全位置自保护药芯焊丝工艺性能分析

Analysis on All-position Operational Performance of Self-shielded Flux Cored Wire

自保护药芯焊丝多为高碱性渣系焊接材料,焊接工艺性较差。药芯组分对自保护药芯焊丝的全位置焊接性、电弧稳定性、飞溅性等工艺因素有重要影响。本文分析了Fe2O3、CaCO3、Al-Mg、BaF2及Fe粉等药芯组分对工艺性的影响。研究表明:Fe2O3、CaCO3、Al-Mg、BaF2及Fe粉的质量分数分别为9%～13%、8%～12%、10%～20%、5%～10%、40%～50%时,工艺性良好。此外,药芯组分的预处理、钢带的清洗以及填充率的控制等加工制造过程对工艺性也有重要的影响,要严格控制各个环节。

Most of self-shielded flux cored wires are high alkalinity slag welding consumables,so their operational performance is poor.The composition of flux has an important influence on operational performance such as all position operational performance,arc stability,spatter etc for self shielded flux cored wires.Effect of cored compositions of Fe2O3,CaCO3,Al-Mg,BaF2 and Fe powder on operational performance was analyzed in this paper.Research shows that such a composition of 9%~13%Fe2O3,8%~12%CaCO3,10%~20%Al-Mg,40%~50%BaF2 and 5%~10%Fe powder(mass percentage)brings the flux cored wires good operational performance.In addition,pretreatment on core component,strip cleaning and controlling on filling ratio etc fabrication processes also have an important effect on operational performance.So these fabrication processes should be strictly controlled.