【作者】 郭杰；

【导师】 桂贵生；

【作者基本信息】 合肥工业大学 ， 机械工程， 2005， 硕士

【摘要】 药芯焊丝作为第四代最新焊接材料,在生产效率、焊接质量、工艺性能等方面具有其它焊材无法比拟的优点。这一新型的焊接材料目前在世界上许多发达国家已经得到广泛的应用和发展,它是当今国际上船舶、石化、压力容器、管道、航空航天、铁路、桥梁等工业产品国际质量标准中规定使用的焊接材料。我国药芯焊丝80%依靠进口,它的发展和应用已远远落后于世界发达国家,因此,国家已把药芯焊丝列入我国焊材行业“十五”发展规划的重点项目,其生产技术也被列入国家科技部、财政部国家税务总局共同编制的《中国高新技术产品目录》中最高技术档次(06011901***)。盘圆法药芯焊丝自动生产线采用盘条轧制工艺生产药芯焊丝,生产全过程不用退火,单条线年生产能力达1500吨,制成的药芯焊丝挺度好,焊接工艺性能好,质量高,比带钢法生产的药芯焊丝成本每吨低约3000元。世界上只有美国林肯公司享有该技术。本项目的核心技术是连续冷轧工艺与线材连续冷轧张力控制技术。该项目的完成,为我国在焊丝技术与产品方面填补了一项空白,缩短了与世界先进技术的差距。同时具有明显的经济效益。本课题重点研究了药芯焊丝生产过程中的“线材连续冷轧张力控制技术”,详细分析了张力的产生原因、张力控制系统的设计、参数整定以及连续轧制中多轧辊之间的张力控制、速度链结构设计给予了详细的阐述。更多还原

【Abstract】 Outershield wire product as the fourth generation new welding materials, which have the un-compitable advantages with normal welding materials in high-efficiency and high-quality as well as the ideal property in welding process . it is widely used and studied in the most developed countries. It serves as standard process in the Industries as vessel manufacture, petrol tankers, pressure containers, pipes, aviation, space-flight, railway, bridge construction ,Domestically, up to 80% of outershield wires are imported from outside, far behind the developed countries. So, outershield wires application’s are deployed as s key project in the state’s 10th five-year planning, also, the studies and developing of this technology are top listed in the book of "high-tech product catalog of china" compile by the State ministry of science & technology. And ministry of finance06011901***) .Wire rod method is use the wire rod steel as the raw material to manufacture the outershield wire through our fully automatic production line without annealing. The capacity of the line reaches 1500 ton per year. Its outputs have the property forceful and satisfactory welding result as well as high quality compare with the strip steel process, of course, this process reduce the cost 3000 RMB. per ton than the strip steel method.. Today, only INCOLN company (U.S) enjoy the technology.The key of our project is the continuous cold rolling process and wire tension control technology, with finishing of the project, we fill a blank in the field of welding technology for our country, reduce the gap with the developed country, in the mean time, the project would bringing obvious economic effect.This paper’s target is to analysis the principle of "continuous wire cold rolling tension control technology" applied on the outershield wire production line. Paper gives out the reason of the tension generation and optimal settlement of the tension control protocol in detail, the analysis include the coefficient configuration, multi-roller’s tension control method in continuous rolling, and speed chain structure designing.更多还原