High-quality refractory bricks are made from high-quality heavy refractory materials such as high alumina, magnesia-carbon, silica, and corundum, combined with special binders and formed through semi-dry material mixing. The forming process of these bricks is highly specialized - the brick bodies are mostly block-shaped or irregular block structures, large in volume and heavy in weight, with extremely strict requirements for the control of density, porosity, and compressive strength (the porosity of high-quality heavy refractory bricks needs to be controlled below 13%, the density should not be less than 2.7g/cm³, and the compressive strength at room temperature should be ≥80MPa). At the same time, high-temperature industries have extremely high requirements for the dimensional accuracy and batch consistency of heavy refractory bricks. Even minor dimensional deviations can lead to excessive gaps in the lining of kilns, causing leakage of high-temperature gases and molten materials, resulting in equipment damage or even safety accidents. As global industries transform towards high efficiency, green development, and large-scale production, the quality requirements for heavy refractory bricks continue to rise. High density, low porosity, high strength, no cracks, and batch stability have become the hard standards for the qualified production of heavy refractory bricks.
Compared with traditional forming equipment, the servo screw press, with its core advantages of digital precision pressure control, flexible pressure transmission, and batch stability, is the best choice to solve the forming problems of heavy refractory 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 and strength compliance of the green body, perfectly meeting the core forming requirements of heavy refractory bricks. It helps heavy refractory brick enterprises break through quality bottlenecks, expand into high-end markets, and promote the upgrade of refractory equipment from traditional mechanical transmission to digital and intelligent.
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 material forming process of heavy refractory bricks, and combined with the core demands of "block structure, high density, high strength, and batch stability" of heavy refractory bricks, to create a dedicated servo screw press for heavy refractory bricks. It benchmarks against global high-end equipment standards, with "precise pressure control, flexible pressure transmission, and intelligent stable production" as its core, solving problems such as density inhomogeneity and stress cracks, providing comprehensive protection for the forming quality of heavy refractory bricks. It has become the preferred equipment for heavy refractory brick enterprises at home and abroad, and its core performance can rival that of international high-end similar equipment.
It adopts a direct drive design with permanent magnet synchronous servo motors, eliminating traditional clutches and gear transmission structures. The transmission chain is short and energy loss is low. It is equipped with Haloong's independently developed intelligent pressure control system, which can precisely preset the pressure energy, speed, and number of applications through digital programs, with a repeatable control accuracy of energy ≤±1%, far exceeding the industry average. It achieves "full-area precise uniform pressure application", precisely matching the block structure and different part force requirements of heavy refractory bricks. According to the forming characteristics of heavy refractory bricks, 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 applies pressure at a constant speed to promote the uniform distribution of refractory particles, eliminating strength inhomogeneity caused by density differences. In the heavy pressure stage, it precisely controls the pressure, flexibly adjusting the pressure size according to the specifications of heavy refractory bricks and raw material ratios, achieving full-area densification of the green body (with a density increase of more than 18% compared to traditional equipment), while ensuring precise dimensions with an error control within ±0.3mm, completely eliminating defects such as dimensional deviations, delamination, layer cracking, and corner dropping. The product qualification rate of heavy refractory bricks is stably above 99.5%, and the compressive strength is 20% higher than that of products produced by traditional equipment, perfectly meeting the quality requirements of high-end high-temperature industrial enterprises and significantly extending the service life of heavy refractory bricks. It breaks through the structural bottom dead center limitation of traditional equipment and adopts a successive forging mode. According to the different specifications, shapes (standard bricks, special-shaped bricks, arch bricks) and raw material ratios of heavy-duty refractory bricks, it can flexibly adjust the slider stroke, pressing angle and pressure size. There is no need to worry about the uneven pressing caused by the size deviation of raw materials or the block structure. Whether it is ordinary heavy-duty standard bricks or large special-shaped heavy-duty refractory bricks, it can achieve precise and uniform force pressing, ensuring that the entire part and edge details of the blank have consistent density and accurate size, and eliminating the cracks and deformations caused by local over-pressing or under-pressing. At the same time, the equipment can flexibly adapt to the heavy-duty refractory brick blanks with different compression ratios without frequent adjustment of the equipment structure. Combined with a rapid mold changing system, the mold replacement is convenient and efficient, significantly reducing the production preparation time. It can not only meet the small-batch customized production but also adapt to the large-scale mass production needs, helping enterprises expand the product matrix of heavy-duty refractory bricks and meet the diversified market demands.
