关键词: 热水器内胆, 热轧, 搪瓷钢, 析出相

Abstract: With the process measures including composition controlling by 180 t LD with top-bottom blowing and Ti microalloying by LF, continuous casting into 230 mm slabs and heating at 1200 ~ 1250℃, rapid cooling after controlled rolling, coiling at 500 ~700 ℃ ,Shanxi Taigang Stainless Steel Co Ltd has successfully developed 2 mm hot-rolled enamel steel sheet for water heater tank (/% : ≤0.14C, ≤1.20Mn. ≤0.030P,≤0.025S ,≤0.l0Ti). The results show that the steel sheet after simulated enamelling at 850 ℃ for 10 min still has high strength (Rm 366 MPa) and good formability ；the hot-rolled grain is uniform and fine, and there is no obvious change in grain size after enamel, and there are a large number of second phase particles dispersed precipitation ； for commercial produced enamel steel after single-sided enamel ,it shows good scale explosion resistance and can meet the application requirements of making water heater tank.

Key words: Water Heater Tank, Hot-Rolled, Enamel Steel, Precipitated Phase ,