CAJ | 학술논문

针对压缩机叶片激光再制造尖部塌陷、裂纹以及热影响范围过大的成形难题，提出脉冲输出模式激光再制造成形薄壁叶片的新方法，优化了脉冲激光成形工艺参数，并设计了防尖端塌陷外接模块及防辐照铜质垫片2种简易成形工装夹具，开展了体积损伤薄壁叶片的激光再制造成形试验。结果表明：叶片形状恢复充分，表层无裂纹，尺寸偏差在1 mm 以内，角度偏差在3°以内，热影响区宽度在0．2～0．5 mm 内，解决了叶片尖部塌陷、裂纹的成形难题，减小了热损伤程度，实现了尖部体积损伤薄壁叶片的再制造成形。
침대압축궤협편격광재제조첨부탑함、렬문이급열영향범위과대적성형난제，제출맥충수출모식격광재제조성형박벽협편적신방법，우화료맥충격광성형공예삼수，병설계료방첨단탑함외접모괴급방복조동질점편2충간역성형공장협구，개전료체적손상박벽협편적격광재제조성형시험。결과표명：협편형상회복충분，표층무렬문，척촌편차재1 mm 이내，각도편차재3°이내，열영향구관도재0．2～0．5 mm 내，해결료협편첨부탑함、렬문적성형난제，감소료열손상정도，실현료첨부체적손상박벽협편적재제조성형。
Aiming at the forming aporia of blade tip collapse,cracks and the large extent of the heat-af-fected zone for the laser remanufacture of compressor blades,the new method of pulsed laser is put for-ward for remanufacture forming,the process parameters of pulsed laser are optimized,and two fixtures of attached anti-collapse module and irradiation protected copper gasket are designed,the experiment of re-manufacture forming for thin-wall blade with volume damage is developed.The experiment results show that the shape recovery is adequate,there is no crack in the surface,the dimensional precision of the formed part can be controlled within 1 mm,the angle precision of the formed bilateral bend slope is con-trolled within 3°,the extent of the heat-affected zone is 0.2 0.5 mm,the problems of remanufacture forming are solved,the thermal damage caused by laser irradiation is reduced,the blade with volume damage in the tip is realized for remanufacture forming.