Electroslag hollow remelting smelting device for stainless seamless steel pipe

Abstract

The utility model relates to the technical field of electroslag remelting, in particular to an electroslag hollow remelting smelting device of a stainless seamless steel pipe, which comprises a base, a smelting furnace fixedly connected to the top of the base, an electrode bar inserted to the top of the smelting furnace, a lifting rope connected to the top of the electrode bar, a crane connected to the outer end of the lifting rope, and a support plate fixed to one side of the top of the base. A connecting block is connected to one side wall of the supporting plate, an adjusting plate is fixedly connected to the outer end of the connecting block, movable plates are connected to the two sides of the outer wall of the adjusting plate, clamping blocks are fixed to the inner sides of the movable plates, and the two clamping blocks are clamped to the outer wall of the electrode bar. The electrode bar can be clamped through the clamping blocks on the two sides, so that when the electrode bar is inserted into a furnace body, the electrode bar is slightly loosened to be limited, the stability is high when the electrode bar is inserted into the furnace body, and impact caused by shaking to the furnace body is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electroslag remelting, in particular to an electroslag hollow remelting smelting device for a stainless seamless steel pipe. Background Art

[0002] Electroslag remelting steel is a method of melting steel using the resistance heat generated when electric current passes through molten slag as a heat source, the purpose of which is to increase the purity of the metal and improve the crystallization of the ingot;

[0003] In the process of production and processing of existing seamless steel pipes, in order to improve their quality, an electroslag hollow remelting smelting device is used. In the actual smelting process, the motor needs to be inserted into the electroslag in the furnace body and powered on. Then the electroslag generates high heat to melt the tail end of the motor rod to form droplets that drip and cool before passing through a special channel to form a steel pipe. However, in actual use, the electrode rod is lifted by a crane using a rope and inserted into the electroslag in the furnace body. As the electrode rod is consumed and released, it is easy to shake when it falls. The stability is poor, and the shaking is easy to cause impact on the furnace body. Therefore, we propose an electroslag hollow remelting smelting device for stainless seamless steel pipes. Utility Model Content

[0004] The utility model aims to provide an electroslag hollow remelting smelting device for stainless seamless steel pipes, which solves the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electroslag hollow remelting smelting device for stainless seamless steel pipes, comprising a base, the top of the base is fixedly connected to a furnace, the top of the furnace is plugged with an electrode rod, the top of the electrode rod is connected to a lifting rope, the outer end of the lifting rope is connected to a crane, a support plate is fixed to one side of the top of the base, a side wall of the support plate is connected to a connecting block, the outer end of the connecting block is fixedly connected to an adjusting plate, both sides of the outer wall of the adjusting plate are connected to movable plates, the inner side of the movable plate is fixed with clamping blocks, and the two clamping blocks are clamped on the outer wall of the electrode rod.

[0006] By adopting the above technical solution, when the crane uses the lifting rope to insert the electrode rod into the furnace, the electrode rod is placed between the two clamping blocks, and the clamping blocks are fitted to the outer wall of the electrode rod, thereby limiting the descending trajectory of the electrode rod, so that the electrode rod can be prevented from shaking when it is lowered and inserted into the furnace, thereby avoiding impact on the furnace.

[0007] As a preferred embodiment of the utility model, a strip groove is opened on one side wall of the adjustment plate, a dual-axis motor is fixed in the middle of the inner cavity of the strip groove, both ends of the dual-axis motor are fixedly connected with a screw rod, the outer end of the screw rod is rotatably connected to the end surface of the inner cavity of the strip groove, the outer wall of the screw rod is covered with an adaptive screw rod slider, and the outer wall of the screw rod slider is fixedly connected to the corresponding movable plate.

[0008] By adopting the above technical solution, the dual-axis motor can drive the screw rod to rotate, thereby driving the screw rod sliders on both sides to move closer to or away from each other, thereby driving the clamping blocks on both sides to move closer to or away from each other, thereby clamping or releasing the electrode rod.

