Ngexesha elide -kwiimeko zokusebenza zangaphandle, ngakumbi phantsi kweemeko ezinzima ezifana nokutshizwa kwetyuwa elunxwemeni, ungcoliseko lwemizi-mveliso, imvula eneasidi, ubushushu obuphezulu kunye nokufuma, kunye nemijikelo yokunyibilika kweqondo lobushushu eliphantsi, iipleyiti zedyokhwe eziqhelekileyo zithande ukugqwala, ukubola, ukubhitya, ukuqhekeka, kunye nokuqhekeka, kubeka emngciphekweni ngqo ukhuseleko lombane kunye nokhuseleko lweprojekthi. Ngoko ke, sikhetha iipleyiti zedyokhwe ezikwaziyo ukubola, ezinokuhlala zinomhlwa-zingenamhlwa,{4}}zingaphumeleli{5}}zingaphumi, kwaye zingaphumi{6}{7}}zimahala iminyaka engama-30 ukuya kuma-50 phantsi kwemekobume enomhlwa. Ukunganyangeki komhlwa akubangelwa nje kukugquma, kodwa yinkqubo ebanzi yokuchasana{11}}nomlinganiselo wokutya osekwe kwinzululwazi yemathiriyeli, imigaqo ye-electrochemical, ubuchwephesha bobunjineli bomphezulu, kunye noyilo olulungisiweyo lwesakhiwo. Ukumelana nomhlwa kuvela kwiindlela ezine: ukhuseleko lomqobo, ukhuseleko lwedini lwecathodic, ukhuseleko lokuziphilisa{13}}, kunye nolwakhiwo olululo oluchasene{14}}nokonakala. Iipleyiti zedyokhwe zibekwe kwindawo evulekileyo ixesha elide, zijongana nezinto ezininzi ezonakalisayo, eziquka umhlwa wokutshizwa kwetyuwa, ukubola kwimizi-mveliso, ukuthotywa kokufuma, ukukhwela ibhayisekile kobushushu, imitha yeultraviolet, kunye nokugqabhuka kwesanti nothuli. Ngaphandle kweepleyiti zedyokhwe ezikwaziyo ukubola, ukutshintshwa rhoqo kuya kufuneka ngexesha lokusetyenziswa kwexesha elide, ukonyusa iindleko zokusebenza.
Ubunakho bokwenza ngokwezifiso buhlala bungumgangatho wokulinganisa amandla ewonke omboneleli wepleyiti yedyokhwe ekwaziyo ukubola kunye nento ephambili eqwalaselwa ngabasebenzisi baphesheya xa bekhetha iqabane. Ukususela kumbono wesakhiwo semveliso, iiplati zejoka zibonisa ukuyila okulula, inkqubo yokubumba eguquguqukayo, umjikelezo wemveliso olawulwayo, kunye nokukhethwa okuphezulu, okuvumela ukuveliswa okwenziwe ngokwezifiso ngokusekelwe kwimizobo yomsebenzisi, imigangatho, kunye neemeko zokusebenza.
Imilinganiselo yesakhiwo ngowona mba uqhele ukwenziwa ngokwesiko ngabasebenzisi baphesheya kweelwandle, umisela ngokuthe ngqo ukuba ipleyiti yedyokhwe enganyangekiyo ingafakwa ngokutyibilikayo, nokuba usasazo loxinzelelo lunengqiqo, nokuba iyahambelana neenkqubo ezikhoyo. Ukwenziwa ngokwezifiso kuyenzeka kwimilo, isithuba somngxunya, idiameter yomngxuma, ubukhulu bepleyiti, kunye nemilinganiselo epheleleyo. Ngapha koko, sinokuphucula ulwakhiwo, kubandakanywa uyilo ngaphandle kweekona ezibukhali okanye ii-burrs, kunye neenguqu ezijikelezileyo ngokupheleleyo zokunciphisa uxinzelelo loxinzelelo, ukuphucula ukumelana nokudinwa, kunye nokuthintela ukuqokelelana kwamanzi, ukuqokelelwa kothuli, kunye ne-corrosion crevice.
