锻压技术

热轧卷取夹送辊辊面冲击应力分析及冲击痕控制

英文标题：Impact stress analysis and control for impact marks on roll surface of pinch roll in hot rolling coiling

作者：姚无病1 王燕2

分类号：TF305

出版年,卷(期):页码：2025,50(2):132-138

摘要：

为延长夹送辊的使用寿命，减少辊面冲击痕的出现概率，以Stellite delstain-442焊丝制备的堆焊层为样本，进行了高温拉伸和高温冲击试验，分析了堆焊层的微观组织与力学性能，并观察了断口形貌。建立了夹送辊冲击应力仿真分析模型，基于高温拉伸数据建立了辊面材料的本构模型，探究了翘头高度、带钢速度和超前率等关键因素对辊面最大冲击应力的影响。仿真结果表明，翘头高度是影响最大冲击应力的关键因素，随着翘头高度的增加，辊面最大冲击应力急剧上升，最高可达1395.6 MPa。所以，控制带钢头部翘头高度是降低带钢头部对夹送辊辊面冲击应力的有效措施。

In order to prolong the service life of pinch roll and reduce the appearance probability of impact marks on the roll surface, the surfacing layer prepared by Stellite delstain-442 wire was taken as the sample to carry out the high temperature tensile and high temperature impact tests. The microstructure and mechanical properties of surfacing layer were analyzed, and the fracture morphology was observed. The simulation and analysis model of impact stress for pinch roll was established，and the constitutive model of roll surface material was established based on the high-temperature tensile data. The influence of key factors such as warping height, strip steel speed and lead speed ratio on the maximum impact stress of roll surface was explored. The simulation results show that the warping height is the key factor affecting the maximum impact stress, with the increasing of the warping height, the maximum impact stress on the roll surface increases sharply, reaching a maximum of 1395.6 MPa. Therefore, controlling the warping height of strip steel head is an effective measure to reduce the impact stress of strip steel head on the roll surface of pinch roll.

基金项目：

上海梅山钢铁有限公司资助项目(RH2200002225)

作者简介：姚无病（1972-），男，硕士，工程师,E-mail：snowdrio@126.com;通信作者：王燕（1997-），女，硕士研究生,E-mail：wangderz@126.com

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