[0009] As a preferred embodiment of the utility model, a limiting groove is opened on the upper side of one side wall of the support plate, an adaptive limiting slider is inserted into the inner cavity of the limiting groove, a pressure sensor is connected to the bottom of the limiting slider, the tail end of the pressure sensor is fixedly connected to the bottom of the limiting groove, the outer wall of the limiting slider is fixedly connected to the connecting block, and a single-chip computer is fixed to the outer wall of the support plate.

[0010] By adopting the above technical solution, in actual use, the signal output end of the pressure sensor is connected to the signal input end of the single-chip microcomputer, and the signal output end of the single-chip microcomputer is respectively connected to the signal input end of the dual-axis motor and the crane at the outer end of the lifting rope, so that when the electrode rod is inserted into the electroslag for the first time for use, the clamps on both sides clamp the electrode rod to make it stable, and the crane slightly releases the lifting rope. At this time, the clamps bear the weight of the electrode rod completely, so that the pressure sensor will feedback a certain pressure value. After the electrode rod is consumed, the value fed back by the pressure sensor decreases. When the reduction reaches the threshold, the single-chip microcomputer will make the crane tighten the lifting rope and start the dual-axis motor to drive the clamp to loosen. Then the motor releases the lifting rope again, so that the electrode rod drops again, so that the shortened electrode rod is inserted into the electroslag again, and the amount of the lifting rope released by the crane at a time is set in advance, so as to ensure that the electrode rod will automatically drop after a certain amount of electrode rod is consumed each time, and to ensure that the amount of filling is the same each time, so as to ensure that the electrode rod can be used efficiently and the filling of the electrode rod is automatically controlled.

[0011] As a preferred embodiment of the present utility model, one side wall of the two clamping blocks corresponding to the electrode rod is provided with an arc groove.

[0012] By adopting the above technical solution and setting the arc groove, the clamping block can ensure the fit when it is fitted to the outer wall of the electrode rod for limiting, thereby ensuring the limiting effect.

[0013] As a preferred embodiment of the utility model, the tail end of the suspension rope is hung by a hanging buckle and a hanging ring on the top of the electrode rod.

[0014] By adopting the above technical solution, it is convenient to disassemble and then replace the electrode rod.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] The electroslag hollow remelting smelting device of a stainless seamless steel pipe of the technical solution of the present application can clamp the electrode rod through the clamping blocks on both sides, so that the electrode rod is slightly loosened when the electrode rod is inserted into the furnace body to form a limit on the electrode rod, so that the electrode rod can be inserted into the furnace body with high stability to avoid shaking and causing impact on the furnace body;

[0017] By slightly loosening the lifting rope while clamping the electrode rod, the clamp block and the adjustment plate bear the weight of the electrode rod. When the electrode rod consumes a certain amount, the pressure borne by the pressure sensor decreases by a certain amount. At this time, the single-chip microcomputer controls the dual-axis motor to loosen the clamp block, and controls the crane connected to the outer end of the lifting rope to release the lifting rope so that the electrode rod drops a certain distance, thereby realizing automatic control of the electrode rod to be lowered and inserted into the electroslag, so as to automatically control the amount of the motor inserted into the electroslag, thereby improving the convenience of operation and ensuring that the electrode rod is continuously energized to form droplets. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the electroslag hollow remelting smelting device for stainless seamless steel pipes of the utility model;

[0020] Figure 2 It is a schematic diagram of the connection structure of the adjusting plate and the clamping block of the electroslag hollow remelting smelting device of the stainless seamless steel pipe of the utility model;

[0021] Figure 3 The utility model is a schematic diagram of the local structure of the support plate of the electroslag hollow remelting smelting device for stainless seamless steel pipes.

[0022] In the figure:

[0023] 1. Base; 11. Furnace; 12. Support plate; 13. Connecting block; 14. Single chip microcomputer; 15. Limiting slide; 16. Limiting slider; 17. Pressure sensor;

[0024] 2. Adjustment plate; 21. Movable plate; 22. Clamping block; 23. Screw slider; 24. Dual-axis motor; 25. Screw;

[0025] 3. Electrode rod;

