粗轧机压下螺母磨损影响的分析  

Analysis of influence of roughing mill’s screwdown nut wearing

作　　者：王修全 杨永兴 Wang Xiuquan;Yang Yongxing(Southwest Aluminum(Group)Co.,Ltd.,Chongqing 401326,China)

机构地区：[1]西南铝业(集团)有限责任公司,重庆401326

出　　处：《铝加工》2021年第3期59-61,共3页Aluminium Fabrication

摘　　要：由于轧制工艺的需要,某铝企老式2800 mm热粗轧机长期采用静压力轧制。而这种轧制方式即带料压下会增大压下螺母的负荷,加剧了螺纹磨损,致使螺旋副无法自锁,出现辊缝回弹问题,不仅影响产品质量,还影响生产效率。对此,就更换前后的现象及数据,从螺纹强度、自锁性能、电流及静压力三个方面对压下螺母磨损带来的影响进行了分析,并通过更换两侧压下装置的丝杆和螺母成功消除了该问题,恢复了辊缝精度。并在解决问题的基础上总结了一些技术经验,为同类型设备的使用和维护提供参考和借鉴。The 2800mm hot roughing mill in a factory adopts static pressure rolling for a long time due to the demand of rolling technology.The rolling method is to press down with material,such increasing the load of the nut,and aggravating the thread wear.The screw pair cannot be self-locked,and the problem of roll seam rebound occurs,which not only affects the product quality,but also affects the production efficiency.By replacing the screw and nut of the two sides of the press-down device,this problem was eliminated successfully and the precision of the roll gap was restored.Based on the phenomenon and data before and after replacement,the effect of screw thread strength,self-locking performance,current and static pressure on the wear of press-down nuts was analyzed,and some conclusions and technical experience were summarized,which has certain reference value for the use and maintenance of the same type equipment.

关 键 词：2800 mm热粗轧机 压下装置 压下螺母 磨损 

分 类 号：TG339[金属学及工艺—金属压力加工]