棒材高精度二辊矫直质量控制策略研究
发布时间：2019-03-10 20:22
【摘要】：高精度矫直辊辊型设计及工艺参数控制是二辊矫直机的核心技术。为了满足高精度棒材矫直要求,在辊型设计过程中依据矫直辊磨损状态、弹塑性理论、塑性变形硬化系数求解模型及中性层偏移理论,提出"凹三凸二"分段辊型的矫直辊组合形式及辊型设计方法。在此基础上,根据棒材与矫直辊的局部线接触状态,建立棒材二辊矫直倾角及辊缝估算模型,进而探讨二辊矫直工艺参数(倾角、辊缝、矫直速度和导板间距)的变化规律和控制策略,并给出具体设计实例和有限元模拟分析。从矫直力、塑性变形深度、直线度及残余应力等角度,证明该辊型设计方法和工艺控制策略的有效性,且现场试验矫后的棒材直线度小于1 mm/m,完全满足棒材高精度矫直标准。
[Abstract]:The design of high precision straightening roll profile and the control of technological parameters are the core technology of the two roll straightening machine. In order to meet the requirements of high precision bar straightening, according to the wear state of straightening roll, elastoplastic theory, plastic deformation hardening coefficient solution model and neutral layer migration theory, the roll profile design process is based on the roll shape design. The combination form of straightening roller and the design method of roll profile are put forward. On this basis, according to the local line contact state of bar and straightening roller, the two-roll straightening angle and roll gap estimation model of bar are established, and then the parameters of two-roll straightening process (inclination, roll gap, roll gap) are discussed. The variation law and control strategy of straightening velocity and guide plate spacing are given, and the concrete design example and finite element simulation analysis are given. From the angles of straightening force, plastic deformation depth, straightness and residual stress, it is proved that the roller profile design method and process control strategy are effective, and the straightness of bar after straightening is less than 1 mm/m,. Fully meet the bar high-precision straightening standard.
【作者单位】： 太原科技大学山西省冶金设备设计理论与技术重点实验室;
【基金】：NSFC-山西煤基低碳联合基金(U1510131) 山西省“青年三晋学者”人才计划 山西省重点研发计划(201603D111004、201603D121010) 江苏省“双创团队”领军人才 晋城市科技计划(201501004-10)资助项目
【分类号】：TG335
，
本文编号：2437984
[Abstract]:The design of high precision straightening roll profile and the control of technological parameters are the core technology of the two roll straightening machine. In order to meet the requirements of high precision bar straightening, according to the wear state of straightening roll, elastoplastic theory, plastic deformation hardening coefficient solution model and neutral layer migration theory, the roll profile design process is based on the roll shape design. The combination form of straightening roller and the design method of roll profile are put forward. On this basis, according to the local line contact state of bar and straightening roller, the two-roll straightening angle and roll gap estimation model of bar are established, and then the parameters of two-roll straightening process (inclination, roll gap, roll gap) are discussed. The variation law and control strategy of straightening velocity and guide plate spacing are given, and the concrete design example and finite element simulation analysis are given. From the angles of straightening force, plastic deformation depth, straightness and residual stress, it is proved that the roller profile design method and process control strategy are effective, and the straightness of bar after straightening is less than 1 mm/m,. Fully meet the bar high-precision straightening standard.
【作者单位】： 太原科技大学山西省冶金设备设计理论与技术重点实验室;
【基金】：NSFC-山西煤基低碳联合基金(U1510131) 山西省“青年三晋学者”人才计划 山西省重点研发计划(201603D111004、201603D121010) 江苏省“双创团队”领军人才 晋城市科技计划(201501004-10)资助项目
【分类号】：TG335
，
本文编号：2437984
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