[0026] 4. Lifting rope. DETAILED DESCRIPTION

[0027] See also Figure 1-3 The utility model provides a technical solution: an electroslag hollow remelting smelting device for a stainless seamless steel pipe, comprising a base 1, a furnace 11 is fixedly connected to the top of the base 1, an electrode rod 3 is plugged into the top of the furnace 11, a suspension rope 4 is connected to the top of the electrode rod 3, the outer end of the suspension rope 4 is connected to a crane, a support plate 12 is fixed to one side of the top of the base 1, a connecting block 13 is connected to one side wall of the support plate 12, an adjusting plate 2 is fixedly connected to the outer end of the connecting block 13, both sides of the outer wall of the adjusting plate 2 are connected to movable plates 21, a clamping block 22 is fixed to the inner side of the movable plate 21, and two clamping blocks 22 are clamped on the outer wall of the electrode rod 3;

[0028] The tail end of the hanging rope 4 is connected to the hanging ring on the top of the electrode rod 3 through a hanging buckle, so as to facilitate disassembly;

[0029] When the crane uses the lifting rope 4 to insert the electrode rod 3 into the melting furnace 11, the electrode rod 3 is placed between the two clamping blocks 22, and the clamping blocks 22 are attached to the outer wall of the electrode rod 3, so as to limit the descending trajectory of the electrode rod 3, so as to prevent the electrode rod 3 from shaking when the electrode rod 3 is lowered and inserted into the melting furnace 11, thereby avoiding impact on the melting furnace 11;

[0030] Furthermore, arc grooves are provided on one side wall of the two clamping blocks 22 corresponding to the electrode rod 3. The arc grooves ensure the clamping blocks 22 are fitted to the outer wall of the electrode rod 3 for position limiting, thereby ensuring the position limiting effect.

[0031] like Figure 1 and 2 As shown; a strip groove is provided on one side wall of the adjustment plate 2, a dual-axis motor 24 is fixed in the middle of the inner cavity of the strip groove, both ends of the dual-axis motor 24 are fixedly connected with a screw rod 25, the outer end of the screw rod 25 is rotatably connected to the end surface of the inner cavity of the strip groove, the outer wall of the screw rod 25 is sleeved with an adapted screw rod slider 23, and the outer wall of the screw rod slider 23 is fixedly connected to the corresponding movable plate 21;

[0032] The double-axis motor 24 can drive the screw rod 25 to rotate, thereby driving the screw rod sliders 23 on both sides to move closer to or away from each other, thereby driving the clamping blocks 22 on both sides to move closer to or away from each other, thereby clamping or releasing the electrode rod 3;

[0033] like Figure 1 and 3 As shown; a limit slot 15 is provided on the upper side of one side wall of the support plate 12, an adaptable limit slider 16 is inserted into the inner cavity of the limit slot 15, a pressure sensor 17 is connected to the bottom of the limit slider 16, the tail end of the pressure sensor 17 is fixedly connected to the bottom of the limit slot 15, the outer wall of the limit slider 16 is fixedly connected to the connecting block 13, and a single chip computer 14 is fixed to the outer wall of the support plate 12;

[0034] In actual use, the signal output end of the pressure sensor 17 is connected to the signal input end of the single-chip microcomputer 14, and the signal output end of the single-chip microcomputer 14 is respectively connected to the signal input end of the dual-axis motor 24 and the crane at the outer end of the lifting rope 4, so that when the electrode rod 3 is first inserted into the electroslag for use, the clamps 22 on both sides clamp the electrode rod 3 to make it stable, and the crane slightly releases the lifting rope 4. At this time, the clamps 22 fully bear the weight of the electrode rod 3, so that the pressure sensor 17 will feedback a certain pressure value. After the electrode rod 3 is consumed, the pressure sensor The feedback value of 17 decreases. When the decrease reaches the threshold, the single-chip computer 14 will cause the crane to tighten the rope 4 and start the dual-axis motor 24 to drive the clamp 22 to loosen. The motor then releases the rope 4 again, causing the electrode rod 3 to drop again, so that the shortened electrode rod 3 is inserted into the electroslag again, and the amount of the rope 4 released by the crane at a time is set in advance, so that the electrode rod 3 will automatically drop each time a certain amount of electrode rod 3 is consumed, and the amount of filling is the same each time, so that the electrode rod 3 can be used efficiently and the filling of the electrode rod 3 can be automatically controlled.

