Auxiliary tool for producing slag stopping plug of converter
The problem of core inclination in the production of converter slag plugs is solved through the central positioning frame and telescopic arm auxiliary tool, which improves the yield rate and equipment safety, and reduces the risk of equipment damage and production costs.
Patent Information
- Application Number
- CN202422581043.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-25
AI Technical Summary
During the production process of converter slag stopper plugs, the core inclination causes the hole position to not occupy the center, affecting molding, and even hitting the die head to damage the equipment, and the yield rate is low.
The auxiliary tools of the center positioning frame, telescopic arm and fixing screw are used to fix the core in the mold through the center positioning frame and telescopic arm to avoid tilting, and the combination of the bevel surface is matched with the mold to ensure the accurate position of the core.
Effectively prevent the core from tilting, improve the yield rate, reduce the risk of equipment damage, simplify operation, and reduce costs.
Smart Images
Figure CN223268683U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of refractory material production, in particular to an auxiliary tool for producing converter slag stoppers. Background Art
[0002] The converter steelmaking process is the most crucial part of the entire steelmaking process. Molten iron and scrap steel are fed into the converter, oxygen is then blown in, and a certain amount of slagging agent is added. The high-temperature molten iron reacts with the oxygen to form slag, which removes impurities such as phosphorus and sulfur from the molten iron, resulting in purified molten steel. Because slag is lighter than molten steel, it floats above the molten steel. At the end of the converter tapping process, eddies form at the tapping port, which can easily carry away the slag and contaminate the molten steel. Therefore, slag blocking is often required during converter tapping.
[0003] The slag stopper is widely used in major steel mills due to its advantages such as excellent slag stopping effect, simple use process and low manufacturing cost. Its structure includes two parts: a positioning rod (6) and a plug head (5). Figure 6 As shown, the positioning rod (6) is made of refractory castable wrapped with steel bars, and the plug (5) is a gyro-shaped refractory brick with three grooves on the side and a hole in the middle. The two are assembled to form a complete slag stopper. Its working principle is that when the converter is tapping steel, the slag stopper is put from the converter feeding port to the tapping port, and the positioning rod is inserted into the tapping port. The plug destroys the vortex formed by the molten steel at the tapping point, and the molten steel flows out slowly along the three grooves, while blocking the slag from entering the molten steel.
[0004] The plug head of the slag stopper is formed by machine pressing. Figure 7 The clay is poured into the mold, and the motor drives the mold head to repeatedly press until it is shaped into a brick. It is then dried in a kiln at 200°C. The mold contains a thin core in the middle to form a hole for the plug. In order to facilitate brick production, this core is usually made into a movable bottom. When the top brick is ejected from the mold, it will be taken out with the brick. After removal, it can be put back into the mold for continued use.
[0005] The problem existing in the current production process is that, since the bottom of the core (7) is movable and some gaps are left between the core and the mold to facilitate the removal of the core, after the clay is poured into the mold cavity, the core will be squeezed by the clay and will slightly tilt. In this way, the position of the hole in the brick is not in the center, which affects the installation of the subsequent positioning rod. In severe cases, the core may hit the die head, damaging the equipment and causing danger. Utility Model Content
[0006] The purpose of the utility model is to provide an auxiliary tool for producing converter slag plugs, which overcomes the shortcomings of the existing technology and can prevent the core of the slag plug from tilting during production, and avoid the problem that the position of the brick hole is not centered due to the core being squeezed by the mud material and slightly tilting, causing the core to hit the die head and damage the equipment and mold during the subsequent molding process, while improving the finished product rate of the plug.
[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:
[0008] An auxiliary tool for producing converter slag plugs is characterized in that it includes a center positioning frame, a telescopic arm and a fixing screw. The center positioning frame is evenly provided with three connecting ends around the circumference. Each connecting end is connected to a telescopic arm through a fixing screw. The telescopic arm is telescoped and fixed along the connecting end. A through hole is provided in the center of the center positioning frame.
[0009] Furthermore, an L-shaped handle is provided on the central positioning frame.
[0010] Furthermore, the telescopic arm is provided with a scale.
[0011] Furthermore, the outer end of the telescopic arm is provided with a bevel, which matches the inner edge of the top opening of the mold.
[0012] Furthermore, the connecting end is cylindrical and has a through slot therein. The inner cross-section of the through slot is I-shaped or dovetail-shaped, and the through slot matches the cross-section of the telescopic arm.
[0013] Furthermore, the fixing screw is a butterfly screw that is convenient for quick adjustment.
[0014] Furthermore, the diameter of the through hole matches that of the core.
