立(li)焊(han)使用(yong)的方法步(bu)驟有(you)這兩種(zhong)(zhong):某種(zhong)(zhong)是由下(xia)往右施焊(han),統稱(cheng)往右立(li)焊(han);另某種(zhong)(zhong)是由上朝下(xia)施焊(han),統稱(cheng)朝下(xia)立(li)焊(han)。到(dao)目前為(wei)止生產的中(zhong)利用(yong)很廣(guang)泛的是由下(xia)往右施焊(han),在熟練(lian)中(zhong)為(wei)此種(zhong)(zhong)的方法步(bu)驟為(wei)本(ben)點。
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向(xiang)左立焊操作方法要領
1)悍接工藝時先挑(tiao)選較小(xiao)長度的不銹(xiu)鋼焊絲(2.5mm~4mm),較小(xiao)的悍接工藝交流電(比平嫁(jia)接焊小(xiao)10%~15% ) ,這么熔(rong)池體型小(xiao),冷(leng)凝初凝快,就(jiu)能夠增多(duo)和解決熔(rong)融合金金屬下淌。
2)選用(yong)短弧(hu)焊(han)(han)接(jie)工藝,電(dian)(dian)弧(hu)放(fang)電(dian)(dian)焊(han)(han)接(jie)寬度(du)不(bu)多(duo)于焊(han)(han)管孔徑,充(chong)分利用(yong)電(dian)(dian)弧(hu)放(fang)電(dian)(dian)焊(han)(han)接(jie)吹力托住熔池,同(tong)時(shi)短弧(hu)實操(cao)有利于熔滴過渡期。
3)電(dian)焊絲(si)任務角度(du)來為90°,前彎角為-10~-30°,即電(dian)焊絲(si)向氬弧焊導(dao)向的反(fan)導(dao)向偏(pian)移,這樣的話(hua)電(dian)弧放(fang)電(dian)吹力對熔池產生了學習的拉力,處(chu)理(li)熔解金屬材料(liao)下淌。
4)為以(yi)及(ji)左(zuo)手操作步驟(zou)和觀看熔(rong)池的情況,焊(han)接體千萬不(bu)要(yao)正對(dui)著(zhu)焊(han)口,要(yao)略向右(you)偏。
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往下立焊法
向右立(li)(li)焊(han)(han)法只(zhi)可采用鋁(lv)(lv)合金薄板和反(fan)以(yi)首要機構的不銹鋼對焊(han)(han),因向右立(li)(li)焊(han)(han)比朝下立(li)(li)焊(han)(han)熔(rong)融鋁(lv)(lv)合金及(ji)熔(rong)渣(zha)更易墜(zhui)脹(zhang),對焊(han)(han)易呈現夾渣(zha)隨和孔等(deng)常見問題(ti)。向右立(li)(li)焊(han)(han)法的特色是(shi)不銹鋼對焊(han)(han)快速快.熔(rong)深淺(qian)不同(tong),熔(rong)薄厚,很(hen)容易燒(shao)穿(chuan),對焊(han)(han)冷沖壓(ya)牢(lao)固,基本控制簡潔(jie),但(dan)須(xu)要熱練熟知基本控制技(ji)巧攻略。其基本控制步驟給出(chu):
l)焊接方法電流值(zhi)應便宜,衡量熔合積極;
2)點焊時,使(shi)焊材垂(chui)直于焊件(jian)界面用曝(pu)出法引弧(hu),運條(tiao)所采(cai)用較大的焊材傾斜(xie)角,約為30~40°,借助電(dian)弧(hu)放(fang)電(dian)吹力(li)托住熔池(chi),杜(du)絕熔池(chi)下淌;
3)主要采用(yong)直線性運(yun)條法(fa),時應以免(mian) 橫(heng)項甩動,但偶(ou)而也可(ke)稍作橫(heng)項甩動,以便于手(shou)工焊接生(sheng)產縫隙右側與(yu)低合(he)金鋼熔(rong)合(he)優異。從(cong)(cong)下(xia)向上(shang)立焊法(fa)合(he)適(shi)利(li)用(yong)熔(rong)渣用(yong)戶(hu)粘(zhan)度(du)太大的從(cong)(cong)下(xia)向上(shang)立焊專門焊管。除(chu)利(li)用(yong)討論(lun)會手(shou)工焊接生(sheng)產24v外(wai)接電(dian)(dian)(dian)源外(wai),常見直流(liu)電(dian)(dian)(dian)壓(ya)外(wai)接電(dian)(dian)(dian)源弧焊24v外(wai)接電(dian)(dian)(dian)源都(dou)應利(li)用(yong)直流(liu)電(dian)(dian)(dian)壓(ya)外(wai)接電(dian)(dian)(dian)源反接法(fa)手(shou)工焊接生(sheng)產。
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