RU96118424A - METHOD FOR PRODUCING CARBON SHEET STEEL - Google Patents

Claims (1)

A method for the production of carbon sheet steel, including hot rolling of strips and their cooling in two stages with predetermined speeds and at specified temperatures, characterized in that when rolling a strip tube billet, metal cooling after rolling in the first stage is carried out in the temperature range T _k - t, where T _k is the temperature of the end of rolling, t = 582 / C $\genfrac{}{}{0ex}{}{\text{0.06}}{\text{uh}}$ , ^O C, C _e - standard carbon equivalent, at a speed greater V _{1 = 0,004 (T k -686) +1,8} , deg / sec for C _e = 0,15-0,27, V ₁ = 0,006 (T _k -680) +1.8, deg / s for C _e = 0.28-0.33, V ₁ = 0.0087 (T _k -665) +1.8, deg / s for C _e = 0, 34-0.39 and V ₁ = 0.0076 (T _k -694) +2.4, deg / s for C _e ≥0.4, and cooling in the second stage in the temperature range t ₁ -t ₂ , where t > t ₁ > t-10 ^o C, t ₂ = 527 / C $\genfrac{}{}{0ex}{}{\text{0,07}}{\text{uh}}$ , ^o C, carry out with a speed of not less than V ₂ = 0.0043 (T _k -665) +1.4, deg / s for C _e <0.22 and V ₂ = 0.0082 (T _k - 676C $\genfrac{}{}{0ex}{}{\text{0.87}}{\text{uh}}$ ) + 0.9, deg / s for C _e = 0.23-0.48.