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<p>Given its material removal rate of up to 10&#xa0;μm/min, electrolyte-plasma treatment (EPT) is capable of high-precision dimensional machining of rotary parts, yielding both high geometric accuracy and superior surface integrity. This study investigated the influence of EPT during the work-hardening drawing of AISI 304 stainless steel, which is widely employed in the fabrication of medical tools and implant. The basic drawing sequence which consists of seven passes and providing the total reduction ratio of 80% was used. The duration of the intermediate EPT between passes of drawing was from 1 to 10&#xa0;min. The results revealed that introducing EPT between drawing passes reduced the tensile residual stresses in the surface layer. The optimal intermediate EPT duration, which afforded a combination of high tensile strength and low residual stresses, was determined. It was established that the incorporation of intermediate EPT into the work-hardening drawing process enhances the fatigue strength of the material by decreasing residual stresses, dislocation density, and the population of defects and foreign inclusions. The findings were utilized in the production of medical ultrasonic waveguide components that operate under high alternating stress conditions.</p>

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Investigation of electrolyte-plasma treatment for high-precision surface shaping of rotary parts

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月28日

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  • Aleksandr Korolyov,
  • Yury Aliakseyeu,
  • Wenqi Dai,
  • Shoucheng Ji

摘要

Given its material removal rate of up to 10 μm/min, electrolyte-plasma treatment (EPT) is capable of high-precision dimensional machining of rotary parts, yielding both high geometric accuracy and superior surface integrity. This study investigated the influence of EPT during the work-hardening drawing of AISI 304 stainless steel, which is widely employed in the fabrication of medical tools and implant. The basic drawing sequence which consists of seven passes and providing the total reduction ratio of 80% was used. The duration of the intermediate EPT between passes of drawing was from 1 to 10 min. The results revealed that introducing EPT between drawing passes reduced the tensile residual stresses in the surface layer. The optimal intermediate EPT duration, which afforded a combination of high tensile strength and low residual stresses, was determined. It was established that the incorporation of intermediate EPT into the work-hardening drawing process enhances the fatigue strength of the material by decreasing residual stresses, dislocation density, and the population of defects and foreign inclusions. The findings were utilized in the production of medical ultrasonic waveguide components that operate under high alternating stress conditions.