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Metal Injection Molding Manufacturers and Companies

IQS Directory is a top industrial directory listing of leading industrial metal injection companies and suppliers. Access our comprehensive index to review and source metal injection molding companies with preview ads and detailed product descriptions. These metal injection molding companies can design, engineer and provide metal injection molding services to your specifications and application needs. A quick and easy to use request for quote form is provided for you to contact these metal injection molding companies and suppliers. Each company has detailed profile information, locations, phone number, website links, product videos and product information defined. Read customer reviews and product specific news articles. We are the right resource for your information requirement whether its for custom metal molding services, powdered metal sintering services, or complex injection molding services.

  • Tulsa, OK 918-663-7511

    Since 1967, PSP has been a leader in small, intricate custom powdered metal parts for a wide range of industries, such as Sports & Recreation, Power Tools, Industrial Equipment, Oil & Gas. We make the economic benefits of powder metallurgy – or P/M – available to a wider range of customers. Let us show you the superior design, consistency, precision & finish over casting, forging or machining.

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  • Noblesville, IN 800-783-2420

    MPP is an industry leader and the premiere supplier of custom-engineered lightweight aluminum components and powder metallurgy product solutions. Our line of products includes ferrous, stainless steel, and soft magnetic components, and our services include state-of-the-art metal injection molding (MIM) and CNC machining. Get your project done right. Get MPP.

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  • Kersey, PA 814-885-6277

    Liberty Pressed Metals is a designer and producer of Powder Metals (PM) components for use in various industries, such as automotive, lawn and garden, office equipment, power tool, home appliances, and more. Our process boost product strength, precision, and durability. We are ISO 9001: 2015 certified. Our quality management system assures top-quality sourcing of materials, as well as unmatched customer service.

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  • Bird-in-Hand, PA 717-393-1591

    Ames Reese manufactures iron-based powdered metals parts, which are used mainly in the American automotive industry. The company manufactures structural powdered metal components (both mechanical and hydraulic applications) and sintered soft-magnetic sintered parts. AMES Reese offers commercial and technical engineering back-up, and also acts as Logistic Center of the North American market for the AMES Group.

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  • Pewaukee, WI 262-446-4431

    We, Gorham, craft precision powdered metal parts through a three-step process: powder blending, die compaction, and sintering. Our expertise lies in creating intricate components with exacting tolerances. Our versatile molding equipment ensures flexibility and repeatability, with a maximum tonnage of 500 tons. Meticulous attention to surface finish and ultra-precise tolerances (+/-.0025) is our hallmark. Our materials include High Strength Steel, Stainless Steel, Bronze, Brass, and Soft Magnetics.

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  • Jackson, MI 517-782-2808

    At Baxter Machine & Tool Co., we take immense pride in crafting top-quality powdered metal parts that drive innovation across a multitude of industries. With our extensive expertise and state-of-the-art facilities, we specialize in delivering a wide array of precision-engineered components that meet the most demanding specifications.

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Metal Injection Molding Industry Information

Metal Injection Molding

Metal injection molding, also called MIM, is a low cost, high volume manufacturing process that produces custom metal parts near to net shape. It combines the way injection molded plastics are formed with powdered metal sintering to create metal or ceramic parts. These parts are stronger, denser, and more capable of complex geometric shapes than most forged or die cast metal parts.

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Applications of Metal Injection Molding

A relatively new invention in manufacturing, metal injection molding combines the flexibility of the injection molding process with the strong structural integrity of sintered powdered metal. The strength, economy, and capacity for complex shapes demonstrated in injection molded metal and ceramic parts are sought-after attributes. As such, metal injection molding is becoming more widely utilized by telecommunications, automotive, medical and dental instrumentation, industrial parts, orthodontics, firearms, hardware and lock components, computer and electrical application industries.

Materials Commonly Used in Metal Injection Molding

  • Ferrous-Based Alloys
  • Low Alloys
  • Stainless Steel
  • Copper
  • Chrome
  • Nickel Alloys
  • Semimetals
  • Intermetallic Compounds
  • Magnetic Ceramics

Manufacturing Process of Metal Injection Molding

Injection molded metal parts are formed from sintered powdered metal, as are regular powdered metal parts. The powdered metal or ceramic powder used in the injection molding process must, however, become plasticized in order to flow through the injection molding machine. Polymers called binders or wax are added to the powdered metal base, creating what manufacturers call "feedstock." The feedstock pellets are fed through a hopper into a screw conveyor where they are sheared and friction heated until the material becomes malleable, then it is extruded into a closed die at the screw conveyor's opposite end. The tools used here range from simple designs to multi-cavity molds. The molded part is allowed to cool until it has solidified, then it is ejected and the mold is filled again.

These molded but not yet sintered parts are called green parts. The polymers of these parts must be extracted through a process called debinding. Debinding can be done chemically (as through a solvent bath) or thermally, and sometimes the sintering process is even sufficient to break down green parts' polymers, dissipating them during the sintering process. Green parts are sintered between 2200 and 2550 degrees Fahrenheit and shrink in the process as the pores where polymers were close, creating densities between 95 and 98% (almost as high as that of wrought metals). This is done in a high temperature sintering oven.

Benefits of Using Metal Injection Molding

Despite the shrinking, closer and more accurate tolerances can be achieved with injection molded metals than with die-casting or forging. Metal powder parts, which must be cast or forged in multiple pieces, can often be molded and sintered as a single part, cutting down on expensive secondary assembly processes, such as drilling, etching, or assembling. Other post-processing operations like machining, heat treating, or plating take place at this time to enhance properties and reach higher tolerances. Resin impregnation is an example of a process used to enhance the lifespan of porous metal products.

The densities injection molded metals achieve not only give parts much higher strength, but also higher corrosion resistance and, for magnetic compounds, improved magnetic qualities. Although some short runs may still be more economical than die-casting or forging, injection molded metals are usually manufactured in long runs to balance high overhead mold tooling costs.



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Metal Injection Molding Informational Video