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English Views: 0 Author: Site Editor Publish Time: 2023-12-06 Origin: Site
The application of roller press technology began in the 1980s, mainly used in the cement and ore industries, and gradually became a key equipment in production processes. The core components of roller press are two rollers. Currently, the rollers of roller press on the market are mostly welding roller surfaces and centrifugal casting composite roller surfaces. Due to the direct contact between the rollers and the material, under strong extrusion pressure, the roller surface will withstand severe abrasive wear and plow groove wear, At the same time, the roller surface will produce squeezing pits, which can lead to fatigue wear of the roller surface material and seriously affect the normal operation of the equipment.
The column nail roller surface is the latest roller surface technology developed to adapt to materials with high hardness and wear. The column nail roller surface adopts the technology of embedding column nails on the mother roller sleeve. The column nails are made of tungsten cobalt hard alloy high-temperature sintering, with a hardness of HRC67 or above. It overcomes the disadvantage of the original welding roller surface wear rate being too fast, and is particularly suitable for roller grinding of cement raw materials, clinker, and metal ores, Its wear resistance and service life have been greatly improved.
Our company is now offering a service to replace column nail roller sleeves with roller presses, mainly targeting the usage of roller presses from manufacturers such as Chengdu Lijun and Hefei Design Institute. Based on the different usage conditions of customers, we will transform the original welding or composite rollers into column nail rollers to meet their production needs with the most economical and effective products and services.
Performance comparison of welding roller, composite roller, and column nail roller in roller press
Welding roller: The most common application is that the roller sleeve body is made of low-carbon alloy steel and forged as a whole. The surface is welded to the roller sleeve with wear-resistant welding material, mainly divided into bottom layer, transition layer, and hard surface layer. The welding process is relatively complex, and the wear-resistant layer wears out blocks, resulting in long repair downtime.
Composite roller: By using centrifugal casting technology, the structural defects of the casting have been improved to a certain extent. The inner and outer layers are metallurgical combined, which has the characteristics of hard surface and tough core. However, the middle pressure of the roller press surface is high, and the pressure at both ends is low, resulting in saddle shaped wear of the roller surface, increased gap in the middle of the roller surface, and poor welding performance of the centrifugal casting composite roller surface. The roller can only be repaired by grinding method, which will inevitably cause a decrease in the diameter of the roller.
Column nail roller: The matrix is made of high-strength alloy steel, which has high hardness after quenching and tempering treatment. The wear-resistant layer is made of tungsten cobalt hard alloy nails and embedded on the matrix. The size and gap of the column nails can be designed and arranged, and the hardness is very high, generally above HRC67. Compared to the surface of the overlay welding roller and the centrifugal casting composite roller, the hardness is much higher. The matrix of the column nail roller surface can be well protected by the formed material lining
As a manufacturer of cement machinery and equipment, Shandong Keli Electromechanical Engineering Co., Ltd. is constantly strengthening management innovation and product innovation, while also striving to enhance its own service innovation, promoting the continuous improvement of the enterprise's service level. Over the years, in cooperation with major cement enterprises such as Zoomlion, Shanshui, Conch, and Tongli, the company has not only significantly improved the quality of its products, but also strengthened its service awareness and level, further winning the trust and friendship of customers. We adhere to customer centricity, committed to service and product innovation, and are brave enough to participate in healthy market competition, meeting customer production needs with the most economical and effective products and services.
