Refractory slab bricks can be classified into ordinary slab bricks, submerged entry nozzle slab bricks, and long nozzle slab bricks based on their applications. The raw materials are mostly high-quality refractory materials such as high alumina, magnesia-carbon, and alumina-carbon, mixed with special binders. The forming process of these bricks is highly specialized - the structure of the slab bricks is mostly plate-shaped or sheet-shaped, with extremely high requirements for uniform thickness, and precise steel flow holes need to be reserved. The control of the density and porosity of the green body is extremely strict (the porosity of high-quality slab bricks needs to be controlled below 12%, and the density should not be less than 2.8g/cm³). At the same time, the continuous casting process has extremely high requirements for the dimensional accuracy of the slab bricks. Even minor dimensional deviations can lead to poor sealing of the sliding nozzle, causing steel leakage and safety accidents. With the global steel industry's transformation towards high efficiency, purity, and greenness, the quality requirements for refractory slab bricks continue to rise. High density, low porosity, no cracks, precise dimensions, and stable batch production have become the hard standards for the qualified release of refractory slab bricks.

Compared with traditional forming equipment, the servo screw press, with its core advantages of digitalized precise pressure control, flexible pressure transmission, and stable batch production, has become the best choice to solve the forming problems of refractory slab bricks. It can not only completely solve the shortcomings of traditional equipment such as uneven pressure application, large dimensional deviations, and incomplete exhaust, but also ensure the consistency of batch production, achieving full density of the green body and precise dimensions, perfectly meeting the core requirements of the forming process of refractory slab bricks, helping refractory slab brick enterprises break through quality bottlenecks and expand into high-end markets.

Relying on 45 years of experience in the research and development and manufacturing of refractory forming equipment, Zhengzhou Haloong has deeply integrated the third-generation permanent magnet synchronous servo direct drive technology with the semi-dry forming process of refractory slab bricks, and combined with the core demands of refractory slab bricks - plate-shaped structure, high precision, high density, and stable batch production - to create a dedicated servo screw press for refractory slab bricks. It benchmarks against the global high-end equipment level, with "precise pressure control, flexible pressure transmission, and intelligent stable production" as its core, solving problems such as density inhomogeneity and stress cracks, providing a guarantee for the forming quality of refractory slab bricks, and becoming the preferred equipment for refractory slab brick enterprises at home and abroad.

It adopts a permanent magnet synchronous servo motor direct drive design, eliminating the traditional clutch and gear transmission structure, with a short transmission chain and low energy loss. It is equipped with Haloong's independently developed intelligent pressure control system, which can precisely preset the pressure energy, speed, and frequency through digital programs, with a repeatable control accuracy of pressure energy ≤ ±1%, far exceeding the industry average. It achieves "full-area precise uniform pressure application", precisely matching the pressure requirements of the plate-shaped structure and the area around the steel flow hole of refractory slab bricks. According to the characteristics of the slab brick forming process, it intelligently matches a three-stage forming process: "light pressure exhaust - medium pressure uniform material distribution - heavy pressure densification". In the light pressure stage, it slowly applies pressure to completely expel the internal air of the raw materials, avoiding the formation of cracks due to residual air bubbles. In the medium pressure stage, it uniformly applies pressure at a constant speed to promote the uniform distribution of refractory material particles, eliminating density differences that cause uneven thickness. In the heavy pressure stage, it precisely controls the pressure, flexibly adjusting the pressure size according to the thickness of the slab brick and the size of the steel flow hole, achieving full density of the green body (the density is increased by more than 18% compared to traditional equipment), while ensuring precise dimensions, with an error controlled within ±0.3mm, completely eliminating dimensional deviations, delamination, and layer cracking defects. The product qualification rate of refractory slab bricks is stably above 99.5%, perfectly meeting the quality requirements of high-end steel enterprises.

It breaks through the structural bottom dead center limitation of traditional equipment and adopts a step-by-step forging mode. According to the different thicknesses, different steel flow hole sizes, and different raw material ratios of refractory slab bricks, it can flexibly adjust the stroke of the slider, the pressure application angle, and the pressure size, without worrying about the problem of uneven pressure application caused by raw material size deviations or plate-shaped structures. Whether it is ordinary sliding board bricks, submerged entry nozzle sliding boards, or sliding boards of different specifications and lengths, they can all achieve precise and uniform force application, ensuring that the entire surface of the green body, as well as the area around the steel flow holes, have consistent density and accurate dimensions, eliminating the risk of cracks and deformations caused by over- or under-pressurization. Meanwhile, the equipment can flexibly adapt to green bodies of different compression ratios without the need for frequent adjustments to the equipment structure. Coupled with a rapid mold changing system, mold replacement is convenient and efficient, significantly reducing production preparation time. It can meet both small-batch customized production and large-scale mass production needs, helping enterprises expand their product range of refractory sliding boards.

