There are two forming technologies in powder metallurgy, one is MM injection molding, and the other is PM pressing molding. Both molding technologies are one-time forming and suitable for small precision parts production. Mass production is more conducive to cost savings and production efficiency. However, MIM injection molding technology is more suitable for the production of high-precision and complex parts, while for non-complex and special materials, using PM pressing molding production is also more suitable than traditional processing technology. Next, we will introduce the difference between metal injection molding and PM pressing molding, and which technology is better, so that everyone can have a clearer understanding of these two powder metallurgy technologies.
PM pressing molding depends on high-pressure uniaxial pressing molding, which is more suitable for relatively simple structural parts. The use of metal injection molding is almost unrestricted, and three-dimensional design is very free.
If customers want to increase the cost of more expensive raw materials and equipment, you can achieve savings in high-density, high-complexity structural parts, which cannot be manufactured by any other traditional process. PM pressing molding may be a cost-effective solution for simple parts, but MIM injection molding can produce precision parts with geometric shapes without cutting or secondary processing, reducing the cost of the entire production process.
Both PM and MIM use the same basic powder, and these two processes can customize special parts. However, the key difference in materials lies in particle size. Metal injection molding technology uses much smaller powder, which is also more expensive than the powder used in PM pressing molding.
The density of structural parts produced by MIM injection molding and PM pressing molding is significantly different. Friction between powder and tool will make the parts uneven, while parts produced by MIM injection molding are uniform in all directions. The sintering temperature of MIM is much higher than that of PM, and the strength, toughness, and wear resistance of parts produced by MIM injection molding are significantly higher.
Which is better, MIM injection molding or PM pressing molding technology? For precision and complex structural parts, it is preferable to use metal injection molding technology. Some structural parts require one or more precision parts combinations, with extremely high complexity, traditional manufacturing processes are complicated, material waste is large and production efficiency is low. Using powder metallurgy MIM injection molding technology is a cost-effective and high-quality forming technology for complex and precision structural parts, suitable for automotive, digital electronics, home appliances, medical equipment, hardware tools and other industries. Choose JINLONGYUAN!
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