The service scenarios for refractory materials are becoming increasingly demanding. High-end products such as magnesia-carbon bricks for steelmaking electric furnaces, high alumina bricks for cement rotary kilns, and special-shaped bricks for petrochemical cracking furnaces not only require uniform body density but also strict control over dimensional errors and positional tolerances. Insufficient dimensional accuracy can lead to excessive joint gaps during masonry, causing high-temperature gas leakage and lining spalling; positional deviations can result in assembly interference and reduced overall structural stability.
Industry data shows that traditional friction presses typically have dimensional errors of ±1mm in the refractory products they form, which cannot meet the demands of high-end applications. While ordinary hydraulic presses have certain pressure control capabilities, they suffer from lagging response and low positioning accuracy, making them unsuitable for the precise "exhaust - compact - finish" process of refractory materials. Against the backdrop of the global refractory industry's shift towards high-end and customized production, high-precision forming equipment has become a core competitive edge for enterprises to break through market barriers.
Zhengzhou Haloong's HLDS series Internet of Things servo numerical control screw press, as a patented national product, features direct drive technology with permanent magnet synchronous servo motors, combined with a full closed-loop control system and hydrostatic transmission structure, to establish a triple-precision control system of "force - position - speed", reducing the dimensional error of refractory forming to ±0.1mm and achieving a repeat positioning accuracy of ±0.02mm, completely solving the precision issues of traditional equipment.
By adopting a direct drive design with permanent magnet synchronous servo motors, it eliminates the traditional clutch and flywheel structure, shortening the transmission chain by 80% and eliminating the precision loss caused by mechanical clearance. Equipped with high-precision displacement and pressure sensors, it collects real-time data on the position and pressure of the slider, forming a millisecond-level closed-loop feedback. The pressure output accuracy reaches ±1%, and the slider position accuracy is up to 0.01mm. It can digitally preset the striking force, number of strikes, speed, and stroke, enabling a stepwise process of "light pressure exhaust - medium pressure compaction - fine pressure shaping", ensuring that each body has highly consistent forming parameters.
It breaks through the structural bottom dead center limitation of traditional equipment, applying a sequential forging mode to precisely press the body multiple times, completely avoiding local overpressure or underpressure caused by raw material size deviations and uneven temperatures. For complex products such as special-shaped bricks, honeycomb lattice bricks, and burner combination bricks, the force and displacement of each press can be flexibly adjusted to ensure uniform force application during the body's deformation process, effectively controlling warping and other positional errors, and maintaining the same forming accuracy standards as conventional products for complex structures.
It uses a fully enclosed hydrostatic screw, nut, and bearing transmission, forming a stable oil film during operation and combining with an automatic forced lubrication system to minimize the wear of transmission components. The service life of the equipment is twice that of ordinary screw presses. The high stability of the transmission system ensures that the forming accuracy does not decline during long-term continuous production, and the dimensional consistency of products within and across batches remains at an extremely high level, significantly reducing the costs of post-processing and sorting.
Equipped with Haloong's intelligent production management system, it can be integrated with automatic feeding, precise weighing, mold release agent spraying, and part transfer equipment to build a fully automated production line. Through a touch screen, process parameters can be stored, called up, and modified, supporting over 100 process recipes, enabling "foolproof" operation and eliminating the reliance on skilled operators, as well as the influence of human factors on forming accuracy. It also supports remote monitoring and parameter adjustment, collecting forming data in real time to provide a scientific basis for precision optimization.
When the slider approaches the bottom dead center, its speed is extremely fast, allowing for fine pressure shaping to be completed instantly before the raw material cools, reducing the contact time between the mold and the body. This not only minimizes raw material shrinkage and deformation but also lowers the temperature fluctuation of the mold, extending its service life by more than 30%. In high-speed forming mode, the equipment can still maintain micron-level positioning accuracy, achieving a dual breakthrough of "high precision and high efficiency", helping enterprises seize the initiative in the high-end refractory materials market. As a leading enterprise in the field of servo screw presses, Zhengzhou Haloong has always been committed to the mission of "driving industrial upgrading through technological innovation". For 46 years, it has been dedicated to the research and development and manufacturing of refractory materials forming equipment. From the first generation of mechanical presses to the third generation of servo direct drive presses, it has continuously led the technological transformation of the industry.