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一、高密(mi)度(du)聚(ju)乙烯管(guan)(簡稱:HDPE)
高密度聚乙(yi)烯管,PE管價格,材料是“HDPE”,簡稱(cheng) “High Density Polyethylene'。HDPE是一種結晶度高、非極性的(de)熱塑性樹脂。原態HDPE的(de)外表呈乳白(bai)色,在微薄截面(mian)呈一定程(cheng)度的(de)半(ban)透明狀(zhuang)。
HDPE具有良好的耐熱(re)性(xing)(xing)(xing)和耐寒(han)性(xing)(xing)(xing),化學穩定性(xing)(xing)(xing)好,還具有較(jiao)高的剛性(xing)(xing)(xing)和韌性(xing)(xing)(xing),機械強度好,介(jie)電(dian)性(xing)(xing)(xing)能(neng),耐環境(jing)應力開裂性(xing)(xing)(xing)亦較(jiao)好。
二、聚乙烯管(簡(jian)稱:PE)
PE管(guan)是(shi)聚(ju)乙烯塑(su)料管(guan),PE是(shi)基礎(chu)的(de)一種塑(su)料,具有優良的(de)耐大多數生活和工(gong)業用化學品的(de)特性。
聚(ju)乙烯(xi)(xi)(polyethylene ,簡稱PE)是乙烯(xi)(xi)經聚(ju)合(he)制得的一種(zhong)熱塑性樹脂(zhi)。在工業上(shang),也包括乙烯(xi)(xi)與少量α-烯(xi)(xi)烴的共(gong)聚(ju)物。聚(ju)乙烯(xi)(xi)無(wu)臭,***,手感似(si)蠟(la),具有優良的耐低溫性能(neng)(使用溫度(du)可達-100~-70°C),化學(xue)穩定性好(hao),能(neng)耐大多數酸堿的侵蝕(不(bu)耐具有氧化性質的酸)。常溫下不(bu)溶(rong)于一般溶(rong)劑,吸(xi)水性小,電絕緣性優良。
PE管(guan)(guan)熱(re)(re)(re)熔(rong)連(lian)(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)的(de)(de)(de)(de)溫(wen)(wen)度(du)(du)一般在(zai)**210﹨~230℃**之間。這個溫(wen)(wen)度(du)(du)范圍是(shi)(shi)根據PE管(guan)(guan)的(de)(de)(de)(de)材質(zhi)(zhi)(zhi)和規格確(que)(que)定的(de)(de)(de)(de),以確(que)(que)保(bao)管(guan)(guan)道(dao)連(lian)(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)的(de)(de)(de)(de)質(zhi)(zhi)(zhi)量和密(mi)(mi)封(feng)性(xing)。熱(re)(re)(re)熔(rong)連(lian)(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)是(shi)(shi)將(jiang)(jiang)兩(liang)根PE管(guan)(guan)道(dao)的(de)(de)(de)(de)配(pei)合面(mian)緊(jin)貼在(zai)加(jia)(jia)熱(re)(re)(re)工具上(shang)來(lai)加(jia)(jia)熱(re)(re)(re)其(qi)平(ping)整的(de)(de)(de)(de)端(duan)面(mian)直至熔(rong)融。在(zai)加(jia)(jia)熱(re)(re)(re)過(guo)(guo)程中,需(xu)要(yao)(yao)控(kong)制加(jia)(jia)熱(re)(re)(re)工具的(de)(de)(de)(de)溫(wen)(wen)度(du)(du)和時(shi)(shi)間,以確(que)(que)保(bao)管(guan)(guan)道(dao)端(duan)面(mian)能(neng)(neng)夠充分(fen)熔(rong)融。加(jia)(jia)熱(re)(re)(re)溫(wen)(wen)度(du)(du)過(guo)(guo)高(gao)或(huo)(huo)過(guo)(guo)低都會影響連(lian)(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)質(zhi)(zhi)(zhi)量,溫(wen)(wen)度(du)(du)過(guo)(guo)高(gao)可能(neng)(neng)導(dao)致(zhi)管(guan)(guan)道(dao)燒焦(jiao)或(huo)(huo)變形(xing),溫(wen)(wen)度(du)(du)過(guo)(guo)低則(ze)可能(neng)(neng)導(dao)致(zhi)管(guan)(guan)道(dao)連(lian)(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)不牢固或(huo)(huo)漏(lou)水。除了溫(wen)(wen)度(du)(du)控(kong)制外,熱(re)(re)(re)熔(rong)連(lian)(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)還需(xu)要(yao)(yao)注(zhu)意以下幾點(dian):1.管(guan)(guan)道(dao)端(duan)面(mian)必須平(ping)整、清潔(jie)、無油污和雜質(zhi)(zhi)(zhi),以確(que)(que)保(bao)連(lian)(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)質(zhi)(zhi)(zhi)量。