I-Anti{0}}imibhobho yentsimbi yokubola zizinto eziyimfuneko kushishino lwangoku kunye nolwakhiwo lweziseko ezingundoqo. Umgangatho wenkqubo yabo yokubumba umisela ngokuthe ngqo ubomi babo benkonzo kunye nokusebenza kokhuseleko. Njengoko iimfuno zokuxhathisa umhlwa kwimibhobho yeoyile, irhasi, imichiza, kunye nobunjineli bakamasipala iqhubeka nokukhula, ubuchwephesha bokwenza imibhobho yentsimbi echasene -nobuqhophololo nabo buqhubeka nokuveliswa kwezinto ezintsha. Eli nqaku liza kuphonononga kwinkqubo yokwenza i-core ye-anti{5}}ipayipi yentsimbi ye-corrosion, inikezela uhlalutyo olubanzi lwenkqubo yokuvelisa ukusuka kwiinkqubo ezisisiseko ukuya kwiinkcukacha eziphambili zobugcisa.
I. IMigaqo yokuSeka eyiSiseko yeMibhobho yentsimbi echasene{1}}nokonakala
I-Anti{0}}imibhobho yentsimbi enomhlwa iqulathe isiseko sombhobho wentsimbi oqhelekileyo oqatywe ngoomaleko omnye okanye ngaphezulu kwezinto ezichasayo{1}}ngenkqubo ethile, eyenza ulwakhiwo oludityanisiweyo "lwezinto ezisisiseko +-zomaleko wokutya." Eyona njongo yale nkqubo yokwenziwa kukuqinisekisa iimpawu zoomatshini bombhobho wentsimbi (ezifana noxinzelelo kunye nokuxhathisa impembelelo) ngelixa ulawula ngokuchanekileyo ukunamathela, ukufana kobuninzi, kunye nokuzinza kweekhemikhali ze-anti{5}}i-corrosion layer ukuphumeza ukhuseleko lwexesha elide{6}}lombhobho kwiindawo ezintsonkothileyo (ezifana nokufuma okuphezulu, i-asidi eyomeleleyo, i-alkalis, kunye netyuwa).
Ukwenziwa kombhobho wentsimbi ngokwesiqhelo kuxhomekeke kwinkqubo "yokuqengqeleka + ukuwelda"{1}}ibillet yentsimbi iyatshisa{2}}iqengqeleke okanye iyabanda{3}}iqengqeleke ibe yitubula engenanto, ethi iye idityaniswe okanye intywiliselwe{4}}i-arc idityaniswe ukuze yenze umbhobho oqhubekayo. Itekhnoloji ye-Anti{6} yokubola yakha phezu kwesi siseko, inika ukuxhathisa okongeziweyo komhlwa kumbhobho wentsimbi ngonyango lomphezulu, ukwambathisa, okanye ukugquma.
II. Inkcazo eneenkcukacha yaManyathelo eNkqubo yokuQinisekisa okuPhambili
1. I-Base Pipe Pretreatment: Ukucoca kunye nokuBunjwa
Ukomelela kwebhondi phakathi kwe-anti{0}}umaleko wokutya kunye nombhobho wentsimbi kuxhomekeke ngokuthe ngqo kucoceko kunye noburhabaxa bomphezulu wombhobho wesiseko. Ukuba i-oyile eshiyekileyo, umhlwa, okanye isikali sihlala siphezu komhlaba, izinto ezichasene{2}}nokonakala aziyi kubambelela ngokufanelekileyo, nto leyo ekhokelela kwiingxaki ezilandelayo ezifana nokuqhushumba nokuxobuka. Ke ngoko, unyango lwangaphambili linyathelo lokuqala elibalulekileyo kwinkqubo yokubumba.
Imisebenzi ethile ibandakanya:
Ukususwa komhlwa ngoomatshini: Ukuqhushumba kweembumbulu okanye izixhobo zokuqhushumba zisebenzisa{0}}isantya sokudubula kwentsimbi okanye isanti yequartz ukuphembelela umphezulu wombhobho wentsimbi, ukususa isikali kunye nokudala umphezulu orhabaxa ofanayo (odla ngokufuna ubunzulu bophawu lweankile oluyi-40-100μm).
