1. Organic Binders.
Common organic binders include polyethylene, polypropylene, and polyurethane, which offer good fluidity, processability, and formability. In pellet production, binders are added to metal powders in a certain proportion for mixing, followed by shaping under pressure. However, due to the poor thermal stability of organic binders, the final products exhibit relatively low heat resistance.
2. Water-Soluble Binders.
Water-soluble binders can enhance the mechanical strength, density, and hardness of metal powder metallurgy. Common water-soluble polymers include polyvinyl alcohol and carboxymethyl cellulose. These water-soluble binders help improve the quality of finished products during manufacturing. However, after processing, these binders need to be re-pulverized, resulting in cumbersome procedures and higher costs.
3. Resin Binders.
Resin binders can improve the wear resistance, corrosion resistance, and heat resistance of iron powder metallurgy products. Commonly used resins include epoxy and acrylic resins. These resins offer excellent corrosion resistance and waterproofing, significantly enhancing the mechanical strength and hardness of metal products. However, during processing, these resins require heating and curing, which consumes considerable time and results in lower efficiency.
When selecting binders, it is essential to comprehensively consider material properties and actual usage conditions. Different types of pellet binders have their own advantages and disadvantages, so choices should be made based on specific circumstances. In addition to the commonly mentioned binders, there are also special binders available, such as water glass and graphite. The selection of binders plays a crucial role in improving the quality and precision of iron powder metallurgy products.
Hebei Baofei is continuously deepening its research and development in pellet binders. Currently, several new types of mineral powder binders have been developed, offering advantages such as high efficiency, environmental friendliness, and low cost. Looking ahead, with ongoing technological advancements and increasing application demands, Hebei Baofei's mineral powder binders will be applied in more fields, bringing greater economic and social benefits to related industries.