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In recent years, the term "3D printing" has evolved from being unfamiliar to becoming commonplace, gradually integrating into people's lives and work. As an emerging manufacturing technology, 3D printing is developing rapidly in the industrial field.
3D printing, also known as "additive manufacturing", is a technology that constructs objects by printing them layer by layer. The 3D printer contains different "printing materials" such as metal, ceramics, plastic, and sand, which are the actual raw materials. Once connected to a computer, the printer can be controlled by the computer to stack the "printing materials" layer by layer, ultimately turning the blueprint on the computer into a physical object.
Among these, metal 3D printing technology, being one of the more promising technologies within the realm of 3D printing, plays a role in various fields such as aerospace, biomedical, dentistry, artificial bones, and automotive manufacturing. Metal 3D printing equipment usually requires the injection of inert gas into a sealed reaction chamber to reduce oxygen content and inert flammable dust, thereby enhancing safety. It also prevents premature oxidation of the printing materials, improving the usability and aesthetics of the product.
Nitrogen is an inert gas, meaning it does not react with other substances under normal conditions. Its economic and accessible nature makes it an ideal gas for applications in 3D printing.
When a 3D printer uses a laser to sinter materials together, intense heat can cause the materials to react with oxygen in the air, leading to oxidation. This oxidation can reduce the quality of the final product, causing defects and weakening the materials. Using a nitrogen oven can significantly reduce the presence of oxygen, preventing oxidation and ensuring higher quality prints.
Prevent Oxidation, Improve Quality
The nitrogen oven enhances print quality by preventing oxidation, resulting in stronger and more durable components. This is particularly important when printing with metals, as oxidation can significantly affect the mechanical properties of the final product.
Improve Surface Finish of Parts
In the absence of oxygen, materials melt more uniformly, resulting in smoother and finer surfaces. This can reduce the need for subsequent processing, saving time and resources.
Expand the Range of Printable Materials
Some materials are highly reactive and cannot be printed in an oxygen-rich environment. By using the nitrogen oven, these materials become feasible, opening up new possibilities for 3D printed products.
Due to the importance of nitrogen and its usage, 3D printing technology has specific requirements for the nitrogen oven:
Reliability: 3D printing operations may take several days to complete.
Compact and Quiet: The nitrogen oven is typically installed at the point of use, requiring a compact volume and a quiet environment to minimize impact on factory operations and personnel health.
As 3D printing continues to evolve, using a nitrogen oven may become more widespread. As companies seek to produce more complex and high-quality components, the demand for controlled environments will increase. Additionally, as more highly reactive materials are used for 3D printing, the nitrogen oven will play a key role in making these materials usable.
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