Steel isakhiwo ukutyabeka umlilo yahlulwe ukuba zeziphi iindidi

1. Indlela yokwakha yokugquma umlilo

A. Indlela yokukhuhla B. Indlela yokugquma ngerola C. Indlela yokubrasha D. Indlela yokutshiza ngecompressor yomoya E. Indlela yokutshiza engenamoya

I-1, indlela yokuqala yokwakha yeyona ndlela ixhaphakileyo yokukhuhla: isetyenziswa rhoqo njenge-fiberglass scraper, i-horn scraper, i-plastiki scraper, i-rubber sheet eqinile kunye nezinye izixhobo zentsimbi okanye ezingezizo ezentsimbi, ziya kuba ngumphezulu wezinto ezahlukeneyo. Udaka oluludaka olungqindilili olugqumayo olukhusela umlilo okanye iintanda kunye nenye indawo engaphezulu yokukhuhla.

I-2, indlela yokwakhiwa kwesibini yindlela yokugqoka i-roller: indlela yokugqoka i-roller isetyenziswa ngokubanzi kulwakhiwo lwendonga, kwi-roller ebusweni bepeyinti yokunamathisela, kwaye emva koko ijikeleza ngasemva nangaphezulu eludongeni.

I-3, indlela yesithathu yokwakha yindlela yokugubungela i-brush: indlela yokugqoka i-brush ayisebenzi kuphela ekwakhiweni kodonga, nayiphi na enye imilo yobuso bento inokusebenza, ubuninzi beengubo zokukhusela umlilo zingakhiwa ngale ndlela.

I-4, indlela yesine yokwakha yindlela yokutshiza i-compressor yomoya: ukusetyenziswa kwe-air compressor pressurisation kunye nesibhamu sokutshiza kuya kutshizwa kumphezulu wento emva kwe-atomisation yepeyinti, umgangatho wokugquma emva kokutshiza ufanayo, ukusebenza kakuhle kwemveliso. iphezulu kakhulu. I-5, indlela yesine yokwakha kukutshiza okungenamoya: ukusetyenziswa kweempompo ze-plunger, iimpompo ze-diaphragm kunye nezinye iimpompo ezixinzelelekileyo ziya kunyanzeliswa ngepeyinti yolwelo, kwaye emva koko ngombhobho woxinzelelo oluphezulu ukuya kumpu wokutshiza ongenamoya, kwaye ekugqibeleni ungene. i-nozzle engenamoya yokukhulula uxinzelelo lwe-hydraulic, i-atomisation esheshayo, kwaye emva koko i-coating yokukhusela umlilo ingasetyenziswa ngale ndlela. Uxinzelelo lweHydraulic, i-atomisation ekhawulezileyo itshizwe kumphezulu wento egqunyiweyo ukwenza umaleko wokugquma.

Isakhiwo sensimbi sisakhiwo esenziwe ngezinto zetsimbi kwaye yenye yeentlobo eziphambili zezakhiwo zokwakha. Ulwakhiwo ubukhulu becala luqulunqwe ngemiqadi, iintsika zentsimbi, iitrasi zentsimbi kunye nezinye izinto ezenziwe ngeeprofayili zentsimbi kunye neepleyiti zentsimbi, njl. njl., kwaye yamkela ukususwa komhlwa kunye neenkqubo zokulwa ne-antirust ezifana ne-silanization, i-phosphating ecocekileyo ye-manganese, ukuhlamba kunye nokomisa, kunye ne-galvanisation. I-Welds, i-bolts okanye i-rivets idla ngokusetyenziselwa ukudibanisa amacandelo okanye iinxalenye. Ngenxa yobunzima bayo obulula kunye nolwakhiwo olulula, isetyenziswa ngokubanzi kwimizi-mveliso emikhulu, amabala emidlalo, iindawo eziphakamileyo eziphakamileyo kunye namanye amasimi.

