Ukuqina kwe-gasket ene-electrogalvanized ezindaweni ezinokhahlo? 

Ake sifinyelele ekujaheni: uma ucabanga ukuthi ama-gaskets ajwayelekile afakwe ugesi ayizilungiso zesikhathi eside ezinokwethenjelwa zesifutho sikasawoti, ukuchayeka kwamakhemikhali, noma umswakama ophezulu, cishe uzibekela ukwehluleka kwensimu ebizayo. Umbuzo wangempela awukona mayelana nengubo ngokwayo, kodwa mayelana nezindlela ezithile zokuhluleka ezinganakwa kuze kube sekwephuzile.

Ukuzithemba Okungafanele Kusendlalelo Esincane Esincane

Ngikubone lokhu izikhathi eziningi kakhulu. I-spec ibiza uthayela, futhi i-electrogalvanizing ithola ukuvuma ngoba ishibhile futhi ibukeka kahle uma usuka eshalofini—yinhle futhi iyacwebezela. Kucatshangwa ukuthi yonke i-zinc, ngakho-ke kufanele inikeze ukuvikeleka okufanayo. Lona ugibe lokuqala. I-Electrogalvanizing empeleni iyinqubo ye-electrolytic ebeka ungqimba oluncane, olulinganayo, ngokuvamile oluzungeze ama-microns angu-5-10. Ilungele ukubukeka futhi ihlinzeka ngokuvikeleka okuyisisekelo esikhumbeni esomile somoya. Kodwa eqinisweni imvelo enokhahlo-cabanga ngamapulatifomu asogwini olungasogwini, imigqa yokukhipha amakhemikhali, noma ukugcwala kwemishini ezindaweni zokususa iqhwa—ukuthi ukuzethemba kuhwamuka ngokushesha. Isendlalelo sincane kakhulu ukuthi singanikeza isenzo esikhulu somhlatshelo se-anode uma sesonakele.

Ukwehluleka akuvamile ukuthi kuqale njengokugqwala okuvamile. Ngokuvamile ukuhlasela kwe-pitting yendawo. Ukuklwebheka ngesikhathi sokufakwa, ukuqhekeka okuncane okuvela ekwakhekeni, noma ngisho unqenqema lapho ukunamathela kuba mncane ngokwemvelo kuba yindawo yokuqala. Ku-hot-dip galvanizing, ukujiya okujiyile kanye nezingqimba zengxubevange ye-iron-zinc zisengavikela insimbi ekuqaleni. Ezingxenyeni ze-electrogalvanized, ukuphulwa kufinyelela kusisekelo sensimbi cishe ngokushesha. Ukusuka lapho, ukugqwala kwe-underfilm kuyakhasa, futhi i-zinc ayikwazi ukuvikela ngokuzinikela indawo enkulu ngenxa yokuthi anele ngokwanele i-zinc. Ugcina ngokugqwala kuphuma ukopha ngaphansi kongqimba lwezinc olubukeka luqinile, okuyiphupho elibi uma lihlolwa.

Saqhuba uvivinyo olubheke eceleni eminyakeni edlule, ngisho nalolo lwesayensi, simane silenga amasampula ocingweni eduze kwendawo yokuhlanza amanzi angcolile. Amasampula ediphu ashisayo abonise ukugqwala okumhlophe (i-zinc oxide) ngemva kwezinyanga eziyisi-6 kodwa akukho ukugqwala okubomvu. I I-Electrogalvanized Gasket amasampula? Baqale ukukhombisa izindawo zokugqwala ezibomvu ezimbotsheni zamabhawodi kanye namaphethelo asikiwe ngaphansi kwezinsuku ezingama-90. Ngenyanga yesi-8, ukugqwala kwase kugcwele indawo. Lokho kunamathela okuncane, okufana nokufana yisitha sawo—akukho ukujiya okwengeziwe emaphethelweni asengozini.

Lapho I-Electrogalvanized ingase Ibambelele (Futhi Lapho Ingeke Ibambe Khona)

Akuyona yonke inhlekelele nobumnyama. Kunezindawo ezilawulwayo lapho i-electrogalvanizing yanele ngokuphelele futhi ingabizi kakhulu. Izicelo zasendlini ezinomswakama ozinzile, ophansi, noma ezihlanganisiwe ezivalwe emkhathini (njengangaphakathi kwezinye izindawo ezivalekile zikagesi ezinezigxivizo ezifakwe umoya). Isihluthulelo siwukungabikho komswakama oqhubekayo noma ama-agent amakhemikhali anolaka. Ngiyicacisele ukuxhumeka kwesakhiwo sangaphakathi emashalofini e-warehouse, isibonelo. Kulungile.