2.在(zai)加(jia)(jia)熱(re)(re)(re)過(guo)(guo)程中,要(yao)(yao)保(bao)持加(jia)(jia)熱(re)(re)(re)工具的(de)(de)(de)(de)勻速(su)移動,避(bi)免停留時(shi)(shi)間過(guo)(guo)長或(huo)(huo)移動過(guo)(guo)快(kuai)導(dao)致(zhi)加(jia)(jia)熱(re)(re)(re)不均勻。3.移走加(jia)(jia)熱(re)(re)(re)工具后(hou),要(yao)(yao)迅速(su)將(jiang)(jiang)兩(liang)個熔(rong)融的(de)(de)(de)(de)端(duan)面(mian)緊(jin)靠(kao)在(zai)一起(qi),并保(bao)持一定的(de)(de)(de)(de)壓力,PE排水管(guan)(guan),使管(guan)(guan)道(dao)連(lian)(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)緊(jin)密(mi)(mi)。4.在(zai)連(lian)(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)完成后(hou),要(yao)(yao)檢查連(lian)(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)處(chu)是(shi)(shi)否有(you)漏(lou)水或(huo)(huo)滲漏(lou)現象,PE管(guan)(guan),如有(you)需(xu)要(yao)(yao)及(ji)時(shi)(shi)處(chu)理。總之,PE管(guan)(guan)熱(re)(re)(re)熔(rong)連(lian)(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)的(de)(de)(de)(de)溫(wen)(wen)度(du)(du)控(kong)制是(shi)(shi)確(que)(que)保(bao)連(lian)(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)質(zhi)(zhi)(zhi)量的(de)(de)(de)(de)關(guan)鍵。在(zai)實際操作中,需(xu)要(yao)(yao)根據具體情況選擇合適的(de)(de)(de)(de)溫(wen)(wen)度(du)(du)和時(shi)(shi)間,并注(zhu)意操作細節(jie),以確(que)(que)保(bao)管(guan)(guan)道(dao)連(lian)(lian)(lian)(lian)(lian)(lian)接(jie)(jie)(jie)的(de)(de)(de)(de)質(zhi)(zhi)(zhi)量和密(mi)(mi)封(feng)性(xing)。
PE管有哪些連(lian)接(jie)方式:
1.熱(re)(re)熔(rong)連(lian)接(jie)(jie)(jie):熱(re)(re)熔(rong)連(lian)接(jie)(jie)(jie)是用(yong)加熱(re)(re)工具,在壓力下加熱(re)(re)聚乙烯管材或管件(jian)的待連(lian)接(jie)(jie)(jie)部(bu)位,使其熔(rong)融后,移走加熱(re)(re)工具,施壓將兩個熔(rong)融面(mian)連(lian)在一起(qi),在穩定的壓力下保持(chi)一段時間,直到接(jie)(jie)(jie)頭冷卻(que)。
2.電(dian)(dian)熔(rong)連接(jie)(jie):電(dian)(dian)熔(rong)連接(jie)(jie)是用內埋電(dian)(dian)阻絲(si)的電(dian)(dian)熔(rong)管件與管材(cai)或管件的連接(jie)(jie)部位(wei)緊密接(jie)(jie)觸通(tong)電(dian)(dian),通(tong)過內埋的電(dian)(dian)阻絲(si)加熱連接(jie)(jie)部位(wei),使其(qi)熔(rong)融連為一(yi)體(ti),PE給水管,直至接(jie)(jie)頭冷(leng)卻(que)。
3.承插(cha)式柔性(xing)連接:聚(ju)(ju)乙烯管道承插(cha)式柔性(xing)連接是在聚(ju)(ju)乙烯管材(cai)(cai)一端(duan)焊接一個經過(guo)加(jia)固(gu)的(de)(de)聚(ju)(ju)乙烯承口。將(jiang)聚(ju)(ju)乙烯管材(cai)(cai)一端(duan)直(zhi)接插(cha)入管材(cai)(cai)或管件的(de)(de)定制的(de)(de)承口中,通過(guo)承口內的(de)(de)鎖緊環壓(ya)緊抗(kang)拉拔、橡(xiang)膠(jiao)密封圈壓(ya)緊密封。
4.法(fa)蘭連(lian)接(jie)(jie):法(fa)蘭連(lian)接(jie)(jie)主要由聚(ju)乙烯法(fa)蘭連(lian)接(jie)(jie)件、鋼(gang)制(zhi)或鋁制(zhi)背壓活套法(fa)蘭、鋼(gang)制(zhi)或鋁制(zhi)法(fa)蘭片(pian)(pian)、墊片(pian)(pian)或密封圈、螺栓(shuan)、螺母(mu)等組成。通過(guo)緊(jin)固(gu)螺栓(shuan)、螺母(mu),使(shi)法(fa)蘭連(lian)接(jie)(jie)件與法(fa)蘭片(pian)(pian)緊(jin)密接(jie)(jie)觸。
5.鋼塑過渡接頭連接:鋼塑過渡接頭連接是采用通過冷壓或其它方式預制的鋼塑過渡接頭來連接聚乙烯管道和金屬管道。
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