Movable annular electroslag bar heat preservation and heating equipment

Abstract

The utility model relates to the technical field of mechanical design and metallurgical heat treatment, and discloses movable annular electroslag bar heat preservation heating equipment which comprises a positioning base and a heat preservation heating furnace, and a screw hole is formed in the bottom of the positioning base. According to the movable annular electroslag bar heat preservation and heating equipment, the electroslag bar containing table is arranged at the front end of the heat preservation heating furnace and has the effects of supporting and moving horizontally-placed electroslag bars, meanwhile, the heat preservation heating furnace can achieve free movement of the furnace body along the horizontal sliding rail, and the heat preservation and heating procedure of the electroslag bars is more convenient and faster; a metal sealing cover is arranged at the front end of the heat preservation heating furnace and is tightly attached to and fixed to a furnace opening and an electroslag bar through metal buckles, harm such as scalding caused by an unsealed heating furnace is avoided, and the safety of the heat preservation heating procedure is improved. And an asbestosed wire gauze heat insulation layer is arranged in the metal sealing cover, so that a good heat preservation effect can be achieved, and the effects of saving energy consumption and reducing cost are further achieved.

Description

Technical Field

[0001] This utility model relates to the fields of mechanical design and metallurgical heat treatment technology, specifically a mobile annular electroslag bar heat preservation and heating device. Background Technology

[0002] In the petroleum, chemical, metallurgical and machinery industries, heating furnaces are among the most important pieces of equipment. They can be used to heat materials of various purposes, such as metal workpieces, ceramic materials, and alloy powders, to a specified temperature. At the same time, they can heat workpieces and materials of various shapes, such as forgings, castings, powders, and fragments of different sizes. They have a wide range of applications and are widely used in many industries.

[0003] Electroslag remelting (ESR) rods are crucial materials in the ESR remelting process. Typically, ESR rods are welded to electrodes and then vertically placed in a remelting furnace for remelting. To evaporate moisture and remove excess oxygen and hydrogen, the rods require prolonged heating in a furnace. Commonly used ESR rod heating furnaces are high-temperature heat treatment box-type resistance furnaces, which have ample internal heating space to provide sufficient temperature and achieve long-term heat preservation. However, current furnaces are rectangular in shape with a square internal space. Placing cylindrical ESR rods inside for heat preservation results in low space utilization. Furthermore, the gaps between the annular and square shapes cause the furnace to be exposed to the outside air, leading to longer heating times to the designated temperature and higher resource consumption. In addition, when heating electroslag rods in a rectangular resistance heating furnace, the end of the electroslag rod to be heated must first be moved to the furnace opening of the resistance heating furnace, and then the entire electroslag rod is pushed into the resistance heating furnace by a horizontal trolley. This process is complicated, time-consuming and labor-intensive.

[0004] Chinese invention patent CN111504063A designs an upward-opening annular heating furnace with different heaters on its inner wall, controlled by PI0 to heat different areas of the same workpiece at different temperatures. Patent CN212227732U designs an upward-opening cylindrical multi-layer heating furnace, with nuts, positioning screws, force-applying mechanisms, and limiting plates on the outside of the cylinder, realizing a multi-functional cylindrical heating furnace capable of applying force from the outside (pressing the heated workpiece). However, the annular and cylindrical heating furnaces of the above patents are suitable for workpieces or components that are relatively short and can be lifted from the top and placed vertically into the heating furnace. For electroslag remelting bars used in the electroslag remelting process, which are about 10m long, it is difficult to lift them vertically and place them into an upward-opening heating furnace in actual production. Therefore, this utility model designs a horizontally open, movable annular resistance heating furnace for heating electroslag bars. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This utility model addresses the shortcomings of rectangular box-type resistance heating furnaces, such as low space and energy utilization, large footprint, and time-consuming and labor-intensive heat preservation and heating processes. It provides an innovative improvement by offering a mobile annular electroslag bar heat preservation and heating device.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a movable annular electroslag bar insulation and heating device, comprising a positioning base and an insulation and heating furnace, wherein the bottom of the positioning base is provided with screw holes, and a support platform is installed at the bottom of the positioning base by bolts, and the insulation and heating furnace is fixedly installed on the top of the positioning base.

