Self-Shielded Flux Cored Arc Welding for

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Marie A. Quintana, The Lincoln Electric Company, USA
Jian Zhang, Lincoln Electric China, PRC
摘要：选择正确的焊接方法和焊材是在任何一个工程上保证最大成功的基本要素。如果不懂得
关键特性和各种不同选择所带来的益处，就不能做出最终的决定。本论文阐述了自保护药芯电
弧焊过程的关键特性在生产率和性能方面表现出来的优点。 回顾过去 46 年的设计方法历史就
能说明加工过程和焊材两者的革新在本文所提及的过程中的应用，这种应用为加工过程带来了
最大的收益。
FCAW-S 独特的连接工艺使其能不断地应用在各种工业部门的钢材装配焊接上。例如包括
建筑结构和基础构造工程，海上结构和管道。这些行业利用该工艺达到所需的焊接质量和焊接
稳固性，而在焊接过程中不需要再使用外部气体的保护。由此提供了高效率连续送丝焊接的优
点。
简单说来，FCAW-S结合了焊条电弧焊（SMAW）的柔性和气体保护药芯电弧焊（FCAW-G）
或者熔化极气体保护焊高生产率的特点。因而，在气体保护焊不易实现和高成本的情况下，
FCAW-S 还是合乎使用。近年来为满足更好的结构设计并提供更高的焊接性能，制造商和焊接
制造业需要发展创新的方法来维持生产力的优势，而FCAW-S正提供了在那些情况下的应用。
关键词：自保护药芯焊接   钢结构   生产率   性能

Abstract: Selecting  the  right welding processes and consumables  for an application  is essential  to
maximizing the success of any project.    Informed decisions cannot be made without an understanding
of the key features and benefits for the various options.  This paper  reviews  the key features of  the
self-shielded flux cored arc welding (FCAW-S)  process in terms of productivity and performance
advantages.    A review of design approaches over  the 46 year history  of the  process explains the
evolution of both the process and consumables in  the context of the applications where  the process
offers the greatest benefits.
The combination of key technologies that make FCAW-S possible  is unique and is the reason for
continuing demand for the process in several industry sectors for welded steel fabrication, Figure 1,
including building construction and infrastructure projects, offshore structures, and pipelines, to name
a few.    These industries take advantage of the ability to achieve weld quality and soundness without
the use of an externally supplied shielding gas with a welding process that offers the productivity
advantages of continuous wire.