Polyethylene (PE) isetyenziswa ngokubanzi kwiukugquma kunye nokusheathing kweentambo zombane kunye neentambo zonxibelelwanongenxa yamandla ayo omatshini abalaseleyo, ukuqina, ukumelana nobushushu, ukugquma, kunye nokuzinza kweekhemikhali. Nangona kunjalo, ngenxa yeempawu zesakhiwo se-PE ngokwayo, ukuchasana noxinzelelo lokusingqongileyo kumbi kakhulu. Lo mba uye ubonakale ngakumbi xa iPE isetyenziswa njenge sheath yangaphandle yeentambo ezixhobileyo zamacandelo amakhulu.
1. Inkqubo yoKuqhekezwa kwePE Sheath
Ukuqhekeka kwe-PE sheath kwenzeka ikakhulu kwiimeko ezimbini:
a. I-Environmental Stress Cracking: Oku kubhekiselele kwisenzeko apho i-sheath ihamba ngokuqhekeka kwe-brittle ukusuka kumphezulu ngenxa yoxinzelelo oludibeneyo okanye ukuvezwa kweendaba zokusingqongileyo emva kofakelo kunye nokusebenza kwentambo. Ibangelwa ikakhulu luxinzelelo lwangaphakathi ngaphakathi kwi-sheath kunye nokuba sesichengeni ixesha elide kulwelo olumhlophe. Uphando olubanzi malunga nokuguqulwa kwezinto eziphathekayo luzisombulule kakhulu olu hlobo lokuqhekeka.
b. I-Mechanical Stress Cracking: Oku kwenzeka ngenxa yokusilela kwesakhiwo kwikhebula okanye iinkqubo ezingafanelekanga ze-sheath extrusion, ezikhokelela ekugxininiseni okubalulekileyo kunye nokuqhekeka okubangelwa yi-deformation ngexesha lofakelo lwekhebula. Olu hlobo lokuqhekeka lubonakala ngakumbi kwiishethi zangaphandle zecandelo elikhulu leentambo zensimbi ezinezixhobo zokulwa.
2. Izinto ezibangela ukuqhekeka kwe-PE Sheath kunye naManyathelo oPhuculo
2.1 Impembelelo yeCableIteyiphu yentsimbiUlwakhiwo
Kwiintambo ezinobubanzi obukhulu bangaphandle, umaleko oxhobileyo udla ngokuqulunqwa ngokusonga kwetape yentsimbi ephindwe kabini. Ngokuxhomekeke kwi-diameter yangaphandle yentambo, ubukhulu betape yensimbi iyahluka (0.2mm, 0.5mm, kunye ne-0.8mm). Iiteyiphu zentsimbi ezishinyeneyo zinokuqina okuphezulu kunye neplastikhi ehlwempuzekileyo, ekhokelela kwisithuba esikhulu phakathi kwamaleya aphezulu nasezantsi. Ngexesha le-extrusion, oku kubangela ukungafani okubonakalayo kubukhulu be-sheath phakathi kwamaleko angaphezulu nangaphantsi omgangatho we-armored surface. Iindawo ezinqabileyo ze-sheath kwimida yeteyiphu yentsimbi yangaphandle zifumana uxinzelelo olukhulu kwaye zezona ndawo ziphambili apho uqhekeko lwexesha elizayo lwenzeka khona.
Ukunciphisa impembelelo ye-tape yensimbi exhobileyo kwi-sheath yangaphandle, i-buffering layer yobukhulu obuthile isongiwe okanye ikhutshwe phakathi kwe-tape yensimbi kunye ne-PE sheath. Lo maleko we-buffering kufuneka uxinene ngokufanayo, ngaphandle kwemibimbi okanye iiprotrusions. Ukongezwa kwe-buffering layer kuphucula ukuguquguquka phakathi kweengqimba ezimbini ze-tape yensimbi, kuqinisekisa ukuqina kwe-PE sheath, kwaye, kudibaniswa ne-contraction ye-PE sheath, kunciphisa uxinzelelo lwangaphakathi.
ONEWORLD ibonelela abasebenzisi ngeengqimba ezahlukeneyo zetape ekhandiweyo yentsimbi izixhoboukuhlangabezana neemfuno ezahlukeneyo.
