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　　焊接完成后需要修復螺旋鋼管。以下是接口處(chu)(chu)理(li)方案。確(que)(que)保管(guan)(guan)(guan)道合格并(bing)經過表面處(chu)(chu)理(li)，并(bing)在安(an)(an)裝前清(qing)除套(tao)(tao)管(guan)(guan)(guan)內外(wai)的污(wu)垢(gou)和(he)污(wu)垢(gou)，以確(que)(que)保塑料粘接部件清(qing)潔(jie)。取(qu)出聚(ju)乙烯(xi)厚皮(pi)護套(tao)(tao)，寬度(du)(60cm)長度(du)在絕緣管(guan)(guan)(guan)周圍一周，重疊為3-5cm。 確(que)(que)定接頭套(tao)(tao)管(guan)(guan)(guan)和(he)聚(ju)乙烯(xi)外(wai)套(tao)(tao)的接頭尺寸，并(bing)將(jiang)接頭套(tao)(tao)管(guan)(guan)(guan)放在接頭處(chu)(chu)，以確(que)(que)保外(wai)套(tao)(tao)管(guan)(guan)(guan)。將(jiang)管(guan)(guan)(guan)子對中，然后用熱縮帶安(an)(an)裝。

　　(1)確(que)定熱(re)收(shou)(shou)縮帶(dai)和熱(re)收(shou)(shou)縮套管的(de)(de)重疊長度(du)(du)。(2)采用(yong)熱(re)收(shou)(shou)縮帶(dai)的(de)(de)長度(du)(du)。(3)將熱(re)收(shou)(shou)縮帶(dai)的(de)(de)一(yi)端切割成50×15mm的(de)(de)倒(dao)角。(4)在(zai)(zai)界面處向內包裹熱(re)收(shou)(shou)縮帶(dai)層，并確(que)保熱(re)收(shou)(shou)縮帶(dai)在(zai)(zai)搭(da)接(jie)處居中(zhong)(zhong)(zhong)(zhong)。(5)首(shou)先，將兩(liang)層經過研磨(mo)(mo)的(de)(de)熱(re)收(shou)(shou)縮帶(dai)依(yi)次用(yong)小火(huo)燒(shao)成，直(zhi)到膠層微粉化并研磨(mo)(mo)，然(ran)后(hou)膠層的(de)(de)壓(ya)制蓋子以搭(da)接(jie)接(jie)頭為(wei)中(zhong)(zhong)(zhong)(zhong)，然(ran)后(hou)用(yong)中(zhong)(zhong)(zhong)(zhong)火(huo)均勻(yun)烘(hong)烤(kao)壓(ya)蓋，直(zhi)到壓(ya)蓋與(yu)(yu)熱(re)收(shou)(shou)縮帶(dai)完全(quan)粘合，不會產(chan)生卷曲(qu)和氣泡。在(zai)(zai)加(jia)熱(re)過程(cheng)中(zhong)(zhong)(zhong)(zhong)，壓(ya)蓋或(huo)壓(ya)力輥可(ke)用(yong)于使壓(ya)蓋平滑以與(yu)(yu)熱(re)收(shou)(shou)縮帶(dai)緊密結合。(6)按壓(ya)壓(ya)蓋后(hou)，從(cong)熱(re)收(shou)(shou)縮帶(dai)的(de)(de)中(zhong)(zhong)(zhong)(zhong)間(jian)(jian)開始，首(shou)先烘(hong)烤(kao)與(yu)(yu)殼體重疊的(de)(de)一(yi)側，并在(zai)(zai)烘(hong)烤(kao)時(shi)從(cong)底部(bu)開始，并按照烘(hong)烤(kao)規則從(cong)下到上，從(cong)內到外。 為(wei)了避免產(chan)生氣泡，(7)調(diao)節噴射火(huo)焰的(de)(de)長度(du)(du)，首(shou)先沿熱(re)收(shou)(shou)縮帶(dai)的(de)(de)中(zhong)(zhong)(zhong)(zhong)部(bu)均勻(yun)加(jia)熱(re)，然(ran)后(hou)在(zai)(zai)中(zhong)(zhong)(zhong)(zhong)間(jian)(jian)收(shou)(shou)縮后(hou)依(yi)次加(jia)熱(re)端部(bu)。