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激光熔覆成形高性能薄壁金属零件时,由于熔覆层凹凸不平和挂渣导致成形件表面精度差,甚至后续成形困难,往往需要在成形过程中或成形后辅助机械铣削加工和抛光处理。但是成形件因急冷凝固,表面硬度很高,加工非常困难;形状复杂的零件机械加工更需多次装夹,加工时间长,有时要占整个制造周期的60%以上。为此提出了一种基于激光铣削的光内送粉激光熔覆复合精确快速成形新方法,采用激光铣削对激光熔覆成形件进行熔覆层的精密整形,该方法相比于传统的激光熔覆大大提高了成形件表面的成形质量,从而实现薄壁金属零件的精确成形。该方案避免了可能需要的机械精整加工,缩短了加工时间,降低了加工成本。
When laser cladding high-performance thin-walled metal parts, the precision of the surface of the formed parts is poor due to the uneven cladding and dross, and even the subsequent forming is difficult, auxiliary mechanical milling and polishing are often required during or after forming. However, due to rapid solidification forming parts, the surface hardness is very high, the processing is very difficult; complex shape parts machining more need to be more folder, the processing time is long, and sometimes to account for more than 60% of the entire manufacturing cycle. Therefore, a new method based on laser milling laser-cladding laser cladding composite precision rapid prototyping was proposed. Laser cladding was used to laser cladding the laser cladding. The laser cladding method was compared with the conventional laser cladding Cover greatly improve the quality of the forming surface of the forming, in order to achieve the precise shape of thin-walled metal parts. The program to avoid the need for mechanical finishing, shortening the processing time and reduce the processing costs.