Additive manufacturing deformation control method and device for large thin-wall structural part

• Main Authors: BU XIANZHENG, LI HONGWEI, SU JIANGZHOU, GAN JIANNING, LI BAOYONG, HE ZHI, WANG MENGTUAN, ZHANG TIEJUN, HAN WEIQUN, WANG ZHIMIN
• Format: Patent
• Language: Chinese; English
• Published: 22.03.2022
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; CASTING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; WORKING METALLIC POWDER

The invention discloses an additive manufacturing deformation control method and device for a large thin-wall structural member, and the method comprises the steps: carrying out the additive process simulation of the structural member, and predicting the deformation information of the structural member; a combined deformation control tool is constructed; in the process of increasing the additive manufacturing height of the structural part, N shape control devices are installed in a stacked mode one by one so that the overall shape of the structural part can be limited in the additive manufacturing process; scanning the shape of the structural part after additive manufacturing, correcting the shape of the first part which does not meet the condition, and fixing the shape of the first part through a deformation control tool; and overall stress relief heat treatment is carried out on the structural part with the deformation control tool, so that precision control over the structural part is completed. According