Re: 3D printing on the moon December 10, 2012 08:16AM |
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Selective Laser Melting
The additive manufacturing process, Selective Laser Melting SLM enables the fabrication of complex components, which
can, for example, have intricate internal structures. SLM uses laser radiation to process metals in powder form into
components whose mechanical properties do not differ from those made conventionally.
Results
Standard laser plants commonly have a maximum output power of 200 W, which enables the processing of working
alloys from aluminium, cobalt-chrome, titanium and a variety of steels. Due to the lower absorption of the laser radiation
and the larger heat conductivity of copper and copper alloys - in comparison to, e. g., steel - greater laser power is required
to process these substances than for the ones listed above.
At the Fraunhofer Institute for Laser Technology, a laser system with a maximum laser power of 1,000 W has been integrated into an existing SLM plant by adapting the optics, mechanics and control system. For the first time, this plant, using this additive method, is now able to produce components made of various copper alloys having a density of 99.9 %.
Applications
Through this new manufacturing method, the great heat conductivity of copper can be combined with any complex
internal structure, such as cooling channels. This enables the production of tool inserts that can be efficiently cooled. In this
way, so-called hot spots can be cooled more quickly. Thereby, the cycle time is reduced and any arising warpage minimised.
Other applications in which heat should be effectively removed can be found, for example, in the cooling of high performance semiconductor devices.
Re: 3D printing on the moon December 10, 2012 08:41PM |
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Re: 3D printing on the moon December 10, 2012 08:48PM |
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Dark Alchemist
The one thing I am always scared of with mining the moon (something I am 100% against but mining asteroids and comets I have no problems with) is that the surface of the moon will change. While you might not care I rather like the face of the moon and would hate to see it in my face each night looking like some of the mining operations on this planet. It isn't asteically pleasing at all.
Re: 3D printing on the moon December 10, 2012 09:10PM |
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Re: 3D printing on the moon December 11, 2012 03:13AM |
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Re: 3D printing on the moon December 11, 2012 08:19AM |
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The temperature on the surface of the moon generally ranges from 265F (130C) in sunlight to -170F (-110C) in darkness, because there is no air to hold in the heat like here on earth. Note that the high temperature is even above the boiling temperature of water, which is why it is impossible for water to exist anywhere on the moon that is touched by sunlight.
Re: 3D printing on the moon December 11, 2012 12:33PM |
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