Composite deoxidizer adding device for electroslag remelting

Abstract

The utility model relates to a composite deoxidizer adding device for electroslag remelting, which comprises a consumable electrode, a wire feeder, an operating platform and a lead frame, grooves are arranged on two sides of the consumable electrode, the operating platform is arranged above the consumable electrode, the wire feeder is mounted on the operating platform, the lead frame is connected with the operating platform, and the consumable electrode is connected with the lead frame. And the wire feeding machine can feed the composite deoxidizer alloy wire into the molten pool along the groove through the lead frame. The device has the advantages that the structure is simple and reasonable, a deoxidizing agent can be stably added into a molten pool in the electroslag remelting process, double-channel adding of different types of deoxidizing agents is achieved, the adding amount of the deoxidizing agent can be adjusted online in real time according to the conveying speed of a wire feeding machine, molten steel oxygenation in the electroslag remelting process is effectively controlled, and the production efficiency is improved. Stable control over product components is guaranteed, effective deoxidation is achieved, the internal quality of electroslag steel ingots is improved, and the production cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of electroslag remelting, and particularly relates to a composite deoxidizer addition device for electroslag remelting. Background Technology

[0002] Electroslag remelting (ESR) technology, as a method for smelting high-quality steel ingots, possesses advantages that other steelmaking methods cannot replace due to its excellent metallurgical reaction conditions and unique crystallization method. However, the ESR process is generally carried out under atmospheric conditions, and in terms of oxygen content, ESR-remelted steel has a much higher oxygen content than vacuum arc remelted steel, which undergoes vacuum treatment. Therefore, effectively controlling the oxygen content in ESR-remelted steel is particularly important. However, due to poor deoxidation of the billet itself and unclean billet surface treatment, oxygen enrichment in ESR ingots is quite severe during the ESR process, usually exceeding 15 ppm, which restricts the improvement of the qualification rate of high value-added steel grades. In order to reduce the oxygen enrichment during the ESR process, the surface cleanliness of the consumable electrode was controlled. By implementing measures such as grinding with a grinding wheel or shot peening to remove inclusions such as iron oxide scale from the surface of the consumable electrode, oxygen enrichment in ESR was effectively controlled, but the oxygen enrichment was still above 10 ppm, and the effect did not reach the expected target level of 5-8 ppm. Therefore, deoxidizers need to be added during the electroslag remelting process to control oxygenation. However, the following problems exist in the current deoxidizer addition process: (1) Deoxidizers are burned off during addition, with a utilization rate of only 15%~20%, making them unusable; (2) When a single deoxidizer comes into contact with the molten slag, it easily interacts with the oxide components in the slag, is oxidized, and enters the slag; (3) The addition method is unscientific. Currently, the deoxidizer addition method is a combination of silo weighing and manual input, which restricts the efficiency of deoxidizer use and affects product quality. The reason for this is that deoxidizing elements cannot effectively enter the molten pool, resulting in low deoxidation efficiency. Summary of the Invention

[0003] To overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a composite deoxidizer addition device for electroslag remelting, which ensures that the deoxidizer can be stably and controlled to be added to the molten pool during the electroslag remelting process, thereby achieving effective deoxidation, improving the internal quality of electroslag steel ingots and reducing production costs.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] A composite deoxidizer addition device for electroslag remelting includes a consumable electrode, a wire feeder, an operating platform, and a lead wire frame. The consumable electrode has grooves on both sides. The operating platform is located above the consumable electrode. The wire feeder is installed on the operating platform. The lead wire frame is connected to the operating platform. The wire feeder can feed the composite deoxidizer alloy wire into the molten pool through the grooves via the lead wire frame.

[0006] The groove is a through groove with a rectangular cross-section.

[0007] The grooves are symmetrically distributed around the central axis of the consumable electrode.

[0008] It also includes slide rails and hydraulic cylinders. The operating platform is slidably connected to the slide rails, and the piston rod of the hydraulic cylinder is connected to the operating platform.

[0009] The lead frame includes guide cylinders and connecting rods. Two guide cylinders are fixedly connected to the operating platform through the connecting rods. The spacing between the guide cylinders is the same as the groove spacing on both sides of the consumable electrode.

[0010] The connecting rod is connected to the operating platform by a reinforcing rib.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The composite deoxidizer addition device for electroslag remelting has a simple and reasonable structure, which can ensure that the deoxidizer can be stably added to the molten pool during the electroslag remelting process. It can realize the dual-channel addition of different types of deoxidizers, and can adjust the amount of deoxidizer added in real time online according to the transmission speed of the wire feeder. It can effectively control the oxygenation of the molten steel during the electroslag remelting process, ensure the stable control of product composition, achieve effective deoxidation, improve the internal quality of electroslag steel ingots, and reduce production costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 yes Figure 1 A sectional view along line AA.

[0015] Figure 3 This is a connection diagram of the operating platform.

