Metal injection molding is a technique of making metallic parts, which utilizes the process of powder metallurgy. Although the Stainless Steel Castings 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, in comparison to powder metal processes. The final product in case of metal injection molding has a higher density. The features and benefits of metal injection molding are much like that of rubber and plastic molding, but the final product you get is much stronger. This method is often used for producing surgical tools, components of firearms, hard disk drives for computers, electrical connectors and automotive locks.
Procedure of Metal Injection Molding
This procedure includes five steps, including the mixing, the injection molding, the de-binding, the sintering as well as the part finishing. This process is gaining popularity every day.
Step one involves the mixing of metallic powders, which are acknowledged to be strong and possess inherent characteristics, like high impact strength, wear resistance, hardness, machine ability and temperature characteristics. The binding agent can also be added at this time. The purpose of mixing different metallic powders is always to derive a metallic compound that has each of the positive characteristics of numerous metals, while eliminating their respective weaknesses.
Because of the mixing of powders, we receive what is known feedstock, which is injected into the desired molds, because it is done in the case of rubber or plastic moldings. The component that we obtain because of molding is referred to as as green part.
The de-binding stage involves the immersion of the green part in water baths to remove the binder which includes gone inside the part matrix. During cross linking, the de-bounded green component is exposed to ultraviolet light, resulting to your thermo setting from the binding agents that have been used amongst the metallic powders.
Right after the binding stage has ended, the component is heated to your temperature of above 2000 º Fahrenheit in a furnace. This process is known as sintering, and it fuses the metallic parts to give them a good shape. In the end, the sintered components are shipped to the finishing stage for eliminating the imperfections and burrs. The component is now ready for dispatch.
Listed below are the key advantages of using the process of metal injection molding:
High complexity of shapes
This is a great technology whenever we want components using 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 accomplished using light metallic alloys and plastics. This method is ideally employed 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 much more.