Recently, a new breakthrough in refined production has emerged in the overseas powder metallurgy industry. Addressing core industry pain points including uneven particle size, oversize particles and poor forming stability in ultra-fine stainless steel powder granulation, a high-end powder manufacturing client in India has achieved comprehensive process iteration with the support of the AKW R02F laboratory granulator. By optimizing the binder feeding method and adopting a gradient speed regulation process, the client has stably realized uniform granulation of ultra-fine stainless steel powder below 0.2mm, greatly improving the precision and quality of ultra-fine powder finished products. It provides high-quality raw material support for high-end manufacturing scenarios in India, including precision parts processing, high-end metallurgy and metal 3D printing.
In the refined production of powder metallurgy, 0.2mm and below stainless steel powder granulation is a high-difficulty ultra-fine powder forming process that requires extremely high equipment precision and process operation standards, serving as a core link in the production of raw materials for high-end precision manufacturing. Traditional granulation equipment and processes commonly suffer from concentrated binder spraying, uneven powder wetting, particle agglomeration and severe particle size differentiation during the processing of ultra-fine stainless steel powder. These problems easily produce oversized particles and excessive fine powder, resulting in unqualified particle size and poor consistency of finished products. Such process defects not only reduce the qualification rate of powder products, but also directly affect the precision and mechanical properties of subsequent sintered and formed workpieces, long restricting the stable mass production of high-end ultra-fine stainless steel powder granulation.
To completely solve the problem of ultra-fine powder forming, the technical team of the Indian client has customized a refined granulation process suitable for 0.2mm ultra-fine powder through dozens of debugging tests, combined with the equipment characteristics of the AKW R02F laboratory granulator. In the binder feeding process, the extensive traditional one-time feeding mode is completely abandoned, and the industry-preferred operation method of multiple small-dose and uniform feeding is adopted. This method enables the binder to uniformly penetrate every part of the stainless steel raw material powder, fundamentally eliminating large particle agglomeration caused by excessive local bonding, and avoiding loose powder and forming failure caused by insufficient binder. It fully ensures uniform powder wetting during stainless steel powder granulation, laying a solid process foundation for accurate particle size control and uniform particle forming.
Speed control is the core key to uniform forming in 0.2mm stainless steel powder granulation. The client gives full play to the core advantages of the AKW R02F laboratory granulator including high-precision frequency conversion speed regulation and adjustable dynamic parameters, and innovatively adopts a gradient speed reduction forming process to replace the backward constant-speed granulation mode of traditional equipment. Equipped with a high-precision frequency conversion control system, this professional laboratory granulator supports stepless fine speed adjustment, perfectly adapting to the refined forming requirements of ultra-fine powder. In the initial stage of granulation, the equipment operates at a reasonable high speed to quickly complete the homogeneous mixing of stainless steel powder and binder, disperse powder agglomeration and realize full integration of raw materials. In the middle and later stages of granulation, the speed is gradually reduced according to the particle forming state. Relying on the equipment’s gentle rolling forming structure, it avoids excessive particle compaction, oversize particle diameter and particle damage caused by high-speed extrusion, enabling all powder particles to form stably and regularly. Meanwhile, the equipment’s closed operation structure effectively isolates external pollution and guarantees the high purity and consistency of finished products from stainless steel powder granulation.
Through the precise adaptation of process and equipment, the AKW R02F laboratory granulator has realized stable mass production ofstainless steel powder granulation below 0.2mm at the Indian client’s site, achieving a qualitative leap in overall production efficiency. As a high-precision granulation equipment specially developed for ultra-fine powder, the R02F granulator features high spheroidization rate, strong particle size controllability and excellent forming uniformity, which accurately meets the production standards of high-end ultra-fine stainless steel powder. At present, the granulated powder mass-produced by the client has round and uniform particles, concentrated particle size distribution, no oversize particles above 0.2mm and no local agglomeration defects, with a significantly improved product qualification rate. In addition, the equipment’s built-in low-residue and self-cleaning design, combined with the refined granulation process, effectively reduces raw material loss of powder, cuts down the production cost of subsequent screening and reworking, and helps the client achieve multiple production goals of quality improvement, efficiency enhancement and cost reduction in ultra-fine stainless steel powder granulation.
The technical person in charge of the Indian client stated that the optimized 0.2mm stainless steel powder granulation process based on the AKW R02F laboratory granulator has effectively overcome the technical bottleneck of local ultra-fine powder forming, marking an important breakthrough in the refined production of regional powder metallurgy. In the future, the client’s team will continue to optimize process parameters, solidify standardized operation procedures, further improve the precision and stability of ultra-fine stainless steel granulated powder, and empower the upgrading of local high-end precision manufacturing industry. This successful mass production case has also fully verified the professional performance of CO-NELE laboratory granulation equipment in the field of overseas ultra-fine powder granulation, highlighting its high adaptability and reliability in stainless steel powder granulation and ultra-fine powder refined forming scenarios, and providing a mature process reference and equipment solution for more overseas powder manufacturing enterprises.
