航空发动机燃烧室是由向外倾斜、直壁和向内倾斜3部分组成的圆形薄壁件。面向燃烧室结构的圆形薄壁件,依据偏移无支撑熔融粉末不塌陷的临界条件和单道熔覆层高度建立了熔覆成形倾斜角度数学模型,研究了激光熔覆向内倾斜和向外倾斜圆形薄壁件的偏移量、成形高度和倾斜角度,并进行了试验验证。研究结果表明在单层等偏移量条件下,几何形状的差异导致了向内倾斜圆形薄壁件较向外倾斜圆形薄壁件偏移总量较大、成形高度较小和倾斜角度较大,最后试验熔覆出了航空发动机燃烧室模拟件。研究结果为圆形薄壁件激光熔覆成形应用提供了理论和试验依据。 Aero-engine combustion chamber is composed of outwardly inclined, straight wall and inward sloping 3-part circular thin-walled parts. The mathematical model of cladding forming tilt angle is established according to the critical conditions of non-collapse of unsupported fused powder and the height of single pass cladding, Offset of the circular thin-walled parts of the offset, forming height and tilt angle, and the experimental verification. The results show that under the condition of single layer and other offsets, the difference of geometrical shapes leads to larger total deviation of the inwardly inclined circular thin-walled parts than the outwardly inclined circular thin-walled parts, smaller forming height and inclination angle Larger, final test cladding aeroengine simulator. The results provide theoretical and experimental basis for the application of laser cladding forming of thin-walled circular parts.