小断面管材二辊矫直机压扁量分析  

Analysis of Flattening Amount of Two-Roller Straightener for Small Section Tubes

作　　者：刘志亮[1] 张立浦[1] 刘才溢 王英杰[2] 

机构地区：[1]燕山大学国家冷轧板带装备及工艺工程技术研究中心,河北秦皇岛066004 [2]上海宝钢技术中心,上海210900

出　　处：《钢铁》2014年第8期54-58,87,共6页Iron and Steel

基　　金：河北省科技支撑计划资助项目(12211803)

摘　　要：压扁加反弯矫直是提高小断面管材矫直精度的有效方法,针对矫直过程中压扁量不易确定的问题,利用大型非线性有限元软件建立小断面管材二辊矫直过程的三维弹塑性有限元模型,研究了不同压扁量时接触长度、矫直力、残余应力、直线度和椭圆度的变化情况。经综合分析后给出合理的压扁量取值范围为0.45~0.70 mm。现场试验结果表明,参考此压扁量取值范围来调节辊缝可以得到很好的矫直效果,减少了辊缝调节时间。Flattening and reverse bending straightening is an effective way to improve the straightening precision of small cross section tube. As the flattening amount was not easy to determine during tube straightening process, a three-dimensional finite element model of two-roller straightening process of tubes was established using finite element software. The variations of contact length, residual stress, straightening force, straightness and ovality under different flattening amount have been studied. It has been found that the reasonable value range of flattening amount is 0.4-0.7 mm. Using the value range to adjust the roll gap can get a good straightening effect in the field experimentation, and reduces the time of adjusting the roll gap.

关 键 词：管材矫直 二辊矫直机 压扁量 有限元 

分 类 号：TG333.23[金属学及工艺—金属压力加工]