pe管材熱熔承插控制要點

當熱熔承插連接時，加熱溫度不能太高，過長，溫度應控制在210±10℃，否則會導致pe管材內擠出太多漿液，減小水的內徑；同時應注意控制管件的角度和方向以避免返工。加熱板加熱時，PE管材界面處理不干凈，或加熱板存在油污、沉淀物等雜質，造成界面泄漏；加熱時間應控制好，加熱時間短，管吸熱時間不夠，會導致焊接接頭卷曲過小，加熱時間過長，會導致焊接接頭卷曲過大，形成假焊。pe給水管材

不同壁厚的pe管材如何接？

不同壁厚的管材（或管件）如果直接熱熔對接，由于熱板的加熱溫度相同，而管材與管材（或管材）熱熔區的截面積不一樣，而施加的熔接壓力相同，這樣會導致焊縫卷邊不一致，不能保證兩者之間的粘合效果，影響對接質量。 

PE管材熱熔連接標準規定

pe管材、管件以及管道附件的連接應采用熱熔連接（熱熔對接、熱熔承插連接、熱熔鞍形連接）或電熔連接（電熔承插連接、電熔鞍形連接）及機械連接（鎖緊型和非鎖緊型承插式連接、法蘭連接、鋼塑過度連接）。公稱外徑大于或等于63mm的管道不宜采用手工熱熔承插連接，壁厚<6mm的管材不宜使用熱熔對接的連接方法，聚乙烯管材、管件不得采用螺紋連接和粘接。管道各種連接應采用相應的專用連接工具。連接時嚴禁明火加熱。管道連接宜應采用同種牌號級別，壓力等級相同的管材、管件以及管道附件（不同牌號的管材以及管道附件之間的連接，應經過試驗，判定連接質量能得到保證后，方可連接）。pe給水管材

pe管(guan)(guan)(guan)(guan)(guan)(guan)材(cai)、管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)與(yu)金屬管(guan)(guan)(guan)(guan)(guan)(guan)、管(guan)(guan)(guan)(guan)(guan)(guan)道(dao)附件(jian)(jian)(jian)的(de)(de)(de)連接(jie)(jie)(jie)，當采用(yong)(yong)(yong)鋼制噴塑或(huo)球墨鑄鐵過(guo)度(du)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)時，其(qi)過(guo)度(du)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)的(de)(de)(de)壓(ya)力(li)等(deng)級不得(de)低于管(guan)(guan)(guan)(guan)(guan)(guan)材(cai)公稱(cheng)壓(ya)力(li)。在(zai)寒(han)冷氣候（-5℃以下）或(huo)大(da)風環境(jing)條件(jian)(jian)(jian)下進行熱熔(rong)(rong)或(huo)電(dian)熔(rong)(rong)連接(jie)(jie)(jie)操作時，應(ying)(ying)(ying)采取(qu)保護措(cuo)施，或(huo)調整連接(jie)(jie)(jie)機具(ju)的(de)(de)(de)工藝參數。管(guan)(guan)(guan)(guan)(guan)(guan)道(dao)連接(jie)(jie)(jie)時，管(guan)(guan)(guan)(guan)(guan)(guan)材(cai)切割(ge)應(ying)(ying)(ying)采用(yong)(yong)(yong)專用(yong)(yong)(yong)割(ge)刀或(huo)切管(guan)(guan)(guan)(guan)(guan)(guan)工具(ju)，切割(ge)斷面應(ying)(ying)(ying)平整、光(guang)滑、無毛刺，且應(ying)(ying)(ying)垂直于管(guan)(guan)(guan)(guan)(guan)(guan)軸線。聚乙(yi)烯(xi)（PE）給水管(guan)(guan)(guan)(guan)(guan)(guan)道(dao)熱熔(rong)(rong)對接(jie)(jie)(jie)應(ying)(ying)(ying)采用(yong)(yong)(yong)同(tong)廠(chang)家、同(tong)材(cai)質、同(tong)牌號的(de)(de)(de)管(guan)(guan)(guan)(guan)(guan)(guan)材(cai)與(yu)管(guan)(guan)(guan)(guan)(guan)(guan)材(cai)，管(guan)(guan)(guan)(guan)(guan)(guan)材(cai)與(yu)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)之間，管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)與(yu)管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)之間連接(jie)(jie)(jie)；不同(tong)SDR系列的(de)(de)(de)聚乙(yi)烯(xi)管(guan)(guan)(guan)(guan)(guan)(guan)材(cai)不宜采用(yong)(yong)(yong)熱熔(rong)(rong)對接(jie)(jie)(jie)連接(jie)(jie)(jie)，不同(tong)SDR系列的(de)(de)(de)管(guan)(guan)(guan)(guan)(guan)(guan)材(cai)、管(guan)(guan)(guan)(guan)(guan)(guan)件(jian)(jian)(jian)產(chan)品互(hu)焊(han)(han)時，宜通過(guo)機械加工使(shi)焊(han)(han)接(jie)(jie)(jie)處壁厚(hou)相(xiang)同(tong)。加熱完畢(bi)，待連接(jie)(jie)(jie)件(jian)(jian)(jian)應(ying)(ying)(ying)迅速脫(tuo)離加熱工具(ju)，檢(jian)查待連接(jie)(jie)(jie)件(jian)(jian)(jian)的(de)(de)(de)加熱面熔(rong)(rong)化(hua)的(de)(de)(de)均勻(yun)性和是否(fou)有損傷。然后，用(yong)(yong)(yong)均勻(yun)外力(li)使(shi)連接(jie)(jie)(jie)面完全接(jie)(jie)(jie)觸，并翻邊(bian)形成均勻(yun)一致的(de)(de)(de)凸(tu)緣，凸(tu)緣的(de)(de)(de)高(gao)度(du)和寬度(du)應(ying)(ying)(ying)符(fu)合有關(guan)規定(ding)。