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首页> 外文会议>Materials structure amp; micromechanics of fracture VIII >Laboratory Controlled Rolling of Microalloyed Steel for Production of Seamless Tubes
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Laboratory Controlled Rolling of Microalloyed Steel for Production of Seamless Tubes

机译：用于无缝管生产的微合金钢的实验室控制轧制

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摘要

Using the laboratory rolling mill with smooth rolls, piercing, as well as rolling in a pilger mill of the seamless tubes with diameter 273 mm from the HSLA steel microalloyed with vanadium steel was simulated. Influence of the wall thickness (6.3 - 40 mm) and finish rolling temperature on the final structural and mechanical properties was investigated. Necessary temperatures of the phase transformations in the course of cooling were determined by dilatometric tests. Based on the dilatometry results, finish rolling temperatures were reduced. Lower rolling temperatures yielded in a relative grain refinement. Effect of the finish rolling temperature did not have any marked impact on the tensile tests results. Strength properties decreased only slightly with the increasing wall thickness and the plastic properties were not influenced significantly by this parameter. The positive effect of the reduced finishing temperature appeared markedly in the results of impact tests performed at room temperature only. Notch toughness was increased by approx. 25 % in the case of the wall thickness of not less than 20 mm.
机译：使用具有平滑辊的实验室轧机，对由含钒钢微合金化的HSLA钢制成的直径273 mm的无缝管进行穿孔和皮尔杰轧机轧制。研究了壁厚（6.3-40 mm）和终轧温度对最终结构和机械性能的影响。通过膨胀试验确定冷却过程中相变的必要温度。基于膨胀法的结果，降低了终轧温度。较低的轧制温度产生了相对细化的晶粒。终轧温度的影响对拉伸试验结果没有显着影响。强度特性仅随壁厚的增加而略有下降，而塑性特性不受此参数的影响。仅在室温下进行的冲击试验的结果表明，降低的精加工温度的积极效果显着。缺口韧性提高了约。在壁厚不小于20mm的情况下为25％。

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  • 来源
  • 会议地点 Brno(CZ)
  • 作者

    Petr Kawulok; Radek Jurca; Ivo Schindler; Stanislav Rusz; Rostislav Turon; Petr Opela; Rostislav Kawulok;

  • 作者单位

    VSB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, 17. listopadu 15, 708 33 Ostrava - Poruba, Czech Republic;

    Tfrnecke zelezarny, a.s., Prumyslova 1000, 739 70 Tfinec - Stare Mesto, Czech Republic;

    VSB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, 17. listopadu 15, 708 33 Ostrava - Poruba, Czech Republic;

    VSB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, 17. listopadu 15, 708 33 Ostrava - Poruba, Czech Republic;

    Tfrnecke zelezarny, a.s., Prumyslova 1000, 739 70 Tfinec - Stare Mesto, Czech Republic;

    VSB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, 17. listopadu 15, 708 33 Ostrava - Poruba, Czech Republic;

    VSB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, 17. listopadu 15, 708 33 Ostrava - Poruba, Czech Republic;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    seamless tubes; microalloyed steel; controlled rolling; dilatometry; microstructure; mechanical properties;

    机译：无缝管；微合金钢控制轧制；膨胀计微观结构机械性能;

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