Polyethylene (PE) e sebelisoa ka bongata hoho kenya lithapo tsa motlakase le likhoele tsa mehala ea puisanoka lebaka la matla a eona a babatsehang a mochine, ho tiea, ho hanyetsa mocheso, ho kenya letsoho, le botsitso ba lik'hemik'hale. Leha ho le joalo, ka lebaka la litšobotsi tsa sebopeho sa PE ka boeona, khanyetso ea eona khahlanong le khatello ea tikoloho e batla e fokola. Taba ena e totobala haholo ha PE e sebelisoa e le lesela le kantle la likhoele tse nang le likarolo tse kholo.
1. Mokhoa oa PE Sheath Cracking
Ho phatloha ha PE sheath ho etsahala haholo maemong a mabeli:
a. Environmental Stress Cracking: Sena se bolela ketsahalo eo sheath e nang le ho phatloha ho hoholo ho tloha holimo ka lebaka la khatello ea kelello e kopantsoeng kapa ho pepesehela mecha ea litaba ea tikoloho ka mor'a ho kenya le ho sebetsa ha cable. E bakoa haholo-holo ke khatello ea maikutlo ka hare ho sheath le ho ba nako e telele ho metsi a polar. Patlisiso e batsi mabapi le phetoho ea lintho tse bonahalang e rarollotse haholo mofuta ona oa petso.
b. Mechanical Stress Cracking: Sena se etsahala ka lebaka la bofokoli ba sebopeho ho thapo kapa lits'ebetso tse sa lokelang tsa sheath extrusion, e lebisang khatellong e kholo ea khatello ea maikutlo le ho phatloha ho bakoang ke deformation nakong ea ho kenya cable. Mofuta ona oa ho petsoha o bonahala haholoanyane ka har'a likhetla tse ka ntle tsa lithapo tsa tšepe tse nang le likarolo tse kholo.
2. Lisosa tsa PE Sheath Cracking le Mehato ea Ntlafatso
2.1 Tšusumetso ea CableTheipi ea tšepeSebopeho
Ka har'a likhoele tse nang le li-diameter tse kholoanyane tsa kantle, lesela le nang le lihlomo hangata le entsoe ka masela a tšepe a habeli. Ho ipapisitse le bophara ba ka ntle ba mohala, botenya ba tepi ea tšepe bo fapana (0.2mm, 0.5mm, le 0.8mm). Litheipi tse teteaneng tsa tšepe tse nang le lihlomo li na le ho tiea ho hoholo le polasetiki e futsanehileng, e bakang sebaka se seholo lipakeng tsa mealo e kaholimo le e tlase. Nakong ea extrusion, sena se baka phapang e kholo ho botenya ba sheath pakeng tsa likarolo tse ka holimo le tse ka tlaase tsa bokaholimo ba lihlomo. Libaka tse tšesaane tse mathōkong a tepi ea tšepe ea ka ntle li ba le khatello e kholo ea khatello ea maikutlo 'me ke libaka tsa mantlha moo ho phatloha ho tlang ho etsahala.
Ho fokotsa tšusumetso ea tepi ea tšepe e sirelelitsoeng ka har'a sheath e ka ntle, lesela le sirelelitsoeng la botenya bo itseng le phuthetsoe kapa le fetisoa pakeng tsa tepi ea tšepe le sheath ea PE. Sekhahla sena sa buffering se lokela ho ba se teteaneng ka mokhoa o ts'oanang, se se na wrinkles kapa protrusions. Ho eketsoa ha lera la buffering ho ntlafatsa boreleli lipakeng tsa likarolo tse peli tsa tepi ea tšepe, ho netefatsa botenya ba PE sheath e ts'oanang, 'me, ho kopantsoe le konteraka ea PE sheath, ho fokotsa khatello ea maikutlo ka hare.
ONEWORLD e fa basebelisi mefuta e fapaneng ea botenya bagalvanized steel tape thepa e hlometsengho kgotsofatsa ditlhoko tse fapaneng.
