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What Are the Differences Between Powder Metallurgy and Metal Injection Molding?

What Are the Differences Between Powder Metallurgy and Metal Injection Molding?

Ⅰ. What is Powder Metallurgy Technology?


1. Powder metallurgy technology started as early as 1870 in the United States. It used a metal powder as raw material and then pressed copper-lead alloy bearings to realize the self-lubricating technology of the bearings. Various parts were produced through pressing and sintering technology.


2. In layman's terms of powder metallurgy technology, the general procedure is to first decompose the main material into fine powder, then add the powder to the required mold, then form a model by pressure, and finally sinter it.


Ⅱ. What is Metal Injection Molding Technology?


1. Metal injection molding technology was born in California in 1973, referred to as MIM. It is a new type of powder metallurgy molding technology invented by combining plastic injection molding technology with the field of powder metallurgy.


2. The injection molding technology process is relatively close to the powder metallurgy technology. First, the solid powder and the organic binder are uniformly mixed, then heated and plasticized at a high temperature of 150 degrees, and injected into the mold cavity with a metal injection molding device provided by a metal injection molding manufacturer, and then solidified. Then the method of thermal decomposition is used to remove the binder in the compact, and finally, like powder metallurgy, sintering produces precision parts.


Ⅲ. What is the Difference Between Powder Metallurgy and Metal Injection Molding Technologies?


In fact, powder metallurgy technology includes injection molding, because MIM machining is one of the powder metallurgy parts molding technology, and the other is press molding.


Powder metallurgy and metal injection molding technologies are used in automotive, electronics, hardware, medical equipment, communications and other fields. Compared with traditional technologies, they have higher precision and lower production costs. Therefore, they are currently the mainstream technology for various parts processing and production.


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