電弧的引燃(ran)可(ke)以(yi)用如(ru)下兩種(zhong)方(fang)法：

      一種(zhong)方法是(shi)將兩電(dian)(dian)(dian)極(ji)互相靠近到只有1－2mm的間距(ju)，這時如果在(zai)兩電(dian)(dian)(dian)極(ji)間加有很高的電(dian)(dian)(dian)壓(ya)（約(yue)1000V以上(shang)），那么在(zai)強電(dian)(dian)(dian)場作用下，陰極(ji)上(shang)的電(dian)(dian)(dian)子即可以克服陰極(ji)內(nei)部正(zheng)電(dian)(dian)(dian)荷對(dui)它的靜(jing)電(dian)(dian)(dian)引(yin)力而(er)逸出陰極(ji)表面，產生電(dian)(dian)(dian)場導致電(dian)(dian)(dian)子發射，造成空氣中(zhong)放電(dian)(dian)(dian)而(er)形成電(dian)(dian)(dian)弧，但是(shi)這種(zhong)方法因為電(dian)(dian)(dian)壓(ya)極(ji)高，危險性很大。

焊接(jie)吸塵(chen)空間臂應用于電弧焊、CO2保護焊、MAG保護焊、特種焊、摩擦焊、手工(gong)焊各類焊接(jie)類型。

      第二種方(fang)法是(shi)先將兩電(dian)(dian)(dian)極互相(xiang)接觸，然(ran)后迅速拉(la)開至3－4mm的(de)距離來引(yin)燃(ran)(ran)電(dian)(dian)(dian)弧(hu)，實際上(shang)焊(han)(han)(han)(han)接電(dian)(dian)(dian)弧(hu)就(jiu)是(shi)利用為(wei)種方(fang)法來引(yin)燃(ran)(ran)的(de)。例如(ru)(ru)：首先將通上(shang)焊(han)(han)(han)(han)接電(dian)(dian)(dian)源的(de)焊(han)(han)(han)(han)條未端與(yu)焊(han)(han)(han)(han)件(jian)表面相(xiang)接觸，然(ran)后很快地將焊(han)(han)(han)(han)條拉(la)開至與(yu)焊(han)(han)(han)(han)件(jian)表面距離3－4mm的(de)間(jian)隙(xi)，則(ze)電(dian)(dian)(dian)弧(hu)就(jiu)在焊(han)(han)(han)(han)條與(yu)焊(han)(han)(han)(han)件(jian)的(de)間(jian)隙(xi)中(zhong)(zhong)燃(ran)(ran)燒了。焊(han)(han)(han)(han)接電(dian)(dian)(dian)弧(hu)引(yin)燃(ran)(ran)的(de)順利與(yu)否，還與(yu)如(ru)(ru)下幾個(ge)因(yin)素有(you)關：焊(han)(han)(han)(han)接電(dian)(dian)(dian)流(liu)強度、電(dian)(dian)(dian)弧(hu)中(zhong)(zhong)的(de)電(dian)(dian)(dian)離物質、電(dian)(dian)(dian)源的(de)空(kong)載(zai)電(dian)(dian)(dian)壓及其特性等。如(ru)(ru)果焊(han)(han)(han)(han)接電(dian)(dian)(dian)流(liu)大，電(dian)(dian)(dian)弧(hu)中(zhong)(zhong)又存在容(rong)易(yi)電(dian)(dian)(dian)離的(de)元素，電(dian)(dian)(dian)源的(de)空(kong)載(zai)電(dian)(dian)(dian)壓高時，則(ze)電(dian)(dian)(dian)弧(hu)的(de)引(yin)燃(ran)(ran)就(jiu)容(rong)易(yi)。

焊接吸(xi)塵空間臂的主要用途(tu)和操作

    送絲(si)(si)(si)是焊(han)(han)接過程中(zhong)非(fei)常(chang)(chang)重要的一個操作環節，手工(gong)ya弧焊(han)(han)焊(han)(han)接的送絲(si)(si)(si)方法多采用(yong)焊(han)(han)工(gong)手指(zhi)捻動(dong)(dong)焊(han)(han)絲(si)(si)(si)來(lai)完成送絲(si)(si)(si)過程，焊(han)(han)工(gong)操作送絲(si)(si)(si)時(shi)非(fei)常(chang)(chang)不方便，懸(xuan)臂(bei)送絲(si)(si)(si)操作機廠家出售，滑膜工(gong)程新型TWA-I型自(zi)動(dong)(dong)送絲(si)(si)(si)機是一種(zhong)自(zi)動(dong)(dong)驅動(dong)(dong)的機械化(hua)送絲(si)(si)(si)裝置，其主要應用(yong)于手工(gong)焊(han)(han)接自(zi)動(dong)(dong)送絲(si)(si)(si)、自(zi)動(dong)(dong)ya弧焊(han)(han)自(zi)動(dong)(dong)送絲(si)(si)(si)、等離子焊(han)(han)自(zi)動(dong)(dong)送絲(si)(si)(si)和激光(guang)焊(han)(han)自(zi)動(dong)(dong)送絲(si)(si)(si)。系統(tong)采用(yong)微電腦控制(zhi)，步進減速(su)電機傳(chuan)動(dong)(dong)，送絲(si)(si)(si)精(jing)度高，可重復性(xing)好。