(1) Inokwahlulwa ibe yi-solvent-based based metal i-coating ye-fireproof kunye ne-water-based steel structure i-fireproof coating ngokohlobo lwe-binder. Isakhiwo sensimbi esekwe kwi-solvent-based based covering caating inokwahlulwa ibe yi-solvent-based steel structure igalelwe umlilo kunye nomxholo we-benzene ophantsi kunye ne-solvent-based based metal structureproof covering kunye nomxholo ophezulu we-benzene.

(2) Ngokwendawo yokusetyenziswa, inokwahlulwa ibe: yangaphakathi (N) isakhiwo sentsimbi yokugquma umlilo: isetyenziswe phezu kwesakhiwo sentsimbi yeeprojekthi zangaphakathi okanye ezifihliweyo zezakhiwo; yangaphandle (W) isakhiwo sentsimbi yokugquma umlilo: isetyenziswe phezu kwesakhiwo sentsimbi yeeprojekthi zangaphandle okanye ezivulekileyo zezakhiwo.

(3) Ngokutsho kobunzima bokusetyenziswa, inokwahlulwa ibe yi: ultra-thin type (CB) isakhiwo sentsimbi yokugquma umlilo: ubukhulu bengubo ≤3mm; uhlobo olubhityileyo (B) isakhiwo sentsimbi yokugquma umlilo: ukugquma ubukhulu be-3mm-7mm; uhlobo olungqindilili (H) isakhiwo intsimbi ukutyabeka umlilo: umaleko ubukhulu 8-50mm.

Ulwazi olwandisiweyo

Ngophuhliso lwesikali sasezidolophini zaseTshayina, ukusetyenziswa kwesakhiwo sentsimbi kwishishini lokwakha laseTshayina sinethemba elibanzi kakhulu. Nangona kunjalo, ekubeni isakhiwo sensimbi ngokwaso singenakutsha, umba wokukhusela umlilo kunye nokukhusela ukushisa kwesakhiwo sensimbi kwakungahoywa. Ngokweengxelo zedatha zasekhaya kunye nezamazwe ngamazwe kunye neemvavanyo kunye nezibalo ezivela kwimibutho echaphazelekayo, ukuchasana nomlilo kwezakhiwo zetsimbi kubi kakhulu kunokwakheka kweemasonry kunye nezakhiwo zekhonkrithi ezomeleziweyo.

Amandla omatshini wentsimbi ayancipha ngokunyuka kwamaqondo obushushu, kwaye amandla ayo ayancipha ukuya kuma-40% -50% malunga ne-500 ℃, kunye neempawu zomatshini zentsimbi, njengendawo yokuvelisa, amandla oxinzelelo, imodyuli ye-elasticity, kunye nomthamo womthwalo, njl., iyancipha ngokukhawuleza, kwaye ngokukhawuleza ilahlekelwe amandla okuxhasa isakhiwo, okukhokelela ekuweni kwesakhiwo. Ngoko ke, kunyanzelekile ukukhusela isakhiwo sentsimbi.

Isakhiwo sentsimbi yokugquma i-fireproof coating is brushed or sprayed on the surface of steel structure, edlala indima yokukhusela umlilo kunye nokushisa ubushushu, ikhusela intsimbi ukuba ifudumale ngokukhawuleza kwaye iyancipha amandla ayo emlilweni, kwaye inqanda isakhiwo sentsimbi ekulahlekelweni amandla ayo okuxhasayo kunye nokunciphisa ukufudumala kwentsimbi. okukhokelela ekudilikeni kwesakhiwo.

Kwangoko kwiminyaka yee-1970, uphando lwangaphandle kunye nokusetyenziswa kwesakhiwo sentsimbi yokugquma umlilo siqalise umsebenzi osebenzayo kwaye senza iimpumelelo ezilungileyo, kwaye sisesenyukayo.

