Kana iyo tambo system yakaiswa pasi pevhu, munzira yepasi pevhu kana mumvura inowanzoitika kuunganidzwa kwemvura, kuitira kudzivirira mhute yemvura uye mvura kuti isapinde mutambo yekuvharisa tambo uye kuve nechokwadi chehupenyu hwesevhisi yetambo, tambo inofanirwa kutora radial impervious barrier layer structure, iyo inosanganisira sheath yesimbi uye simbi-plastiki inoumbwa sheath. Mutobvu, mhangura, aruminiyamu uye zvimwe simbi zvinhu zvinowanzoshandiswa sesimbi sheaths tambo; Tepi yesimbi-yepurasitiki inosanganiswa uye polyethylene sheath inoumba simbi-plastiki inoumbwa sheath yetambo. Metal-plastic composite sheathing, inonziwo comprehensive sheathing, inoratidzwa nekupfava, kutakurika, uye kupinza kwemvura idiki pane epurasitiki, rabha sheathing, yakakodzera nzvimbo dzine yakakwira isingapinde mvura zvinodiwa, asi zvichienzaniswa nesimbi sheathing, simbi-plastiki inoumbwa. sheathing ichine imwe permeability.
MuEuropean medium voltage cable standards akadai seHD 620 S2: 2009, NF C33-226: 2016, UNE 211620: 2020, single-side coated plastic coated aluminum tepi inoshandiswa sevhavha yakazara isina mvura yetambo dzemagetsi. Iyo metal layer ye single-sidedplastiki yakavharwa aluminium tepiiri kutarisana zvakananga ne insulating shield, uye inotamba basa resimbi shield panguva imwe chete. Muchiyero cheEuropean, zvinodikanwa kuti uedze simba rekubvisa pakati pepurasitiki yakavharwa tepi yealuminium uye tambo sheath uye kuita corrosion resistance bvunzo kuyera radial mvura kuramba tambo; Panguva imwecheteyo, zvinodikanwa zvakare kuyera kupikisa kweDC kwepurasitiki yakavharwa tepi yealuminium kuyera kugona kwayo kutakura pfupi dunhu ikozvino.
1. Kurongwa kwepurasitiki yakavharwa tepi yealuminium
Zvinoenderana nehuwandu hwakasiyana hwefirimu repurasitiki rakaputirwa nealuminium substrate zvinhu, rinogona kupatsanurwa mumhando mbiri dzelongitudinal coating process: maviri-mativi epurasitiki akavharidzirwa tepi yealuminium uye imwe-sided epurasitiki yakavharwa aluminium tepi.
Iyo yakazara isingapinde mvura uye hunyoro-humbowo inodzivirira layer yepakati uye yakaderera voltage emagetsi tambo uye tambo dzemaziso dzakagadzirwa nekaviri-mativi epurasitiki akavharidzirwa aluminium tepi uye polyethylene, polyolefin uye kumwe sheathing inoita basa remvura yeradial uye hunyoro-uchapupu. Single-sided plastic coated aluminium tepi inonyanya kushandiswa kudzivirira simbi yetambo dzekutaura.
Mune mimwe mipimo yeEurope, pamusoro pekushandiswa seyakazara isingapindi mvura, tepi yepurasitiki yakavharwa nearuminiyamu ine divi rimwe chete inoshandiswa sechivharo chesimbi patambo dzepakati nepakati, uye aluminium tepi inodzivirira ine mutengo wakajeka uchienzaniswa nekudzivirira kwemhangura.
2. Longitudinal kuputira nzira yepurasitiki yakavharwa tepi yealuminium
Iyo longitudinal yekuputira maitiro ealuminium-yepurasitiki composite strip inoreva maitiro ekushandura epurasitiki yakavharwa tepi yealuminium kubva kune yekutanga flat shape kusvika kune chubhu chimiro kuburikidza neyakatevedzana yemold deformation, uye kubatanidza mipendero miviri yepurasitiki yakavharwa tepi yealuminium. Mipendero miviri yepurasitiki yakavharwa tepi yealuminium yakatsetseka uye yakatsetseka, mipendero yakasungwa zvakasimba, uye hapana aluminium-plastiki peeling.
