Production Practice of Thin Gauge Low-temperature Tolerant Steel Plates in Laiwu Steel
ZHANG Peng
Abstract：Through analyzing the production practice of thickness 8mm low-temperature tolerant plates at-45℃in 4 300 mm heavy plate production line in Laiwu Steel, the design of optimum process parameters was optimized and confirmed. The process parameters were designed as follows:C 0.12%~0.15%, Mn is about 1.25%, Nb, Ti is 0.015%, P and S elements and other impurities is as low as possible;the discharging temperature of slabs was 1 200~1 240℃, their temperature difference was controlled within 20℃. The thickness of intermediate slabs was 48 mm;the start rolling temperature in the finishing rolling period was about 1 050℃, with 7 passes in finishing period, and the finishing temperature was controlled at 830 ℃. The stable batch supplying of this product was realized.
Keywords：steel plateslow-temperature impact at-45℃heating temperaturefinishing temperature
Publication Date：2015-11-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：3( 17-19 )