| 摘要 |
<p>Laser cladding system (102) is used to accumulate the build-up of material on a substrate by heating a localized spot on substrate forming a melt pool into which material is fed to create a deposit having a physical dimension. Optical detection means coupled to an optoelectric sensor which receives light through an apertured mask are used to monitor a physical dimension of the deposit, and a feedback controller (104) adjusts the laser in accordance with the electrical signal, thereby controlling the rate of material deposition. In the preferred embodiment, the physical dimension is the height of the deposit, and the system further includes an interface (106) to a computer-aided design system including a description of an article to be fabricated, enabling the feedback controller (104) to compare the physical dimension of the deposit to the description and adjust the energy of the laser (110). The feedback controller (104) includes circuitry for adjusting the laser (110).</p> |
