دپارتمان مهندسی مکانیک ایران

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انجمن علمی مهندسی پزشکی

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آموزش تعمیر تجهیزات پزشکی

آموزش تعمیرات تجهیزات پزشکی

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دوره های آموزشی مهندسی پزشکی

انجمن مهندسی پزشکی

آموزش تعمیر تجهیزات دندانپزشکی

آموزش بازرسی جوش

آموزش پایپینگ


             

Laser rapid manufacturing
Laser rapid manufacturing of Colmonoy-6 components
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Abstract
This paper introduces a new manufacturing technique for the fabrication of Colmonoy-6
components using laser rapid manufacturing (LRM). LRM is a upcoming rapid manufacturing
technology, being developed at various laboratories around the world. It is similar to laser
cladding at the process level with different end applications. In general, laser cladding
technique is used to deposit material on the substrate either to improve the surface properties
or to refurbish the worn out parts, while LRM is capable of near net shaping the components
by layer-by-layer deposition of the material directly from CAD model. In the present study, a
high power continuous wave (CW) CO2 laser system, integrated with a co-axial powderfeeding
system and three-axis workstation was used. The effect of processing parameters
during multi-layer deposition of Colmonoy-6 has been studied and optimized to fabricate
about a dozen bushes. Thus fabricated bushes were finally machined and ground to achieve
the desired dimensions and surface finish. These bushes were tested for non-destructive testing
(like-ultrasonic testing, Dye-penetrant testing), metallographic examinations, micro-hardness
measurement, X-ray diffraction and thermal ageing. Results compared well with those
fabricated by deposition of Colmonoy-6 on austenitic stainless steel rods using gas Tungsten
arc welding (GTAW). Thus, the new manufacturing technique not only produced quality
 

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