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Introduction
Carbon structural steel and low alloy structural steel are important structural materials. They are widely used in railway, bridge, ships, boilers and other industries. The rolling production of low alloy structural steel and carbon structural steel cold-rolled thin sheets and steel strips (GB 11253-89) is an important technical measure to ensure the production and utilization of steel plates in metallurgical plants.
Body
Cold-rolling technology of low alloy structural steel and carbon structural steel thin plates and steel strips has gradually become a mature technology and has been widely used in steel plants. In view of the rapid development of Chinas economy and the growing demand for cold-rolled thin sheets and steel strips in the market, more and more steel plants are transforming and upgrading cold rolling lines for thin plates and steel strips so as to meet the needs of the market and reduce production costs.
Low alloy structural steel and carbon structural steel cold-rolled thin sheets and steel strips play an important role in the production and application of steel. GB 11253-89 is known as The general technical conditions for cold-rolled thin sheets and steel strips of carbon structural steel and low alloy structural steel. This national standard provides reference for the quality management of cold-rolled thin sheets and steel strips of carbon structural steel and low alloy structural steel. Carbon structural steel and low alloy structural steel are divided into 08F, 10F, 15F and 20F according to their carbon content. Cold-rolled thin sheets and steel strips of different materials should be designed and manufactured according to the carbon content of steel materials.
When the productivity of low alloy structural steel and carbon structural steel cold-rolling is relatively low, because the electric hot-start fees caused by the circumferential speed difference of the rolling mill ruler are very high, the productivity and quality of cold rolled thin plates and steel strips can not be improved obviously. Therefore, for the purpose of improving the productivity and quality of cold rolled thin plates and steel strips, it is necessary to reduce the difference of electric hot-start fees caused by the circumferential speed difference of the rolling mill ruler. Increase the speed of the rolling mill ruler to reduce the electric hot-start fee of the corresponding roller drop part, and realize the transformation of low alloy structural steel and carbon structural steel cold rolling.
Conclusion
In summary, in order to improve the productivity and quality of low alloy structural steel and carbon structural steel cold-rolled thin sheets and steel strips, the speed of the ruler of the rolling mill must be increased, and the electric hot-start fee caused by the circumferential speed difference of the ruler must be reduced. As a result, the quality and production cost of cold rolling of carbon structural steel and low alloy structural steel can be optimized, which is an important measure to ensure the production and utilization of steel plates in metallurgical plants.
