Empowering metal powder and precise coating with adhesive to strengthen the core process of precision manufacturing

The composite mixed system of metal powder and adhesive, with its unique advantages of combining metal properties and adhesive toughness, has become a key material in precision manufacturing, electronic packaging, new energy, ancient building restoration and other fields. Its core application scenarios cover a wide range: in the field of metal injection molding (MIM), it serves as the feeding core component to ensure the forming accuracy of complex components; In the electronics industry, it is used to prepare highly conductive and thermally conductive pastes, empower LED lighting fixtures, and protect power modules through encapsulation; In automobile manufacturing, adapting to the high-strength bonding requirements of components; In the field of ancient architectural restoration, low viscosity mixed systems are used to infiltrate cracks in bricks and stones, achieving structural reinforcement while preserving the original appearance. However, metal powder has a high density and is prone to settling, and the integrity of the coating of the powder by the adhesive directly determines the performance of the finished product. Traditional mixing methods are difficult to break through the triple bottleneck of "uneven coating, settling layering, and residual bubbles". SMIDA planetary centrifugal mixer, with its core technological advantages, provides a professional solution for the mixing of this system.
The pain points faced by mixing metal powder with glue in the industry are extremely unique: firstly, the density of metal powder is much higher than that of ordinary powder, and traditional mixing is prone to sedimentation and layering of "glue on top and powder on bottom", resulting in fluctuations in the performance of the finished product; Secondly, the adhesive is difficult to fully infiltrate the surface of the powder to form a complete coating layer, and the uncoated powder is prone to agglomeration, which affects the subsequent molding and bonding strength. For example, in MIM technology, it is easy to cause sintering cracking and foaming defects; Thirdly, the air involved in the mixing process and the bubbles released during the solidification of the glue will form pinholes in electronic encapsulation and precision components, reducing insulation and structural stability; In addition, the compatibility requirements between different systems (such as epoxy adhesive, silicone adhesive, etc.) and metal powders of different particle sizes further increase the difficulty of mixing.
The SMIDA planetary centrifugal mixer adopts a dual power structure of "revolution+rotation" to accurately solve the above-mentioned differentiated pain points. The equipment synchronously completes the revolution and high-speed rotation of the stirring blade driven by the planetary carrier, forming a strong shear flow field and centrifugal circulation force in the stirring chamber. On the one hand, it can strongly break down metal powder agglomerates, promote the glue to fully infiltrate the powder surface, and achieve the ideal effect of "full coverage of powder particles", avoiding performance defects caused by uncoated powder from the root; On the other hand, continuous cyclic stirring can counteract the settling tendency of metal powder, ensuring the long-term uniformity of the mixing system and no layering phenomenon after standing. In response to the bubble problem, the high-precision vacuum system equipped on the equipment can maintain a stable negative pressure environment throughout the stirring process, efficiently discharge free bubbles in the mixing system and decomposition gases that may be generated during the curing process, ensuring a smooth surface and dense interior of the finished product. At the same time, the device supports precise adjustment of speed and vacuum degree, which can flexibly adapt to the diverse mixing needs from fine metal powder to coarse particle powder, from low viscosity epoxy adhesive to high viscosity silicone adhesive.
Whether it is the large-scale feeding preparation of MIM technology, the precise filling slurry mixing of electronic components, or the low viscosity permeable adhesive mixing for ancient building restoration, SMIDA planetary centrifugal mixers can accurately match the scene requirements. Through automation and high-precision mixing control, the equipment not only significantly improves the mixing efficiency of metal powder and glue, but also ensures product batch consistency, helping enterprises optimize production processes, reduce waste rates, and empower precision manufacturing and high-end material applications in multiple fields.