The equipment adopts a fully enclosed static pressure screw, nut, and bearing transmission system, forming a stable oil film during operation for protection. Combined with an automatic forced lubrication system, it effectively reduces the wear of transmission components, ensuring continuous and stable pressure transmission without energy loss or pressure drop. This perfectly meets the strict requirements for pressure stability and flexibility in the formation of refractory sliding boards. Compared with the rigid transmission of traditional equipment, the static pressure transmission of the Haloong servo screw press can achieve flexible pressure transmission, avoiding stress concentration at the edges of the sliding board and around the steel flow holes, effectively eliminating the risk of cracks and deformations in the green body. At the same time, the transmission is stable, and the equipment operates with minimal vibration, further ensuring the uniformity, consistency, and dimensional accuracy of the green body formation of refractory sliding boards, eliminating formation risks from the process level. Additionally, the transmission chain is short, the structure is simple, and it is easy to maintain and repair, reducing the later maintenance and operation costs by more than 40% compared to traditional equipment, meeting the needs of large-scale and low-cost production of refractory sliding boards.

Relying on Haloong's 45 years of experience in refractory material forming technology, the servo screw press is equipped with a dedicated database of forming parameters for refractory sliding boards, covering different materials (high alumina, magnesia-carbon, alumina-carbon), different specifications, and different thicknesses of sliding boards. It can intelligently customize forming programs and pressure parameters based on customer needs and the characteristics of refractory raw materials from different origins, eliminating the need for frequent manual adjustments and reducing the impact of human factors on forming accuracy. For the batch production of sliding boards, the equipment can achieve one-click invocation and batch replication of forming parameters, ensuring consistent density, dimensions, and density uniformity for each batch and each product, with a density variation coefficient controlled below 1.2%, perfectly meeting the batch purchasing needs of high-end steel enterprises. At the same time, it is equipped with an intelligent detection and early warning function, which can monitor forming parameters in real time and correct pressure deviations promptly, further ensuring the stability of batch production.

Equipped with the intelligent production management system independently developed by Zhengzhou Haloong, it is equipped with standardized industrial communication interfaces, which can be seamlessly linked with the automatic feeding system, raw material proportioning system, and green body detection equipment for refractory sliding boards, building an intelligent production line for the entire process of refractory sliding board formation, achieving unmanned control from "raw material entry - proportioning - pressing - detection - storage", significantly reducing labor input and meeting the industry's demand for rising labor costs. The system can collect data on forming pressure, speed, and dimensions in real time, dynamically adjust the pressing process, promptly correct pressure deviations, ensure uniform force application, and guarantee the density, dimensional accuracy, and consistency of the green body of refractory sliding boards; it also supports remote monitoring and parameter adjustment, facilitating domestic and foreign customers to manage production remotely, and promptly identify formation risks, further ensuring product quality. Moreover, the equipment adopts a "start on demand, sleep for energy saving" mode, saving more than 55% of energy compared to traditional friction presses, helping refractory sliding board enterprises achieve multiple goals of "energy conservation, cost reduction, high quality, and high efficiency", in line with the global trend of green production.

The quality of refractory sliding boards directly affects the safety, efficiency, and purity of steel liquid in the continuous casting process of steel, and the forming equipment is the core guarantee of quality. As the global steel industry transitions towards high-end, green and efficient development, the quality requirements for refractory sliding board bricks continue to rise. High-performance, long-life and batch-stable sliding board bricks have become the mainstream demand in the industry, and this has also put forward higher demands for the precision, intelligence and stability of forming equipment. Zhengzhou Haloong has been deeply engaged in the field of refractory forming equipment for 45 years, always adhering to the concept of "starting from design, excelling in process, emphasizing processing and achieving success in assembly". Relying on technological progress, with strict process regulations, complete testing methods and a perfect management system, it continuously promotes technological innovation of servo screw presses, focuses on the core pain points of refractory sliding board brick forming, and creates exclusive intelligent solutions.