The core raw material of corundum bricks is corundum particles (brown corundum, white corundum, etc.). These particles have high hardness and poor fluidity, and the requirements for molding pressure, exhaust effect, and density uniformity are far higher than those of ordinary refractory materials. During the molding process, many industry pain points often occur, seriously restricting the quality upgrade of the products: Firstly, the high hardness and large friction coefficient of corundum particles make it difficult for traditional pressure machines to precisely control the pressure and stably release energy, resulting in incomplete expulsion of internal pores in the green body, failure to meet density standards, and a density difference of more than 15% between the edge and the center, which can lead to problems such as cracks and peeling at high temperatures. Secondly, the particle size distribution and raw material characteristics of different types of corundum bricks (brown corundum, white corundum, chrome corundum, etc.) vary greatly, and traditional equipment cannot precisely adapt, easily causing defects such as overpressure corner breakage, underpressure porosity, or surface material deficiency, making it difficult to improve the qualification rate. Thirdly, the molding of corundum bricks requires precise control of the pressurization speed and frequency. Traditional equipment involves a lot of manual intervention, with large parameter fluctuations, and poor density consistency within the same batch of products, which cannot meet the requirements of standardized and large-scale production of high-end corundum bricks. Fourthly, the raw material cost of corundum is relatively high, and traditional equipment has low raw material utilization and high rework losses, significantly increasing the production costs of enterprises. With the global high-temperature industry's transition towards high-end and green development, as well as the implementation of international rules such as the EU's carbon border adjustment mechanism, the demand for high-end corundum bricks has surged, and specialized molding equipment has become the key for refractory material enterprises to break through development bottlenecks and capture market share.

Zhengzhou Haloong, relying on 45 years of experience in equipment research and manufacturing, combined with the raw material characteristics, molding process key points, and industry pain points of corundum bricks, has deeply optimized the core technology of servo screw press machines, creating a specialized molding solution for corundum bricks. It breaks through the technical limitations of traditional equipment and, with the core logic of "exclusive customization + precise pressure control + intelligent adaptation", becomes the core support for the quality upgrade of corundum bricks, assisting global refractory material enterprises in breaking through the molding bottleneck and producing high-density, high-density uniformity, and high consistency high-end corundum bricks, breaking the reliance on imported equipment for high-end corundum brick molding, and promoting the advancement of China's refractory material industry to the international leading level.

Zhengzhou Haloong's specialized servo screw press machine for corundum bricks, as a national patent product, adopts the third-generation permanent magnet synchronous servo motor direct drive technology, aligning with the global high-end corundum brick molding equipment level. It is comprehensively customized and optimized in response to the characteristics of high hardness and difficult molding of corundum brick particles, as well as strict performance requirements, becoming the "exclusive weapon" for high-end corundum brick molding. It is suitable for the molding needs of various specifications of corundum bricks (standard bricks, special-shaped bricks, large corundum prefabricated blocks, etc.), assisting domestic and foreign refractory material enterprises in achieving the production goals of "high density, high consistency, low loss, and high efficiency", demonstrating the professionalism and innovation of Haloong equipment.

 In response to the raw material characteristics of different types of corundum bricks (brown corundum, white corundum, chrome corundum, etc.) and different particle size distributions, the pressurization mechanism and molding program are custom-tailored. The screw speed and slider stroke are optimized to adapt to the high hardness and poor fluidity of corundum particles, avoiding problems such as particle agglomeration and poor exhaust. At the same time, according to the specifications and dimensions of corundum bricks (from standard bricks to large prefabricated blocks), custom molds and adapter structures are designed to ensure uniform pressure transmission to all parts of the green body, eliminating molding defects such as edge material deficiency and center porosity, and ensuring the quality of corundum brick molding from the source, making every corundum brick meet the requirements of industry standards such as GB/T 2988-2012.

