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首页> 外文期刊>Journal of Materials Engineering and Performance >Manufacturing and Performance Analysis of Q390A High-Strength Steel V-Shaped Stiffeners via Warm Drawing Process
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Manufacturing and Performance Analysis of Q390A High-Strength Steel V-Shaped Stiffeners via Warm Drawing Process

机译：Q390A高强度钢V形加强筋通过保温工艺的制造与性能分析

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摘要

Herein, warm drawing technology assisted by an electric current heating system is proposed to minimize the formation of wrinkles and cracks on the surface of Q390A high-strength steel V-shaped stiffeners during cold forming. V-shaped stiffeners with excellent properties were obtained by elevating the forming temperature and improving the material plasticity. The influence of temperature and tensile rate on the mechanical properties of the Q390A high-strength steel at 400-800 degrees C was investigated. The effects of blankholder force and friction coefficient on the formed parts were simulated and analyzed by the finite element simulation software DYNAFORM. The law of heating and cooling for the formed parts during the forming process was studied through the electric current heating experiments. The forming temperature was controlled from 530 to 720 degrees C as the current density was maintained in the range from 7.3 to 8.5 A/mm(2). Surface oxidation, cracks, sheet warping degree, sectional thickness distribution, mechanical properties, and microstructure of the V-shaped stiffeners formed at 400 to 700 degrees C were analyzed. The results show that the V-shaped stiffeners formed at 600 degrees C possess excellent overall properties.
机译：这里，提出了通过电流加热系统辅助的暖绘制技术，以最小化Q390A高强度钢V形加强件在冷成形期间的皱纹和裂缝的形成。通过升高成形温度并改善材料可塑性，获得具有优异性能的V形加强件。研究了温度和拉伸速率对400-800℃的Q390A高强度钢的力学性能的影响。通过有限元模拟软件Dynaform模拟并分析了空白钳力和摩擦系数对所形成的部件的影响。通过电流加热实验研究了在成形过程中形成的成型部件的加热和冷却规律。将形成温度控制在530至720℃，因为电流密度保持在7.3至8.5A / mm（2）的范围内。分析了在400至700摄氏度下形成的V形加强件的表面氧化，裂缝，薄片翘曲度，截面厚度分布，机械性能和微观结构。结果表明，在600摄氏度下形成的V形加强件具有优异的整体性能。

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