Hot-dip galvanized bolts: Vachengetedzi vasingaoneki vezvigadzirwa zvemaindasitiri

Mumazuva ano ekugadzirwa kwemaindasitiri, iyoboltseyakanyanya kukosha mechanicha yekubatanidza, kuita kwayo kunokanganisa zvakananga kuvimbika uye kuchengetedzeka kweiyo yese michina system.Nepo zvechinyakare kabhoni simbi mabhaudhi achiora pamwero we0.03-0.15mm pagore munzvimbo dzine hunyoro, mabhaudhi anopisa anonyudza anoratidza kusimba kwakanyanya munzvimbo dzakaoma semidziyo yemakemikari, mapuratifomu ekumahombekombe, uye shongwe dzekutapurirana dzine hunhu hwadzo hwekudzivirira.Iyi nzira yekurapa yepamusoro haingowedzere hupenyu hwesevhisi yezvitsigiro, asi zvakare inoita basa rakakosha mumunda wekuchengetedza maindasitiri.

1. Kubudirira kutsva mukuchengetedzwa kwesimbi

Mukupisa dip galvanizing process, simbi zvikamu zvinonyudzwa mumvura yakanyungudutswa zinc pa450 ℃, uye akawanda-layer ekudzivirira zvimiro anoumbwa kuburikidza nesimbi-zinc alloy reaction.Ukobvu hweyakachena zinc layer yakaumbwa pamusoro inogona kusvika 60-80μm, ichipfuura kure 5-15μm yemagetsi emagetsi.Iyi metallurgically bonded pfuma inogonesa iyo coating kuve nekunamira kwe4000-6000psi uye haizodonha kunyangwe kana kukwesha kwepasi kuchiitika panguva yekusangana kwebhaudhi.Iyo yekupira anode yekudzivirira nzira ye zinc inoramba ichiita basa mukukanganisika coating, inofarira kushandisa zinc kuburikidza neelectrochemical corrosion, uye zvinonyatso kunonoka kukora kwesimbi yematrix.

Muchirongwa chekuvaka chebhiriji rekuyambuka gungwa, mabhaudhi akajairwa anoonekwa ari pachena ngura mumhepo yeMarine kwemwedzi mitanhatu, nepo mabhaudhi anopisa anonyudza anoramba asina kusimba kweanopfuura makore mashanu pasi pemamiriro akafanana.Iyi mhedzisiro yekudzivirira yakakoshawo mumhepo ine sarufa-ine maindasitiri, uye kuramba kweiyo inopisa-yakanyudzwa zinc layer kune H2S, SO2 uye mamwe magasi anoodza anodarika katatu kune iyo yakajairwa coating.

Kuenzaniswa ne dacromet coating, inopisa-dip galvanizing ine mabhenefiti ari pachena mukugadzirisa kukuvara kwemagetsi.Iyo torque shear simba inogadzirwa nemabhaudhi panguva yekumisikidza inokonzeresa madiki-diki mune dacromet coating, nepo inopisa-dip galvanizing layer inoramba yakasimba nekuda kweiyo metallurgical bonding properties.Pasi pemamiriro ekudengenyeka, hupenyu hwekudzivirira hwekupisa-dip galvanized bolts hunogona kusvika 2-3 nguva iyo yekurapa kwedacromet.

2. Chivimbiso chechipiri chekuchengetedzwa kwemaitiro

Iyo mechanical properties yemabhoti yakavandudzwa nekupisa-dip galvanizing yakapfuura zvinotarisirwa.Kuumbwa kwezinc-iron alloy layer kunowedzera kuoma kwepamusoro kusvika 250-300HV, iyo yakaenzana ne1.5 nguva yekuoma kwe substrate.Muyedzo yakachinjika yeVibration yeM24 yakatarwa mabhaudhi, iyo inopisa galvanizing kurapwa yakavandudza anti-kusunungura mashandiro neanosvika makumi matatu muzana, nekuda kweiyo friction coefficient optimization yejasi.Iko friction coefficient range ye galvanizing layer ndeye 0.06-0.10, izvo zvinoita kuti preload control iwedzere uye yakavimbika.

