What is Metal Injection Molding (MIM)?

Posted by arun on September 3rd, 2014

The process of MIM Metal Injection Molding is a very common technique used in casting work. It is used for the manufacture of small metal parts with utmost precision and accuracy. It combines two techniques - plastic injection molding and powdered metal, and has got the advantages of both.  The materials manufactured using this technique usually have a weight of 0.2 to 400 grams. Products that have a complex geometry and need high precision are generally manufactured using this technique. The pieces are separately manufactured and then consolidated to form a single piece. This helps in cutting down the manufacturing costs to a great extent and the result is a product with a stronger finish. No other manufacturing process produces parts as strong and as flexible as this process.

At Dynacast, we use a new and improved method of Metal Injection Molding. Years of experience in this field has helped us understand each and every aspect of the industrial process to be able to develop a better technique which has better output than the conventional methods. The process and tools we use can take care of even the most intricate details. We employ the advancements in technology to manufacture process to improve the quality of the product. The products we manufacture have the following advantages over that of any other manufacturers’:

• Higher tolerance rates
• Better part to part consistency
• Faster and more effective processes
• Bulk products are manufactured in high volumes

The process of (MIM) Metal Injection Molding goes through 3 main phases:

• Molding

Here, the feedstock is loaded into the tool after extrusion and pelletizing. The tool produces shapes that are too complex and have shorter cycling times.

• De-binding

Here, the binders are removed. Heat and/or chemicals are used for preparing the part for the sintering process.

• Sintering

The remaining binder is eliminated, the metal part is densified, and the part is given its final geometry in this last and final phase. This process alone takes about 15 to 20 hours.

After the three processes are complete, you get your final part ready. The processes need extreme caution. Precision and accuracy need to be maintained at all the phases.

The engineers at Dynacast work in collaboration with the clients to understand the requirements well and take action accordingly. We also offer advice to make the parts better. The design changes recommended by us are sure to give you maximum benefits. Timely delivery and the best quality are maintained at all costs. Contact us for all your Metal Injection Molding requirements and experience the joy of working with the world leaders in the manufacture of small metal components on a large scale.