Kwiminyaka yokuqala ye-80, i-coating yensimbi yangaphandle yomlilo yangena kwimarike yaseTshayina kwaye yasetyenziswa kwiprojekthi. Ukususela ekuqaleni kwe-80, i-China yaqala ukuphuhlisa i-steel structure yokugquma umlilo, ukuza kuthi ga ngoku kukho iintlobo ezininzi ezilungileyo ezisetyenziswa ngokubanzi kumashishini ahlukeneyo.

2.Thin-uhlobo lwentsimbi isakhiwo ukutyabeka umlilo

Isakhiwo sentsimbi esithambileyo esinomlilo sibhekiselele kwisakhiwo sentsimbi yokukhusela umlilo kunye nobukhulu bokugquma okukhulu kune-3mm, ngaphantsi okanye ilingana ne-7mm, kunye nesiphumo esithile sokuhombisa, ukwandiswa kunye nokuqina kwiqondo lokushisa eliphezulu, kunye nomda wokumelana nomlilo ngaphakathi kwe-2h. Olu hlobo lwesakhiwo sentsimbi yokugquma umlilo ngokuqhelekileyo zenziwe ngeepolymers ezisekelwe emanzini ezifanelekileyo njengesiseko sezinto, kwaye emva koko zihambelana nenkqubo edibeneyo yomlilo, izongezo zomlilo, iifibers ezikwazi ukumelana nomlilo, njl. yodidi olubhityileyo kakhulu. Ngolu hlobo lokugquma umlilo, i-polymer ekhethiweyo yamanzi kufuneka ibe nokubambelela kakuhle, ukuqina kunye nokuchasana kwamanzi kwi-substrate yensimbi. Ipropathi yayo yokuhombisa ingcono kuneengubo ezishinyeneyo ezingatshiyo, ingaphantsi kwe-ultra-thin steel structure i-coating, kunye nomda wokumelana nomlilo ngokubanzi ungaphakathi kwe-2h. Ngoko ke, isetyenziswe ngokuqhelekileyo kwiprojekthi yensimbi yokukhusela umlilo kunye nomda wokumelana nomlilo ngaphantsi kwe-2h, kwaye ihlala ithatha ukwakhiwa kokutshiza. Ithatha inxalenye enkulu kwixesha lexesha, kodwa ngokubonakala kwe-ultra-thin steel structure yokugquma umlilo, isabelo sayo semarike sitshintshwa ngokuthe ngcembe.