2.2 Impembelelo yeNkqubo yokuVeliswa kweCable
Imiba ephambili kunye nenkqubo yokukhupha i-sheaths ye-cable ye-armored enkulu ye-armored ayikupholisa ngokwaneleyo, ukulungiswa kokungunda okungafanelekanga, kunye nomlinganiselo wokolula ngokugqithisileyo, okukhokelela kuxinzelelo olugqithisileyo lwangaphakathi ngaphakathi kwe-sheath. Iintambo zobukhulu obukhulu, ngenxa yeeshethi zazo ezishinyeneyo nezibanzi, zihlala zijongana nemida kubude kunye nomthamo wemisele yamanzi kwimigca yokuvelisa i-extrusion. Ukupholisa phantsi ukusuka ngaphezu kwama-200 degrees celsius ngexesha lokukhupha kwiqondo lobushushu begumbi kubangela imingeni. Ukupholisa okungonelanga kukhokelela kwisingxobo esithambileyo kufutshane nomgangatho wesikrweqe, okubangela ukukrwela kumphezulu we-sheath xa intambo ibhijelwe, ekugqibeleni kubangele iintanda kunye nokuqhekeka okunokwenzeka ngexesha lokubekwa kwentambo ngenxa yamandla angaphandle. Ngaphezu koko, ukupholisa okungonelanga kunegalelo ekwandeni kwamandla okuncipha kwangaphakathi emva kokujiyile, oko kuphakamisa umngcipheko wokuqhekeka kwesheath phantsi kwamandla amakhulu angaphandle. Ukuqinisekisa ukupholisa okwaneleyo, kuyacetyiswa ukuba kunyuswe ubude okanye umthamo wemikhombe yamanzi. Ukunciphisa isantya se-extrusion ngelixa ugcina iplastiki ye-sheath efanelekileyo kunye nokuvumela ixesha elaneleyo lokupholisa ngexesha lokubumba kubalulekile. Ukongezelela, ukuqwalasela i-polyethylene njenge-polymer ye-crystalline, indlela yokupholisa yokunciphisa ubushushu obuhlukeneyo, ukusuka kwi-70-75 ° C ukuya kwi-50-55 ° C, kwaye ekugqibeleni kwiqondo lokushisa, inceda ukunciphisa uxinzelelo lwangaphakathi ngexesha lokupholisa.
2.3 Impembelelo ye-Coiling Radius kwi-Cable Coiling
Ngexesha lokudibanisa ikhebula, abavelisi bahambelana nemigangatho yoshishino ekukhetheni ii-reels ezifanelekileyo zokuhambisa. Nangona kunjalo, ukulungiselela ubude obude bokuhanjiswa kweentambo ezinkulu zedayamitha yangaphandle kubangela imingeni ekukhetheni iireel ezifanelekileyo. Ukuhlangabezana nobude obuchaziweyo bokuhanjiswa, abanye abavelisi banciphisa i-reel barrel diameters, okubangela ukungonelanga kwerediya yokugoba kwintambo. Ukugoba okugqithisileyo kukhokelela ekufudukeni kumanqanaba esikrweqe, okubangela amandla amakhulu okucheba kwisingxobo. Kwiimeko ezinzima, i-armored steel strip's burrs inokugqobhoza i-cushioning layer, ingene ngokuthe ngqo kwi-sheath kwaye ibangele iintanda okanye iintanda ecaleni komcu wentsimbi. Ngexesha lokubeka intambo, ukugoba okusecaleni kunye nokutsalwa kwamandla kubangela ukuba i-sheath iqhekeke ecaleni kwezi ntanda, ngakumbi kwiintambo ezikufutshane kumaleko angaphakathi e-reel, ezenza ukuba zithande ukuphuka.
2.4 Impembelelo yoLwakhiwo kwisiza kunye nokuFakela okusingqongileyo
Ukulinganisa ukwakhiwa kwekhebula, kuyacetyiswa ukuba unciphise isantya sokubeka intambo, uthintele uxinzelelo oluthe kratya olusecaleni, ukugoba, ukutsala amandla, kunye nokungqubana komhlaba, ukuqinisekisa indawo yokwakha ephucukileyo. Ngokukhethekileyo, ngaphambi kokufakwa kwentambo, vumela ikhebula ukuba liphumle kwi-50-60 ° C ukukhulula uxinzelelo lwangaphakathi kwi-sheath. Kuthintele ukuvezwa ixesha elide kweentambo ekukhanyeni kwelanga, njengoko amaqondo obushushu ahlukeneyo kumacala ahlukeneyo entambo kunokukhokelela kuxinzelelo, okonyusa umngcipheko wokuqhekeka kwe-sheath ngexesha lokubekwa kwentambo.
Ixesha lokuposa: Dec-18-2023