Kuita kwacho kunonyanya kutaridzika munzvimbo yepamusoro yekupisa.Kana tembiricha yekushanda yasvika 300 ℃, iyo inopisa dip galvanizing layer inotanga kuomarara uye zvishoma nezvishoma inoshanduka kuita denser alloy chimiro.Iyo catalytic cracking unit yepetrochemical bhizinesi inoshandisahot-dip galvanized bolts. Mushure memaawa makumi matatu ezviuru ekuenderera mberi kwekushanda pa380 ℃, mwero wekuchengetedza torque uchiri pamusoro pe85%, iyo yakakwira zvakanyanya kupfuura 50% yekuchengeta mwero wemabhaudhi akajairwa.

Kuita kwayo pasi pemamiriro ekutakura kwakanyanya kunosimbisa kuvimbika kwayo.Iyo munyu yakapfapfaidza kuneta kubatanidza bvunzo ye10.9 yakakwirira simba mabhaudhi inoratidza kuti kuneta hupenyu hwekupisa-dip galvanizing hunowedzerwa ne40%.Iyo cathodic chengetedzo ye zinc layer inonyatso kuvharidzira kutangwa kwekushushikana corrosion kutsemuka, kuratidza yakasarudzika mabhenefiti munzvimbo ine simba remutoro.

3. Kubudirira shanduko yekugadzirwa kwemaindasitiri

Ongororo yemitengo yehupenyu hwakazara inoratidza kuti kupisa-dip galvanizing kunowedzera mitengo yekutanga ne15% -20%, asi inowedzera magadzirirwo kubva pamakore maviri kusvika anopfuura makore gumi.Mushure meshongwe yehubhu yehubhu yepurazi remhepo yakashandurwa kuita inopisa-dip galvanizing, mutengo wepagore wekugadzirisa wakaderedzwa ne70%, uye mari yekusimudza yakachengetedzwa pamusoro pemakore makumi maviri ehupenyu hwesevhisi yakapfuura kashanu mari yekutanga.Iyi mari inobatsira inonyanya kukosha muzvivako zvakakura.

Izvo zvakanakira zvakatipoteredza hazvigone kufuratirwa kana.Kushandiswa kwezinc chiyero chekupisa dip galvanizing process inopfuura 98%, iyo yakakwirira kudarika 60% yedacromet coating.Chromium-isina kurapwa inodzivirira kusvibiswa kwesimbi inorema, uye zinc vapor recovery systems inochengeta kuburitswa kuri pasi pe5mg/m³.Kushandiswa kwesimba kwemaitiro ese kwakaderera ne30% pane iyo yehupfu yekupfapfaidza, iyo inoenderana nekusimudzira maitiro ekugadzira green.

Mumunda wesimba idzva, mushure meiyo photovoltaic bracket system inoshandisa inopisa-dip galvanized bolts, hapana chikonzero chekuvatsiva panguva ye25-year warranty.Iyo data yekuenzanisa yeoffshore photovoltaic purojekiti inoratidza kuti chiyero chegore chekuora kwegadziriro yekutsigira uchishandisa hot-dip galvanized fasteners ingori 0.5%, inova 50% yakavimbika kupfuura nzira yekurapa yechinyakare.

Kufambira mberi kwehunyanzvi hwemaindasitiri kunowanzo kuratidzwa mukuvandudzwa kwezvinhu zvakakosha.Kuburikidza nekubudirira kweinjiniya yepasi, mwero wedziviriro weakajairwa fasteners wakasimudzwa kune hurefu hutsva.Iyi tekinoroji innovation haingogadzirisi chete dambudziko rekutadza kwekuora kwechinyakaremabhaudhi, asi zvakare inosimudzira kuvandudzwa kwezvigadzirwa zvemaindasitiri kune nguva yakareba uye yekutarisira-yemahara kutungamira.Nekuenderera mberi kwekuvandudzwa kwemidziyo inovimbika zvinodiwa zvekugadzira zvine hungwaru, tekinoroji inopisa-dip galvanizing tekinoroji icharatidza kukosha kwayo kusingadzoreki mune dzimwe nzvimbo dzakakosha.