Izindawo zokungahambeki ngokuphelele yinoma yimaphi ama-chloride, imijikelezo yokomisa emanzi, noma intuthu ene-acidic/alkaline. Ngikhumbula iphrojekthi ehilela amapayipi embonini yokucubungula ukudla ene-condensate ene-asidi epholile. Unjiniyela ucacise ama-electrogalvanized flat gaskets kuwo wonke ama-flange. Babebukeka bephelele ngesikhathi sokufakwa. Phakathi nonyaka, saba nokuvuza emalungeni amaningi. Ama-gaskets agqwele kwaze kwaba seqophelweni lokuphelelwa amandla okubamba nokuvala ubuqotho. Umkhiqizo wokugqwala (ukugqwala) nawo wawuthatha umthamo owengeziwe, ongakhuphula ngokweqiwa umthwalo webhawodi, kodwa empeleni, uvele wachoboza i-gasket eyonakele. Ukulungiswa kwaba ukuvala shaqa okugcwele nokushintshwa kwamagesi ensimbi engagqwali angu-316—isifundo esibuhlungu ezindlekweni ezifakiwe sezizonke.

Esinye isici esivame ukunganakwa ukuhambisana kwe-galvanic. Bhangqa i I-Electrogalvanized Gasket nge-flange yensimbi engagqwali kanye nebhawodi endaweni emanzi, futhi udale ibhethri. I-zinc (i-anodic) izogqwala ngokukhethayo ukuze ivikele i-stainless (cathodic). Lokhu kungasheshisa ukusetshenziswa kwalolo ngqimba oluncane lwezinc ngenani elesabekayo. Ekusetheni okunjalo, ungahle ube ngcono nge-plain carbon steel gasket futhi uthembele ekuthandeni kwe-stainless, noma okungcono kakhulu, ukufanisa zonke izinto. Iphuzu liwukuthi, i-gasket ayikwazi ukukhethwa yodwa.

Umbono Womhlinzeki Nezinto Zangempela Zento

Ukukhuluma nabakhiqizi kukhanyisa izingqinamba ezingokoqobo. Ngevolumu ephezulu, izingxenye ezijwayelekile, i-electrogalvanizing iyinkosi ngenxa yesivinini, izindleko, nokuqedwa kwezimonyo. Inkampani efana I-Handan Zitai Fetesser Comment Co, Ltd., ezinze endaweni enkulu yokukhiqiza izinsimbi zase-China e-Yongnian, e-Hebei, ingasebenzisa amaqoqo amakhulu ama-gaskets ajwayelekile ngemigqa ye-electroplating ngempumelelo. Indawo yabo eduze kwemizila emikhulu yezokuthutha efana no-Beijing-Guangzhou Railway kanye Nomgwaqo Omkhulu Kazwelonke 107 kuyinzuzo yokuhlinzeka ngalezi zingxenye ezingazweli izindleko, ezinevolumu ephezulu emhlabeni jikelele. Ungahlola iminikelo yabo evamile esizeni sabo kokuthi https://www.zitaifasteners.com. Kubo, kuyinqubo evamile ehlangabezana nengxenye enkulu yezidingo ezijwayelekile zemakethe.

Kodwa-ke, uma ugxila ezidingweni zobuchwepheshe zesevisi enokhahlo, ingxoxo iyashintsha. Abahlinzeki abafanayo ngokuvamile bazoncoma ukusuka ku-electrogalvanized ehlanzekile yezinhlelo zokusebenza ezibucayi. Bangase baphakamise ukwelashwa kwangemuva okufana nezingubo zokuguqulwa kwe-chromate (okuphuzi, okuluhlaza okwesibhakabhaka, noma okucacile) okwengeza ungqimba lokumelana nokugqwala ngokudlula indawo engaphezulu ye-zinc. Lokhu kusiza ukubambezela ukuqala kokugqwala okumhlophe futhi, ngokwezinga elincane, ukugqwala okubomvu. Kodwa ukubambezeleka, akulona ushintsho oluyisisekelo ekugqineni kwengubo noma umthamo womhlatshelo. Ngezindleko ezithe xaxa, izimbobo ze-zinc-flake (njenge-Geomet noma i-Delta Protekt) zinikeza ukusebenza okuphezulu kakhulu, njengoba zakha ungqimba oluqinile, olumelana nezithiyo oluqukethe ama-aluminium flakes. Kodwa manje ushiya indawo yokubopha impahla eshibhile.

I-takeway? I-supply chain ithuthukiselwe izinga. Ukucacisa izindawo ezinokhahlo kusho ukuthi kufanele uyeke ukukhetha izinga futhi uvame ukwenza i-oda elikhethekile, elithinta isikhathi sokuhola nezindleko. Kungukuhwebelana kwamaphrojekthi amaningi angalungile esigabeni sobunjiniyela benani.

