Metal Injection Molding Titanium Alloy Mesh with Magnet Buckle

Metal Injection Molding Titanium Alloy Mesh with Magnet Buckle

Features of Metal Injection Molding MIM Process

Comparison of Metal Injection Molding MIM Process with Other Processing Technologies

The particle size of raw metal powder used in Metal Injection Molding MIM is >2-15>μ>m>, while the particle size of raw metal powder used in traditional powder metallurgy is mostly >50-100>μ>m>. The finished product density of >MIM> process is high because of the use of fine powder. >MIM> process has the advantages of traditional powder metallurgy process, and the high degree of freedom in shape is unattainable by traditional powder metallurgy. Traditional powder metallurgy is limited by the strength and filling density of the mold, and the shape is mostly two-dimensional cylindrical.

The traditional precision casting desiccant process is an extremely effective technology for making complex-shaped products. In recent years, the use of ceramic cores can complete the finished products of slits and deep holes, but due to the strength of the ceramic core and the limitation of the fluidity of the casting liquid, the process still has some technical difficulties. Generally speaking, this process is more suitable for manufacturing large and medium-sized parts, while the MIM> process is more suitable for small and complex-shaped parts. Comparison Item Manufacturing Process > MIM > Process Traditional Powder Metallurgy Process Powder Particle Size > (> μ > m) 2-15 50-100 > Relative Density > (%) 95-98 80-85 > Product Weight > (g) > Less than or equal to > 400 > Grams > 10 -> Hundreds Product Shape Three-dimensional Complex Shape Two-dimensional Simple Shape Mechanical Properties Advantages and Disadvantages.

Comparison of Metal Injection Molding MIM Process and Traditional Powder Metallurgy Die Casting Process is used for materials with low melting point and good casting fluidity such as aluminum and zinc alloy. Due to material limitations, the strength, wear resistance and corrosion resistance of products of this process are limited. > MIM > process can process more raw materials.

Although the precision and complexity of its products have been improved in recent years, the precision casting process is still inferior to the dewaxing process and MIM > process. Powder forging is an important development and has been applied to the mass production of connecting rods. However, in general, the cost of heat treatment and the life of the mold in the forging process are still problematic and need to be further resolved.

Traditional machining methods have recently improved their machining capabilities through automation, and have made great progress in effect and precision, but the basic procedures are still inseparable from the way of gradually machining (>turning, planing, milling, grinding, drilling, polishing, etc.>) to complete the shape of parts. The machining accuracy of mechanical machining methods is far better than other machining methods, but because the effective utilization rate of materials is low, and the completion of its shape is limited by equipment and tools, some parts cannot be completed by machining. On the contrary, MIM can effectively utilize materials without restrictions, and is suitable for the manufacture of small, high-difficulty precision parts. Compared with mechanical machining, the metal injection molding MIM process has low cost and high efficiency, and is very competitive.

Metal injection molding MIM technology does not compete with traditional machining methods, but makes up for the technical deficiencies or defects of traditional machining methods that cannot be made. >MIM> technology can play its strengths in the field of parts made by traditional machining methods. The technical advantages of MIM technology in parts manufacturing can form highly complex structural parts.

Injection molding technology uses an injection molding machine to inject product blanks to ensure that the material fully fills the mold cavity, which also ensures the realization of highly complex parts. In the past, in traditional processing technology, individual components were first made and then combined into components. When using MIM technology, it can be considered to be integrated into a complete single part, which greatly reduces the steps and simplifies the processing procedures. Comparison between metal injection molding MIM and other metal processing methods The product size accuracy is high, no secondary processing is required or only a small amount of finishing is required.

The injection molding process can directly form thin-walled and complex structural parts. The shape of the product is close to the requirements of the final product. The part size tolerance is generally maintained at around ±0.1->±>0.3>. It is particularly important to reduce the processing cost of cemented carbide that is difficult to machine and reduce the processing loss of precious metals. The product has uniform microstructure, high density and good performance.

During the pressing process of metal injection molding, due to the friction between the mold wall and the powder and between the powder, the pressing pressure distribution is very uneven, which leads to the uneven microstructure of the pressed blank, which will cause the pressed powder metallurgy parts to shrink unevenly during the sintering process. Therefore, the sintering temperature has to be reduced to reduce this effect, resulting in large porosity, poor material density, and low density of the product, which seriously affects the mechanical properties of the product. On the contrary, the injection molding process is a fluid molding process. The presence of adhesives ensures the uniform arrangement of powders, thereby eliminating the unevenness of the microstructure of the blank, and then the density of the sintered product can reach the theoretical density of its material. Under normal circumstances, the density of the pressed product can only reach 85% of the theoretical density. The high density of the product can increase the strength, strengthen the toughness, improve the ductility, electrical conductivity and thermal conductivity, and improve the magnetic properties. High efficiency, easy to achieve large-scale and large-scale production.

The metal mold used in MIM technology has a lifespan comparable to that of engineering plastic injection molding molds. Due to the use of metal molds, it is suitable for mass production of parts. Since the blank of the product is molded by an injection machine, the production efficiency is greatly improved, the production cost is reduced, and the consistency and repeatability of the injection molded product are good, which provides a guarantee for large-scale and large-scale industrial production. The range of applicable materials is wide and the application field is broad (> iron-based, low alloy, high-speed steel, stainless steel, gram valve alloy, cemented carbide>).

The materials that can be used for injection molding are very wide. In principle, any powder material that can be cast at high temperature can be made into parts by the MIM process, including difficult-to-process materials and high-melting point materials in traditional manufacturing processes. In addition, MIM can also conduct material formula research according to user requirements, manufacture any combination of alloy materials, and mold composite materials into parts. The application field of injection molded products has spread to all areas of the national economy and has broad market prospects.

Qinhuangdao Zhongwei Precision Machinery Co., Ltd. is a high-tech enterprise specializing in metal powder injection molding (MIM) and investment casting and forging research and development, production and service. It has a complete production system of design-mold opening-batch-sintering-machining-grinding and polishing-assembly.

Our company can produce various structural parts, functional parts and appearance parts with complex three-dimensional shapes according to the needs of different customers. Products are widely used in 3C, lock industry, watch and jewelry industry, medical equipment industry, household appliances industry, automobile industry, communication product industry, etc. We are based on a team of talents graduated from the Department of Powder Materials, and provide customers in various industries with high-quality products through rigorous and standardized control processes.