What is the difference between injection and injection in metal injection molding?


  metal injection moldingIt is to put the molten plastic of the injection molding machine into the mold under the push of the plunger or screw, and the injection molding is to inject it into the mold cavity with high pressure.


Metal injection molding, also known as injection molding, is a molding method that has both injection and molding. The invention has the advantages of fast production speed, high efficiency, automatic operation, diverse colors, simple to complex shapes, and large to small sizes. Moreover, the product size is accurate, the product is easy to update, and it can be made into parts with complex shapes. Metal injection molding is suitable for mass production, complex shape products and other molding processing fields.


At a certain temperature, the completely melted plastic material is stirred with a screw, and then cooled and solidified to obtain a molded product. This method is suitable for mass production of complex shape parts and is one of the important processing methods.


Metal injection molding is a process in which the plastic melted by the injection molding machine enters the mold under the push of the plunger or screw and cools to obtain the product. A plastic processing method in which plastic is plasticized in a heated barrel of a plastic injection molding machine, and then injected into the cavity of a closed mold through a plunger or reciprocating screw to form a product. The method can process products or inserts with complex shapes and accurate sizes, and the production efficiency is high. Most thermoplastics and some thermosetting plastics (such as phenolics) can be processed in this way. The material used for injection molding should have good fluidity in order to fill the mold cavity to obtain the product.

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So what are the requirements for adhesives in metal injection molding?


Metal injection molding is a new type of powder metallurgy molding technology formed by introducing modern plastic injection molding technology into the field of powder metallurgy.


Metal injection molding technology not only has fewer processes, no cuts or cuts, and high economic benefits, but also overcomes the shortcomings of traditional powder metallurgy products such as uneven materials, low mechanical properties, and difficulties in forming thin-walled and complex structures. Metal powder injection molding manufacturers find that MIM technology is particularly suitable for mass production of small, complex parts and demanding metal parts. The particle size of the metal powder used is generally 0.5 to 20 m.


In theory, the finer the particles, the larger the specific surface area, which is easy to shape and sinter, while the traditional powder metallurgy process uses coarser powder. Several binders are used to bond the metal powder particles so that the mixture has rheological and lubricity properties when heated in the barrel of the blasting machine, that is, the carrier that drives the powder flow.


Therefore,metal injection moldingThe manufacturer summarizes several adhesive requirements for MIM technology for metal powder injection molding:


1. The use of less adhesive can make the mixture produce better rheology;


2. No chemical reaction with metal powder in the process of removing glue;


3. Easy to remove, no carbon residue in the product.


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