[0009] Preferably, the heat-insulating heating furnace is an annular resistance heating type heat-insulating heating furnace, with its outermost layer being equipped with heat-resistant steel insulation material, the next outermost layer being aluminum silicate vacuum refractory material, and the innermost furnace wall being constructed of ceramic refractory material; the inner wall of the heat-insulating heating furnace is covered with uniformly distributed resistance heating elements, and temperature measuring thermocouples and temperature controlling thermocouples are installed on the left and right sides of the inner wall of the furnace.

[0010] Preferably, a slide rail structure is provided below the heat preservation heating furnace, including a first roller, a first slide rail and a first roller lock, which serves to transport and fix the heat preservation heating furnace horizontally. The first roller is installed at the bottom of the support platform, the first roller is engaged above the first slide rail, and the first roller lock is installed on the side of the first roller.

[0011] Preferably, the front end of the heat preservation heating furnace is provided with a horizontal slide rail structure for auxiliary transportation of electroslag rods, including a second roller, a second slide rail, a second roller lock and an electroslag rod placement platform. The second roller is fixedly installed at the bottom of the electroslag rod placement platform, the second roller is slidably engaged above the second slide rail, and the second roller lock is installed on the side of the second roller.

[0012] Preferably, the front end of the heat preservation heating furnace is also equipped with a metal cover. The metal slot is fixedly installed on the outer wall of the heat preservation heating furnace near the port position. The metal protrusion is fixedly installed on the outer side wall of the metal cover. The metal cover is connected, fixed and sealed to the heat preservation heating furnace through the cooperation of the metal slot and the metal protrusion.

[0013] Preferably, the first slide rail and the second slide rail are mounted on the same straight track.

[0014] Compared with the prior art, this utility model provides a movable annular electroslag bar insulation and heating device, which has the following beneficial effects:

[0015] 1. The movable annular electroslag bar insulation and heating equipment has an electroslag bar placement platform at the front end of the insulation and heating furnace, which provides support and allows for the movement of horizontally placed electroslag bars. At the same time, the insulation and heating furnace can move freely along the horizontal slide rail, making the insulation and heating process of electroslag bars more convenient.

[0016] 2. This movable annular electroslag bar insulation and heating equipment is equipped with rollers at the lower end of both the insulation and heating furnace and the electroslag bar auxiliary transport and placement platform at its front end. This allows the positions of the insulation and heating furnace and the electroslag bar placement platform to be adjusted according to factory requirements. At the same time, the rollers are equipped with roller locks to fix their positions, ensuring that the electroslag bar auxiliary transport and placement platform and the insulation and heating furnace will not move arbitrarily when placing and moving the electroslag bars, thus ensuring the safety of the process.

[0017] 3. The movable annular electroslag bar insulation and heating equipment has a metal cover at the front end of the insulation and heating furnace, which can more effectively isolate the heat exchange between the furnace and the outside, resulting in better insulation and heating effect inside the furnace; the insulation and heating furnace is annular, and its shape and size are closely matched with the shape of the electroslag bar, so as to maximize the space utilization, save energy consumption of the insulation and heating furnace and reduce costs.

[0018] 4. This movable annular electroslag rod insulation and heating equipment has a metal cover at the front end of the insulation and heating furnace. The cover is tightly fitted and fixed to the furnace opening and the electroslag rod through metal clips, avoiding the hazards such as burns caused by an unsealed heating furnace and improving the safety of the insulation and heating process. The metal cover is equipped with an asbestos mesh insulation layer, which can play a good role in heat preservation and further save energy and reduce costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the movable annular electroslag bar insulation and heating device of this utility model.

