What are the characteristics of injection molding? MIM powder injection manufacturers explain to you

MIM powder injection manufacturers believe that metal injection molding, as a near-net-shape technology for manufacturing high-quality precision parts, has incomparable advantages over traditional processing methods. MIM can manufacture many parts with complex shape features, such as various external grooves, external threads, tapered external surfaces, cross holes, blind holes, quad and key pins, stiffeners, surface knurls, etc. This is not available with conventional powder metallurgy methods. Material consumption is reduced as parts manufactured by metal injection moulding require little re-machining. Therefore, MIM will be more economical than machining methods when the number of parts with complex shapes that need to be produced is above a certain value.

    MIM powder injection manufacturers believe that the advantages of powder injection molding: like plastic products, it can produce parts with complex shapes such as metal and ceramics in one step, with low cost, good finish and high precision. Subsequent processing is generally not required. The product has high mechanical properties such as strength, hardness, elongation, good wear resistance, fatigue resistance, uniform structure, high utilization rate of raw materials, high production automation, simple process, continuous large-scale production, no pollution . The production process is clean process production. Compared with traditional batch industrial and automated parts processing, stamping, forging, precision casting and powder metallurgy, powder injection molding technology has obvious advantages.

    MIM powder injection manufacturers believe that in the metal powder injection molding technology, the product needs to be compressed, but the traditional compression technology has certain limitations. With the continuous development of powder metallurgy technology, a series of new powder metallurgy pressing technologies have emerged, and dynamic magnetic pressing technology is one of them. So, what are the advantages of dynamic magnetic pressing technology for metal powder injection molding?

    1. MIM powder injection manufacturers believe that because no mold is used, the friction force of the mold wall during molding is reduced to zero, which can achieve higher pressing pressure, improve product quality, and reduce production costs;

    2. Because the pressure can be applied at any temperature and atmosphere, and it is applicable to all materials, the working conditions are more flexible;

    3. MIM powder injection manufacturers believe that since no lubricants and binders are used in this process, the molded products do not contain impurities, have high performance, and are also conducive to environmental protection;

    4. Dynamic magnetic pressings can be sintered under conventional sintering conditions, and their mechanical properties are higher than those of traditional pressings. Dynamic magnetic pressing is suitable for the manufacture of cylindrical symmetrical near-net shape parts, thin-walled tubes, high aspect ratio parts and parts with complex internal shapes;

    5. Dynamic magnetic pressing is being used to develop high performance bonded NdFeB magnets and sintered SmCo magnets. Due to the high density of dynamic magnetic pressing bonded NdFeB magnets, the magnetic energy product can be increased by 15%-20%.

    MIM powder injection manufacturers believe that powder metallurgy sintering methods are usually divided into the following categories:

    1. Liquid phase sintering. If there are two or more components in the green body, sintering may be performed above the melting point of one component, so a small amount of liquid phase appears in the green body during sintering.

    2. Pressure sintering. During sintering, pressure is applied to the powder to promote its densification. Sintering is sometimes synonymous with hot pressing. Hot pressing is a process that combines powder forming and sintering to directly obtain powder metallurgy products.