φ50 mm桶形辊穿孔机设备改造实践  

Practice of Equipment Modification of φ50 mm Barrel-roll Piercing Mill

作　　者：王华山 张艳军 成金永 WANG Huashan;ZHANG Yanjun;CHENG Jinyong(Tianjin Pipe Corporation,Tianjin 300301,China;Hebei Jin’ao Seiki Manufacture Inc.,Baoding 071504,China)

机构地区：[1]天津钢管制造有限公司,天津300301 [2]河北金奥精工制造股份有限公司,河北保定071504

出　　处：《钢管》2023年第2期72-75,共4页Steel Pipe

摘　　要：简要介绍小型卧式桶形辊穿孔机改造成5°辗轧角的锥形辊的目的和优势,论述在主机基本不做大的改动前提下,改造过程中存在的难点。详细介绍在辊型、轧辊轴承座、轴承箱、传动轴等方面分别重新设计和验证,特别是传动轴、连接半法兰等外形尺寸变化后强度能否满足工艺要求;最大和最小辊径是否适应产品规格组距的要求等。实践证明:通过理论验算和详细设计,设备改造后试轧一次性成功。Briefed here in the essay are the purpose and advantages of the modifying a small-sized horizontal barrel-roll piercing mill into a cone type piercing mill with a 5°toe angle.Also elaborated are the difficulties as encounter with during the modification without major change of the mill proper.Details involve the separate re-design and re-verification of the roll type,the roll bearing seat,the bearing box,and the driving spindle.,and particularly,the issue whether the strength of the driving spindle and the half flange as changed with their dimensions can still meet the process requirements,and the possible suitability of the maximum and the minimum roll diameters for the product size class interval.The practice shows that thanks to relevant theoretic calculations and detailed designs,the one-time success of the trial rolling opera-tion of the said modified piercing mill is realized.

关 键 词：锥形辊穿孔机 桶形辊穿孔机 辗轧角 交变负荷 

分 类 号：TG333[金属学及工艺—金属压力加工]