More and more clients are preferring product miniaturization, the demand for small durable parts in the industry is increasing. Appropriate for metal injection molding in steel, iron alloys, magnetic materials, tungsten alloys, cemented carbides, fine ceramics and other series. The components are extensively utilized for aerospace, automotive, military, medical, industrial, everyday needs and other areas. Here we go over metal injection molding and other comparative process properties, which is better.
The work process of moulding metal injections
The solid powder is combined uniformly with the organic binder and granulated and injected into the molding cavity in order to heal and plasticize (alternatively to 150°C). Then the binder is removed in the blanks by chemical or thermal breakdown, and the final product is ultimately produced by sintering and densification. The features of high accuracy, consistent organization, outstanding performance and cheap manufacturing costs are comparable to conventional technology. Its products are extensively utilized in electronic information technology, biomedical devices, office facilities, automotive, industrial, equipment, sports equipment, watch and aerospace industries. The development of this technology is thus widely expected to lead to revolution in the formation and processing of part, described as "the most popular forming part of today's technology" and "the forming technology of the 21st century."
1. Comparison to the conventional method of powder metallurgy
Metal injection molding (MIM) offers an unmatched advantage over traditional powder metallurgy processes as an almost net forming technique for the manufacture of high quality precise components. MIM can produce various components with complicated formal characteristics, such as an exterior raincoat, external wire, external conical surface, hole crossing, blind hole, pin and pin, stiffener platform, surface knurling and so on. The above-mentioned components cannot be produced by traditional techniques of powder metallurgy.
2. Comparison with casting accuracy
Precision casting may also produce three-dimensional complicated shape components for a metal or alloy with a relatively low melting point. But there is nothing we can do with the essence of precise coating in refractory metals and alloys, cemented carbides, cermets and ceramics. It is also extremely difficult or ineffective to utilize precise casting for tiny, thin and big size components.
3. Machining comparison
The traditional method, which relies on automation recently to improve its processing capacity, is making considerable progress in efficiency and precision, but the basic process is still inseparable from the way in which parts are progressively processed (turned, planed, fricted, grinded, drilled and finished, etc.).
Finally, the precision of machining of the machining technique is much higher than other ways of machining, but since the efficient use of materials is low and their completion by equipment and tools is restricted, certain components cannot be finished by machining. In contrast, the material may be successfully used by metal injection molding, and the degree of form flexibility is not restricted.
Metal injection molding method is competitive for the production of tiny and complex form precision components than mechanical processing with cheap cost and high efficiency. MIM technology addresses the limitations of conventional ways of processing and is not competitive with traditional methods of processing. The technique of metal injection molding may take advantage of components which cannot be produced using conventional processing methods.