Polyethylene (PE) inoshandiswa zvakanyanya mukugadzirainsulation uye sheathing yemagetsi tambo uye telecommunication tambonekuda kwesimba rayo rakanaka remagetsi, kuoma, kudzivirira kupisa, kuvhara, uye kugadzikana kwemakemikari. Nekudaro, nekuda kwehunhu hwemagadzirirwo ePE pachayo, kuramba kwayo kune nharaunda kusagadzikana kupaza kune hurombo. Iyi nyaya inova yakakurumbira kana PE ichishandiswa seyekunze sheath yehombe-chikamu tambo dzehondo.
1. Mechanism yePE Sheath Cracking
PE sheath kupaza kunowanzoitika mumamiriro maviri:
a. Environmental Stress Cracking: Izvi zvinoreva chiitiko icho sheath inoputika brittle kubva pamusoro nekuda kwekusangana kushushikana kana kuratidzwa kune zvakatipoteredza midhiya mushure mekuisa tambo uye kushanda. Zvinonyanya kukonzerwa nekushushikana kwemukati mukati me sheath uye kuratidzwa kwenguva refu kune polar zvinwiwa. Tsvagiridzo yakadzama pamusoro pekugadzirisa zvinhu yakagadzirisa zvakanyanya rudzi urwu rwekutsemuka.
b. Mechanical Stress Cracking: Izvi zvinoitika nekuda kwekushaikwa kwechimiro mutambo kana zvisina kufanira sheath extrusion maitiro, zvichitungamira kune yakanyanya kushushikana kusungwa uye deformation-induced kupaza panguva yekuisa tambo. Rudzi urwu rwekutsemuka rwunonyanya kutaurwa mumasheti ekunze e-mahombe-chikamu simbi tepi tambo dzehondo.
2. Zvinokonzera PE Sheath Kuputika uye Matanho Ekuvandudza
2.1 Kufurira kweCableSimbi TapeChimiro
Mutambo dzine madhayamita makuru ekunze, iyo armored layer inowanzo umbwa nekaviri-layer simbi tape wraps. Zvichienderana nedhayamita yekunze yetambo, ukobvu hwetepi hwesimbi hunosiyana (0.2mm, 0.5mm, uye 0.8mm). Tepi dzakakora dzesimbi dzakasimba dzakasimba uye husina kunaka hwepurasitiki, zvichiita kuti pave nekusiyana kukuru pakati pepamusoro nepasi. Munguva yeextrusion, izvi zvinokonzeresa mutsauko wakakura mukukora kwesheath pakati pepamusoro nepasi pezvikamu zvearmored layer. Nzvimbo dzakatetepa sheath pamipendero yekunze tepi yesimbi inosangana nekushushikana kwakanyanya uye ndidzo nzvimbo dzekutanga dzinoitika kutsemuka mune ramangwana.
Kudzikamisa kukanganiswa kwetepi yesimbi yakashongedzwa pane sheath yekunze, buffering layer yehumwe ukobvu inoputirwa kana extruded pakati petepi yesimbi nePE sheath. Iyi buffering layer inofanira kuva yakafanana dense, isina wrinkles kana protrusions. Kuwedzerwa kwechivharo chekuvharidzira kunonatsiridza kutsetseka pakati pematanho maviri esimbi tepi, inovimbisa yunifomu yePE sheath ukobvu, uye, yakasanganiswa nechibvumirano chePE sheath, inoderedza kushushikana kwemukati.
ONEWORLD inopa vashandisi kukora kwakasiyana kwegalvanized simbi tepi armored zvinhukusangana nezvinodiwa zvakasiyana.
