Formation mechanism for planar structure consisting of circumferential spiral grooves

  • J.H. Xiang
  • J.A. Duan
  • C.L. Zhang
  • H.B. Zhou
  • F. Jian
  • C. Zhou


The use of a boiling structure to enhance heat transfer can help improve evaporation efficiency and heat transfer capacity. In this paper, a planar boiling structure consisting of integrated spiral V-shaped grooves is proposed; the forming process of this structure, i.e., a ploughing-extrusion method based on a copper plate, is also presented. The relationships among the ploughing-extrusion speed VP-E, rotational speed np, and cutting feed fp are discussed. The effect of the cutting feed on the fin height and the ratio of the fin height to the ploughing-extrusion depth is studied. The relationship among the ploughing-extrusion speed, cutting feed, and processing time and that among the processing time, cutting feed, and rotational speed is analyzed. The experiment also examines the effect of related parameters on the structure formation and their appropriate combinations, determining the conditions required to form a structure consisting of only a V-shaped groove.