Powder metallurgy is a unique metal processing technology that is formed and sintered into a product with a specific shape and properties. The complete process typically consists of: powder mixing, forming (compacting the powder into its intended shape), sintering (bonding the powder particles at high temperatures), secondary operations (such as turning, grinding to achieve precise dimensions and surface finish), and heat treatment(altering the structure of metals to improve hardness, strength, etc.), impregnation (introducing impregnated substances to improve performance), and electroplating (providing anti-scuba or decorative coatings).
Heat treatment is a critical step in these processes, but the subsequent quenching oil residue often becomes a major challenge that affects product yield. It is difficult to completely remove the oil stain by traditional cleaning methods, resulting in poor subsequent impregnation and electroplating, which ultimately affects the function and appearance of the product.
In order to solve this problem, the combination of vacuum sealing cleaning and modified alcohol cleaning strategies can significantly improve the yield of powder metallurgy products. Eco-lander Precision Tech sells German made vacuum closed cleaning machine, using the unique vacuum closed cleaning characteristics of the equipment to provide solutions to the problem of acid vomiting in powder metallurgy.
First of all, vacuum closed cleaning is cleaned in a vacuum-sealed environment, which effectively avoids oxidation and discoloration of the product during the cleaning process. Its airtight properties also reduce the volatilization of cleaning agents, making it more environmentally friendly and cost-effective. In addition, ultrasonic cleaning in a vacuum environment can penetrate deep into the microporous structure of powder metallurgy products and completely strip the adhered quenching oil.
As a cleaning agent, modified alcohol has a significant effect on removing stubborn oil stains due to its excellent solubility ability, coupled with temperature degreasing. In addition, the low surface tension of the modified alcohol allows it to penetrate better into the pores, completely removing residual oil. What’s more, the modified alcohol is easy to recycle and reuse under the built-in distillation and purification of the equipment, which further reduces the cost of production and reduces the generation of waste liquid.
Through the dual effects of vacuum sealing cleaning and modified alcohol, the oil stain after heat treatment of powder metallurgy products can be completely removed, ensuring the quality of subsequent impregnation and electroplating, and effectively increasing the product yield to more than 95%. This advanced cleaning technology not only improves product performance and reliability, but also provides the best feasible solution for the green production improvement of the powder metallurgy industry.