Kutshanje, bendithetha nabathengi abaninzi abasebenza nobunjineli bemibhobho. Ndibona ukuba xa ukhetha umbhobho wangaphakathi, bahlala bexhalabile ngalo mbuzo: Umbhobho onePolyurethane Lined kunyeUmbhobho oneePolypropylene, yeyiphi engcono? Zonke izinto ezisisiseko yiSpiral Seam Welded Pipe, kodwa izinto ezingaphakathi zahlukile, kwaye ukusebenza kunye nexabiso zahlukile kakhulu.
Namhlanje, ngokuthatha umzekelo weCangzhou Spiral Steel Pipe Factory, ndiza kuyicacisa kakuhle le nto.
Masiqale nge-substrate. Le yisiseko.
Nokuba ingaphakathi lenziwe nge-PU okanye i-PP, izinto ezisisiseko zihlala zisetyenziswaUmthungo ojikelezayo welding PipeKukho abavelisi abaninzi eCangzhou abavelisa le mveliso, kodwa yiCangzhou Spiral Steel Pipes Group Co., Ltd. kuphela enokufikelela kwinqanaba elikhulu. Le nkampani yasekwa ngo-1993, igubungela indawo yeemitha zesikwere ezingama-350,000 eCangzhou, enempahla iyonke eyi-680 yezigidi zeeyuan kunye nabasebenzi abangama-680. Ingavelisa iitoni ezingama-400,000 zeepayipi zentsimbi ezijikelezayo ngonyaka, ezinexabiso lemveliso eliyi-1.8 yeebhiliyoni zeeyuan - esi silinganiso sibalulekile kushishino lwasekhaya.
Kodwa into egqiba ngokwenene ukuba lo mbhobho uza kuhlala ixesha elingakanani yinkqubo yokugquma enezintlu ezintathu.
Abantu abaninzi bagxila kuphela kumgca ongaphakathi, kodwa bayawalibala amanyathelo amathathu abalulekileyo: i-primer, i-adhesive, kunye nomaleko wangaphandle wokulwa nokugqwala. Masiwahlolisise ngalinye ngalinye.
Umaleko 1: I-Epoxy Resin Primer
Oku kufafazwa ngendlela yomgubo kwaye ubukhulu bako akufuneki bube ngaphantsi kwee-micrometer ezingama-60. Musa ukuyithatha lula le maleko incinci. Inoxanduva lokubopha kunye ne-substrate yombhobho wentsimbi. Ukuba i-primer ayenziwanga kakuhle, nokuba inamathele kakhulu phezulu, ayizukunceda nganto.
Umaleko wesibini: i-PE adhesive
Olu maleko lunokutshizwa okanye lukhutshwe. Ubukhulu obuncinci yi-140 micrometers. Kukho iinkcukacha zobugcisa ezifanele ukuqatshelwa apha: Iimfuneko zamandla okuxobuka kwiinkqubo zokutshiza umgubo kunye nokuxobuka zahlukile. Xa uthenga, qiniseka ukuba ubuza umthengisi ukuba yeyiphi inkqubo ayisebenzisayo. Ngaphandle koko, ukuba uyitsale kwindawo, iya kuxobula ulusu, nto leyo eya kuba yingxaki.
Umaleko wesithathu: Ingubo yangaphandle yePolyethylene
Olu maleko lolona lutyebileyo kwaye lwakhiwe ngokusila okanye ngokuphuma ngetyhubhu okanye ngeshiti. Emva kokugquma, kufuneka lupholiswe; kungenjalo, luya konakala xa lucinezelwe ngexesha lokuthuthwa. Ubukhulu bengubo iyonke buyahluka ngokuxhomekeke kububanzi bepayipi. Ukuba umbhobho uza kungcwatywa phantsi komhlaba okanye uthwalwe yimithwalo ebalulekileyo yoomatshini, ubukhulu bengubo obuncinci kufuneka bunyuswe ngeemilimitha ezili-0.7 ezongezelelweyo. Ixabiso elithile lihlala libonelelwa kwitheyibhile ngumenzi, kwaye ungakhetha ngokulula ngokutsho kwalo.
Buyela kumbuzo wokuqala: i-PU lining okanye i-PP lining?
Ngamafutshane, nantsi ingcebiso esekelwe kumava: Imibhobho efakwe kwi-polyurethane inokumelana nokuguguleka okungcono kwaye ifanelekile ukuthutha izinto eziqulathe amasuntswana aqinileyo, afana ne-slurry kunye namanzi amdaka;Imibhobho eneepolypropylenezinokumelana nobushushu obuphezulu kunye nokugqwala kweekhemikhali, kwaye zifanelekile kwiikhemikhali kunye neemeko zobushushu obuphezulu.
Ukuba uhlahlo-lwabiwo mali lweprojekthi luyavuma, kunokwenzeka ukuba unxibelelane nomenzi ukuze kwenziwe isisombululo esidibeneyo. Nangona kunjalo, imfuneko kukuba umgangatho wezinto ezisisiseko kunye nophahla olunemigangatho emithathu oluchasene nokugqwala lweSpiral Seam Welded Pipe kufuneka lube semgangathweni. Isizathu sokuba iCangzhou Spiral Steel Pipe Factory ikwazile ukuma iqinile kweli shishini kangangeminyaka emininzi, ngokwenyani, kukuba ilawula yonke inkqubo ngokwayo - ukuqengqa izinto ezisisiseko, ukufaka uphahla, kunye nokudibanisa ulwelo lwangaphakathi - oluthembeke ngakumbi kunokuthembela kubaboneleli abadibanisa iimveliso zabo.
Akukho mpendulo "echanekileyo" ecacileyo xa ukhetha umbhobho, kodwa kukho iindlela ezichanekileyo. Ndiyathemba ukuba eli nqaku linokukunceda uphephe ezinye iindlela ezingafunekiyo xa ukhetha phakathi kwe-PU kunye ne-PP.
Ixesha leposi: Meyi-28-2026