3D LASER-FORMING TECHNIQUE FOR COMPONENT WITH CAVITY

• Main Authors: FU, Geyan, WANG, Cong, ZHOU, Bin, DENG, Zhiqiang, SHI, Shihong, SHI, Tuo, FANG, Qinqin
• Format: Patent
• Language: Chinese; English; French
• Published: 30.11.2017
• Subjects: CASTING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; WORKING METALLIC POWDER

A 3D laser-forming technique for a component with a cavity, comprising the following steps:1) building a geometric model of a component; dividing the model into an oriented forming area and a normal forming area, wherein any part subject to interference is designated as the oriented forming area, and the remaining part is designated as the normal forming area; 2) emitting a laser beam, combining a laser spot with a metal powder feed, and forming a layer of material; in the oriented forming area, scanning at a fixed angle between the axis of a laser head and a vertical axis; in the normal forming area, scanning at an angle where the axis of the laser head is parallel to the normal line of a formed surface; 3) moving the laser head by a distance equal to the thickness of one material layer, repeating step 2) until the processing is complete. The invention eliminates a phenomenon of interference and achieves a higher degree of surface precision. When processing a sealing portion of the component, a surface to be