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<p>Friction is a critical factor that significantly influences the forming performance and quality in the deep drawing process (DDP) of sheet metal. The paper focuses on the friction and lubrication mechanisms in DDP of cylindrical parts, proposing an innovative deep drawing process incorporating hydro-pulsating lubrication (HPL-DDP). Several theoretical and numerical models of contact and friction in HPL-DDP have been developed to elucidate the process principles. The mechanism of friction reduction by hydro-pulsating fluid pressure is analyzed through illustrative calculations. The experimental setups including forming tools, hydraulic pump station, and lubrication system devices for HPL-DDP are designed and fabricated. Three different sheet materials, BUSD, DC04, and SS304, were employed to conduct the forming tests. Furthermore, multiple sets of forming tests for cylindrical parts using HPL-DDP were performed under various process parameters and lubrication conditions. Experimental results demonstrate that HPL-DDP has significantly mitigated the friction between the sheet and tools, reduced the drawing force, and enhanced both the drawability and surface quality of the specimens.</p>

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Investigation on a novel deep drawing process with hydro-pulsating lubrication for cylindrical parts

  • 期刊论文

  • 发表日期：

    2025年8月6日

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  • Lijun Wu,
  • Changcai Zhao,
  • Mikhail Dmitrievich Starostenkov,
  • Miaoyan Cao,
  • Guojiang Dong

摘要

Friction is a critical factor that significantly influences the forming performance and quality in the deep drawing process (DDP) of sheet metal. The paper focuses on the friction and lubrication mechanisms in DDP of cylindrical parts, proposing an innovative deep drawing process incorporating hydro-pulsating lubrication (HPL-DDP). Several theoretical and numerical models of contact and friction in HPL-DDP have been developed to elucidate the process principles. The mechanism of friction reduction by hydro-pulsating fluid pressure is analyzed through illustrative calculations. The experimental setups including forming tools, hydraulic pump station, and lubrication system devices for HPL-DDP are designed and fabricated. Three different sheet materials, BUSD, DC04, and SS304, were employed to conduct the forming tests. Furthermore, multiple sets of forming tests for cylindrical parts using HPL-DDP were performed under various process parameters and lubrication conditions. Experimental results demonstrate that HPL-DDP has significantly mitigated the friction between the sheet and tools, reduced the drawing force, and enhanced both the drawability and surface quality of the specimens.