Iiprojekthi ezahlukeneyo zineemfuno ezahlukeneyo zokomelela koomatshini, ukuqhawuka komthwalo, kunye nokhuseleko lweepleyiti zedyokhwe ezikwaziyo ukubola; ngoko ke, ukwenza ngokwezifiso kwakhona kunokwenzeka, kubandakanywa ukuphulwa komthwalo, into yokhuseleko, kunye nebakala lamandla, ukuhlangabezana neemfuno zeemeko zokusebenza ezahlukeneyo.
Izixhobo zikwangundoqo weplate yedyokhwe. Amandla esivuno, ukomelela, ukomelela, ukuqina kwefuthe eliphantsi{1}}lobushushu, ukuwelda, kunye nokuhambelana nokugalelwa kungenziwa ngokwezifiso. Ewe, ukuba unezinye iimfuno, nceda uzive ukhululekile ukuqhakamshelana nathi kwaye siya kukubonelela ngesisombululo esinye-esinokwenzeka.
Ukumelana nomhlwa kwepleyiti yedyokhwe yedyokhwe ivela kwindlela yokukhusela umhlwa, undoqo wayo kukwahlula i-substrate kwindawo enomhlwa.
Ukukhuselwa kwedini leCathodic
Kwinqanaba lomsebenzi wesinyithi, i-zinc inomsebenzi wemichiza ephezulu kakhulu kunentsimbi. Xa i-anti{1}}i-corrosion layer inemikrwelo emincinane, umonakalo, okanye izithuba, i-substrate yentsimbi iyavela. Ngeli xesha, i-zinc iba yi-anode kwaye i-iron iba yi-cathode. Umphunga wamanzi kunye nesitshizi setyuwa zenza i-electrolyte. I-Zinc ikhethwa ngokufanelekileyo i-corrod, inyibilika, kwaye idliwe, ngelixa i-iron ingenamhlwa ngokupheleleyo, ayivuthi, kwaye ayilahlekanga. Ngamanye amazwi, nokuba umphezulu wepleyiti yedyokhwe enganyangekiyo inemikrwelo emincinci okanye umonakalo wokungqubana, intsimbi yangaphakathi isakhuselwe kwaye ayiyi kuhlwa.
Passivation self{0}}ukhuseleko lokunyanga
Emva kokuba i-zinc layer ifakwe ioksijini kwiatmosfera, iya kukhawuleza yenze ifilimu exineneyo, engaqhubekiyo,{1}}enganyibilikiyo, kunye nozinzo olusisiseko lwezinc carbonate passivation film. Le filimu ye-passivation iya kutywina ngokuzenzekelayo indawo apho i-corrosion iyenzeka khona, ithintele i-oksijini kunye nomswakama ukuba ungaqhubeki nokungena, kwaye umise ukubola ngokuzenzekelayo. Ipleyiti yedyokhwe yentsimbi engenastainless ixhomekeke kwichromium ukwenza ifilimu yechromium oxide passivation. Nje ukuba ikrwelwe, izakusabela kwangoko ngeoksijini ukuze iphinde izihlaziye kwaye iziphilise ngokungenasiphelo, ihlale izinzile nakwimeko ezingqongileyo.
Ukulungiswa kokukhuselwa kokuthotywa kwesakhiwo
Ipleyiti yedyokhwe inomphezulu ogudileyo kwaye ayinazo iikona ezifileyo. Ngexesha lokusetyenziswa, inqanda ukuntywiliselwa ixesha elide emanzini, ukuqokelelwa kothuli kunye nokufunxa ukufuma, i-corrosion, kunye neekona ezibukhali kunye neekona ziqhelene nokugrumba i-corrosion, umonakalo we-coating, kunye noxinzelelo lwe-corrosion. Ngokukodwa xa kuthunyelwa ngaphandle, i-chamfering, i-polish, kunye ne-deburring iqhutyelwa ukuphelisa ukubola kwisakhiwo. Iindawo ezidityanisiweyo kunye nezahlulwe ziphezulu{4}}indawo ezinomngcipheko wokubola. Ngexesha lemveliso, naziphi na izinto ezonakalisayo kufuneka ziphetshwe.
Iifayile ezishisayo: ipleyiti yedyokhwe ekwazi ukumelana nokugqwala, abavelisi beepleyiti zedyokhwe baseTshayina, ababoneleli, umzi-mveliso
