What are the risks and problems of 3D metal printing (metal 3D printing)?
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- Unsolveddestoon
- 2021-07-11 20:03
As mentioned above, 3D metal printing is currently developing well. For large companies like 3D system and SLM Sloutions, what are the risks? What is the biggest obstacle restricting the further development of 3D metal printing?
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- 1Flooranonymity
- 2021-08-08 11:50
1. Internal defects are more difficult to avoid
3D metal printers generally rely on lasers or electron beams to melt metal powder layer by layer to manufacture parts. Because the metal powder of 3D printers is very small, generally between 15 microns and 100 microns, when laser or electron beams irradiate metal powder, powder Melt or even vaporize, forming a flow of gas, causing the powder near the forming path to be washed away, which may cause tiny pores and defects when the adjacent powder is formed.
2. Impact on health
When operating a 3D printer, or for post-processing workers, they need to touch metal powders. These powders are less than 100 microns and can easily enter the lungs or enter the mucous membranes, causing respiratory or nerve damage. Therefore, protective measures such as wearing protective clothing and gas masks must be taken. At the same time, metal 3D printing generally requires inert protective gas, such as argon or nitrogen, to prevent powder oxidation during processing. Leaking of these inert gases may pose a suffocation hazard.
3.The risk of fire
In a 3D metal processing workshop, there will be some metal powders such as titanium, aluminum, and magnesium suspended in the air. After reaching a certain concentration, if it encounters a fire source, it will burn and cause an explosion. The smaller the particle size of the powder, the easier it is to burn. Therefore, the storage, processing, and post-processing of metal powder must avoid ignition sources and static electricity.
4.Network security issues
3D printers require an almost ideal forming environment. Even small changes to the product will have a serious or even fatal impact on the product. Such defects are sometimes difficult to find by conventional flaw detection methods in terms of appearance. Imagine that a large number of medical devices that need to be implanted into the human body, or blades for aviation, due to deliberate attacks by hackers, modification of a certain point of data, or fluctuations in laser energy, may affect the quality of parts and even cause irreparable losses.
3D metal printers generally rely on lasers or electron beams to melt metal powder layer by layer to manufacture parts. Because the metal powder of 3D printers is very small, generally between 15 microns and 100 microns, when laser or electron beams irradiate metal powder, powder Melt or even vaporize, forming a flow of gas, causing the powder near the forming path to be washed away, which may cause tiny pores and defects when the adjacent powder is formed.
2. Impact on health
When operating a 3D printer, or for post-processing workers, they need to touch metal powders. These powders are less than 100 microns and can easily enter the lungs or enter the mucous membranes, causing respiratory or nerve damage. Therefore, protective measures such as wearing protective clothing and gas masks must be taken. At the same time, metal 3D printing generally requires inert protective gas, such as argon or nitrogen, to prevent powder oxidation during processing. Leaking of these inert gases may pose a suffocation hazard.
3.The risk of fire
In a 3D metal processing workshop, there will be some metal powders such as titanium, aluminum, and magnesium suspended in the air. After reaching a certain concentration, if it encounters a fire source, it will burn and cause an explosion. The smaller the particle size of the powder, the easier it is to burn. Therefore, the storage, processing, and post-processing of metal powder must avoid ignition sources and static electricity.
4.Network security issues
3D printers require an almost ideal forming environment. Even small changes to the product will have a serious or even fatal impact on the product. Such defects are sometimes difficult to find by conventional flaw detection methods in terms of appearance. Imagine that a large number of medical devices that need to be implanted into the human body, or blades for aviation, due to deliberate attacks by hackers, modification of a certain point of data, or fluctuations in laser energy, may affect the quality of parts and even cause irreparable losses.