Method of additive manufacturing with separation via frangible zone

• Main Authors: POUZET SEBASTIEN YOHANN, MARION GUILLAUME VALENTIN GIAMONDO
• Format: Patent
• Language: Chinese; English
• Published: 24.09.2021
• 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; ALLOYS; CASTING; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

The invention relates to the field of additive manufacturing and more particularly to a method of additive manufacturing by supplying a metallic material, melting beads of the metallic material through the supply of energy, and solidifying the beads. In this method, the intensity, per unit length of bead, of the energy supplied for melting one or more initial beads 1a, 1b of the metallic material supplied to a first part 2 of a component is appreciably lower than that of the energy supplied for melting one or more subsequent beads 1c, 1d of the metallic material supplied to the initial beads 1a, 1b. This then yields a frangible region 11, formed by the initial beads 1a, 1b, via which region a second part 3 of the component formed by the method can easily be separated from the first part 2 so as to avoid the spread of cracks between the first and second parts 2, 3 of the component. 本发明涉及增材制造领域，并更具体涉及一种通过供应金属材料、通过能量供应熔化金属材料的熔珠并固化熔珠来进行增材制造的方法。在该方法中，用于熔化供应到部件的第一部分2的金属材料的一个或多个初始熔珠1a、1b的能量供应的每单位熔珠长度的强度显著小于用于熔化供应到初始