Forming method of high-reliability columnar supporting structure for metal additive manufacturing

• Main Authors: LI HULIN, YU WENTAO, PENG DONGJIAN, ZHENG WEI, ZHOU YAXIONG, YANG HUANQING, BAI JING
• Format: Patent
• Language: Chinese; English
• Published: 29.01.2021
• 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 relates to a forming method of a high-reliability columnar supporting structure for metal additive manufacturing, and belongs to the field of rapid forming. The forming method comprisesthe following steps that 1, three first-order main body rods are formed in the vertical direction; 2, three second-order main body rods are formed, and four first branch structures are formed; 3, a second branch structure is formed on the first branch structures at the topmost end in the axial direction; 4, a third branch structure is formed, and a fourth branch structure is formed, and an intersection point of the third branch structure and the fourth branch structure is defined as an intersection point; 5, thin supporting rods are formed at the tops of the three second-order main body rods and the tops of the two intersection points; and 6, n columnar supporting structures are sequentially arranged, the thin supporting rods are distributed in a 5*n mode, and the thin supporting rods areused for supporting extern