Microstructural Transformation Law and Production Practice of Hot-Rolled H-Section Steel in V-Ti Composition System
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摘要: 为探究V-Ti成分体系对材料强度等级和质量等级的影响,通过形变热模拟试验研究了组织转变规律。结合实际生产试制,对建筑钢结构的典型柱构件——热轧H型钢进行了现场试制和性能检测。结果表明:采用V-Ti成分体系生产H400×400型号热轧H型钢,当万能段翼缘压下率为60%,冷却速度为0.5~1℃/s,轧制控温940~960℃时,产品强度等级可达Q420级,低温韧脆转变温度可达-50℃。此外,结合实际生产成本控制,说明小批量组产时,同钢级(Q355~Q420级)不同质量(B~E等级)热轧H型钢规格的同步组产具有一定的经济性,可为热轧H型钢的高效化生产及标准构件选材提供参考。Abstract: To investigate the influence of the V-Ti composition system on the material strength grade and quality grade, deformation thermal simulation tests were conducted to study the microstructural transformation law. Combined with actual production trials, in this paper, field trials and performance testing were carried out on hot-rolled H-section steel of typical column member specifications for building steel structures. The results indicated that when producing H400×400 hot-rolled H-section using a V-Ti alloy system, with a flange reduction of 60% in the universal stand, a rolling cooling rate of 0.5℃/s to 1℃/s, and rolling temperature control at 940~960℃, the product could achieve a strength grade of Q420 and a low-temperature ductile-to-brittle transition temperature as low as -50℃. Additionally, considering practical production cost control, synchronously producing small batches of hot-rolled H-section with the same steel grade (Q355 to Q420) but different quality levels (B to E grades) demonstrates economic feasibility, providing technical support for efficient production of hot-rolled H-section steel and material selection for standard components.
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Key words:
- H-section steel /
- thermal simulation /
- grade /
- efficiency
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[1] 胡赓祥, 蔡珣, 戎咏华. 材料科学基础[M]. 3版. 上海: 上海交通大学出版社, 2010. [2] 高雅, 孙建林, 贠冰, 等. Q460C钢连续冷却转变规律研究[J]. 热加工工艺, 2011, 40(10): 38-41. [3] 程鼎, 彦井成, 吴保桥, 等. 耐候热轧H型钢连续冷却转变规律研究[J]. 安徽冶金科技职业学院学报, 2017, 27 (1): 5-8. [4] 冯运莉, 唐嘉悦, 薄杨. 变形温度及冷却速度对0. 46%C中碳钢组织转变的影响[J]. 热加工工艺, 2015, 44(11): 1-4. [5] 杨庚蔚, 陆佳伟, 孙辉, 等. Ti-V微合金化热轧高强钢的相变规律及组织性能[J]. 钢铁研究学报, 2019, 31(8): 726-731. [6] 柳美玲, 汤亨强, 朱国辉, 等. Nb和Nb-Ti系微合金耐候钢的连续冷却转变与形变热模拟[J]. 金属热处理, 2019, 44(7): 138-143. [7] 谭会杰, 王海燕, 李德超, 等. X80管线钢连续冷却相变及组织研究[J]. 金属热处理, 2015, 40(7): 91-94. [8] 王安仁, 王锦楠, 李曌亮, 等. HRB500E钢中钒的析出行为研究[J]. 钢铁钒钛, 2018, 39(5): 122-129. [9] 张宏亮. 含Ti钒微合金钢贝氏体区析出行为及贝氏体钢开发[D]. 沈阳: 东北大学, 2014. [10] 牛延龙, 李远征, 刘清友, 等. X90管线钢的组织和性能特征[J]. 金属热处理, 2018, 43(10): 143-150. [11] 张志宏. 冷却速率对2507超级双相不锈钢σ相析出的影响[J]. 轧钢, 2018, 35(5): 34-38. -
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