電烙鐵怎么用
將(jiang)電(dian)(dian)(dian)(dian)烙鐵插(cha)入(ru)電(dian)(dian)(dian)(dian)進行預熱。將(jiang)電(dian)(dian)(dian)(dian)容的針腳調(diao)整好(hao),并(bing)插(cha)入(ru)印刷電(dian)(dian)(dian)(dian)路板。在(zai)(zai)電(dian)(dian)(dian)(dian)容針腳與電(dian)(dian)(dian)(dian)路板接(jie)(jie)觸(chu)處(chu)(chu)涂上少量焊(han)錫膏。將(jiang)預熱好(hao)的電(dian)(dian)(dian)(dian)烙鐵的烙鐵頭壓在(zai)(zai)針腳與電(dian)(dian)(dian)(dian)路板接(jie)(jie)觸(chu)處(chu)(chu)片刻,使局部溫度升高到(dao)錫絲(si)熔點。將(jiang)焊(han)錫絲(si)送到(dao)針腳與烙鐵頭接(jie)(jie)觸(chu)處(chu)(chu),當(dang)焊(han)錫量適當(dang)的時(shi)(shi)候撤去(qu)焊(han)錫絲(si),同(tong)時(shi)(shi)沿原件(jian)管腳移開烙鐵開成圓(yuan)潤的焊(han)點。用(yong)斜口鉗(qian)剪去(qu)多余的針腳,及完成了錫焊(han)操作。提(ti)示:錫焊(han)各步驟(zou)之間停留時(shi)(shi)間以及操作的正確性對(dui)焊(han)接(jie)(jie)質(zhi)量影響很大(da),需要在(zai)(zai)實踐中逐步掌(zhang)握。
電烙鐵不沾錫怎么辦
用小刀刮去電烙鐵頭氧化層,露出沒有被空氣氧化的銅;然后,放進松香盒里蘸一下,再沾上錫,就可以正常使用了。但用這種方法清除的不徹底,同時,長期刮下去,烙鐵咀會變細而影響傳熱,導致溫度下降,甚至損壞烙鐵咀。因此,選購電烙鐵品牌產(chan)品并注意不要空(kong)燒可以減少電烙鐵不沾錫情況。
電烙鐵溫度一般多少度
具(ju)體來說,需(xu)要(yao)(yao)直插電子料(liao)(liao)時,烙鐵頭的溫(wen)(wen)度(du)(du)應該設置(zhi)(zhi)在(zai)330-370度(du)(du)之(zhi)間,如果是表(biao)面貼裝物(wu)(wu)料(liao)(liao),溫(wen)(wen)度(du)(du)適(shi)宜在(zai)300-320度(du)(du)之(zhi)間,蜂鳴器的維修需(xu)要(yao)(yao)270-290度(du)(du)的溫(wen)(wen)度(du)(du),大(da)的組件腳的焊接溫(wen)(wen)度(du)(du)不能(neng)超過380度(du)(du),另外,對(dui)于特(te)(te)殊物(wu)(wu)料(liao)(liao),還需(xu)要(yao)(yao)對(dui)溫(wen)(wen)度(du)(du)進行特(te)(te)別設置(zhi)(zhi)。
電烙鐵為什么要用松香
1、松(song)(song)香(xiang)是助焊(han)(han)劑(ji),當烙(luo)(luo)鐵(tie)頭(tou)點(dian)(dian)一下松(song)(song)香(xiang)時,松(song)(song)香(xiang)發(fa)出(chu)“哧”的響聲并冒出(chu)一股白煙,說明溫度(du)合(he)適,可以焊(han)(han)接了。使(shi)用(yong)時,可以將(jiang)焊(han)(han)點(dian)(dian)、焊(han)(han)件涂上(shang)松(song)(song)香(xiang)(或(huo)者(zhe)燙熱后(hou)點(dian)(dian)一下),然后(hou),將(jiang)烙(luo)(luo)鐵(tie)頭(tou)、焊(han)(han)錫、焊(han)(han)點(dian)(dian)三(san)者(zhe)接觸,保(bao)持(chi)2-3秒鐘,待焊(han)(han)錫融化均(jun)勻(yun)后(hou),移(yi)開烙(luo)(luo)鐵(tie)頭(tou),即可完成焊(han)(han)接。
2、用松香(xiang),比較(jiao)(jiao)容易(yi)(yi)“吃(chi)錫(xi)”,焊出來(lai)的(de)點(dian)也比較(jiao)(jiao)亮,不容易(yi)(yi)形(xing)成虛焊。
3、松香(xiang)(xiang)防止氧化(hua)焊件(jian)先清除氧化(hua)層,在松香(xiang)(xiang)里(li)(li)掛錫。焊點處放(fang)在放(fang)點松香(xiang)(xiang),在松香(xiang)(xiang)里(li)(li)掛錫,再焊接。