超低碳氮强化自保护药芯焊丝的研制及性能分析

Development and property analysis of ultra-low carbon self-shielded flux-cored wire with nitride solid solution strengthening

摘要: 采用00Cr13Ni4MoN堆焊合金体系,通过大量试验研制出焊接工艺性能和力学性能良好的超低碳氮固溶强化自保护药芯焊丝。试验表明,自保护药芯焊丝中的氮来自于空气中的氮气,氟化物/铝镁合金=6:2和其它元素含量合适时,自保护药芯焊丝的焊接工艺性能良好;该焊丝堆焊层组织为单一马氏体,具有良好的抗回火软化性能、韧性和耐磨性,在堆焊修复连铸辊时具有优良的力学性能。

Abstract: Ultra-low-carbon 00Cr13Ni4MoN series self-shielded flux-cored wires using nitrogen solid solution strengthening were deveopled.The wires have excellent welding usability and mechanical properties.The microstructure of the deposited metal is nearly single martensite,which possesses temper-resistant softening property,toughness and resistance to wear.