Ubona le combo—i-zinc emnyama, ikhanda le-hex, intambo yephoyinti lokubhoboza—iphonswa nxazonke ngemininingwane ngaso sonke isikhathi. Ukucatshangelwa kwamanje ukuthi inguqulo nje eqinile, ekwazi ukumelana nokugqwala yesixhumi sakho esijwayelekile esifakwe nge-zinc. Kodwa yilapho iphutha lokuqala lenzeka khona. Ukuqina akuyona into eyodwa ongayigxiviza ebhokisini; kungumphumela ongcolile wenqubo yokucwenga, isisekelo sezinto, isenzo sokwenza intambo, futhi ngokungananazi, imvelo oyiphonsa kuyo. Ngibone amaphrojekthi amaningi kakhulu lapho ashiwo ukuthi asetshenziswe ngaphandle futhi ahluleka ngaphambi kwesikhathi ngoba othile uvele wahlola ibhokisi elimelana nokugqwala ngaphandle kokuqonda izendlalelo ezihilelekile.

Ukuqopha I-Zinc Emnyama Qeda

Ake siqale ngokuqeda. I-zinc plating emnyama akuyona nje i-zinc evamile efakwe kudayi omnyama. Ngokuvamile ungqimba lwe-zinc plating olulandelwa uguquko olumnyama lwe-chromate. Lesi sendlalelo se-chromate yisona esinikeza umbala futhi sengeza ukukhushulwa kwe-marginal ukumelana nokugqwala. Igama eliyisihluthulelo liseceleni. Ngokuhlangenwe nakho kwami, lokhu kuqeda okumnyama kunikeza mhlawumbe amahora angama-96 kuye kwangama-120 wokumelana nesifutho sikasawoti ngaphambi kokuba ubone ukugqwala okumhlophe (i-zinc corrosion). Akuyona into esindayo efana nokufaka uthayela okwenziwa ngomshini noma idiphu eshisayo.

Ichromate emnyama inama-porous futhi ingaba brittle. Uma ushayela isikulufu sokuzibhoboza esinalokhu kuqedwa, ukungqubuzana nokushisa okukhiqizwa endaweni yokubhoboza kungasha noma kuqhekeze leso sendlalelo se-chromate khona lapho phezulu kanye nochungechunge oluphambili. Ushiywe nomgoqo osengozini kusukela lapho uya khona. Ngikhumbula iqoqo lezikulufu zokufulela, usayizi we-M8, lapho sasinokugqwala okubomvu okungaguquki okuvela endaweni yokubhoboza ngemuva kwesizini eyodwa nje, kuyilapho ikhanda le-hex lisabukeka lilihle. Isenzo sokumba sigqoke isivikelo kude.

Enye i-nuance ubukhulu be-coating. Isiphetho esihle, esiqinile esimnyama se-zinc esivela kuphrosesa ehloniphekile singase sibe nongqimba lwezinc lwama-microns angu-8-12 kanye nechromate. Kepha ngihlole amasampula avela kubahlinzeki abajwayelekile lapho ukujiya okuphelele bekungaphansi kwama-microns angu-5. Ngaphansi kwe-micrometer, ibukeka kahle, kodwa esimweni sangempela sokugunda noma sokuhuzuka, ihambile ngemizuzwana. Yilapho umthombo obalulekile khona. Umkhiqizi uthanda I-Handan Zitai Fetesser Comment Co, Ltd., esekelwe kuhabhu enkulu yokubopha yase-China e-Yongnian, ngokuvamile inokulawula okuqinile kwenqubo ngenxa yomthamo nengqalasizinda lapho. Ukuhlola imininingwane yenqubo yabo esizeni esifana naso https://www.zitaifasteners.com ingakunikeza isisekelo sokuthi kufanele kube yini ukuphela kwemboni efanele.

IHex Head kanye neDrill Point Dynamic

Ikhanda eliyi-hexagonal limayelana nokudluliswa kwe-torque nokuzinza kwedrayivu. Azikho izimanga lapho. Kodwa yibhanqe nephoyinti lokubhoboza, futhi wethula okuguquguqukayo okukhulu kokuqina. Intambo lapha ngokuvamile iyifomu elihlukanisiwe, elinolaka eliklanyelwe ukusika insimbi. Ukuqina kwe intambo ye-drill ngokwayo incane mayelana ne-coating nokuningi mayelana nensimbi engaphansi kanye nokwelashwa kokushisa.

