低合金高强度钢HC500LA成形性能研究

发布时间：2018-04-28 11:45

本文选题：低合金高强度钢 + 成形极限　；参考：《锻压技术》2015年07期

【摘要】：以宝钢生产的低合金高强度钢HC500LA为研究对象,对其成形特性进行了研究,通过单向拉伸实验,获得材料的基本力学性能,通过成形极限实验,研究了其在不同应变状态下的成形特性。结果表明,HC500LA材料的伸长率在20%左右,同时其成形极限的FLD0接近20%,具有良好的成形性能。通过U弯和V弯回弹实验,分析了该材料的回弹规律。V弯试验表明,材料的回弹量与弯曲角度、凸模圆角半径有关,且存在正、负回弹,可通过调整弯曲角度或弯曲模具圆角大小来合理控制零件回弹。U弯试验表明,材料的回弹量与施加的压边力有关,可通过调整压边力来减小零件的回弹。最终将该材料进行汽车座椅滑轨的试制,滑轨零件的成形效果较好。
[Abstract]:Taking low alloy high strength steel HC500LA produced by Baosteel as the research object, the forming characteristics of the steel were studied. The basic mechanical properties of the material were obtained by uniaxial tensile test, and the forming limit test was carried out. The forming characteristics of the material under different strain conditions were studied. The results show that the elongation of HC500LA is about 20%, and the forming limit of HC500LA is close to 20%, which has good formability. Through U-bend and V-bend springback experiments, the springback law of the material is analyzed. V bending test shows that the springback of the material is related to the bending angle and the radius of the corner of the punch, and there are positive and negative springbacks. The springback of parts can be reasonably controlled by adjusting the bending angle or the circle angle of the bending die. U bending test shows that the springback of the material is related to the applied blank holder force, and the springback of the part can be reduced by adjusting the blank holder force. Finally, the material is made into the automobile seat slide rail, and the forming effect of the slide rail part is better.
【作者单位】：宝山钢铁股份有限公司研究院;汽车用钢开发与应用技术国家重点实验室(宝钢);
【分类号】：TG142.33

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