[0020] Figure 2 This is a schematic diagram of the slide rail device and support platform of this utility model;

[0021] Figure 3 This is a schematic diagram of the electroslag bar horizontal rail of this utility model;

[0022] Figure 4 This is a schematic diagram of the metal cap of this utility model.

[0023] The components include: 1. Positioning base; 2. Insulation heating furnace; 3. Support platform; 4. Heat-resistant steel insulation layer; 5. Aluminum silicate vacuum refractory layer; 6. Ceramic refractory material; 7. Resistance heating element; 8. Temperature measuring thermocouple; 9. Temperature controlling thermocouple; 10-1. First roller; 10-2. Second roller; 11-1. First slide rail; 11-2. Second slide rail; 12-1. First roller lock; 13. Electroslag rod placement platform; 14. Metal cover; 15. Metal slot; 16. Metal protrusion. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 This utility model provides a movable annular electroslag bar heat preservation and heating device, including a positioning base 1 and a heat preservation and heating furnace 2. The bottom of the positioning base 1 is provided with screw holes, and a support platform 3 is installed on the bottom of the positioning base 1 by bolts. The heat preservation and heating furnace 2 is fixedly installed on the top of the positioning base 1.

[0026] Furthermore, the heat preservation furnace 2 is an annular resistance heating type heat preservation furnace, with its outermost layer equipped with heat-resistant steel insulation material 4, the next outermost layer being aluminum silicate vacuum refractory material 5, and the innermost furnace wall being constructed of ceramic refractory material 6; the inner wall of the heat preservation furnace 2 is covered with uniformly distributed resistance heating elements 7, and temperature measuring thermocouples 8 and temperature controlling thermocouples 9 are installed on the left and right sides of the inner wall of the furnace.

[0027] Furthermore, a slide rail structure is provided below the heat preservation heating furnace 2, including a first roller 10-1, a first slide rail 11-1 and a first roller lock 12-1, which serves to transport and fix the heat preservation heating furnace 2 horizontally. The first roller 10-1 is installed at the bottom of the support platform 3 and is engaged above the first slide rail 11-1. The first roller lock 12-1 is installed on the side of the first roller 10-1. The heat preservation heating furnace 2 can move and adjust its position along the first slide rail 11-1 and can be fixed in the adjusted position by the first roller lock 12-1.

[0028] Furthermore, the front end of the heat preservation heating furnace 2 is provided with a horizontal slide rail structure for auxiliary transport of electroslag rods, including a second roller 10-2, a second slide rail 11-2, a second roller lock, and an electroslag rod placement platform 13. The second roller 10-2 is fixedly installed at the bottom of the electroslag rod placement platform 13. The second roller 10-2 is slidably engaged above the second slide rail 11-2. The second roller lock is installed on the side of the second roller 10-2. The horizontal slide rail structure can move left and right along the second slide rail 11-2 and can be fixed in position after movement by the second roller lock.

[0029] Furthermore, the front end of the heat preservation heating furnace 2 is also equipped with a metal cover 14. The metal slot 15 is fixedly installed on the outer wall of the heat preservation heating furnace 2 near the port position. The metal protrusion 16 is fixedly installed on the outer side wall of the metal cover 14. The metal cover 14 is connected, fixed and sealed to the heat preservation heating furnace 2 through the cooperation of the metal slot 15 and the metal protrusion 16.

[0030] Furthermore, the first slide rail 11-1 and the second slide rail 11-2 are mounted on the same straight track, so that when the electroslag bar placement platform 13 moves, it can smoothly insert the electroslag bar into the interior of the heat preservation and heating furnace 2.