     因(yin)此，手(shou)(shou)工(gong)送絲(si)(si)準確性差、一(yi)致(zhi)性差、送絲(si)(si)不穩定，從(cong)而導(dao)致(zhi)了(le)焊(han)接(jie)生(sheng)產效率低(di)下，焊(han)接(jie)成(cheng)型一(yi)致(zhi)性差。另外，懸臂送絲(si)(si)操作(zuo)機(ji)生(sheng)產廠家(jia)，焊(han)工(gong)手(shou)(shou)持焊(han)絲(si)(si)長度有限，長時(shi)間焊(han)接(jie)時(shi)需要頻繁拿取焊(han)絲(si)(si)，焊(han)接(jie)效率較低(di)，且每段焊(han)絲(si)(si)焊(han)接(jie)完成(cheng)時(shi)都會留存(cun)一(yi)小段焊(han)絲(si)(si)無法使用，造成(cheng)了(le)浪(lang)費。

      激(ji)光(guang)切(qie)割(ge)機的工作原理(li)主要是(shi)(shi)將激(ji)光(guang)束(shu)(shu)聚焦(jiao)成(cheng)很(hen)小(xiao)的光(guang)點，焊接吸塵空間臂批(pi)發，懸臂送絲(si)操作機，其直(zhi)徑（可(ke)小(xiao)于0.1mm）；使焦(jiao)點處(chu)達到很(hen)高的功率密度（可(ke)超(chao)過 106 kw/cm2），這是(shi)(shi)光(guang)束(shu)(shu)輸入（光(guang)能轉換）的熱(re)量遠遠超(chao)過被材(cai)(cai)料(liao)反射的傳導或擴散部分(fen)，材(cai)(cai)料(liao)很(hen)快(kuai)加熱(re)至(zhi)汽化(hua)溫度，蒸發形(xing)成(cheng)孔(kong)洞，隨著光(guang)束(shu)(shu)與材(cai)(cai)料(liao)相對線性移動，使孔(kong)洞連接形(xing)成(cheng)寬度很(hen)窄（如0.1mm左(zuo)右）的切(qie)縫，切(qie)邊熱(re)影響很(hen)小(xiao)，基(ji)本(ben)沒(mei)有變形(xing)，無刺，精(jing)度高。

焊(han)接吸塵空間臂客戶使(shi)用效果圖

      焊接吸(xi)塵空(kong)間臂激(ji)光(guang)切(qie)(qie)(qie)割機(ji)與常(chang)規下料(liao)(liao)設備(bei)的對(dui)比 勤工(gong)激(ji)光(guang)針(zhen)對(dui)船體(ti)板(ban)(ban)材零件下料(liao)(liao)方式總結出主(zhu)要(yao)有四種：火焰(yan)切(qie)(qie)(qie)割、等(deng)離子切(qie)(qie)(qie)割、剪切(qie)(qie)(qie)加工(gong)以(yi)及激(ji)光(guang)切(qie)(qie)(qie)割。 焊接吸(xi)塵空(kong)間臂，設備(bei)性能的對(dui)比 其中(zhong)(zhong)火焰(yan)切(qie)(qie)(qie)割機(ji)能進行厚板(ban)(ban)的下料(liao)(liao)；等(deng)離子切(qie)(qie)(qie)割機(ji)速(su)度(du)(du)快；剪切(qie)(qie)(qie)加工(gong)材料(liao)(liao)利(li)用率高，但只能局限(xian)于(yu)對(dui)于(yu)直線邊零件的加工(gong)，切(qie)(qie)(qie)精(jing)度(du)(du)誤差較大；激(ji)光(guang)切(qie)(qie)(qie)割機(ji)主(zhu)要(yao)是切(qie)(qie)(qie)割精(jing)度(du)(du)高，設備(bei)穩(wen)定(ding)性高，切(qie)(qie)(qie)切(qie)(qie)(qie)割熱輸入(ru)小。但切(qie)(qie)(qie)割厚板(ban)(ban)速(su)度(du)(du)相對(dui)較慢。正(zheng)是由于(yu)精(jing)度(du)(du)高的優勢，懸臂送絲操作機(ji)生產(chan)商(shang)，激(ji)光(guang)切(qie)(qie)(qie)割機(ji)在高新(xin)產(chan)品薄(bo)板(ban)(ban)建(jian)造、分段(duan)建(jian)造過(guo)程中(zhong)(zhong)無(wu)余量精(jing)度(du)(du)管(guan)理、商(shang)船建(jian)造中(zhong)(zhong)對(dui)焊接坡口直線度(du)(du)要(yao)求高的工(gong)序(xu)：如FCB法(fa)(fa)拼(pin)板(ban)(ban)、雙絲埋(mai)4弧自動焊等(deng)方面，有著無(wu)可替代的優勢，這些(xie)激(ji)光(guang)切(qie)(qie)(qie)割機(ji)的有點(dian)為改(gai)類工(gong)法(fa)(fa)的順利(li)執行奠定(ding)了重要(yao)基礎。