Adhesives for injection molding powder metallurgy

Adhesives for injection molding powder metallurgy

What is the situation of the binder for injection molding powder metallurgy? Many people may not understand this. Today, Zhongwei Precision Powder Metallurgy Factory will talk to you, as follows:

1. Less dosage and less adhesive can make the mixture better;

2. No reaction with metal powder or chemical reaction during adhesive removal;

3. It is easy to remove and there is no carbon residue in the product. The mixture uniformly mixes the metal powder and the organic binder, so that various raw materials become mixtures for injection molding. The homogeneity of the mixture directly affects its fluidity, thus affecting the injection molding process parameters as well as the density and other properties of the final material.

powder metallurgy

The process principle of injection molding is the same as that of plastic injection molding, and the equipment conditions are basically the same. In the injection molding process, the mixture is heated into plastic with rheological properties in the barrel of the injection machine, and then it is injected into the mold under appropriate injection pressure to form a blank. The micro shape of the sprayed blank shall be uniform and uniform to make the product shrink evenly during the sintering process.

Before sintering, the mold drawing blank must be removed. The organic binder contained in the blank is called air extraction. The extraction process must ensure that the adhesive is gradually discharged from different parts of the blank along the small channels between the particles without reducing the strength of the blank. The removal rate of adhesive usually follows the diffusion equation.

Sintering and sintering can make porous degreased blanks shrink and compact, and become products with certain structure and properties. Although the properties of products are related to many process factors before sintering, in many cases, the sintering process has a great influence on the metallographic structure and properties of the final products, even a decisive influence.

After reading the above contents, you know what the situation of the binder for injection molding powder metallurgy is like! If there is a demand for powder metallurgy processing, please call zhongwei Precision.