Metal injection molding is a technique of making metallic parts, which utilizes the process of powder metallurgy. Though the Medical Instrument Parts uses metals in powdered form, it is unlike the usual powder metal dispensation. Metal injection molding requires metallic powders to be ten to hundred times smaller in size, compared to powder metal processes. The final product in case of metal injection molding has a higher density. The benefits and features of metal injection molding are much like that of rubber and plastic molding, but the final product you get is much stronger. This procedure is often used for producing surgical tools, components of firearms, hard disk drives for computers, electrical connectors and automotive locks.
Procedure for Metal Injection Molding
This process consists of five steps, that include the mixing, the injection molding, the de-binding, the sintering as well as the part finishing. This method is gaining popularity every day.
Step one requires the mixing of metallic powders, which are recognized to be strong and have inherent characteristics, like high impact strength, wear resistance, hardness, machine ability and temperature characteristics. The binding agent can also be added at this point. The purpose of mixing different metallic powders is to derive a metallic compound which has all of the positive characteristics of different metals, while eliminating their respective weaknesses.
Because of the mixing of powders, we get what is known as feedstock, that is injected in to the desired molds, because it is done when it comes to rubber or plastic moldings. The factor that we get due to molding is called as green part.
The de-binding stage necessitates the immersion from the green part in water baths to remove the binder which has gone inside the part matrix. During cross linking, the de-bounded green component is put through ultraviolet light, resulting to your thermo setting from the binding agents which were used one of the metallic powders.
After the binding stage has ended, the component is heated to your temperature of above 2000 º Fahrenheit in a furnace. This method is known as sintering, and it also fuses the metallic parts to offer them an excellent shape. At the end, the sintered components are delivered to the finishing stage for eliminating the imperfections and burrs. The component is currently ready for dispatch.
Listed here are the main benefits of using the whole process of metal injection molding:
High complexity of shapes
This is a great technology once we want components having a complex shape and superior final characteristics. Such characteristics include high density, strength, and outstanding magnetic permeability, resistance to corrosion plus jzsbox connectivity, and temperatures that can’t be achieved using light metallic alloys and plastics. This method is ideally used for producing microelectronic packaging, actuators and sensors for automotives, hardware, hand tools, heat dissipation devices for computers, oil well drilling tools, engine fuel parts and many more.