INVENTOR • Manbir Sodhi
The technology is a micro melting process to melt surface irregularities or features on a surface of a substrate. The method includes providing a laser and a control mechanism associated with the laser. The control mechanism varies the laser intensity and direction by varying and monitoring the power of the laser while simultaneously considering multiple key factors.
Allows realization of the potential of solid free-form fabrication (SFF) technology for rapid production of tools and dies and for re-manufacturing valuable components. Lowers the cost and time of expensive post-processing due to issues of surface improvement in solid free-form fabrication (SFF), widely used for prototyping in additive manufacturing. SFF techniques generate surfaces with roughness compared to rough machining operations, and generally requires post-processing to bring to specification. The surface roughness specifications can be achieved during the metal deposition operations, expensive and time consuming re-fixturing and finish machining operations can be eliminated, creating large cost and time savings.
FEATURES & BENEFITS
The surface roughness specifications can be achieved during the metal deposition operations, expensive and time consuming re-fixturing and finish machining operations can be eliminated, creating large cost and time savings.
Micro-melting is applicable to a wide variety of materials, creates little to no damage to the base metal and allows precise control. Material systems may include but are not limited to glass, polymers, ceramics, diamonds, and metals.
The invention improves surface quality by a combination of planned laser micro-melting/ablation and workpiece motion. The micro-melting process can simultaneously consider all the following factors, and use them in all desired combinations:
a) the nature of the irregularities being considered;
b) the material of the substrate;
c) the power of the laser;
d) the approach direction and angle of the laser; and
e) the melting run-off, i.e. the local melting of peaks to flow into the valleys
Selective Surface Smoothing Using Lasers
The information from different substrates is saved in a database and then prior knowledge and computer data can be used to control the
laser to remove the irregularities in the surface of the substrate.
Technology is available for licensing.