Iphuzu elivamile lokuhluleka wukushintsha ukusuka kumtshingo wokubhoboza ukuya kumcu wokuqala. Uma ukwelashwa kokushisa kuvaliwe, leyo ndawo ingaba nzima kakhulu futhi ibe brittle, okubangele ukuthi ithiphu ibambezeleke ngaphansi kwengcindezi ephezulu, ikakhulukazi kuma-substrates aqinile njengama-purlins ensimbi. Ngike ngaba namabhokisi lapho u-5% wezikulufi ebezonqamuka khona ngesikhathi sokufakwa. Umsuka ulandelela emuva ekushiseni okungafanele ngemva kokuqina, okushiya insimbi inobulukhuni obuphezulu kodwa ingekho ukuqina. I-zinc plating emnyama ayenzi lutho ukuvimbela lokhu; kuyinkinga yesayensi yezinto ezibonakalayo.

Ngaphezu kwalokho, umsebenzi wokumba ukhiqiza i-swarf-shavings yensimbi. Lawa ma-shavings ashisayo, acijile angashutheka kusokhethi le-hex drive noma inyongo ngokumelene nemicu esanda kucwecwa, kukhulwe ukunamathela. I-fastener eklanywe kahle ingase ibe ne-wax yokugcoba phezu kwe-plating (umkhuba ovamile) ukuze kuncishiswe ukungqubuzana nokuvikela ukunamathela ngesikhathi sokufakwa. Uma isikulufu sizwa somile siphuma ebhokisini, i-plating izothatha isivinini ngesikhathi sokushayela.

I-Real-World Corrosion: Ayifani

Ukuqina kokucaciswa inombolo yelebhu. Ukuqina esizeni kuwumsebenzi wokuchibiyela. Ngisebenzise inqwaba yezikulufu ezimnyama ze-zinc-plated hex head drill ukunamathisela izinhlangothi zensimbi kuhlaka lwempahla endaweni egudle ugu. Isilinganiso sesifutho sikasawoti sasingamahora ayi-100. Eqinisweni, ngemva kwezinyanga ezingu-18, saba nebalazwe elicacile lokwehluleka. Izikulufu ohlangothini olubheke umoya, oluchaphazwe yimvula zibonise ukugqwala okumhlophe okuphawulekayo kanye nokugqwala okubomvu emicu. Izikulufu ngaphansi kwe-overhang, ikakhulukazi ezomile, zibukeka zintsha. I I-zinc-plated emnyama ukuqeda kwakungaphumelelanga ngokufanayo.

Isifundo sasiwukuthi ukuvikelwa kwechromate kunqotshwa kalula umswakama nosawoti oqhubekayo. Kuyi-coat yomhlatshelo, ngakho-ke izokwehlisa. Esimweni esinjalo, ukucacisa ukuphela kwe-zinc emnyama ngaphandle kwecebo eliqinile lokulungisa ukulungiswa kwesikhashana. Sigcine ngokushintshela kuthayela osindayo onesivali esigabeni esilandelayo, samukele ukunqwabelana kwezindleko zokuphila isikhathi eside.

Esinye isimo ukuchayeka kwamakhemikhali. Hhayi ngisho izimboni, nje evamile. Ngibone iphrojekthi ye-pergola lapho iklayenti lisebenzisa izikulufo ezimnyama ze-zinc ukuze linamathisele amabhodi omsedari. Ama-tannins nama-asidi emvelo avela kumsedari, ikakhulukazi lapho emanzi, asheshisa ukugqwala ngesivinini esishaqisayo. Isiphetho esimnyama sangcolisa izinkuni ngokugqwala. Ukukhetha kobuhle kwaba ukwehluleka kokusebenza. I-plating ayizange yakhelwe lolo hlobo lokusebenzisana kwamakhemikhali.

