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指出研究自保护药芯焊丝的重要性，并着重评述国内外自保护药芯焊丝冶金理论及研究现状，在此基础上提出了今后自保护药芯焊丝的三个研究方向。
The importance of studying self-shielded flux cored wire is pointed out. The theory and research status of self-shielded flux-cored wire metallurgy both at home and abroad are emphatically reviewed. Based on these, three research directions of self-shielded flux cored wire are proposed.