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为了使钢材获得良好的性能,必须发掘材料性能的潜力。本文阐述了通过轧后在线控制冷却速度和卷取温度最佳配合的选择,使钢材获得了良好的性能。 通过试验得到以下这些数据:卷取温度:600℃,冷却速度:9℃/s和卷取温度:630℃,冷却速度:19℃/s的条件下,就可以得到好的机械性能,σ_b=60kg/mm~2,σ_s=50kg/mm~2,α_(K-40℃)=7.5kg·m/cm~2,完全达到了X70级的水平。
In order to obtain good properties of steel, the potential of material properties must be explored. This article describes the option of optimally matching the cooling rate with the coiling temperature through the on-line control of the rolling so that the steel achieves good performance. The following data were obtained experimentally: good mechanical properties were obtained at a coiling temperature of 600C, a cooling rate of 9C / s, a coiling temperature of 630C and a cooling rate of 19C / s, and? B = 60kg / mm ~ 2, σ_s = 50kg / mm ~ 2, α_ (K-40 ℃) = 7.5kg · m / cm ~ 2.