氟碱型烧结焊剂的电弧、冶金特性及其应用  

Characteristics of welding arc and metallurgical fluorine base type sintered flux and its application

作　　者：孙咸[1] 

机构地区：[1]太原理工大学焊接材料研究所,山西太原030024

出　　处：《电焊机》2014年第1期1-4,38,共5页Electric Welding Machine

摘　　要：分析了埋弧焊的电弧、熔滴过渡行为及冶金特性,介绍了氟碱型焊剂的使用性能及其工程应用。研究表明,埋弧焊的电弧形态应属于连续、非活动型,而熔滴过渡则是呈典型的渣壁过渡形态。在熔滴反应区,主要是渗硅氧化和锰元素的氧化烧损。在熔池的结晶部分反应生成CO气体,是焊缝中不可避免地出现气孔或凹坑的重要原因。SJ101具有良好的焊接工艺性能、较高的低温韧性和较好的抗裂性能,是新型系列专用烧结焊剂,性能更加优良,压痕、凹坑的倾向减小。SJ101及其系列产品配合相应的焊丝和合理的工艺,在不同的工程结构中获得成功应用。The welding arc,drop transfer and metallurgical characteristics of the submerged arc welding was analyzed,the usability and its engineering application of fluorine base type flux was introduced.The research shows that the arc shape of submerged arc welding should belong to the continuous and inactive type,and drop transfer is a typical flux wall guided transfer form.The silicon reduction reaction and manganese oxidation reaction in the drop reaction zone is the main,the carbon monoxide gas produced in the crystal part of molten pool is an important reasons of appear porosity or pits inevitably in the weld metal.The SJ101 has good welding usability,high low temperature toughness and better crack resistance,the performance of new series special sintered welding flux is more excellent,the tendency of indentation and pits is reduced.The SJ101 and series products combined with corresponding welding wire and reasonable process have been successfully used in different engineering structure.

关 键 词：电弧特性 冶金过程 氟碱型烧结焊剂 

分 类 号：TG401[金属学及工艺—焊接]