Nov 12,2021
Key technical points of metal powder metallurgy products
Metal powder metallurgy is a process technology that produces metal or uses metal powder (or a mixture of metal powder and non-metal powder) as raw material, undergoes forming and sintering, and manufactures metal materials, composites, and various types of products.
Metal powder metallurgy products have been hailed as one of the most popular metal component forming technologies internationally. Their main processing techniques include powder compression molding, powder injection molding, and 3D printing molding. Metal powder metallurgy products mainly use powder as the raw material, and the characteristics of powder determine the product design, formula, mold, forming process, degreasing, sintering process, and secondary processing in the process, ultimately determining the quality of the product.
The metal powder injection molding process is used to produce metal powder metallurgy products. It is a new near net forming technology developed by combining traditional powder metallurgy technology with plastic injection molding process. It uses metal or ceramic powder with appropriate adhesive, achieves the purpose of forming through injection molding, and finally obtains powder metallurgy products through degreasing and sintering. The main technical key lies in the fine powder suitable for solid-state sintering operation, which needs to have good shape retention and achieve good sintering density. The higher the vibration density of the powder, the higher the density of the sintered part. The complex binder additives, fully mixed feeding, high-precision molds, fast replication injection molding machines, high-speed, safe and effective catalytic degreasing, solid-state sintering, and metal phase diagrams are used, The scientific knowledge of materials science is used to ensure the density and shape retention of the raw material to the sintered body, thereby achieving high-quality products.