[0015] Compared with the prior art, the beneficial effects of the present invention are:
[0016] 1) When in use, place the tool at the mold opening. There is a core placement port in the center of the tool. The core is positioned during the production of the slag plug, thereby avoiding the problem that the core is slightly tilted due to the squeezing of the mud material, resulting in the position of the brick hole not being in the center, causing the core to hit the die head and damage the equipment during the subsequent molding process;
[0017] 2) The tool is simple to operate, easy to use, low in cost and easy to obtain, and effectively solves the problem of the core not being centered, thereby protecting the equipment and improving the yield rate of the plug. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;
[0019] Figure 2 yes Figure 1 A top view of
[0020] Figure 3 This is a schematic diagram of the telescopic arm structure in an embodiment of the present utility model;
[0021] Figure 4 This is a schematic diagram of the use state of the embodiment of the utility model;
[0022] Figure 5 This is a schematic diagram of measuring the three-point aperture of the slag stopper in the embodiment of the present utility model;
[0023] Figure 6 This is a schematic diagram of the slag blocking plug structure in the prior art;
[0024] Figure 7 This is a schematic diagram of the position of the core in the mold in the prior art;
[0025] In the figure: 1-center positioning frame, 2-telescopic arm, 3-fixing screw, 4-mold, 5-plug, 6-positioning rod, 7-core, 8-auxiliary tool, 9-through hole, 10-handle, 11-scale, 12-inclined surface. DETAILED DESCRIPTION
[0026] The technical solutions of the present invention will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the specific embodiments required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some implementation methods of the utility model. For ordinary technicians in this field, other specific embodiments can be obtained based on these specific embodiments without paying creative work.
[0028] The components of the embodiments of the present invention generally described and shown in the specific embodiments herein can be arranged and designed in countless different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific embodiments is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention.
[0029] See Figure 1, is a schematic structural diagram of an embodiment of an auxiliary tool for producing converter slag plugs according to the utility model, comprising a center positioning frame 1, a telescopic arm 2 and a fixing screw 3. The center positioning frame 1 is evenly provided with three connecting ends around the circumference, and each connecting end is connected to a telescopic arm 2 through a fixing screw 3. The connecting end is cylindrical, with a through groove inside. The inner cross-section of the through groove is I-shaped or dovetail-shaped, and the through groove matches the cross-section of the telescopic arm 2. The telescopic arm 2 is telescopic and fixed along the connecting end. The center positioning frame 1 is provided with a through hole 9 in the center, and the diameter of the through hole 9 matches the core 7. A scale 11 is provided on the telescopic arm 2 to facilitate determination of the adjustment size. For ease of operation, an L-shaped handle 10 is provided on the center positioning frame 1. The fixing screw 3 adopts a butterfly screw that is convenient and quick to adjust. In order to achieve quick positioning, a bevel 12 is provided at the outer end of the telescopic arm 2, and the bevel 12 matches the inner edge of the top opening of the mold 4.
[0030] During use, according to the actual size of mold 4, adjust the extension lengths of the three telescopic arms 2 to the same, then tighten the fixing screws 3 to keep the through-hole 9 centered. During production, first place the movable-bottom core into mold 4, then pour the clay into the mold cavity. Then, insert the through-hole 9 of auxiliary tool 8 through core 7. The three telescopic arms 2 rest firmly against the edges of mold 4 to prevent movement, thus preventing core 7 from tilting. After adjusting the angle of core 7, lightly compact the clay manually, remove auxiliary tool 8, and proceed with mechanical pressing and molding.
[0031] For example, a refractory plant plans to produce approximately 5,000 slag plugs per month, requiring 12 loose-bottom cores. Furthermore, due to wear and impact caused by misaligned cores, five mold covers are consumed. Using this auxiliary tool, production has significantly improved the number of loose-bottom cores and mold covers, reducing consumption to seven and three, respectively.
[0032] At the same time, the three-point hole distances of the slag stoppers produced before and after the use of auxiliary tools were randomly checked, as shown in the following table:
[0033]
[0034] From the two sets of data before and after use, it can be seen that after using the auxiliary tool of the utility model, the deviation value of the hole distance at each point is also significantly reduced, indicating that the problem of the center hole not being in the center is significantly improved. Therefore, the utility model is worthy of vigorous promotion.
[0035] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An auxiliary tool for producing converter slag plugs, characterized in that: It includes a central positioning frame, a telescopic arm and a fixing screw. The central positioning frame is evenly provided with three connecting ends around the circumference. Each connecting end is connected to a telescopic arm through a fixing screw. The telescopic arm is telescoped and fixed along the connecting end. A through hole is provided in the center of the central positioning frame.
2. The auxiliary tool for producing converter slag plugs according to claim 1, characterized in that: An L-shaped handle is provided on the central positioning frame.
3. The auxiliary tool for producing converter slag plugs according to claim 1, characterized in that: The telescopic arm is provided with a scale.
4. The auxiliary tool for producing converter slag plugs according to claim 1, characterized in that: The outer end of the telescopic arm is provided with an inclined surface, which matches the inner edge of the top opening of the mold.
5. The auxiliary tool for producing converter slag plugs according to claim 1, characterized in that: The connecting end is cylindrical and is provided with a through slot therein. The inner cross section of the through slot is I-shaped or dovetail-shaped, and the through slot matches the cross section of the telescopic arm.
6. The auxiliary tool for producing converter slag plugs according to claim 1, characterized in that: The fixing screw is a butterfly screw that is convenient and quick to adjust.
7. The auxiliary tool for producing converter slag plugs according to claim 1, characterized in that: The diameter of the through hole matches that of the core.