Overall manufacturing method for large-size thin-walled annular belt type oxygen-enhancing frame

• Main Authors: LI HULIN, WANG LIN, PENG GANG, ZHOU YAXIONG, YANG HUANQING
• Format: Patent
• Language: Chinese; English
• Published: 17.04.2020
• 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; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

Disclosed is an overall manufacturing method for a large-size thin-walled annular belt type oxygen-enhancing frame. The overall manufacturing method comprises the following steps that a special substrate for laser melting deposition is designed; up-and-down segmentation is carried out along the wall thickness sudden changing portion of the oxygen-enhancing frame; a lower-segment part is formed byselecting a large-power large-scanning-speed laser melting deposition process parameter and a corresponding scanning strategy; laser machining program codes of all slice layers of the upper and lowersegments are obtained by utilizing slice software and are introduced into equipment to carry out laser melting deposition forming of the lower-segment portion first; stress relieving annealing is carried out after outward taking; then the lower segment end surface is taken as a substrate to complete deposition of the upper-segment portion, and heat treatment and machining are carried out to obtaina part under a final state