3.Thick steel isakhiwo ukutyabeka umlilo

Ulwakhiwo lwentsimbi eshinyeneyo, utyabeka olungatshiyo lubhekiselele kwisakhiwo sentsimbi esingangenwa ngumlilo esinobukhulu obungaphezulu kwe-7mm, bungaphantsi okanye bulingana ne-45mm, umphezulu wegranular, ingxinano ephantsi, i-thermal conductivity ephantsi, kunye nomda wokumelana nomlilo ongaphezulu kwe-2h. Njengoko amacandelo eengubo zokugquma ezityebileyo ezingatshiyo ikakhulu zizixhobo ze-inorganic, ukusebenza kwayo kokumelana nomlilo kuzinzile kwaye ukusetyenziswa kwexesha elide kungcono, kodwa amasuntswana amacandelo ayo okugquma makhulu kwaye inkangeleko yokwambathisa ayilingani, echaphazela i-aesthetics iyonke. isakhiwo, ngoko ke sisetyenziswa kakhulu kwiiprojekthi zokufihla izakhiwo. Olu hlobo lokugquma komlilo emlilweni usebenzisa i-granular surface yezinto eziphathekayo, ukuxinana okuncinci, ukuhanjiswa kwe-thermal ephantsi okanye ukufunxa ubushushu bezinto eziphathekayo, ukulibazisa ukunyuka kobushushu bentsimbi ukukhusela intsimbi. Olu hlobo lokugquma komlilo luyi-binder efanelekileyo ye-inorganic (efana neglasi yamanzi, i-silica sol, i-aluminium phosphate, i-samente ye-refractory, njl. amaso, uthuthu lwempukane, njl.njl.), izongezo zomlilo, iikhemikhali kunye nezinto zokuqinisa (ezifana neentsinga ze-aluminium silicate, uboya belitye, iintsinga zeceramic, iintsinga zeglasi, njl. njl.) kunye nezihluzi, njl., ezixutywe kwaye zilungiswe, kunye nexabiso eliphantsi kakhulu iingenelo ngexabiso eliphantsi. Ulwakhiwo luhlala luthatha ukutshiza, olufanelekileyo kwisakhiwo sensimbi efihliweyo yangaphakathi nangaphandle kunye nomda wokumelana nomlilo ngaphezu kwe-2h, i-high-high-high-steel structure kunye ne-multi-storey plant structure. Umzekelo, umda wokumelana nomlilo weentsika zezakhiwo eziphakamileyo zoluntu kunye neentsika ezixhasa imigangatho emininzi kwizakhiwo zoshishino jikelele kunye nezoluntu kufuneka zifikelele kwi-3h, kwaye kufuneka zikhuselwe ngokutyabeka komlilo. ukuya kwisakhiwo sentsimbi, i-coatproof coating kunye nobukhulu be-3mm (kubandakanywa ne-3mm) okanye ngaphantsi, kunye nefuthe elihle lokuhombisa, ukwandisa kunye nogwebu kwiqondo lokushisa eliphezulu, kunye nomda wokumelana nomlilo we-2h okanye ngaphantsi. Olu hlobo lwesakhiwo sentsimbi yokugquma umlilo ngokuqhelekileyo yinkqubo esekelwe kwi-solvent, enegunya eliphezulu lokubambelela, ukumelana nemozulu elungileyo kunye nokuchasana kwamanzi, ukulinganisa okulungileyo, iimpawu ezintle zokuhombisa; xa iphantsi komlilo, ikhula ngokucothayo kwaye ibe namagwebu ukwenza ingqimba eshinyeneyo kwaye ilukhuni yokugquma ubushushu bomlilo, enokumelana nomlilo olomeleleyo kwimpembelelo, icotha ukunyuka kobushushu bentsimbi, kwaye ikhusela amacandelo entsimbi ngokufanelekileyo. Ukwakhiwa kwe-ultra-thin intumescent yesakhiwo sensimbi yokukhusela umlilo ingatshizwa, ixutywe okanye ifakwe i-roller coated, isetyenziswe ngokubanzi kwiimfuno zomda wokumelana nomlilo ngaphakathi kwe-2h kwisakhiwo sensimbi yesakhiwo. Kukho iintlobo ezintsha ze-ultra-thin steel structure coatings ezinomlilo kunye nokusebenza kokumelana nomlilo ukufikelela okanye ukudlula i-2h, esekelwe ngokukodwa kwisakhiwo esikhethekileyo se-polymethacrylate okanye i-epoxy resin kunye ne-amino resin, i-chlorinated wax yeparafini, njl. ngepolymerisation ephezulu ye-polyphosphoric acid ammonium ityuwa, idipentaerythritol, i-melamine njalo-njalo njengendlela yokukhusela umlilo kunye ne-flame-retardant system, ukongeza i-titanium dioxide, i-wollastonite kunye nezinye izinto ze-inorganic refractory kwi-200 # i-oli ye-solvent njenge-solvent composite. Ioli yokunyibilikisa isetyenziswa njengesinyibilikisi. Zonke iintlobo zesakhiwo sentsimbi ekhanyayo, isakhelo somnatha njalo njalo sebenzisa olu hlobo lokugquma umlilo wokukhusela umlilo. Ngenxa yolu hlobo lokutyabeka kolu hlobo lokutyalwa komlilo, ukusetyenziswa kwesakhiwo sentsimbi esityebileyo nesibhityileyo sincitshiswa kakhulu, ngaloo ndlela kuncitshiswa iindleko ezipheleleyo zeprojekthi, kodwa kukwasenza nesakhiwo sentsimbi ukufumana ukhuseleko lomlilo olusebenzayo, kwaye isiphumo somlilo silunge kakhulu.