基于DOE的锆合金包壳管冷轧质量分析及改善  

Analysis and Improvement of Cold Rolling Quality for Zirconium Alloy Cladding

作　　者：张海芹 王旭峰 刘海明 周军 杨锋 张伟 Zhang Haiqin;Wang Xufeng;Liu Haiming;Zhou Jun;Yang Feng;Zhang Wei(Xi’an Western Energy Material Technologies Co.,Ltd.,Xi’an 710299,China)

机构地区：[1]西安西部新锆科技股份有限公司,陕西西安710299

出　　处：《钛工业进展》2023年第2期35-39,共5页Titanium Industry Progress

基　　金：陕西省技术创新引导计划项目(2022CGKC-03);陕西省秦创原“科学家+工程师”队伍建设项目(2022KXJ-145)。

摘　　要：为了提高锆合金包壳管的冷轧质量,通过统计过程控制技术和工序能力分析研究了锆合金包壳管冷轧后的壁厚偏差问题,并基于试验设计(design of experiment, DOE)技术对皮格尔冷轧工艺进行了优化。包壳管冷轧质量分析和工艺优化试验的结果表明,轧制前管材的壁厚偏差和送进量对轧制后的管材壁厚偏差有显著影响;当轧制前管材壁厚偏差<0.3 mm、壁厚变形量为65%、送进量为1.0 mm/次时,轧制后的管材壁厚偏差最小;通过轧制工艺优化后,反映壁厚偏差离散性的极差平均值由0.036减小到0.018,极差波动也明显减小,轧制质量显著提高;当轧制管材壁厚变形量一定时,对轧制前壁厚偏差较大的管材,采用小送进量轧制,可减小轧制后管材的壁厚偏差,达到提高锆合金包壳管材质量的目的。To improve the quality of cold rolling zirconium alloy cladding tube,the wall-thickness vibration of cold rolling zirconium alloy cladding tube was studied by statistic process technology and process capability analysis,and the cold pilgering process was optimized based on design of experiment(DOE).The analysis of cold rolling quality for zirconium alloy cladding tube and results of optimization experiments show that the wall-thickness vibration of mother tube and feed rate have significant effect on the wall-thickness vibration of finished tube.When the wall-thickness vibration of mother tube little than 0.3 mm,the reduction of wall-thickness equal to 65%and the feed rate equal to 1.0 mm per time,the finished tube has minimum wall-thickness vibration.By optimizing the cold rolling process,the average range value reflecting the dispersion of wall-thickness deviation is reduced from 0.036 to 0.018,and the vibration of range significantly reduced.For the mother tube with lager wall-thickness vibration,little feed rate of cold rolling is benefit to reduce wall-thickness vibration of finished tube.

关 键 词：锆合金 包壳管 皮尔格冷轧 壁厚偏差 试验设计 

分 类 号：TG335.71[金属学及工艺—金属压力加工]