药芯焊丝焊接工艺性分析  

Analysis on welding usability of flux-cored wire

作　　者：王宝[1] 杨林[1] 王勇[2] 

机构地区：[1]中北大学焊接材料技术中心,太原市030051 [2]太原理工大学焊接材料研究所,030024

出　　处：《焊接》2008年第6期45-49,共5页Welding & Joining

摘　　要：药芯焊丝的焊接工艺性是焊丝质量的一个重要方面,目前尚没有科学可行的方法对药芯焊丝的焊接工艺性进行评价。仅凭经验很难对焊接工艺性做出准确判断。药芯焊丝的焊接工艺性决定于熔滴过渡形态,细熔滴过渡时焊接过程比较稳定,是理想的过渡形态。在电流一定的条件下,不同的药芯焊丝形成细熔滴过渡形态所对应的焊接电压不相同,它反映了某种焊丝形成细颗过渡的趋势大小。短路概率越小,短路时间T1的频率越少,可认定某种焊丝细熔滴过渡倾向越大,焊接工艺性越好。The welding usability of flux-cored wire is an important respect of wire quality.At present,there is no scientific only depending method to evaluate the usability of flux-cored wire.It is difficult to exactly evaluate the welding usability for being dependent on personal experience.The usability of flux-cored wire is decided by metal transfer modes.For small droplet transfer,welding process is more stable and it is an ideal transfer mode.On condition that welding current is constant,arc voltage is different for small droplet transfer of different flux-cored.It reflects a trend of forming small drop transfer to some welding wire.The less short-circuiting probability in voltage probability density distribution,the less short-circuiting time T1 frequency therefore the trend of small drop transfer is greater,the welding usability is better.

关 键 词：药芯焊丝 焊接电弧物理 熔滴过渡 焊接工艺性 

分 类 号：TG422.1[金属学及工艺—焊接]