[0031] In use, fully open the connection between the metal slot 15 and the metal protrusion 16, remove the heat preservation furnace 2, open the first roller lock 12-1, then push the heat preservation furnace 2 to the end of the first slide rail 11-1, lock the first roller lock 12-1 to fix the position of the heat preservation furnace 2, open the second roller lock at the lower end of the electroslag rod auxiliary transport slide rail structure at the front end of the heat preservation furnace 2, move the electroslag rod placement platform 13 to a suitable position, lock the second roller lock to fix the electroslag rod placement platform 13, place the electroslag rod horizontally on the electroslag rod placement platform 13, then open the second roller lock 12-2, and move the electroslag rod placement platform 13 containing the electroslag rod along the second slide rail 11-2 to the furnace opening of the heat preservation furnace 2. Lock the second roller lock 12-2 to fix the position of the electroslag rod placement platform 13. Open the first roller lock 12-1 at the lower end of the heat preservation furnace 2. Align the furnace opening with the tail of the segment to be heated of the electroslag rod. Push the heat preservation furnace 2 until the tail of the segment to be heated of the electroslag rod is completely inside the heat preservation furnace 2. Lock the first roller lock 12-1 to fix the position of the heat preservation furnace 2 and prepare for heating. Install the metal slot 15 at the front end of the heat preservation furnace 2 at the furnace opening and make it fit tightly with the electroslag rod and the heat preservation furnace. Then lock all the metal protrusions 16 to fix the metal slot 15 and ensure the sealing of the metal cover 14 with the furnace opening and the electroslag rod. Finally, turn on the power of the heat preservation furnace to carry out the heat preservation heating process.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A movable annular electroslag bar insulation and heating device, comprising a positioning base (1) and an insulation and heating furnace (2), characterized in that: The bottom of the positioning base (1) is provided with screw holes, and the bottom of the positioning base (1) is equipped with a support platform (3) by bolts. The heat preservation heating furnace (2) is fixedly installed on the top of the positioning base (1).

2. The movable annular electroslag bar insulation and heating device according to claim 1, characterized in that: The heat-insulating heating furnace (2) is an annular resistance heating type heat-insulating heating furnace. Its outermost layer is equipped with heat-resistant steel insulation material (4), the next outermost layer is aluminum silicate vacuum refractory material (5), and the innermost furnace wall is constructed of ceramic refractory material (6). The inner wall of the heat-insulating heating furnace (2) is covered with uniformly distributed resistance heating elements (7), and temperature measuring thermocouples (8) and temperature controlling thermocouples (9) are installed on the left and right sides of the inner wall of the furnace.

3. The movable annular electroslag bar insulation and heating device according to claim 1, characterized in that: The heat preservation heating furnace (2) is provided with a slide rail structure, including a first roller (10-1), a first slide rail (11-1) and a first roller lock (12-1), which serves to transport and fix the heat preservation heating furnace (2) horizontally. The first roller (10-1) is installed at the bottom of the support platform (3), and the first roller (10-1) is engaged above the first slide rail (11-1). The first roller lock (12-1) is installed on the side of the first roller (10-1).

4. The movable annular electroslag bar insulation and heating device according to claim 3, characterized in that: The front end of the heat preservation heating furnace (2) is provided with a horizontal slide rail structure for auxiliary transportation of electroslag rods, including a second roller (10-2), a second slide rail (11-2), a second roller lock and an electroslag rod placement platform (13). The second roller (10-2) is fixedly installed at the bottom of the electroslag rod placement platform (13). The second roller (10-2) is slidably engaged above the second slide rail (11-2). The second roller lock is installed on the side of the second roller (10-2).

5. A movable annular electroslag bar insulation and heating device according to claim 1, characterized in that: The front end of the heat preservation heating furnace (2) is also equipped with a metal cover (14). The metal slot (15) is fixedly installed on the outer wall of the heat preservation heating furnace (2) near the port. The metal protrusion (16) is fixedly installed on the outer wall of the metal cover (14). The metal cover (14) is connected to, fixed and sealed with the heat preservation heating furnace (2) through the cooperation of the metal slot (15) and the metal protrusion (16).

6. A movable annular electroslag bar insulation and heating device according to claim 4, characterized in that: The first slide rail (11-1) and the second slide rail (11-2) are mounted on the same straight track.

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