Maitiro ekushandura tepi yepurasitiki yakavharwa nealuminium tepi kubva pachimiro chakati sandara kuenda kune tubular chimiro inogona kuoneka nekushandisa iyo longitudinal yekuputira die inoumbwa nerengitudinal kuputira nyanga kufa, mutsara unodzikamisa kufa uye saizi kufa. Iyo inoyerera dhayagiramu yelongitudinal kuputira kuumbwa kufa kwepurasitiki yakavharwa tepi yealuminium inoratidzwa mumufananidzo unotevera. Mipendero miviri yetubula yepurasitiki yakavharwa tepi yealuminium inogona kusungwa nemaitiro maviri: kupisa kusungirirwa uye kutonhora kusungirirwa.
(1) Kupisa kwekubatanidza maitiro
Iyo yekupisa yekubatanidza maitiro ndeye kushandisa purasitiki layer yepurasitiki yakavharwa tepi yealuminium kupfava pa70 ~ 90 ℃. Mukuita deformation yepurasitiki yakavharwa tepi yealuminium, mupendero wepurasitiki pajojo repurasitiki yakavharidzirwa tepi yealuminium inopisa uchishandisa pfuti inopisa yemhepo kana blowtorch moto, uye mipendero miviri yepurasitiki yakavharwa tepi yealuminium inobatanidzwa pamwechete vachishandisa viscosity. mushure mekunyorova kwepurasitiki. Namira mipendero miviri yepurasitiki yakavharwa tepi yealuminium zvakasimba.
(2) Cold bonding process
Iyo inotonhora yekubatanidza nzira yakakamurwa kuita marudzi maviri, imwe ndeyekuwedzera refu yakagadzikana kufa pakati peiyo caliper kufa uye iyo extruder musoro, kuitira kuti epurasitiki yakavharwa aluminium tepi inochengetedza yakagadzikana tubular chimiro isati yapinda mumusoro weiyo extruder. , kubuda kweiyo yakagadzikana kufa kuri pedyo nekubuda kweiyo extruder's die core, uye iyo aruminiyamu-plastiki composite pakarepo inopinda mu extruder's die core mushure mekutora yakagadzikana kufa. Iyo extrusion pressure ye sheath material inochengeta tubular chimiro chepurasitiki yakavharwa aluminium tepi, uye tembiricha yepamusoro yepurasitiki yakawedzera inopfavisa purasitiki yepurasitiki yakavharwa tepi yealuminium kuti ipedze basa rekubatanidza. Iyi tekinoroji yakanakira kaviri-sided laminated plastiki coated aluminium tepi, michina yekugadzira iri nyore kushanda, asi kugadzira mold kwakaoma, uye tepi yepurasitiki yakavharwa nealuminium tepi iri nyore kudzorera.
Imwe inotonhora yekubatanidza maitiro iko kushandiswa kweanopisa anonyunguduka adhesive bonding, inopisa inonyunguduka yakanyungudutswa neextrusion muchina mune longitudinal kuputira nyanga mold chinzvimbo chakadzvanywa kune rimwe divi rekunze kwekunze kwepurasitiki yakavharwa tepi yealuminium, iyo mbiri yekumucheto nzvimbo dzepurasitiki. yakavharwa tepi yealuminium kuburikidza nemutsetse wakagadzikana uye saizi inofa mushure mekupisa kunyunguduka kunonamira bonding. Iyi tekinoroji yakakodzera kune ese ari maviri-mativi epurasitiki akavharidzirwa aluminium tepi uye imwechete-sided epurasitiki yakavharidzirwa tepi yealuminium. Iyo mold yekugadzirisa uye michina yekugadzira iri nyore kushanda, asi yayo yekubatanidza inokanganiswa zvakanyanya nemhando yekupisa inonyungudika inonamatira.
Kuti ive nechokwadi chekuvimbika kwekushanda kwetambo system, simbi shield inofanira kunge yakabatana nemagetsi nekudzivirira nhovo yetambo, saka iyo imwe-sided yepurasitiki yakavharidzirwa tepi yealuminium inofanira kushandiswa sesimbi shield yetambo. Semuenzaniso, iyo inopisa yekubatanidza nzira inotaurwa mubepa rino inokodzera chete mativi maviriplastiki yakavharwa aluminium tepi, nepo inotonhora yekubatanidza maitiro uchishandisa inopisa melt adhesive inonyanya kukodzera kune imwechete-sided epurasitiki yakavharwa aluminium tepi.
Nguva yekutumira: Jul-30-2024