arranged between the furnace body 1 and the inner container 3. An electrical cabinet 9 is arranged on the outer wall of the furnace body 1 for controlling the power-on and power-off of the internal components. A handle is arranged at the top of the furnace body 1, and a castor 10 is arranged at the bottom of the furnace body 1 to facilitate the transfer of the furnace.

[0043] The peripheral wall of the inner container 3 is provided with a thermocouple temperature measuring unit 8, and the bottom 2 / 3 area of the inner container 3 is paved with refractory bricks 4, and the edge of the refractory bricks 4 and the peripheral wall of the inner container 3 form a groove with a certain depth as an alloy collecting groove 6, the upper surface of the refractory bricks 4 is provided with a groove, and the end of the groove is communicated with the alloy collecting groove 6, the upper side of the groove is provided with an electric heating rod 5, and the upper surface of the groove supports the electric heating rod 5, and the direction of the groove is crossed with the direction of the electric heating rod 5.

[0044] The alloy collecting groove 6 is provided with a loose joint device 7 penetrating the inside and outside of the furnace body 1, and the outer part of the loose joint device 7 is locked with the outer wall of the furnace by a locking nut, and the furnace body 1 and the inner container 3 are fixed by the locking of the inside and outside of the loose joint device 7. The loose joint device 7 includes a discharge pipe, and the pipe opening of the discharge pipe outside the furnace body 1 is provided with a valve, which can control the communication between the inside and outside of the furnace body 1. In this embodiment, the alloy melt is cleaned by periodically opening the valve of the loose joint device 7.

[0045] Obviously, the above embodiment of the present application is only an example for clearly illustrating the present application, and is not a limitation on the embodiments of the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the claims of the present application.

Claims

1. A low-melting-point alloy melting furnace, characterized in that, The furnace includes a furnace body, within which a separable inner liner is provided. An insulation layer is provided between the furnace body and the inner liner. A heat-resistant substrate, with a height of 1 / 5 to 1 / 4 of the inner liner's depth, is laid flat across the bottom 2 / 3 to 3 / 4 area of ​​the inner liner. Multiple evenly arranged grooves are provided on the heat-resistant substrate, and electric heating rods are supported on the upper surface of the heat-resistant substrate, with the heating rods arranged intersecting the grooves. An inner liner alloy collection groove is formed between the edge of the heat-resistant substrate and the inner liner wall. The ends of the grooves on the heat-resistant substrate connect with the inner liner. The alloy collecting tank is connected; the furnace wall of the inner alloy collecting tank is provided with a union device for the outflow of alloy melt. The union device includes a pipe that penetrates the inner liner and furnace wall of the alloy furnace and opens slightly downward. The pipe is located in the inner section of the furnace and extends into the bottom of the alloy collecting tank through a detachable bend. The inner part of the union device is locked to the inner wall of the inner liner by a locking nut, and the outer part of the union device is locked to the outer wall of the furnace by a locking nut. The furnace body and the inner liner are fixed by locking the union device from the inside and outside.

2. The low-melting-point alloy furnace according to claim 1, characterized in that, The furnace body is also equipped with a temperature measuring unit, which is installed on the vertical inner wall of the inner liner.

3. The low-melting-point alloy furnace according to claim 1, characterized in that, The heat-resistant matrix is ​​a refractory brick, and the refractory brick is made of mullite high-temperature cotton material.

4. The low-melting-point alloy furnace according to claim 1, characterized in that, The angle between the electric heating rod and the groove is 45-90°.

5. The low-melting-point alloy furnace according to claim 1, characterized in that, The heat-resistant substrate has at least two grooves, and the thickness between the grooves is no more than 2 cm.

6. The low-melting-point alloy furnace according to claim 4, characterized in that, The grooves on the heat-resistant substrate are inclined, and the end that communicates with the inner alloy collection tank is at a lower level.

7. The low-melting-point alloy furnace according to claim 1, characterized in that, The live joint device includes an outlet pipe connecting the inside and outside of the furnace, and the outlet of the outlet pipe is equipped with a valve.

8. The low-melting-point alloy furnace according to claim 1, characterized in that, The live joint device includes an outlet pipe connecting the inside and outside of the furnace, and the alloy outlet pipe located inside the furnace has an upward-flowing connecting section.

9. The low-melting-point alloy furnace according to claim 1, characterized in that, An electrical cabinet is fixedly connected to the outer wall of the low-melting-point alloy furnace. The electrical cabinet is connected to the electric heating rod through an electrical wiring compartment located outside the insulation layer.

10. The low-melting-point alloy furnace according to claim 1, characterized in that, The furnace body of the low melting point alloy melting furnace is equipped with casters at the bottom.

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