Iibholiti zegalvanized ezishushu-dip: Abagcini abangabonakaliyo bezixhobo zoshishino

Kwinkqubo yemveliso yanamhlanje, iibholithinjengolona xhulumaniso lusisiseko lomatshini, ukusebenza kwayo kuchaphazela ngokuthe ngqo ukuthembeka kunye nokhuseleko lwenkqubo yezixhobo zonke.Ngelixa iibholiti zentsimbi zekhabhoni zemveli zigrumba ngesantya se-0.03-0.15mm ngonyaka kwiindawo ezifumileyo, iibholiti ezishushu zokuntywila zibonisa ukuqina okugqwesileyo kwiindawo ezirhabaxa ezifana nezixhobo zekhemikhali, iiplatifti ezingaselunxwemeni, kunye neenqaba zothumelo ezineempawu ezikhethekileyo zokukhusela.Le nkqubo yonyango lomphezulu ayigcini nje ukwandisa ubomi benkonzo ye-fasteners, kodwa idlala indima ebalulekileyo kwintsimi yokhuseleko lwamashishini.

1. Ukuphumelela okutsha ekukhuselweni kwesinyithi

Kwinkqubo eshushu yediphu yokuntywila, iinxalenye zentsimbi zintywiliselwa kulwelo lwezinki olunyibilikisiweyo kwi-450 ℃, kunye nezakhiwo ezikhuselayo ezininzi zenziwe nge-iron-zinc alloy reaction.Ubukhulu be-zinc ecocekileyo eyenziwe phezu komhlaba inokufikelela kwi-60-80μm, idlula kakhulu i-5-15μm ye-galvanizing yombane.Le propati ibotshelelwe nge-metallurgically yenza ukuba i-coat ibambelele kwi-4000-6000psi kwaye ayiyi kuwa nokuba ukungqubuzana komhlaba kwenzeka ngexesha lokudibanisa ibholithi.Indlela yokukhusela i-anode yedini ye-zinc iyaqhubeka idlala indima kwi-coating eyonakalisiweyo, idla ngokufanelekileyo i-zinc ngokusebenzisa i-electrochemical corrosion, kwaye ilibazise ngokufanelekileyo inkqubo ye-corrosion ye-matrix metal.

Kwiprojekthi yolwakhiwo lwebhulorho yokuwela ulwandle, iibholiti eziqhelekileyo zibonakala zibomvu kumhlwa kwimo engqongileyo yaseMarine kangangeenyanga ezi-6, ngelixa iibholiti ezishushu ezishushu zihlala zinjalo iminyaka engaphezu kwemi-5 phantsi kweemeko ezifanayo.Esi siphumo sokukhusela sibalulekile kwi-atmosphere ye-sulfure equkethe i-industrial, kunye nokuchasana kwe-zinc eshushu-dipped layer ukuya kwi-H2S, i-SO2 kunye nezinye iigesi eziphazamisayo zingaphezu kwamaxesha e-3 yengubo eqhelekileyo.

Xa kuthelekiswa ne-dacromet coating, i-hot-dip galvanizing ineenzuzo ezicacileyo kwi-mechanical resistance resistance.I-torque shear force eveliswa yi-bolts ngexesha lofakelo ibangela ukuqhekeka kwe-micro-coating kwi-dacromet coating, ngelixa i-hot-dip galvanizing layer ihlala ingaguquki ngenxa yeempawu zayo zokubopha i-metallurgical.Ngaphantsi kweemeko ze-vibration, ubomi obukhuselekileyo be-bolt-dip galvanized bolts bunokufikelela kumaxesha angama-2-3 kunyango lwe-dacromet.

2. Isiqinisekiso esiphindiweyo sokhuseleko lwesakhiwo

Iipropathi zomatshini zeebholithi eziphuculwe ngokufakwa kwegalvanizing ediphu eshushu zibe ngaphaya koko bekulindelwe.Ukubunjwa kwe-zinc-iron alloy layer kwandisa ubunzima bomhlaba ukuya kwi-250-300HV, elilingana namaxesha angama-1.5 ubunzima be-substrate.Kuvavanyo lwe-vibration enqamlezayo ye-M24 ye-specification bolts, unyango olushushu lwe-galvanizing luphucule ukusebenza kwe-anti-loosening malunga ne-30%, ngenxa ye-friction coefficient optimization of the coating.Uluhlu lwe-friction coefficient ye-galvanizing layer yi-0.06-0.10, eyenza ukuba ulawulo lwangaphambili luchaneke kwaye luthembeke.

