Vacuum brazing part hot sizing process

• Main Authors: YUAN KAI, SHANG YANTAO, JIAN YUANYUAN, FENG DONGWEN, TAN FEI, HUANG HUILING, WANG BIN, ZHANG WENKANG
• Format: Patent
• Language: Chinese; English
• Published: 05.04.2022
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

The invention relates to the technical field of aero-engine vacuum brazing, in particular to a vacuum brazing part hot sizing process, which comprises the following steps of: checking the inner diameter size of a part subjected to vacuum brazing, processing a sizing clamp, cleaning the part and the sizing clamp, baking the part, coaxially mounting the part on the periphery of the sizing clamp while the part is hot, and carrying out hot sizing on the part. The vacuum brazing furnace is used for conducting heat circulation on the part, due to the fact that the linear expansion coefficient of the shape correcting clamp is larger than that of the part, when the vacuum brazing furnace is used for conducting heat circulation on the part, the expansion degree of the shape correcting clamp is larger than that of the part, the shape correcting clamp expands the part in the radial direction, the radial size of the part is increased, and it is guaranteed that the vacuum brazing part meets the size requirement; the probl