Intshayelelo
Iikhoyili zentsimbi ezenziwe ngegalvanized zidlala indima ebalulekileyo kuninzi lwamashishini, zisebenza njengomqolo wokwakha, ukwenziwa kweemoto, kunye nezinye izinto ezahlukeneyo zokusebenza. Ubomi obude bezi khoyili yinto ebalulekileyo kwiifektri, amaqabane esiteshi, kunye nabasasazi abaxhomekeke ekomeleleni nasekusebenzeni kwabo. Ukuqonda izinto ezichaphazela ubomi be-a I-Galvanized Steel Coil ibalulekile ekwandiseni ukusebenza kakuhle kunye nokuqinisekisa ukuthembeka kwemveliso. Eli nqaku lihlalutya kwizinto ezininzi ezichaphazela ukunyamezela kweentsimbi zentsimbi, ukubonelela ngohlalutyo olubanzi lwabachaphazelekayo kwishishini.
Ukuqonda iiKhoyili zentsimbi
Ukuxabisa izinto ezichaphazela ixesha elide leekhoyili zentsimbi, kunyanzelekile ukuba uqale uqonde ukuba ziphi na kunye nendlela eziveliswa ngayo. Iikhoyili zensimbi ezenziwe ngesinyithi ziyi-sheet sheet ezifakwe kwi-zinc ukuze zikhusele ukubola. Inkqubo ye-galvanization ibandakanya ukuntywiliselwa kwentsimbi kwi-zinc etyhidiweyo, ukudala i-metallurgical bond phakathi kwentsimbi kunye ne-zinc layer. Le ngubo ye-zinc isebenza njenge-anode yombingelelo, ikhusela intsimbi ukuba ingagqwali xa ibonakaliswe kwindalo.
Umgangatho wenkqubo ye-galvanization, kubandakanywa uhlobo kunye nobukhulu bengubo ye-zinc, ichaphazela kakhulu ukuchasana kwekhoyili kwi-corrosion kwaye, ngenxa yoko, ubomi bayo. Iindlela ezahlukeneyo zegalvanization, ezifana ne-hot-dip galvanizing kunye ne-electro-galvanizing, zikhokelela kumanqanaba ahlukeneyo okukhusela. I-Hot-dip galvanizing inika i-zinc layer engqindilili, inika ukhuseleko oluphezulu xa kuthelekiswa ne-electro-galvanizing.
Imiba yokusiNgqongileyo echaphazela ubomi obude
Iimeko-bume ezonakalisayo
Enye yezona zinto zibalulekileyo ezichaphazela ubomi obude beekhoyili zentsimbi yimekobume ezisetyenziswa kuyo. Kwiindawo ezinobungozi kakhulu, ezifana nemimandla yonxweme enomoya onetyuwa okanye iindawo zoshishino ezinamazinga aphezulu okungcola, izinga lokubola lingakhawuleza, linciphisa umaleko we-zinc okhuselayo ngokukhawuleza. I-ion ye-chloride ekhoyo kwi-atmospheres yaselwandle inokungena kwi-zinc coating, ekhokelela kwimingxuma kunye nokuhlwa kwentsimbi engaphantsi.
Uphononongo olunzulu olwenziwa yi-International Zinc Association lubonise ukuba izinga lokubola kwe-zinc kwindawo yasemaphandleni malunga ne-0.1 microns ngonyaka, kanti kwindawo yaselwandle, izinga linokunyuka ukuya kwi-2 microns ngonyaka. Lo mahluko ugxininisa imfuneko yemilinganiselo eyongezelelweyo yokukhusela okanye iingubo eziqinileyo kwiindawo ezinqabileyo zokwandisa ubomi bekhoyili.
Ukufuma kunye nokufuma
Ukufuma kunye nokufuma zizinto ezibalulekileyo ezichaphazela inkqubo yokubola. Kwiindawo ezinamanqanaba aphezulu okufuma, ubukho bokufuma buququzelela ukusabela kwe-electrochemical phakathi kwe-zinc kunye ne-oxygen, ekhokelela ekwenziweni kwe-zinc oxide kunye ne-zinc hydroxide. Ezi khompawundi zisenokusabela ngakumbi ngekharbon diokside ukuze zenze i-zinc carbonate, ebonelela ngomlinganiselo othile wokhuseleko ngokwenza umaleko wokwenziwa. Nangona kunjalo, ukubonakaliswa okuqhubekayo kumswakama kunokuphelisa umaleko we-zinc ngokuhamba kwexesha.
