| 摘要 |
<p>A method for the manufacture of a strip of formable steel comprises the steps of (i) forming liquid steel by continuous casting into a slab having a thickness of not more than 100 mm, (ii) rolling the slab in the austenitic region into an intermediate slab having a thickness in the range 5 to 20 mm, (iii) cooling the intermediate slab to below the Ar3 temperature, (iv) holding the intermediate slab in an enclosure for temperature homogenisation, (v) rolling the intermediate slab into strip, with at least one rolling pass applying a thickness reduction of more than 50 %, at a temperature below Tt and above 200 °C, where Tt is the temperature at which 75 % of the steel is converted into ferrite, and (vi) coiling said strip at a temperature above 500 °C. Advantages of simplicity of the method and the plant required for it are obtained.</p> |
