引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 45次   下载 48 本文二维码信息
码上扫一扫!
分享到: 微信 更多
高强钢三明治板T形接头焊剂片约束电弧焊电弧行为
陈振文1,2, 王磊1,2, 芮正雷1,2, 乔及森1,2
1.兰州理工大学, 兰州 730050;2.兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室, 兰州 730050
摘要:
文中基于高速摄像和焊接电信号采集系统,对焊剂片约束电弧焊接高强三明治板T形接头过程中的电弧行为进行了研究. 结果表明,通过焊剂片约束电弧焊接工艺可实现三明治板的加工制造,焊剂片在焊接过程中不仅有效解决了电弧攀升问题,还改变了电弧形貌与加热特性,显著增加了电弧稳定性;将电弧电压控制在23~29 V,焊接电流控制在240~320 A,坡口宽度控制在5~7 mm,在此工艺参数范围内,焊剂片熔化高度适中,电弧可获得良好的约束,电弧到坡口底部的距离与电弧到面板侧壁的距离相当,主要在坡口底部及侧壁根部稳定燃烧,可获得面板与芯板熔合良好T形接头.
关键词:  三明治板T形接头  焊剂片约束电弧焊  电弧行为  接头截面形貌
DOI:10.12073/j.hjxb.2019400318
分类号:TG442
基金项目:国家自然科学基金资助项目(51665033);甘肃省中小企业创新基金(17CX2JA026)
Arc behavior of flux bands constricting arc welding for high strength steel sandwich panels T-joints
CHEN Zhenwen1,2, WANG Lei1,2, RUI Zhenglei1,2, QIAO Jisen1,2
1.Lanzhou University of Technology, Lanzhou 730050, China;2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
Abstract:
The arc behavior of high-strength camera and welding electric signal acquisition system in the process of constrained arc welding of high-strength sandwich plate T-joints were studied. The results showed that the flux bands not only effectively solves the arc climbing problem in the welding process, but also changes the arc shape and heating characteristics, and significantly increases the arc stability; when the arc voltage is controlled at 23~29 V, and the welding current is controlled at 240~320 A, the groove width is controlled at 5~7 mm. Within the range of process parameters, the flux bands has a moderate melting height, and the arc can be well constrained. The distance from the arc to the bottom of the groove is equivalent to the distance from the arc to the side wall of the panel, mainly on the slope. The bottom of the mouth and the root of the side wall are stably burned, and a good T-joint with a fusion of the panel and the core plate can be obtained.
Key words:  sandwich plate T-joint  flux bands constricting arc welding  arc behavior  cross-section morphology of joint