What is the process of powder metallurgy?

What is the process of powder metallurgy?

The powder metallurgy process is a new net near molding technology. The required mold molding is carried out by melting, heating, injection and pressing metal powder. For some difficult to process, Refractory metals, high alloying and other special materials, the traditional processing methods are not competent, and powder metallurgy has become the main processing and production method, especially in high-precision gears and auto parts, Next, we will talk about the basic process flow of powder metallurgy technology, so that everyone can have a deeper understanding and understanding of powder metallurgy.

1： Basic Process Flow of Powder Metallurgy Process

Step 1: Preparation of raw materials into metal powder

The step of preparing raw materials into metal powders through oxide reduction and mechanical methods.

Step 2: Make preform powder

According to different product requirements, mix the powder evenly in a certain proportion using wet or dry or semi dry methods to produce green powder. The proportion of the powder must be well controlled.

Step 3: Forming the mold

Fill the mixed powder into the corresponding powder metallurgy molding mold, and shape it into the desired shape through pressure forming or non pressure forming.

Step 4: Sintering of powder metallurgy model products

The formed model can be sintered through multiple sintering or unit sintering to form the required physical and mechanical properties of the final part product. The powder metallurgy sintering process is an important step in the entire process and also a decisive process for product performance.

Step 5: Sintering Subsequent Details Processing

For products with high precision requirements, subsequent finishing, oil immersion, electroplating, or a small amount of machining, heat treatment and other details need to be carried out after the sintering process to improve the stability and hardness of the product.