Umsebenzi ubalasele ngokukodwa kwindawo yobushushu obuphezulu.Xa ubushushu bokusebenza bufikelela kuma-300 ℃, umaleko wediphu otshisayo wediphu uqalisa ukutyhubela ukusasazwa okuqinileyo kwaye ngokuthe ngcembe uguquke ube sisakhiwo esixineneyo sealloy.Iyunithi yecatalytic cracking yeshishini lepetrochemical isetyenziswaiibholiti ezishushu-diphu. Emva kweeyure ezingama-30,000 zokusebenza ngokuqhubekayo kwi-380 ℃, izinga lokugcinwa kwetorque lisengaphezulu kwe-85%, elingaphezulu kakhulu kune-50% yezinga lokugcinwa kweebholiti eziqhelekileyo.

Ukusebenza kwayo phantsi kweemeko zomthwalo ogqithisileyo kuqinisekisa ukuthembeka kwayo.Uvavanyo lokudibanisa ukudinwa kokutshizwa kwetyuwa lwe-10.9 yeebholiti zamandla aphezulu lubonisa ukuba ubomi bokudinwa kwe-hot-dip galvanizing bandiswa ngama-40%.Ukukhuselwa kwe-cathodic ye-zinc layer kuthintela ngokufanelekileyo ukuqaliswa koxinzelelo lwe-corrosion cracks, ebonisa inzuzo ekhethekileyo kwindawo yomthwalo oguqukayo.

3. Uguqulo olusebenzayo lolondolozo lwemizi-mveliso

Uhlalutyo lweendleko zomjikelo wobomi obugcweleyo lubonisa ukuba i-hot-dip galvanizing inyusa iindleko zokuqala nge-15% -20%, kodwa yandisa imijikelo yokulondolozwa ukusuka kwiminyaka emi-2 ukuya kwiminyaka eyi-10.Emva kokuba iibholiti zoqhagamshelo lwetyhubhu yefama yomoya ziguqulelwe ekubeni zifakwe igalvanizing eshushu, iindleko zonyaka zokugcinwa zithotywe ngama-70%, kwaye iindleko zokunyusa ezigcinwe kubomi benkonzo beminyaka engama-20 ibe ngaphezulu kwamaxesha amahlanu otyalo-mali lokuqala.Olu ncedo lweendleko lubaluleke kakhulu kwiziseko zoncedo ezinkulu.

Iinzuzo zokusingqongileyo azinakungahoywa nazo.Izinga lokusetyenziswa kwe-zinc yenkqubo ye-dip galvanizing eshushu ingaphezulu kwe-98%, engaphezulu kakhulu kune-60% ye-dacromet coating.Unyango olungenayo i-Chromium luphepha ukungcoliseka kwentsimbi enzima, kwaye iinkqubo zokubuyisela umphunga we-zinc zigcina ukukhutshwa okungaphantsi kwe-5mg/m³.Ukusetyenziswa kwamandla kuyo yonke inkqubo yi-30% ephantsi kuneyokutshiza kwepowder, ehambelana nomkhwa wokuphuhliswa kokuveliswa kohlaza.

Kwintsimi yamandla amatsha, emva kokuba inkqubo ye-bracket ye-photovoltaic isebenzisa iibholiti ze-galvanized eshushu-dip, akukho mfuneko yokuyitshintsha ngexesha lewaranti ye-25.Idatha yokuthelekisa yeprojekthi ye-photovoltaic ye-offshore ibonisa ukuba izinga lokubola lonyaka lwenkqubo yenkxaso usebenzisa i-fasteners e-hot-dip galvanized kuphela i-0.5%, eyi-50% ethembekileyo kunendlela yonyango yendabuko.

Inkqubela phambili yobugcisa bemizi-mveliso idla ngokubonakaliswa ekuphuhliseni amacandelo asisiseko.Ngokuphumelela kobunjineli bomhlaba wezinto eziphathekayo, inqanaba lokukhusela le-fasteners eqhelekileyo liphakanyiselwe kubude obutsha.Olu lutsha lwetekhnoloji alusombululi kuphela ingxaki yokungaphumeleli kokubola kwemveliiibholiti, kodwa ikwakhuthaza uphuhliso lwezixhobo zoshishino kwixesha elide kunye nolwalathiso olungenakulungiswa.Ngophuculo oluqhubekayo lweemfuno zokuthembeka kwezixhobo zokwenziwa ngobukrelekrele, itekhnoloji ye-galvanizing ye-hot-dip ngokuqinisekileyo iya kubonisa ixabiso layo elingenakuphinda libuyiselwe kwiindawo eziphambili.