[0035] The implementation principle of the electroslag hollow remelting smelting device of the present application is: when the crane uses the lifting rope 4 to insert the electrode rod 3 into the furnace 11, the electrode rod 3 is placed between the two clamping blocks 22, and the clamping block 22 is fitted to the outer wall of the electrode rod 3, so as to limit the descending trajectory of the electrode rod 3, so that the electrode rod 3 can be prevented from shaking when the electrode rod 3 is lowered and inserted into the furnace 11, thereby avoiding impact on the furnace 11, and when the electrode rod 3 is inserted into the electroslag for the first time for use, the clamping blocks 22 on both sides clamp the electrode rod 3 to make it stable, and the crane slightly releases the lifting rope 4, and the clamping blocks 22 now bear all the weight of the electrode rod 3 , so that the pressure sensor 17 will feedback a certain pressure value. After the electrode rod 3 is consumed, the value fed back by the pressure sensor 17 decreases. When the reduction reaches the threshold, the single-chip computer 14 will make the crane tighten the rope 4, and start the dual-axis motor 24 to drive the clamp 22 to loosen, and then the motor releases the rope 4 again, so that the electrode rod 3 drops again, so that the shortened electrode rod 3 is inserted into the electroslag again, and the amount of the crane releasing the rope 4 at a time is set in advance, so as to ensure that the electrode rod 3 will automatically drop after a certain amount of consumption each time, and ensure that the amount of filling is the same each time, so as to ensure that the electrode rod 3 can be used efficiently and the filling of the electrode rod 3 is automatically controlled.

[0036] In addition, the components included in the electric slag hollow remelting smelting device for stainless seamless steel pipes of the utility model are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel in this field through technical manuals or through conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and compatible monitoring computers and power supplies, are connected through wires. The specific connection means should refer to the following working principle. The electrical connection is completed in the working order of each electrical component. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principles and processes, and no longer explains the electrical control.

Claims

1. An electroslag hollow remelting smelting device for stainless seamless steel pipes, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a furnace (11), the top of the furnace (11) is plugged with an electrode rod (3), the top of the electrode rod (3) is connected to a suspension rope (4), the outer end of the suspension rope (4) is connected to a crane, a support plate (12) is fixed to one side of the top of the base (1), a connecting block (13) is connected to one side wall of the support plate (12), the outer end of the connecting block (13) is fixedly connected to an adjustment plate (2), both sides of the outer wall of the adjustment plate (2) are connected to movable plates (21), the inner side of the movable plate (21) is fixed with a clamping block (22), and the two clamping blocks (22) are clamped on the outer wall of the electrode rod (3).

2. The electroslag hollow remelting smelting device for stainless seamless steel pipe according to claim 1, characterized in that: A strip groove is formed on one side wall of the adjustment plate (2), a dual-axis motor (24) is fixed in the middle of the inner cavity of the strip groove, both ends of the dual-axis motor (24) are fixedly connected with a screw rod (25), the outer end of the screw rod (25) is rotatably connected to the end surface of the inner cavity of the strip groove, the outer wall of the screw rod (25) is sleeved with an adapted screw rod slider (23), and the outer wall of the screw rod slider (23) is fixedly connected to the corresponding movable plate (21).

3. The electroslag hollow remelting smelting device for stainless seamless steel pipe according to claim 1, characterized in that: A limit slide groove (15) is provided on the upper side of one side wall of the support plate (12); an adapted limit slide block (16) is inserted into the inner cavity of the limit slide groove (15); a pressure sensor (17) is connected to the bottom of the limit slide block (16); the tail end of the pressure sensor (17) is fixedly connected to the bottom of the limit slide groove (15); the outer wall of the limit slide block (16) is fixedly connected to the connecting block (13); and a single-chip computer (14) is fixedly connected to the outer wall of the support plate (12).

4. The electroslag hollow remelting smelting device for stainless seamless steel pipe according to claim 1, characterized in that: An arc groove is provided on one side wall of the two clamping blocks (22) corresponding to the electrode rod (3).

5. The electroslag hollow remelting smelting device for stainless seamless steel pipe according to claim 1, characterized in that: The tail end of the suspension rope (4) is hung via a hanging buckle and a suspension ring at the top of the electrode rod (3).

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