High Resolution Temperature Estimation During Laser Cladding of Stainless Steel

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• 作者：Wim Devesse ; ^{Wim.Devesse@vub.ac.be" class="auth_mail" title="E-mail the corresponding author} ; Dieter De Baere ; Michaë ; l Hinderdael ; Patrick Guillaume
• 关键词：Laser cladding ; additive manufacturing ; temperature measurement ; hyperspectral imaging
• 刊名：Physics Procedia
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：83
• 期：Complete
• 页码：1253-1260
• 全文大小：1102 K

文摘

Laser cladding is a technique that is used for the coating, repair and production of metallic parts. Material is added to the surface of the part by injecting a flow of powder into a melt pool that is created with a high power laser beam. When the beam scans the surface of the substrate, strong local heating and cooling results. A good knowledge of the temperature distribution history during the laser cladding process is vital to predict and optimize the material properties of the final part. This paper presents a contactless temperature measurement system with high temporal and spatial resolution based on a hyperspectral line camera. High temperature measurements were made during laser cladding of AISI 316L stainless steel. A good correlation is shown between the temperature measurements and microscope images taken after creation of the clad.