Injection molding is mainly employed to create plastic parts, but it is also a highly efficient way to produce enormous quantities of challenging metal parts. Standard plastic injection molding machinery can be used to do metal injection molding (MIM), a variation of the conventional injection molding technique that has many advantages.
Injection molding has certain advantages as well as disadvantages when compared to other metalworking processes like casting and machining, thus it is not constantly apparent whether it is the right technique to use when producing metals.
For components made of alloy steel, carbon steel, stainless steel, iron, copper, nickel, or titanium, 3ERP provides a trustworthy metal injection molding solution. This article outlines when businesses should employ metal injection molding as opposed to alternative metalworking techniques, i.e., when doing so is both economically and technically advantageous. You can visit now to get more details about the metal injection molding.
Plastic injection molding is remarkably similar to metal injection molding as a means of producing metal. A mixture of finely powdered metal and a binder (such as wax or polypropylene), which is injected into a mold using typical injection molding equipment, serves as the input instead of plastic pellets. The feedstock shot typically weighs no more than 100 grams, which confines the process to components that are smaller.
What justifies the application of metal injection molding? And when does it work the best? There are situations where using metal injection molding is perfect and others where it is less successful, based on its benefits and drawbacks. In a nutshell, the circumstances that follow call for metal injection molding to be a highly valuable process:
- When a lot of pieces are needed (say, 10,000 or more), alternative approaches would be too slow.
- Whenever a component is tiny enough to nestle comfortably in the palm of your hand
- When the component requires a lot of details.
- When the part needs a lot of characteristics, which include surface marks with holes or engravings like difficult to add to each unit via machining.
- When the need for difficult-to-machine metals (like some steels).
Since the 1990s, numerous industries have adopted metal injection molding extensively, especially for the mass manufacture of micro-sized components. Below is a list of some components appropriate for metal injection molding.
The compatibility of metal injection molding with medical-grade metals like titanium and stainless steel allows for a number that has important applications in the healthcare industry. Large quantities of components, such as tools, dental crowns and implants, and innovative fasteners for orthopedics implants, can be produced using this kind of method.
Metal injection molding can be employed for many small components, including watch casings, laptop hinges, heat sinks, buttons, vibrators, and loops for lanyards, in the field of consumer goods such as personal electronics. Small metal components other switches and buttons are some more applications.
Metal injection molding can be employed to produce small but important parts in the automobile and aerospace industries. Sensors, gearbox synchronizers, and fuel injectors can all be produced using the MIM process in the automotive industry, while rivets and other fasteners are produced using the method in aerospace manufacturing.
Metal injection molding finds widespread application in the manufacture of weapons’ numerous delicate metal components, among them sight mounting, safety levers, and firing pins.
The “green” components need to go through more processing after the injected material has cooled. A highly permeable “brown” portion made entirely of metal is generated after the binder ingredient has been removed using heat or chemical treatment. In order to increase the density and tensile strength of the brown parts, they are sintered at a temperature around the melting point of the metal. After that, other post-processing processes like plating or post-machining could be conducted.