The Reason Why Everyone Love Magnesium Thixomolding.

 This means that as our customer, you can rest assured your product will hit the market on time without delays due to “unfortunate incidents.” We’re the best at what we do, and safety will always be a high priority. In addition, our die casting experience and partnerships allows Vanpro to provide the best option for any program requiring a cast magnesium part. Magnesium Thixomolding.

Magnesium ThixomoldingMagnesium Thixomolding


In automotive applications, it turns up in steering components, seat and sunroof tracks, and interior frames, not to mention "mag" wheels. More recently, it's being used in roof, hood, and rear-deck lids, manifolds, cylinder head covers, and oil pans. It is even being tested for use in engine blocks - Magnesium Thixomolding. And for similar reasons, magnesium is showing up in motorcycle and bicycle parts, such as lightweight frames.

It has excellent electrical characteristics, excellent thermal conductivity, is reasonable in cost, and is easily recyclable. For these reasons, it's a very desirable material, and we can expect to see magnesium in a growing range of applications as technology for its use and fabrication continues to develop. Besides machining, which is typically used when small numbers of parts are needed, the primary fabrication methods for magnesium are: Extrusion: typically used for simple forms; Lost wax casting: a complex process of about a dozen steps that produces near-net parts and can be used for prototyping of complex designs; and Die casting and thixomolding: net-shape processes typically used for larger runs of complex magnesium parts.

The process uses specialized equipment for high-speed injection and uses inert gas to keep the heated magnesium from oxidizing. It can accurately produce complex geometries. It can also produce thinner walls and less porous parts than die casting, and in some cases, allows the molding of features that would require secondary operations for die cast parts.

In some ways, design rules for thixomolding are less stringent than those for plastic injection molding, but the technology does have specific requirements. Magnesium Thixomolding. Because the thixotropic mixture must fill the mold quickly, uniform wall thickness is critical. Draft requirements for ease of ejection are less stringent than for plastics, but must still be considered.

Operators handle waste carefully to prevent accumulation and exposure to ignition sources. They keep appropriate fire control equipment handy, and molding processes use inert cover gases to prevent heated magnesium from igniting. With these precautions in place, magnesium is no more dangerous than hundreds of other materials we use safely every day.

Magnesium parts can be shipped via common carrier with no special precautions, and the fact that magnesium is being used in engine blocks is an indication of just how stable it can be (Magnesium Thixomolding). Another issue in using magnesium is also related to its quick oxidization. Depending on the conditions of use and if alloys are not carefully chosen, the material may corrode.

Too much of any of these can activate corrosion. For that reason, they are kept to very low levels in high-purity magnesium alloys like AZ91D, the most widely used alloy of the metal. A variety of finishes can be applied to magnesium parts both to prevent oxidation and to enhance cosmetic appearance.

Learn more about the basics of the thixomolding process for magnesium parts from Proto Labs here. Proto Labs also has a special thixomolding Design Guide section that you can access here. Published September 2015 Rate this article .

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