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<p>Laser additive and subtractive composite manufacturing technology combines the dual advantages of additive and subtractive manufacturing to significantly enhance the forming quality of parts, and the roughness of the bonding surface plays a crucial role in the forming quality of this process. Based on the bonding surface roughness optimization principle, the impact of different interlayer milling on the mechanical properties and surface quality of additive and subtractive forming 316&#xa0;L stainless steel is investigated, and the optimization method of additive and subtractive composite strategy is proposed with the bonding surface roughness as the object, and the optimized parameters are determined as the lowest roughness as the target, and the subtractive process parameters are the milling speed of 100&#xa0;m/min, the feed rate of each tooth is 0.02&#xa0;mm/z, the milling depth is 0.2&#xa0;mm, and the best optimised parameters were used to study the effect of milling at different intervals on the mechanical properties of 316&#xa0;L stainless steel specimens. The experimental results show that milling every five layers of additive and subtractive material specimens is optimal, and the tensile strength of the additive specimen is increased by 22.3% and the yield strength is increased by 15.1%. This study not only provides theoretical support and technical reference for the optimization of laser additive and subtractive composite manufacturing processes, but also has important practical application value, which can promote the application and development of advanced manufacturing technology in industrial production.</p>

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Optimisation of forming quality by laser additive and subtractive composite strategies based on the roughness of the bonding surface

  • 期刊论文

  • 发表日期：

    2026年1月10日

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  • Rui Zhu,
  • Jiawei Wu,
  • Chao Gao,
  • Jinwei Fan,
  • Ri Pan

摘要

Laser additive and subtractive composite manufacturing technology combines the dual advantages of additive and subtractive manufacturing to significantly enhance the forming quality of parts, and the roughness of the bonding surface plays a crucial role in the forming quality of this process. Based on the bonding surface roughness optimization principle, the impact of different interlayer milling on the mechanical properties and surface quality of additive and subtractive forming 316 L stainless steel is investigated, and the optimization method of additive and subtractive composite strategy is proposed with the bonding surface roughness as the object, and the optimized parameters are determined as the lowest roughness as the target, and the subtractive process parameters are the milling speed of 100 m/min, the feed rate of each tooth is 0.02 mm/z, the milling depth is 0.2 mm, and the best optimised parameters were used to study the effect of milling at different intervals on the mechanical properties of 316 L stainless steel specimens. The experimental results show that milling every five layers of additive and subtractive material specimens is optimal, and the tensile strength of the additive specimen is increased by 22.3% and the yield strength is increased by 15.1%. This study not only provides theoretical support and technical reference for the optimization of laser additive and subtractive composite manufacturing processes, but also has important practical application value, which can promote the application and development of advanced manufacturing technology in industrial production.