Iron-based High-strength Metal Injection Molded Parts

MIM is the abbreviation of Metal Injection Molded. Metal powder injection molding technology is the product of the penetration and intersection of multiple disciplines such as plastic molding technology, polymer chemistry, powder metallurgy technology and metal materials science.

Advantages of MIM MIM combines the advantages of powder metallurgy and plastic injection molding, breaks through the limitations of traditional metal powder molding technology on product shape, and uses plastic injection molding technology for mass production and efficient forming of complex-shaped parts. It has become a near-net forming technology for modern manufacturing of high-quality precision parts, with incomparable advantages over conventional powder metallurgy, machining and precision casting.

Compared with other metal forming processes such as metal sheet stamping, powder molding, forging and machining, MIM can form parts with highly complex geometric shapes.

Generally speaking, MIM can also complete the complex part structure that can be completed by plastic injection molding.

Applying this feature, MIM has the opportunity to merge multiple parts originally processed by other metal molding into one part, simplify product design, reduce the number of parts, and thus reduce the assembly cost of the product.

High material utilization rate MIM molding is a near-net molding process. The shape of its parts is close to the final product form, and the material utilization rate is high, which is particularly important for the processing loss of precious metals.

The microstructure of the parts is uniform, the density is high, and the performance is good. MIM is a fluid molding process. The presence of adhesives ensures the uniform arrangement of powders, thereby eliminating the uneven microstructure of the blank, and then the density of the sintered product can reach the theoretical density of its material.

Generally speaking, MIM can reach 95%~99% of the theoretical density. High density can increase the strength of MIM parts, enhance toughness, improve ductility and electrical and thermal conductivity, and improve magnetic properties.

The density of parts pressed by traditional powder molding can only reach 85% of the theoretical density at most. This is mainly due to the friction between the mold wall and the powder and between the powders, which makes the pressing pressure unevenly distributed, resulting in uneven microstructure of the pressed blank. This will cause the pressed powder metallurgy parts to shrink unevenly during the sintering process, so the sintering temperature has to be lowered to reduce this effect, resulting in large porosity, poor material density, and low density of the products, which seriously affects the mechanical properties of the parts.

High efficiency, easy to achieve large-scale and large-scale production MIM uses injection molding machines to form green products, which greatly improves consumption efficiency and is suitable for large-scale consumption; at the same time, the consistency and repeatability of injection molding products are good, which provides a guarantee for large-scale and large-scale industrial consumption.

Wide range of applicable materials and broad application fields Metal materials suitable for MIM are very common. In principle, any powder material that can be cast at high temperature can be made into parts by MIM process, including difficult-to-process materials and high-melting point materials in traditional manufacturing processes. Metal materials that can be processed by MIM include low alloy steel, stainless steel, tool steel, nickel-based alloy, tungsten alloy, cemented carbide, titanium alloy, magnetic materials, Kovar alloy, precision ceramics, etc.

In addition, MIM can also conduct material formula research according to user requirements, manufacture alloy materials of arbitrary combination, and form composite materials into parts.

MIM molding of non-ferrous alloy aluminum and copper is technically feasible, but it is usually processed by other more economical methods, such as die casting or machining.

Qinhuangdao Zhongwei Precision Machinery Co., Ltd. specializes in the production of powder metallurgy products such as high-precision, low-noise oil-containing bearings and high-performance mechanical structural parts. The injection molding division (MIM) specializes in the production of complex, high-strength, high-precision parts with rich experience and green environmental protection. The company's main products include copper-based, iron-based, iron-copper-based oil-containing bearings, gears, cams, stainless steel parts and other types of mechanical parts and various special-shaped structural parts. Widely used in household appliances, automobiles, motorcycles, power tools, office equipment, textile machinery, food machinery, lock industry, furniture industry, toy industry and other industries.

Qinhuangdao Zhongwei Precision Machinery Co., Ltd. was founded in 1997 and is a manufacturer and technical solution provider focusing on metal powder injection molding (MIM) and investment casting and forging products. The company is located in Qinhuangdao High-tech Zone, with automotive system 16949 certification, a strong R&D team and technical strength, providing customers with fast and effective solutions and stable product supply.

Since its establishment, the company has always adhered to the principle of customer-oriented, quality-first, independent innovation and continuous improvement. Technology-first development policy.

The company's main business is the research and development, design, production and sales of metal product structural parts. The products can be widely used in key application fields such as consumer electronics, medical devices, and automobiles. It has advantages and rich experience in product research and development, mold development, process design, product manufacturing, quality control, etc.

The company has a stable core team, an excellent technical team, and has introduced advanced equipment to form the core competitiveness of MIM products in the industry and become a strategic partner of MIM products for international customers.