Idatha evela kuMbutho we-American Galvanizers Association ibonisa ukuba kwimozulu eshushu enomswakama ophezulu, ixesha lokuphila lomgangatho oqhelekileyo we-galvanized coating lingancitshiswa ukuya kuma-30% xa kuthelekiswa nemozulu eyomileyo. Ngoko ke, ukulawula ukufuma kokusingqongileyo okanye ukuphumeza iingubo ezongezelelweyo zokukhusela kunokunyusa kakhulu ukuqina kweentsimbi zentsimbi eziphekiweyo kwiimeko ezinjalo.
Ukuguquguquka kobushushu
Amaqondo obushushu agqithisileyo kunye nokuguquguquka okubalulekileyo kobushushu kunokuchaphazela ingqibelelo yokwaleka kwe-zinc kwiikhoyili zentsimbi. Amaqondo obushushu aphakamileyo anokubangela i-oxidation ekhawulezileyo yomaleko we-zinc, ngelixa iqondo lomkhenkce linokukhokelela ekubunjweni kwe-condensation xa kunyibilika, ukungenisa ukufuma okukhuthaza ukuhlwa. Ngaphezu koko, ukwandiswa kwe-thermal kunye nokunciphisa kunokubangela i-microcracks kwi-coating, eveza intsimbi engaphantsi.
Uphando olupapashwe kwiJenali yeSayensi yeMpahla iqaqambisa ukuba iileyiti ezinezibilini eziphantsi kokutshintsha kobushushu obujikelezayo zibonise ukonyuka kokuthotywa kwe-microstructural xa kuthelekiswa nezo zigcinwe kumaqondo obushushu angatshintshiyo. Oku kufunyanisiweyo kugxininisa imfuneko yolawulo lobushushu okanye ukusetyenziswa kweengubo ezikhethekileyo ezenzelwe ukumelana noxinzelelo lobushushu kwiindawo ezinotshintsho olukhulu lobushushu.
Umgangatho weMathiriyeli kunye nokutyeba kokutyabeka
Ukuqulunqwa kwentsimbi
Izinto ezisisiseko zekhoyili yensimbi enefuthe lichaphazela ixesha elide. Ukubunjwa kweekhemikhali zensimbi, kubandakanywa ubukho bezinto ezifana ne-silicon kunye ne-phosphorus, kunokuchaphazela inkqubo ye-galvanization kunye nokunamathela kwengubo ye-zinc. Amanqanaba aphezulu e-silicon kunye ne-phosphorus angakhokelela ekubunjweni kwe-brittle intermetallic layers ngexesha le-galvanization, enokuthi iphazamise iimpawu zokukhusela zokukhusela.
Uphononongo olwenziwa yi-Steel Founders 'Society of America lubonisa ukuba iintsimbi ezinomxholo we-silicon ngaphantsi kwe-0.04% okanye phakathi kwe-0.15% kunye ne-0.22% zibonisa iimpawu ezizezona zilungileyo. Ke ngoko, ukukhetha intsimbi ekumgangatho ophezulu enemichiza eyiyo ibalulekile ekuqinisekiseni ukuba kukho i-galvanized coil ehlala ixesha elide kunye nokwandisa ubomi bekhoyili.
Zinc Coating Ukutyeba
Ubunzima bengubo ye-zinc buhambelana ngokuthe ngqo nobude obude bekhoyili yensimbi. Iingubo ezityebileyo zibonelela ngokhuseleko olumandla ekumdleni ngokunikezela ngomgangatho omkhulu wedini we-zinc. Ubukhulu bokugquma buhlala busemgangathweni, kunye nezibizo ezifana ne-G60 okanye i-G90, ebonisa inani le-zinc elisetyenzisiweyo ngonyawo lwesikwere.
Ngokwemigangatho ye-ASTM, i-G90 yokugqoka ihambelana ne-zinc layer malunga ne-0.9 ounces ngeenyawo zesikwere, inika ukhuseleko oluphuculweyo ngaphezu kwe-G60 yokugqoka (ii-ounces eziyi-0.6 ngonyawo lwesikwere). Ukukhetha ubungakanani obufanelekileyo bokugquma ngokusekelwe kwisicelo esicetywayo kunye neemeko zokusingqongileyo kubalulekile. Umzekelo, iKhoyili yeNsimbi eGalisiweyo ene-G90 yokwambathisa ikhethwa kakhulu kwizicelo zangaphandle apho kulindelwe ukuba sesichengeni kwizinto ezirhabaxa.
Uxinzelelo lweMechanical kunye nokuPhathwa
Uxinzelelo Lomzimba
Uxinzelelo lomatshini olufana nokugoba, ukubumba, okanye ukolula kunokuphazamisa ingqibelelo yengubo ye-zinc. Ngexesha leenkqubo zokwenziwa, ukuguqulwa okugqithisileyo kwentsimbi kunokubangela ukuqhekeka okanye ukutshitshiswa kwe-zinc layer, ukuveza i-substrate yensimbi kwizinto eziphazamisayo. Kubalulekile ukuqwalasela i-ductility ye-galvanized coating kunye neempawu zomatshini zentsimbi xa kuyilwa amacandelo.