Ikhadi Lendle Lokukhiqiza Nokuthola Imali

Lena ingxenye ongayiboni eshidini elicacisiwe. Ukuqina kwe-fastener yokugcina kukhiyelwe phansi efekthri. Kuseqophelweni lenduku yocingo, ukunemba kokugoqa kwentambo kuyafa, izinga lokushisa kanye namakhemikhali okugeza okucwebezelayo, kanye nokuvumelana kokupholisa ihhavini. Umkhiqizi omkhulu osendaweni egxilile yokukhiqiza, njenge-Handan Zitai esifundeni sase-Yongnian, uvame ukuba nethuba. Njengoba zisenhliziyweni yesisekelo sengxenye evamile yaseShayina, eseduze nemizila emikhulu yezokuthutha, zihlanganiswe ochungechungeni lokunikezela oludinga umthamo kanye nekhwalithi engaguquki, uma kungenjalo njalo izinga eliphezulu. Yabo Iwebhusayithi kungenzeka ingamemezeli i-premium, kodwa ezinhlelweni eziningi zentengiso, umkhiqizo wabo umele okujwayelekile, okujwayelekile kwebanga lezimboni.

Ngi-ode izikulufu zokumba i-zinc hex ezimnyama ezifanayo kubahlinzeki ababili abahlukene. Iqoqo elilodwa lalibushelelezi, ngisho nelimnyama; enye yayibhatshile inombala onsomi. Ukuhlolwa kwesifutho sikasawoti kubonise umehluko wamahora angu-40 ekubonakaleni kokugqwala okumhlophe. Iqoqo eligqagqene libe nongqimba lwechromate olungahambisani, okungenzeka lusuka ekunyakazeni okungalungile kokugeza noma ukungcoliswa. Isimilo? Ilebula ye-zinc emnyama ayisona isiqinisekiso. Udinga ukufaneleka umphakeli wakho, mhlawumbe uze uhlole ulayini wabo wokucwenga uma iphrojekthi ibalulekile.

Ukucindezela kwezindleko kuhlala kulinga abakhiqizi ukuba banciphise amakhona—i-zinc encane, usawoti we-chromate oshibhile, ukweqa izinyathelo zokugeza eziholela kuma-asidi ayinsalela ahlasela uqweqwe lwangaphakathi. Uphawu olutshelayo luyinsalela emnyama ephuma kumagilavu ​​akho. Lokho ukunamathela okungalungile kanye nokugqoka okuzophuma ngaphansi kwengcindezi.

Ngakho-ke, Sithini Isinqumo Sokuqina?

Kunombandela. Okwendawo yasendlini, eyomile, noma emanzi ngezikhathi ezithile, ikhiqizwe kahle intambo ye-hexagonal emnyama ye-zinc-plated i-fastener ihlala isikhathi eside ngokwanele. Inikeza ukumelana nokugqwala okuhle nokubukeka okuhlanzekile, okucwebezelayo. Ikhanda le-hex linikeza amandla amahle we-torque, futhi iphuzu lokubhoboza linikeza ukufakwa kwesinyathelo esisodwa. Kuyisiqiniseko esiqinile, senhloso ejwayelekile yokuhweba/yezimboni.

Ezimweni ezinzima—umswakama oqhubekayo, usawoti, ukuchayeka kumakhemikhali, noma ukuhuzuka okukhulu—ukuqina kwayo kulinganiselwe. I-coating incane kakhulu futhi isengozini kakhulu ekulimaleni komshini phakathi nokufakwa nokuhlaselwa kwemvelo kamuva. Kulezi zimo, uthenga umjikelezo wokulungisa noma wamukela impilo yesevisi emfushane.

Isinqumo sokugcina sesahlulelo sehlela kulokhu: ingabe uyisebenzisela ukubukeka kwayo nokusebenza okusesilinganisweni, noma uthembele kuso ukuze uthole ubuqotho besakhiwo obubucayi, besikhathi eside? Uma kungeyakamuva, i-zinc emnyama kuntambo yokubhoboza kufanele ikunikeze ikhefu. Kungase kudingeke ukuthi ukhuphukele kusikulufu esifakwe uthayela se-hot-dip nge-drill bit ehlukile, noma ucabangele insimbi engagqwali, naphezu kwezindleko. Intambo ye-hex drill iyihhashi elikahle, kodwa ijazi elimnyama le-zinc liyiyunifomu yalo yokugqoka, hhayi izikhali zayo zempi. Icacise ngamehlo acacile emikhawulweni yayo, futhi njalo, hlola isampula yenqwaba kuhlelo lokusebenza lwangempela ngaphambi kokuzibophezela kuzingcezu eziyi-10,000.