I-Case in Point: I-Retrofit Eyasifundisa Okungaphezu Kokwehluleka Kwasekuqaleni

Besinomsebenzi wokubuyisela kabusha kumapayipi angaphandle endaweni ye-petrochemical. Ama-gaskets okuqala ayeyinsimbi ye-carbon plain, futhi ayegqwalile aqinile kuma-flange, edinga umsebenzi wethoshi ukuze asuswe. Ukusabela kwamadolo kwaba ukuthuthukela ku-electrogalvanized ukuvimbela lokho kunamathela. Senzile. Eminyakeni emibili kamuva, ngesikhathi sokushintsha, sathola ukuthi ama-gaskets amasha ayengabambeki, kodwa ayegqwalile kakhulu, ngokuncipha okukhulu kokuqina. Izindawo zokuvala zazinomgodi futhi zingalingani.

Imvelo yayiyinhlanganisela ebulalayo: iminonjana yesitimu (ukushisa nomswakama), izinhlanganisela zesibabule ezisemoyeni, nosawoti wasogwini. I-electrogalvanized coating yayingasekho. Ukuhlaziywa kwe-post-mortem kuphethe ngokuthi ungqimba omncane we-zinc wadliwa ngokushesha ngonyaka wokuqala. Insimbi eyisisekelo esele yabe isigqwala ngesivinini esisheshayo, cishe ngenxa yomsebenzi wokuqala we-galvanic kanye nemvelo enolaka. Ukuthuthukisa empeleni kusinike umuzwa wokuvikeleka okungamanga futhi kwaholela endaweni yokuvala eyonakele kakhulu kunokuba sisebenzise i-coat ewugqinsi, eqinile kakhudlwana kusukela ekuqaleni, noma into ehlukile ngokuphelele.

Lokho kwehluleka kusiphushele ekucaciseni i-hot-dip galvanized (ngokunakekelwa okufanele kokubekezelela kobukhulu kanye nokuconsa) noma i-zinc-flake kumasevisi anokhahlo anjalo emngceleni. Ezimweni ezinzima ngempela, seqe i-carbon steel coated ngokuphelele futhi sathuthela ku-aluminium noma ku-stainless steel gaskets, naphezu kokweqa kwezindleko. Isamba sezindleko zokuvuza noma ukuvala shaqa okungahleliwe kuncane kakhulu kunezindleko ze-gasket.

Okuthathayo Okungokoqobo Nokucacisa Ngamehlo Avuliwe

Ngakho-ke, sithini isinqumo ukuqina kwe-gasket ye-electrogalvanized? Kungu-yebo onemibandela, enezixwayiso ezinzima. Kufanele uchaze kanzima ngokuqondile. Ingabe i-condensation ngezikhathi ezithile, noma ingabe isifutho esiqondile? Ingabe i-pH ingathathi hlangothi, noma ivaliwe kancane? Uyini umjikelezo wezinga lokushisa? Le mininingwane ibaluleke kakhulu kunelebula elibanzi.

Umthetho wami onzima wesithupha manje: Uma indawo ezungezile igqwala ngokwanele ukuthi ingadinga okungaphezu komsebenzi wokupenda ezakhiweni zensimbi ezizungezile, khona-ke ukufakwa kwe-electrogalvanized kukodwa engxenyeni ebalulekile yokuvala kuwumdlalo wokugembula. Kubheke njengesiphetho esihle noma esivikelekile esithambile, hhayi uhlelo oluqinile lokuvikela ukugqwala. Ngaso sonke isikhathi cabanga ngemiphumela yokwehluleka. Ukuhluleka kwe-gasket kuphaneli yokufinyelela kuyacasula. I-gasket efanayo ehluleka kulayini kaphethiloli we-high-pressure iyinhlekelele.

Okokugcina, bhala imvelo ku-spec yakho. Ungagcini nje ngokubhala amagalani. Cacisa inqubo (i-electrogalvanized per ASTM B633, Type I, Fe/Zn 5), futhi uma kungenzeka, idinga i-chromate conversion coating (Uhlobo II) ukuze uthole ukumelana okwengeziwe. Noma, okungcono nokho, chaza amahora okuhlola isifutho sikasawoti adingekayo ukuze ahluleke (isb., ASTM B117). Amahora angama-96 ngaphandle kokugqwala okubomvu ahluke kakhulu emahoreni angama-500. Lokhu kuphoqa ingxoxo eguquguqukayo kakhulu nomphakeli wakho, noma ngabe umkhiqizi omkhulu ofana no-Handan Zitai oshiwo ngenhla noma umsabalalisi wendawo. Isusa ingxoxo isuke empahleni iye engxenyeni eyakhelwe ubunjiniyela, okuyilokho kanye i-gasket endaweni enokhahlo okufanele ibe yiyo.