[0016] In the diagram: 1-Wire feeder; 2-Operating platform; 3-Composite deoxidizer alloy wire; 4-Consumable electrode; 5-Slide rail; 6-Hydraulic cylinder; 7-Guide cylinder; 8-Connecting rod; 9-Groove; 10-Crystallizer; 11-Slag pool; 12-Molten steel; 13-Electroslag ingot; 14-Reinforcing rib. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings. However, it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0018] See Figures 1-3A composite deoxidizer addition device for electroslag remelting includes a consumable electrode 4, a wire feeder 1, an operating platform 2, and a lead wire frame. The consumable electrode 4 has grooves 9 on both sides. The operating platform 2 is positioned above and to the side of the consumable electrode 4. The wire feeder 1 is mounted on the operating platform 2, and the lead wire frame is connected to the operating platform 2. The wire feeder 1 can feed the composite deoxidizer alloy wire 3 into the molten pool along the grooves 9 via the lead wire frame. A lead wire frame is positioned between the consumable electrode 4 and the wire feeder 1 to ensure that the composite deoxidizer alloy wire 3 can enter the molten pool along the grooves 9.

[0019] Among them, the groove 9 is a through groove with a rectangular cross-section. The grooves 9 are symmetrically distributed about the central axis of the consumable electrode 4.

[0020] The composite deoxidizer addition device for electroslag remelting also includes a slide rail 5 and a hydraulic cylinder 6. The operating platform 2 is slidably connected to the slide rail 5, and the piston rod of the hydraulic cylinder 6 is connected to the operating platform 2.

[0021] The lead frame includes guide cylinders 7 and connecting rods 8. Two guide cylinders 7 are fixedly connected to the operating platform 2 via the connecting rods 8. The spacing between the guide cylinders 7 is the same as the spacing between the grooves 9 on both sides of the consumable electrode 4, allowing the composite deoxidizer alloy wires 3 of two different compositions to smoothly enter the molten pool along the grooves 9. A reinforcing rib 14 connects the connecting rod 8 to the operating platform 2 to increase structural strength and reduce the swaying amplitude of the connecting rod 8.

[0022] When manufacturing the composite deoxidizer addition device for electroslag remelting, the consumable electrode 4 is first shot-blasted or acid-etched to ensure that its surface is free of defects such as slag inclusions, iron oxide scale, dirt, heavy scale, and scale. Then, grooves 9 are machined on the surface of the consumable electrode 4. The width of the grooves 9 is 15-20 mm, the depth is 10-20 mm, and the grooves 9 are continuous rectangular structures, numbered in pairs, symmetrically distributed around the center of the cross-section of the consumable electrode 4. The wire feeder 1 is installed on a movable operating platform 2, which can slide on the slide rail 5 and reciprocate under the drive of the hydraulic cylinder 6.

[0023] The composite deoxidizer alloy wire 3 is made of aluminum wire and silicon-calcium alloy wire. The aluminum wire and silicon-calcium alloy wire are loaded into the wire feeder 1 respectively, and then passed through the guide cylinder 7. Under the drive of the hydraulic cylinder 6, the guide cylinder 7 is moved above the consumable electrode 4. The bottom of the guide cylinder 7 is directly opposite the two grooves 9. The wire feeder 1 feeds the wire, and the aluminum wire and silicon-calcium alloy wire are transported to the molten steel 12 through the dual channels of the grooves 9 of the consumable electrode 4 respectively.

[0024] This invention enables the dual-channel addition of different types of deoxidizers and allows for real-time online adjustment of the amount of deoxidizer added based on the transmission speed of the wire feeder 1, effectively controlling the oxygenation of the molten steel 12 during electroslag remelting and ensuring stable control of the product composition.

Claims

1. A composite deoxidizer addition device for electroslag remelting, characterized in that, It includes a consumable electrode, a wire feeder, an operating platform, and a lead wire frame. The consumable electrode has grooves on both sides. The operating platform is located above the side of the consumable electrode. The wire feeder is installed on the operating platform. The lead wire frame is connected to the operating platform. The wire feeder can feed the composite deoxidizer alloy wire into the molten pool through the grooves via the lead wire frame.

2. The composite deoxidizer addition device for electroslag remelting according to claim 1, characterized in that, The groove is a through groove with a rectangular cross-section.

3. The composite deoxidizer addition device for electroslag remelting according to claim 1, characterized in that, The grooves are symmetrically distributed around the central axis of the consumable electrode.

4. The composite deoxidizer addition device for electroslag remelting according to claim 1, characterized in that, It also includes slide rails and hydraulic cylinders. The operating platform is slidably connected to the slide rails, and the piston rod of the hydraulic cylinder is connected to the operating platform.

5. The composite deoxidizer addition device for electroslag remelting according to claim 1, characterized in that, The lead frame includes guide cylinders and connecting rods. Two guide cylinders are fixedly connected to the operating platform through the connecting rods. The spacing between the guide cylinders is the same as the spacing between the grooves on both sides of the consumable electrode.

6. The composite deoxidizer addition device for electroslag remelting according to claim 5, characterized in that, The connecting rod is connected to the operating platform by a reinforcing rib.

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