2.2 Tšusumetso ea Ts'ebetso ea Tlhahiso ea Cable
Litaba tse ka sehloohong tse nang le ts'ebetso ea extrusion ea likhetla tse kholo tsa ka ntle tse nang le bophara ba li-armored cable ke ho pholisa ho sa lekaneng, ho lokisoa ha hlobo ho sa lokelang, le karo-karolelano e feteletseng ea ho otlolla, e bakang khatello e feteletseng ea kahare ka har'a sheath. Lithapo tsa boholo bo boholo, ka lebaka la likhetla tsa tsona tse teteaneng le tse sephara, hangata li tobana le mefokolo boleleleng le bophahamong ba likotopo tsa metsi meleng ea tlhahiso ea extrusion. Ho bata ho tloha ho likhato tse fetang 200 tsa Celsius nakong ea extrusion ho mocheso oa kamore ho baka mathata. Pholiso e sa lekaneng e lebisa ho lekhalo le bonolo le haufi le lera la lihlomo, le bakang ho phunya holim'a sheath ha thapo e koaheloa, e qetellang e baka mapetsong a ka 'nang a robeha nakong ea ho behoa ha cable ka lebaka la matla a ka ntle. Ho feta moo, ho folisa ho sa lekaneng ho kenya letsoho ho eketsa matla a ka hare a ho honyela ka mor'a ho khoaela, ho eketsa kotsi ea ho phatloha ha sheath tlas'a matla a mangata a kantle. Ho etsa bonnete ba hore ho na le pholiso e lekaneng, ho kgothaletswa ho eketsa bolelele kapa boholo ba ditlwana tsa metsi. Ho theola lebelo la extrusion ha o ntse o boloka polasetiki e nepahetseng ea sheath le ho lumella nako e lekaneng ea ho pholisa nakong ea ho kolobisa ho bohlokoa. Ho phaella moo, ho nahana ka polyethylene e le crystalline polymer, mokhoa oa ho fokotsa mocheso o arohaneng, ho tloha ho 70-75 ° C ho ea ho 50-55 ° C, 'me qetellong ho mocheso oa kamore, ho thusa ho fokotsa khatello ea kelello ea ka hare nakong ea pholileng.
2.3 Tšusumetso ea Radius ea ho Coiling ho Coiling ea Cable
Nakong ea li-cable coiling, bahlahisi ba khomarela litekanyetso tsa indasteri bakeng sa ho khetha li-reel tse nepahetseng tsa ho fana. Leha ho le joalo, ho nka nako e telele ea ho fana ka lithapo tse kholo tsa bophara ba ka ntle ho baka mathata a ho khetha li-reel tse loketseng. E le ho finyella bolelele bo boletsoeng, bahlahisi ba bang ba fokotsa li-diameter tsa reel barrel, e leng se etsang hore ho be le radii e sa lekaneng ea ho kobeha bakeng sa thapo. Ho kobeha ho feteletseng ho lebisa ho fallisetsoang ha lihlomo tsa lihlomo, ho baka matla a maholo a ho kuta ka sheath. Maemong a boima haholo, li-burrs tsa tšepe e sirelelitsoeng li ka phunya lesela le sirelelitsoeng, la kenella ka kotloloho ka har'a sheath le ho baka mapetsong kapa mapheo moeling oa mohala oa tšepe. Nakong ea ho beha lithapo, matla a ho kobeha ka mahlakoreng le a ho hula a etsa hore sheath e phatlohe haufi le maphao ana, haholo-holo bakeng sa likhoele tse haufi le likarolo tse ka hare tsa reel, e leng ho etsang hore li senyehe habonolo.
2.4 Kameho ea Tikoloho ea Kaho le Tlhophiso Setšeng
Ho tiisa kaho ea lithapo, ho eletsoa ho fokotsa lebelo la ho beha lithapo, ho qoba khatello e feteletseng ea lateral, ho kobeha, ho hula matla le ho thulana ha holim'a metsi, ho netefatsa tikoloho ea kaho e tsoetseng pele. Ka ho khetheha, pele ho kenngoa ha cable, lumella mohala hore o phomole ho 50-60 ° C ho lokolla khatello ea ka hare ho tloha sheath. Qoba ho pepesehela lithapo nako e telele ho khanya ea letsatsi, kaha lithempereichara tse fapaneng mahlakoreng a fapaneng a thapo li ka lebisa khatellong ea maikutlo, tsa eketsa kotsi ea ho phatloha ha sheath nakong ea ho beha cable.
Nako ea poso: Dec-18-2023