Ukucocwa kweekhemikhali: Izinyibilikisi ze-Organic (ezifana ne-acetone) okanye i-asidi{0}}izisombululo zesiseko (ezifana ne-phosphoric acid) zisetyenziselwa ukususa igrisi eshiyekileyo kunye nerusi encinci, ukuqinisekisa ukuba umphezulu awunazingcolisi ezibonakalayo.
Ukomisa: Umoya oshushu okanye ukomiswa kwe-infrared kusetyenziswa ukulawula ukufuma komphezulu wombhobho wentsimbi ukuya kumgangatho ophantsi kakhulu (ukufuma.<5%) to prevent bubbles during subsequent coating.
2. Ukuchasana{1}}nokwenziwa kwe-corrosion: uthelekiso lweenkqubo eziphambili
Ngokusekwe kuhlobo lwe-anti{0}}yesixhobo sokutya kunye nemeko yesicelo, inkqubo yokwenza imibhobho yentsimbi echasene{1}}nokonakala inokwahlulwa ibe ngamacala amathathu amakhulu:
1
I-3PE anti-i-corrosion sisakhiwo esihlanganisiweyo se-"fusion bonded epoxy powder (FBE) umaleko osezantsi + oncamathelayo ophakathi umaleko + umaleko ongaphandle wepolyethylene". Idibanisa i-adhesion ephezulu ye-epoxy powder kunye noxinzelelo lokusingqongileyo oluchasayo lwe-polyethylene, kwaye ifanelekile kwiindawo ezinzima ezifana nemibhobho yeoli engcwatywayo kunye negesi. Inkqubo yokubumba imi ngolu hlobo lulandelayo:
Isiseko sokutyabeka: Ukutshiza ngombane umgubo we-epoxy odityanisiweyo (ubungakanani besuntswana Ngaphantsi okanye bulingana ne-150 μm) ngokulungeleleneyo kumphezulu wombhobho wentsimbi ocoliweyo ngaphambili, uze unyibilike uwuqinise kwiqondo lobushushu obuphezulu obungama-200-230 ukuze wenze umaleko oshinyeneyo we-epoxy nobukhulu obumalunga ne-50-100 μm;
Ukugquma umaleko ophakathi: I-adhesive (efana ne-polyethylene copolymer eguquliweyo) ifudunyezwa kwindawo etyhidiweyo (malunga ne-250 degree) yi-extruder, ize ifakwe ngokulinganayo ngaphandle kwe-epoxy layer ngokusebenzisa i-mold, kunye nobunzima malunga ne-170-250 μm;
I-extrusion yangaphandle: I-Polyethylene ephezulu - yoxinaniso (HDPE) nayo iyanyibilika kwaye igqunywe nge-extruder ukwenza umaleko okhuselayo ongaphandle kunye nobukhulu be-1.8-3.7 mm (ekwazi ukumelana nemitha ye-ultraviolet kunye nomonakalo owenziwe ngoomatshini).
2
Le nkqubo isebenzisa i-epoxy resin kunye ne-coal tar pitch njengeyona mathiriyeli ikrwada, kwaye yenza i-anti{0}}umaleko wokutya kumphezulu wombhobho wentsimbi ngokuxukuxa okanye ukudipha. Iimpawu zayo ziyindleko ephantsi, kodwa ivakalelwa kwiqondo lokushisa kwendawo yokwakha (idinga ukuba ibe ngaphezu kwe-5℃) kunye nomswakama, kwaye isoloko isetyenziselwa ukubonelela ngamanzi kunye nemibhobho yokuhambisa amanzi okanye iiprojekthi zesikhashana.
(3) Ukufakwa kodaka lwesamente - isisombululo esongezelelweyo seemeko ezikhethekileyo
Kwimibhobho yoxinzelelo olusezantsi-ethutha imidiya engadlekiyo ({1}njengamanzi okusela), indlela yokutshiza icentrifugal ingasetyenziswa ukuncamathela udaka lwesamente (amanzi-umlinganiselo wesamente 0.4-0.5) ukuya kudonga lwangaphakathi lombhobho wentsimbi ukwenza umaleko welinen onobunzima{0mm7} 30. Le nkqubo inexabiso eliphantsi kwaye inxibe-resistant, kodwa inokumelana nobuthathaka kwi-corrosion yeekhemikhali.