It overcomes the shortcoming of lagging pressure control in traditional equipment, adopting a permanent magnet synchronous servo motor direct drive design, discarding traditional clutch and gear transmission structures. The transmission chain is short and energy loss is low. The pressurization energy can be precisely preset through digital programs, with a repeat control accuracy of ≤±1%, far exceeding the industry average. In response to the forming requirements of corundum bricks, a three-stage forming process of "light pressure exhaust - medium pressure shaping - heavy pressure densification" is specially set, which thoroughly eliminates the pores between corundum particles, allowing the corundum particles to be closely combined. This can increase the volume density of corundum bricks to ≥2.3g/cm³, control the density variation coefficient to below 1.5%, and reduce the porosity to below 15%. This significantly improves the high-temperature stability, erosion resistance and wear resistance of corundum bricks, extending their service life by more than 40% and reaching the quality standards of international high-end corundum bricks. The design without a fixed bottom dead center allows for flexible adjustment of the pressing force and stroke according to the characteristics of corundum raw materials, avoiding over-pressing corner breakage or under-pressing porosity, and further ensuring the consistency of forming.

The fully enclosed static pressure screw, nut and bearing transmission structure forms a stable oil film during operation, combined with a fully automatic forced lubrication system, effectively reducing friction loss during the transmission process. The equipment wear is reduced by more than 70% compared to ordinary screw presses, and the service life is increased by more than one time. The transmission structure operates smoothly with low vibration and noise, enabling 24-hour continuous and stable production, avoiding fluctuations in pressing parameters due to equipment vibration or failure, and ensuring the consistency of density and compactness of corundum bricks in the same batch and different batches. This solves the problem of "large batch differences" in traditional equipment. It is equipped with a dual braking protection device. When power is cut off or an emergency stop occurs, the slider automatically rises to the upper limit point, eliminating the risk of jamming and safety accidents, providing double protection for the large-scale and standardized production of corundum bricks and helping enterprises build a high-end corundum brick brand.

It is equipped with an intelligent production management system independently developed by Zhengzhou Haloong, with standardized industrial communication interfaces, which can be seamlessly connected with upstream and downstream equipment such as automatic feeding systems, raw material proportioning systems, and green body detection equipment, achieving full automation and digital control of the corundum brick forming process. The system has a built-in database of forming parameters for different types of corundum bricks, which can automatically adjust the pressing parameters, striking times and speeds according to the characteristics of raw materials, eliminating the need for frequent manual adjustments. The operation is simple and easy to learn, reducing parameter fluctuations and forming defects caused by manual intervention. It supports remote monitoring and parameter adjustment, facilitating domestic and foreign customers to manage production remotely, and real-time collection of forming data to support process optimization. At the same time, the equipment operates efficiently, with the forming qualification rate of corundum bricks stably increasing to over 99%, and the raw material utilization rate increasing to over 99%, significantly reducing the rework loss of unqualified green bodies and the waste of corundum raw materials, further reducing the production costs of enterprises.

It adopts a "start on demand, sleep for energy saving" mode. The servo motor only operates during the forming process, and stops and sleeps during the feeding and demolding processes, without any unnecessary power consumption. Compared with traditional friction presses, it saves more than 55% of energy, with a motor efficiency of ≥95%, meeting the global carbon reduction requirements and the green transformation needs of the refractory industry. When the equipment approaches the bottom dead center, the slider speed is extremely fast, completing the compaction forming in an instant before the corundum raw materials cool down. The contact time with the mold is short, the mold temperature fluctuation is small, and the service life is extended by 30%, significantly reducing the mold wear cost. The efficient and energy-saving operation mode enables enterprises to improve the quality of corundum bricks while achieving multiple goals of "energy conservation, cost reduction and efficiency improvement", enhancing their core competitiveness in domestic and international markets.

As a core supporting industry for high-temperature industries, the refractory industry is an important foundation for the high-quality development of heavy industries such as steel, glass and petrochemicals. Corundum bricks, as the core representative of high-end refractories, their quality improvement is directly related to the energy conservation and consumption reduction, safe production and sustainable development of global high-temperature industries. Currently, the global refractory industry is accelerating its transformation towards high-end, refined and green, and high-density, high-stability and long-life corundum bricks have become the mainstream demand in the market. The professionalism and technical level of forming equipment directly determine the core competitiveness of enterprises.