Yong Chen, Xianrui Zhao, Tao Zhang, Daochun Hu, Chenfu Fang, Yapeng Cai
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引用次数: 0
Abstract
The cable-type welding wire (CWW) submerged arc surfacing (SAS) is an innovative welding process with the advantages of high efficiency, energy saving, and good welding quality. At present, this welding process has been applied to repair the large structure. This study investigate the arc heat efficiency and arc heat distribution of CWW SAS using the mathematical calculation method. The deposition rate and the surfacing layer area of CWW SAS increases with the increasing welding current. The deposition rate and the surfacing layer area of CWW SAS are larger than those in single-wire SAS. The ratio of the surfacing layer area between CWW SAS and single-wire SAS is similar to the ratio of the surfacing deposition rates between CWW SAS and single-wire SAS. The efficiency of the arc heat on melting wire in CWW SAS is larger than that in single-wire SAS. The arc heat working on base metal in CWW SAS is lower than that in single-wire SAS, leading to a smaller molten base metal area. The arc heat working on droplet transfer in CWW SAS is greater than that in single-wire SAS, leading to a larger surfacing area.
摘要 电缆型焊丝（CWW）埋弧堆焊（SAS）是一种创新的焊接工艺，具有高效、节能、焊接质量好等优点。目前，这种焊接工艺已被应用于大型结构的修复。本研究采用数学计算方法研究了 CWW SAS 的电弧热效率和电弧热分布。CWW SAS 的熔敷率和堆焊层面积随焊接电流的增大而增大。CWW SAS 的熔敷率和堆焊层面积均大于单丝 SAS。CWW SAS 与单丝 SAS 的堆焊层面积之比类似于 CWW SAS 与单丝 SAS 的堆焊沉积速率之比。在 CWW SAS 中，熔化金属丝的电弧热效率大于单丝 SAS。CWW SAS 对基底金属的电弧热量低于单丝 SAS，导致基底金属熔化面积较小。在 CWW SAS 中，熔滴传递的电弧热量大于单丝 SAS，因此堆焊面积较大。
期刊介绍：
The Physics of Metals and Metallography (Fizika metallov i metallovedenie) was founded in 1955 by the USSR Academy of Sciences. Its scientific profile involves the theory of metals and metal alloys, their electrical and magnetic properties, as well as their structure, phase transformations, and principal mechanical properties. The journal also publishes scientific reviews and papers written by experts involved in fundamental, application, and technological studies. The annual volume of publications amounts to some 250 papers submitted from 100 leading national scientific institutions.
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