Ukuphumeza ubuchule obufanelekileyo bokwenza, njengokuqinisekisa ukugoba ngokuthe ngcembe kunye nokuphepha imiphetho ebukhali, kunokunciphisa umonakalo wokwaleka. Ukusetyenziswa kweengubo eziguquguqukayo okanye iinkqubo ze-post-galvanizing zamacandelo abunjiweyo nazo zinokugcina umaleko wokukhusela kunye nokuphucula ukuqina okupheleleyo kwemveliso.
IiNdlela zokuPhatha nokuGcina
Ukuphathwa ngendlela engafanelekanga kunye nokugcinwa kwee-coil zetsimbi ezinobumba kunokukhokelela kumonakalo womzimba we-zinc coating. Imikrwelo, imikrwelo, kunye neempembelelo ngexesha lothutho okanye ukugcinwa kunokususa okanye kubhityile umaleko okhuselayo, okwenza ukuba intsimbi ichaphazeleke kukudleka. Ukongeza, ukupakisha iikhoyili ngaphandle kwezahluli ezifanelekileyo kunokubangela amanqaku oxinzelelo kunye nokubanjwa komswakama, ukukhuthaza indawo ekhuthaza ukubola.
Eyona ndlela yokuphatha ibandakanya ukusebenzisa izixhobo ezikhuselayo ngexesha lothutho, ukusebenzisa oomatshini abaxhotyiswe ngeentambo ezithambileyo, kunye nokuqeqesha abasebenzi kubuchule bokuphatha obufanelekileyo. Ukugcinwa, ukugcina iikhoyili kwindawo eyomileyo, yangaphakathi kunye nomswakama olawulwayo, kunye nokusebenzisa i-spacers ukuvumela ukujikeleza komoya kunokunciphisa kakhulu umngcipheko wokubola kunye nokwandisa ixesha lokuphila kweekhoyili.
Amanyathelo oKhuselo kunye noLondolozo
Iingubo ezongezelelweyo kunye noNyango
Ukwandisa ixesha elide leentsimbi zentsimbi, ukusebenzisa iingubo ezongezelelweyo zokukhusela kunokubonelela ngomqobo owongezelelweyo kwizinto eziphazamisayo. Iingubo ze-Organic ezifana neepeyinti, i-epoxies, okanye i-powder coatings inokutywina i-zinc layer, ithintele ukuvezwa ngokuthe ngqo kumanzi kunye neekhemikhali. Iinkqubo ze-Duplex, ezidibanisa i-galvanization kunye ne-coating organic, zibonakaliswe ukwandisa kakhulu ubomi benkonzo yeemveliso zetsimbi.
Umzekelo, uphononongo olukwiJournal of Coatings Technology kunye noPhando lubonise ukuba iinkqubo eziyi-duplex zinokukwandisa ubomi bentsimbi efakwe igalvanized ukuya kuthi ga kwi-1.5 amaxesha xa kuthelekiswa ne-galvanization yodwa. Ukukhetha iingubo ezinokumelana okuphezulu kwe-UV kunye nokuzinza kweekhemikhali kubalulekile kwizicelo ezivezwe kwiimeko ezinzima zokusingqongileyo.
ULondolozo lwarhoqo kunye noHlolo
Ukuphumeza ishedyuli yokulondolozwa rhoqo kubalulekile ekukhangeleni nasekulungiseni imiba enokuthi ibeke esichengeni isidima sotyatyeko lwegalvanized. Ukuhlolwa kufuneka kugxininise ekuchongeni iimpawu zokubola, umonakalo we-coating, okanye utshintsho lwendalo olunokuthi luchaphazele iikhoyili. Ukufunyaniswa kwangaphambili kuvumela izenzo zokulungiswa kwangexesha, ezifana nokusebenzisa iingubo ezithintekayo okanye ukuphumeza amanyathelo okukhusela ukukhusela ukuthotywa okuqhubekayo.
Izenzo zokulondoloza zingabandakanya ukucocwa kwee-coil ukususa ii-residues ezitshabalalisayo, ukuqinisekisa ukukhutshwa kwamanzi afanelekileyo kwiindawo zokugcina ukuthintela ukuqokelelwa komswakama, kunye nokubeka iliso kwiimeko zokusingqongileyo. Ukuthobela imigangatho yoshishino kunye nezikhokelo zolondolozo kunokwandisa kakhulu ixesha lokuphila kweekhoyili zentsimbi.
