Method for reducing casting deformation in repair welding process of titanium alloy casting

• Main Authors: LI DONGFANG, ZHANG YANG, BAI XUESONG, SU NANTING
• Format: Patent
• Language: Chinese; English
• Published: 29.09.2023
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The invention provides a method for reducing casting deformation in a titanium alloy casting repair welding process, and belongs to the field of titanium alloy precision casting. The problem that a welding area and the periphery thereof are prone to deformation during repair welding is solved. The method comprises the following steps: S1, cleaning: cleaning the surface of the titanium alloy casting before preheating; s2, a preheating area is determined, and the preheating area is selected and marked according to the structure of the titanium alloy casting and the welding process requirement; s3, the preheating area is heated, the preheating area is evenly heated to a certain temperature according to the characteristics of the titanium alloy casting and different shapes and sizes of the preheating area, the surface temperature of the preheating area is monitored in real time in the heating process, and the preheating area is controlled to be heated at a certain speed; s4, heat preservation: keeping the tempera