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<p>As demands for surface integrity and service performance of bearing steel in high-end manufacturing sectors increase, traditional grinding faces challenges in lubrication and thermal damage control. This paper proposes a multi-stage composite processing method combining laser texturing with form grinding. A biomimetic spider-web-like laser microchannel structure is constructed on the surface of GCr15 bearing steel. Three treatment schemes: UTG (unlasered), TG (single-stage laser followed by grinding), and DTG (dual-stage laser composite grinding), are designed to investigate their effects on surface properties. Results demonstrate that the biomimetic structure enhances chip evacuation, reduces heat accumulation, and improves lubrication and heat transfer conditions. Compared to UTG, the TG process reduces surface roughness by 33.05%, while DTG further decreases it by 25.63%, exhibiting the highest hardness and minimal edge damage. This dual-stage laser composite grinding technology achieves synergistic optimization of lubrication and heat dissipation, offering a new pathway for efficient manufacturing of high-performance fatigue-resistant bearings.</p>

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Enhancing Surface Integrity in GCr15 Steel Form Grinding via Orthogonal–Symmetric Spider Web Bio-inspired Laser-Textured Structures

  • 期刊论文

  • 发表日期：

    2026年1月3日

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  • Xiaohong Zhang,
  • Xi Zheng,
  • Dongdong Wen,
  • Jiaming Liu,
  • Jie Jiang,
  • Zhaoyao Shi,
  • Ziyi Zhou,
  • Qihong Huang,
  • Biqiong Yu,
  • Ahmed Mohamed Mahmoud Ibrahim

摘要

As demands for surface integrity and service performance of bearing steel in high-end manufacturing sectors increase, traditional grinding faces challenges in lubrication and thermal damage control. This paper proposes a multi-stage composite processing method combining laser texturing with form grinding. A biomimetic spider-web-like laser microchannel structure is constructed on the surface of GCr15 bearing steel. Three treatment schemes: UTG (unlasered), TG (single-stage laser followed by grinding), and DTG (dual-stage laser composite grinding), are designed to investigate their effects on surface properties. Results demonstrate that the biomimetic structure enhances chip evacuation, reduces heat accumulation, and improves lubrication and heat transfer conditions. Compared to UTG, the TG process reduces surface roughness by 33.05%, while DTG further decreases it by 25.63%, exhibiting the highest hardness and minimal edge damage. This dual-stage laser composite grinding technology achieves synergistic optimization of lubrication and heat dissipation, offering a new pathway for efficient manufacturing of high-performance fatigue-resistant bearings.