It adopts a fully enclosed static pressure screw, nut and bearing transmission. During operation, a stable oil film is formed for protection, and it is combined with a fully automatic forced lubrication system to effectively reduce the wear of transmission components, ensuring the continuous and stable transmission of pressure without energy loss or pressure attenuation. It perfectly meets the strict requirements of pressure stability and flexibility for the forming of heavy-duty refractory bricks. Compared with the rigid transmission of traditional equipment, the static pressure transmission of Haloong servo screw press can achieve flexible pressure transmission, avoiding stress concentration at the corners and special-shaped parts of heavy-duty refractory bricks, effectively eliminating the risks of cracks, deformations and corner drops in the blanks. At the same time, the transmission is stable, and the equipment operation vibration is small, further ensuring the uniformity, consistency and dimensional accuracy of the blank forming of heavy-duty refractory bricks, eliminating the forming risks from the process level. In addition, the transmission chain is short, the structure is simple, it is easy to maintain and repair, and the later operation and maintenance cost is reduced by more than 40% compared with traditional equipment, meeting the needs of large-scale and low-cost production of heavy-duty refractory brick enterprises and significantly improving the production efficiency of enterprises.

Relying on Haloong's 45 years of refractory material forming process experience, the servo screw press is equipped with a dedicated forming parameter database for heavy-duty refractory bricks, covering the forming parameters of different materials (high alumina, magnesia-carbon, silica, corundum), different specifications and different shapes of heavy-duty refractory bricks. According to customer needs and the characteristics of refractory raw materials from different origins, it can intelligently customize the forming program and pressing parameters, eliminating the need for frequent manual adjustments and reducing the influence of human factors on the forming accuracy. For the batch production needs of heavy-duty refractory bricks, the equipment can achieve one-click calling and batch replication of forming parameters, ensuring that the density, size, density and strength of each batch and each product remain consistent, with the density variation coefficient controlled below 1.2%, perfectly meeting the batch purchasing needs of high-end high-temperature industrial enterprises. At the same time, it is equipped with an intelligent detection and early warning function, which can monitor the forming parameters in real time and correct the pressure deviation in time, further ensuring the stability of batch production and solving the industry pain point of large quality fluctuations in batch production of traditional equipment.
Equipped with the intelligent production management system independently developed by Zhengzhou Haloong, it is equipped with standardized industrial communication interfaces and can be seamlessly linked with the automatic feeding system, raw material ratio system and blank detection equipment for heavy-duty refractory bricks, building an intelligent production line for the entire process of heavy-duty refractory brick forming, achieving unmanned control from "raw material entry - ratio - pressing - detection - storage", significantly reducing labor input and meeting the industry's demand for rising labor costs. This is highly consistent with the current trend of intelligent transformation in the refractory material industry and can help enterprises reduce 2/3 of the operators, significantly improving production efficiency. The system can collect data on forming pressure, speed and size in real time and dynamically adjust the pressing process to correct pressure deviations in time, ensuring uniform force pressing and guaranteeing the density, dimensional accuracy and consistency of the heavy-duty refractory brick blanks. It supports remote monitoring and parameter debugging simultaneously, facilitating domestic and foreign customers to manage production remotely and in real-time, identify potential problems in the forming process, and further ensure product quality. Additionally, the equipment adopts a "start on demand, sleep for energy saving" mode, which saves more than 55% energy compared to traditional friction presses. This helps heavy-duty refractory brick enterprises achieve multiple goals of energy conservation, cost reduction, high quality, and high efficiency, aligning with the global trend of green production and injecting impetus into the sustainable development of enterprises.
The quality of heavy-duty refractory bricks is directly related to the safety, efficiency, and service life of high-temperature industrial equipment, and forming equipment is the core guarantee of quality. As global industry transitions towards high-end, green, and efficient development, the quality requirements for heavy-duty refractory bricks continue to rise. High-performance, long-life, and batch-stable heavy-duty refractory bricks have become the mainstream demand in the industry, and this has also put forward higher requirements for the accuracy, intelligence, and stability of forming equipment. Zhengzhou Haloong has been deeply engaged in the field of refractory material forming equipment for 45 years, always adhering to the concept of "starting from design, excelling in process, focusing on processing, and achieving in assembly". Relying on technological progress, with strict process regulations, complete testing methods, and a sound management system, it continuously promotes technological innovation in servo screw presses, focuses on the core pain points of heavy-duty refractory brick forming, and creates exclusive intelligent solutions.