关键词: 搪瓷钢DCO1EK, 第二相粒子；抗鳞爆性能

Abstract: Low-carbon cold-rolled fishing scaling resistance enamel steel DCO1EK(/%:C≤0.06,Si≤0.03,Mn:0.15-0.25,P≤0.015,S:0.010-0.020,Alt:0.020-0.040,B:0.0010-0.0020)1.8mm sheet is developed by angang 1780 mm hot continuous rolling 1550 mm cold rolling production line. With direct hot charging hot rolling process, final rolling 890 ℃,and coiling at 720℃, the precipitation of the second phase particles of BN,MNS and Fe₃C is controlled to improve fishing scaling resistance of steel. The annealing temperature 810 ℃ is adopted to improve the stamping perform- ance of low-carbon cold-rolled enamel steel DCO1EK. The results show that of low-carbon cold-rolled enamel steel DCO1EK the yield strength is 208-239 MPa,the tensile strength is 333-348 MPa, and the elongation >36%. Its metallographic structure is ferrite and pearlite,which can meet the requirements of stamping forming. The effects of boron and second phase particles on the phosphorus explosion resistance of low carbon cold rolled enamel steel are studied by hydrogen permeation test.

Key words: Enamel Steel DC01EK, Second-Phase Particle, Fishing Scaling Resistance