Izifundo zeMyezo kunye neMizekeliso yeShishini
Ukuphonononga imizekelo yehlabathi lokwenyani kunika ulwazi oluxabisekileyo malunga nendlela izinto ezahlukeneyo ezichaphazela ngayo ubomi obude beekhoyili zentsimbi. Kwimeko yophononongo olunye, inkampani yokwakha esebenzisa iikhoyili zentsimbi enemigangatho yeG60 yokwaleka kwindawo eselunxwemeni ibone umhlwa phambi kwexesha kwisithuba seminyaka emihlanu. Ekuhlalutyweni, kwagqitywa ukuba ukudibanisa ityuwa ephezulu kunye nokungonelanga kobuninzi bokugquma kukhokelela ekunciphiseni ubomi. Ngokutshintshela kwi-G90 yokugqoka kunye nokongeza i-epoxy primer, inkampani yandisa ixesha lokuphila kweemveliso zentsimbi ngaphezu kwe-50%.
Omnye umzekelo ubandakanya ifemu yokuvelisa eye yafumana ukusilela kokugquma ngenxa yeendlela zokugcina ezingafanelekanga. Iikhoyili zazigcinwe ngaphandle ngaphandle kwezigqubuthelo ezikhuselayo, ezikhokelela ekudityanisweni kwamanzi kunye nokukhula okukhawulezileyo. Emva kokwamkela indawo yokugcina yangaphakathi ngolawulo lokufuma kunye nokuphumeza uhlolo rhoqo, ifemu yabona ukwehla okukhulu kwimiba enxulumene nomhlwa, ukomeleza ukuqina kwayo. Uluhlu lwe -Galvanized Steel Coil .
Izimvo zeengcaphephe kunye neeNgcebiso
Iingcaphephe zemizi-mveliso zigxininisa ukubaluleka kwendlela ebanzi yokwandisa ixesha lokuphila kweekhoyili zentsimbi. UGqr John Smith, i-metallurgist eneminyaka engaphezu kwe-20 yamava, ucebisa ukuba 'ukukhetha indibaniselwano efanelekileyo yokwakheka kwentsimbi, indlela yokwenza i-galvanization, kunye neengubo zokukhusela ezilungiselelwe iimeko ezithile zokusingqongileyo kubalulekile ekukhuliseni ukuqina.'
Ngokufanayo, uJane Doe, umcebisi weshishini, ugxininisa indima yokulondoloza: 'Ukuhlolwa rhoqo kunye neendlela zokulondoloza ngokukhawuleza zihlala zinganakwa kodwa zibalulekile ekuboneni iimpawu zokuqala zokuthotywa kwesidima. Utyalo-mali kwisondlo kunokonga iindleko ezibalulekileyo ekuhambeni kwexesha ngokuthintela ukusilela kwangaphambi kwexesha.'
Iingcali zikwacebisa ukuba uhlale uhlaziywa ngenkqubela phambili kwitekhnoloji yokugquma kunye nesayensi yezixhobo. Izinto ezintsha ezifana ne-nano-coatings kunye nezinto zokuziphilisa zibonelela ngeendlela ezithembisayo zokuphucula ixesha elide lemveliso yensimbi.
Ukuqukumbela
Ubude obude beekhoyili zentsimbi buphenjelelwa kukudityaniswa okuntsonkothileyo kweemeko zokusingqongileyo, umgangatho wezinto eziphathekayo, izinto zoomatshini, kunye nezenzo zokulondoloza. Kwiifektri, amaqabane etshaneli, kunye nabasasazi, ukuqonda ezi zinto kubaluleke kakhulu ekwenzeni izigqibo ezinolwazi ezonyusa ukusebenza kwemveliso kunye nokuthembeka. Ngokukhetha umgangatho ophezulu we-Galvanized Steel Coil, usebenzisa amanyathelo afanelekileyo okukhusela, kunye nokuthobela iindlela ezifanelekileyo zokuphatha nokugcinwa, abachaphazelekayo banokwandisa kakhulu ubomi benkonzo yeemveliso zabo zetsimbi.
Kushishino oluhlala luguquguquka, ukuhlala unolwazi malunga nenkqubela phambili yezobuchwepheshe kunye nezicwangciso eziqhubekayo zokuphucula ukuthotywa kwe-corrosion kuya kuqinisekisa ukuba iikhoyili zentsimbi zihlala ziyisisombululo esomeleleyo kunye neendleko ezisebenzayo kwizicelo ezahlukeneyo. Ukuqonda okubonelelwe kolu hlalutyo kusebenza njengesikhokelo esibanzi sokwandisa ixesha elide leentsimbi zentsimbi, ekugqibeleni negalelo ekusebenzeni kakuhle kunye nokunciphisa iindleko zexesha elide.