3. IPost{1}}Ukuqhuba noVavanyo: Ukuqinisekisa uMgangatho woKuqulunqa
Emva kokwenziwa, i-anti{0}}i-corrosion coating iphantsi kolawulo olungqongqo lobulunga:
Uvavanyo lokutyeba: Linganisa ubukhulu bomaleko ngamnye usebenzisa i-gauge yobukhulu bemagnethi okanye ye-ultrasonic (umzekelo, kwi-3PE anti{3}}i-corrosion coating, i-epoxy layer kufuneka ibe Mkhulu okanye ilingane ne-80μm, kwaye umaleko we-polyethylene kufuneka ube Mkhulu okanye ulingane ne-2mm).
Uvavanyo lokuncamathela: Qinisekisa ukomelela kwebhondi phakathi kwe-anti{0}}into yokutyabeka kunye nombhobho wentsimbi usebenzisa umnqamlezo -uqhankqalazo okanye utsale{2}}indlela yokuphuma (efuna iGreater than okanye ilingana ne-5MPa).
Ukufunyanwa kweNtlantsi yoMbane: Skena umphezulu we-anti-yetyatyekwe umhlwa kunye -ifrikhwensi ephezulu, ephezulu{2}}yevoltage probe ukubona imingxunya okanye umonakalo (indawo yokuvuza kwamandla ombane amakhulu okanye alingana ne-25kV).
Ukuhlolwa kwenkangeleko: Qinisekisa ukungabikho kweziphene ezifana namaqamza, iintanda, kunye neesags, ukuqinisekisa ukugudiswa kunye nomphezulu.
III. Inkqubo yoTshintsho kunye neendlela ezizayo
Ngokunyuka kwemfuno yemizi-mveliso, inkqubo yokwenza umhlwa{0}}yemibhobho yentsimbi enganyangekiyo iguqukela ekusebenzeni okuphezulu, ubuchwephesha obukrelekrele, kunye nokusebenzelana kwendalo:
Ukukhuthazwa kokwenziwa kwangaphambili: Imigca yemveliso eqhubekayo idibanisa "ukuqengqeleka kwemibhobho yentsimbi, ukulungiswa kwangaphambili, kunye-nokwaleka kokutya," ukwenza mfutshane imijikelo yemveliso kunye nokuphucula ukungaguquguquki;
Uphuhliso lwezixhobo ezitsha zokuchasana{0}}nemhlwa: Usetyenziso olufana ne-nano{1}}i-epoxy powder ehlaziyiweyo kunye negraphene{2}}i-polyethylene ephuculweyo yandisa ngakumbi ubomi bomhlwa (ukuya kuma-50 eminyaka okanye ngaphezulu);
Uphononongo lweenkqubo eziluhlaza: Ukunciphisa ukusetyenziswa kwezinyibilikisi zendalo (umzekelo, ukutshintshwa kwento yokunyibilikisa yemveli{2}}esekwe ngokutyabeka ngamanzi{3}iepoxy ezityabekayo) kunciphisa ukukhutshwa kweVOC.
Ukuqukumbela
Inkqubo yokwenza umhlwa{0}}kwimibhobho yentsimbi enganyangekiyo luvuthondaba lokuhlangana kwenzululwazi yemathiriyeli, ukuveliswa koomatshini, kunye nobunjineli bemichiza. Ukusuka kwisiseko sombhobho wangaphambili ukuya kusetyenziso oluchanekileyo lwe-anti{2}}yokutyakala, inyathelo ngalinye lifuna ulawulo olungqongqo lweeparamitha kunye neenkcukacha. Ngenkqubela phambili yetekhnoloji, umhlwa wexesha elizayo-imibhobho yentsimbi exhathisayo ayizukwanelisa kuphela imfuno esisiseko yokuxhathisa umhlwa kodwa ikwaphumeza impumelelo kuhlolo olukrelekrele (olufana nolwakhelwe{5}}kwizinzwa zomhlwa) kunye noyilo olukhaphukhaphu, lubonelela ngenkxaso ethembeke ngakumbi kulwakhiwo lweziseko ezingundoqo zehlabathi.
