Laser wire filling welding method for Cf/SiC composite material

• Main Authors: WANG WANLI, HUANG JIHUA, HE MENGYANG, YE ZHENG, HOU ZHIXING, YANG JIAN
• Format: Patent
• Language: Chinese; English
• Published: 29.08.2023
• 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 discloses a laser wire filling welding method for a Cf/SiC composite material, and belongs to the technical field of ceramic and ceramic-based composite material connection. According to the method, an Nb-Ti refractory alloy wire containing a small amount of Ti is adopted as a connecting material, under the protection condition of inert gas, a laser beam rapidly melts an Nb-Ti alloy welding wire and heats a Cf/SiC base material, a high-activity Nb-Ti alloy liquid phase formed locally wets the Cf/SiC composite material, interface reaction occurs, and then connection is achieved. Due to the fact that heating is conducted in a high-flexibility laser welding mode, and the finally-formed Nb-based metal connector has the high heat-resisting temperature, high-temperature-resisting connection of the large-size Cf/SiC composite material component can be achieved through the connection method. 本发明公开一种Cf/SiC复合材料的激光填丝焊接方法，属于陶瓷及陶瓷基复合材料连接技术领域。所述方法采用含少量Ti的Nb-Ti难熔合金丝作为连接材料，在惰性气体保护条件下，激光束快速熔化Nb-Ti合金焊丝并加热Cf/SiC母材