Steel billet slag scraping structure of continuous casting machine

Abstract

The utility model discloses a steel billet slag scraping structure of a continuous casting machine, which belongs to the technical field of metallurgical equipment and comprises a terminal roller way, a steel pusher, a water spraying unit and a scraping unit. The steel pushing machine is arranged between rollers of a terminal roller way and pushes the steel billet limited by the collision plate to move in the axial direction of the rollers; the water spraying unit and the scraping unit are sequentially arranged on the line along which steel is driven by a steel pusher to move, the water spraying unit is provided with a spray head for spraying water to the front end face of a steel billet, and the scraping unit is provided with a steel brush for scraping the front end face of the steel billet. The device is compact in structure, rapid cooling and efficient slag scraping treatment of the end face of a steel billet can be achieved, the adhesive force and definition of spray marks are remarkably improved, and the problem of furnace number confusion caused by spray mark falling is solved. The device is high in automation degree and stable in operation, can be seamlessly integrated with an existing continuous casting production line, and has good practicability and popularization value.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical equipment technology, and in particular relates to a slag scraping structure for steel billets in a continuous casting machine. Background Technology

[0002] In the steel production process, steel billets produced by continuous casting machines typically need to be marked with identification numbers on their end faces before being transported to the strip mill, in order to identify the furnace number of each billet. This marking process not only helps with product traceability and quality control in subsequent processing, but also improves the level of informatization and automation management of the entire production process, making it one of the key links in billet logistics management.

[0003] Currently, there are several problems in the process of marking the billet end face, the most prominent being that the marked characters are prone to peeling off, making the furnace number unidentifiable and increasing the risk of steel grade confusion. The root cause of this problem is that during the slow cooling process after continuous casting, a thick oxide scale forms on the surface of the billet. The marking operation is usually performed directly on this untreated oxide scale, resulting in insufficient adhesion of the painted characters, which easily peel off as the oxide scale detaches. Furthermore, the presence of the oxide scale can also affect the uniformity of the marking coating, reducing the clarity of the markings and further impacting identification accuracy. These problems not only affect the efficiency of billet logistics management but also pose significant risks to quality traceability and product consistency control in downstream processes. Utility Model Content

[0004] To address the problem that the markings on the end face of existing steel billets are easily unrecognizable due to oxide scale peeling off, leading to confusion of furnace numbers and difficulties in product traceability, this utility model provides a slag scraping structure for continuous casting machine billets.

[0005] This utility model is implemented as follows: a slag scraping structure for a continuous casting machine billet, characterized in that it includes a terminal roller conveyor, a pusher, a water spraying unit, and a scraping unit. The end of the terminal roller conveyor is provided with a ram to limit the front end of the billet. The pusher is located between the rollers of the terminal roller conveyor and pushes the billet, limited by the ram, to move axially along the rollers. The water spraying unit and the scraping unit are sequentially located along the line of movement of the billet driven by the pusher. The water spraying unit is provided with a nozzle for spraying water onto the front end face of the billet, and the scraping unit is provided with a steel brush for scraping the front end face of the billet.

[0006] In the above technical solution, preferably, a side bracket is included for fixing the water spraying unit and the scraping unit. The scraping unit is mounted on the side bracket by a spring, and the spring applies a spring force to the scraping unit close to the front end face of the steel billet.

[0007] In the above technical solution, preferably, the scraping unit includes a scraping disc base and a steel brush fixed on the scraping disc base, wherein the steel brush forms a bristle layer on the front disc surface of the scraping disc base.

[0008] In the above technical solution, preferably, the water spraying unit includes vertically spaced water supply pipes fixed to the side support, and a nozzle is installed at the front end of the water supply pipe.

[0009] In the above technical solution, preferably, the side support and the water spraying unit and the scraping unit installed on the side support constitute a slag scraping assembly, and N slag scraping assemblies are provided at the end of the terminal roller conveyor along the moving direction of the pusher.

[0010] The slag scraping structure for continuous casting machine billets provided by this utility model has many advantages and significant effects.

[0011] The billet slag scraping structure for continuous casting machines provided by this utility model has many advantages, including high operational efficiency, stable processing effect, and strong structural adaptability. This structure sequentially sets up a water spray unit and a scraping unit along the billet's moving path. As the billet is pushed forward by the pusher, it first passes through the water spray unit, where its front surface is directionally sprayed and cooled, rapidly forming an oxide scale on the high-temperature billet surface. Subsequently, the billet enters the scraping unit, where a steel brush mechanically scrapes away the newly formed oxide scale. Compared to oxide scale formed under natural slow cooling conditions, the oxide scale generated in this method is easier to control, has weaker adhesion, and is easier to thoroughly remove, significantly improving removal efficiency. This structure not only effectively avoids problems such as insufficient adhesion and character detachment caused by residual oxide scale, ensuring the clarity and stability of the sprayed numbers, but also enhances the reliability of billet furnace number identification, helping to reduce the risk of steel grade confusion. Furthermore, this structure has a compact design and can be seamlessly integrated with existing continuous casting equipment, possessing good practicality and promising prospects for widespread application. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a top view showing the arrangement of the slag scraper assembly in this utility model. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0015] To address the problem that existing billet end-face markings are easily lost due to oxide scale flaking, leading to confusion in furnace numbers and difficulties in product traceability, this utility model provides a billet slag scraping structure for continuous casting machines. To further illustrate the structure of this utility model, a detailed description is provided below in conjunction with the accompanying drawings:

[0016] Please see Figure 1 A slag scraping structure for a continuous casting machine billet includes a terminal roller conveyor 1, a pusher 2, a water spraying unit, a scraping unit, and a side support 3.