2.2 Impact yeCable Production process
Nyaya dzekutanga neiyo extrusion maitiro ekunze dhayamita dhayamita yakashongedzerwa tambo sheaths haina kukwana kutonhora, isina kufanira mold kugadzirira, uye yakanyanyisa kutambanudza reshiyo, zvichikonzera kushushikana kwakanyanya kwemukati mukati me sheath. Tambo dzakakura-hukuru, nekuda kwemashefu adzo akakora uye akafara, kazhinji anotarisana nemiganhu mukureba uye huwandu hwemadhishi emvura pamitsetse yekugadzira extrusion. Kutonhora pasi kubva pamusoro pe200 madhigirii celsius panguva yekuwedzera kune tembiricha yemumba kunopa matambudziko. Kutonhodza kusina kukwana kunotungamira kune sheath yakapfava padyo nenzvimbo yezvombo, zvichikonzera kukwenya pamusoro pesheath kana tambo yavharwa, zvichizoguma nekutsemuka nekutsemuka panguva yekuiswa kwetambo nekuda kwemasimba ekunze. Uyezve, kusakwana kutonhora kunobatsira kuwedzera kwemukati shrinkage masimba mushure mekukoira, zvichisimudza njodzi yekutsemuka kwesheath pasi pesimba rakakura rekunze. Kuti uve nechokwadi chekutonhodza zvakakwana, kuwedzera urefu kana kuwanda kwezvirongo zvemvura zvinokurudzirwa. Kudzikisa iyo extrusion kumhanya uchichengetedza yakakodzera sheath plasticization uye kubvumira nguva yakakwana yekutonhora panguva yekukoira kwakakosha. Pamusoro pezvo, kufunga polyethylene secrystalline polymer, nzira yakakamurwa yekudzikisa tembiricha yekutonhodza, kubva pa70-75°C kusvika 50-55°C, uye pakupedzisira kusvika pakamuri tembiricha, inobatsira kuderedza kushushikana kwemukati panguva yekutonhodza.
2.3 Pesvedzero yeCoiling Radhiyasi paCable Coiling
Munguva yekubatanidza tambo, vagadziri vanoomerera kune indasitiri zviyero zvekusarudza akakodzera kuendesa reels. Nekudaro, kugarisa kureba kwekutakura kwetambo huru dzekunze kwedhayamita kunopa matambudziko pakusarudza mareel akakodzera. Kuti tisangane nehurefu hwakatarwa hwekutumira, vamwe vagadziri vanodzikisa reel barrel madhayamita, zvichikonzera kusakwana kwekubhenda radii yetambo. Kunyanya kukotama kunotungamira mukusuduruka muzvikamu zvezvombo, zvichikonzera mauto makuru ekuveura pasheath. Muzviitiko zvakakomba, mabhura esimbi ane zvombo anogona kubaya cushioning layer, achipinda musheath uye achikonzera kutsemuka kana kuparuka kumucheto kwesimbi. Panguva yekuisa tambo, lateral kukotama nekukweva masimba anoita kuti sheath itsemuke padivi pemafissures aya, kunyanya kune tambo dziri padyo nemukati meiyo reel, zvichiita kuti iwedzere kutsemuka.
2.4 Mhedzisiro yeKuvaka Kwepanzvimbo uye Kuisa Nzvimbo
Kumisa kuvakwa kwetambo, zvinokurudzirwa kudzikisa tambo yekuisa kumhanya, kudzivirira yakawandisa lateral kumanikidza, kukotama, kudhonza mauto, uye kudhumhana kwepasi, kuve nechokwadi chebudiriro yekuvaka nharaunda. Zvichida, pamberi pekuisa tambo, bvumira tambo kuti igare pa50-60 ° C kuti isunungure kushushikana kwemukati kubva kune sheath. Dzivisa kuratidzwa kwenguva refu kwetambo kuchiedza chezuva, sezvo tembiricha dzakasiyana pamativi akasiyana etambo dzinogona kutungamira mukushushikana, zvichiwedzera njodzi yekutsemuka kwesheath panguva yekuiswa kwetambo.
Nguva yekutumira: Zvita-18-2023