[0017] The terminal roller conveyor is equipped with a ram plate 4 at its end to limit the front end of the billet. The terminal roller conveyor is an existing structure, mainly composed of several rollers arranged axially. Located at the end of the continuous casting machine production line, it carries and transports the billet, and its end is equipped with a ram plate to limit and position the front end of the billet. After the billet completes the continuous casting process, it falls onto the terminal roller conveyor and is limited by the ram plate, keeping its front end in a stable position. This facilitates precise pushing of the billet by the subsequent pusher, allowing the billet to sequentially pass through the water spraying unit and scraping unit in the marking preparation stage according to a set path.

[0018] The pusher is located between the rollers of the terminal roller conveyor and pushes the billet, which is limited by a ram, along the roller axial direction. As existing equipment, the pusher's function is to move the billet forward along the roller axial direction after it falls from the continuous casting machine onto the terminal roller conveyor and is positioned by the ram. This structure is one of the existing important conveying devices at the end of a continuous casting production line.

[0019] A water spraying unit and a scraping unit are sequentially arranged along the line of steel movement driven by the steel pusher. The water spraying unit is equipped with a nozzle that sprays water onto the front end face of the steel billet, and the scraping unit is equipped with a steel brush that scrapes the front end face of the steel billet. In this embodiment, specifically, the water spraying unit and the scraping unit are mounted on a side support. The scraping unit is mounted on the side support by a spring 5, which applies a spring force to the scraping unit close to the front end face of the steel billet. The scraping unit includes a scraping disc base 6 and a steel brush 7 fixed on the scraping disc base. The steel brush forms a bristle layer on the front disc surface of the scraping disc base. One end of the spring is fixed to the side support, and the other end is fixedly connected to the scraping disc base. The scraping unit, loaded by the spring, has a certain degree of self-adaptability, enabling it to adapt to steel billets of different sizes and with slight end face deformation, thus expanding its applicability and reducing the risk of damage to the end face of the steel billet. In this embodiment, the steel brush is a bundle of steel wires dispersed from steel wire ropes. Several bundles of steel wires are evenly connected on the plane of the scraping disc base corresponding to the front end face of the steel billet, forming a bristle layer with a certain density. When the billet, driven by the steel pusher, passes through the scraping unit, its front end interferes with the brush layer. The brush layer is integrally extruded and deformable, and its front end is scraped by the brush layer during the process of the billet passing through.

[0020] The water spraying unit includes vertically spaced water pipes 8 fixed to the side support, with nozzles installed at the front ends of the water pipes. The nozzles spray a vertical surface water curtain. The steel billet, driven by the steel pusher, passes through the water spraying unit before passing through the scraping unit. The vertical water curtain formed by the water spraying unit cools the ends of the steel billet.

[0021] The side support, along with the water spraying unit and scraping unit mounted on it, constitutes the slag scraping assembly. Two slag scraping assemblies are located at the end of the terminal roller conveyor along the moving direction of the pusher. Please refer to [link / reference]. Figure 2 The billet is pushed to the scraper assembly by a pusher, where the front face of the billet is first cooled and then scraped, followed by another cooling and scraping. This two-stage spraying and scraping process removes the oxide scale from the front face of the billet. The billet face with the oxide scale removed is then used for marking to ensure the markings remain effective. Using two sets of water spraying and scraping units sequentially increases the redundancy of the scraping process. Even if the first set is insufficient, the second set can still supplement the scraping, improving the overall stability and reliability of the treatment.

[0022] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A continuous caster slab skimming arrangement, characterised in that: The system includes a terminal roller conveyor, a steel pusher, a water spraying unit, and a scraping unit. The end of the terminal roller conveyor is equipped with a ram to limit the front end of the steel billet. The steel pusher is located between the rollers of the terminal roller conveyor and pushes the steel billet, which is limited by the ram, to move along the roller axis. The water spraying unit and the scraping unit are sequentially located along the line of movement of the steel billet driven by the steel pusher. The water spraying unit is equipped with a nozzle to spray water onto the front end face of the steel billet, and the scraping unit is equipped with a steel brush to scrape the front end face of the steel billet.

2. A continuous caster slab skimming arrangement according to claim 1, characterised in that: It includes a side bracket for fixing the water spraying unit and the scraping unit, the scraping unit being mounted on the side bracket by a spring, the spring applying a spring force to the scraping unit near the front end face of the billet.

3. A continuous caster slab skimming arrangement according to claim 2, characterised in that: The scraping unit includes a scraping disc base and a steel brush fixed on the scraping disc base, wherein the steel brush forms a bristle layer on the front disc surface of the scraping disc base.

4. The continuous caster slab scraper structure according to claim 3, characterized in that: The water spraying unit includes vertically spaced water pipes fixed to the side support, with nozzles installed at the front ends of the water pipes.

5. A continuous caster slab skimming arrangement according to claim 4, characterised in that: The side support, the water spraying unit and the scraping unit installed on the side support constitute a slag scraping assembly, and N slag scraping assemblies are provided at the end of the terminal roller conveyor along the moving direction of the pusher.

Images