Iibholiti ezishushu-diphu: zizinzileyo kushishino? 

Uva ‘i-hot-dip galvanized’ kwaye ucinga ‘ayinakutshatyalaliswa, izinzileyo, ihambo-yokugqiba.’ Kodwa ngaba lilo lonke elo bali lisemhlabeni? Emva kokuba ndifumene kwaye ndichaze oku iminyaka, ndiwubonile umsantsa phakathi kwesithembiso sekhathalogu kunye nenyani kwisihambisi esingcangcazelayo okanye kwiyadi yonxweme. Umbuzo wokuzinza awukho nje malunga ne-zinc; imalunga nomjikelo wobomi uphela, ukusuka kwitanki yokuchola ukuya ekutshintshweni kwayo ekugqibeleni. Masiyinqumle iglosi yentengiso.

Ikhaka leZinc: Ngakumbi kunengubo nje

Okokuqala, makhe sicace: i-hot-dip galvanizing (i-HDG) ibonelela ngokhuseleko olugqwesileyo lokutya ngokusebenzisa ibhondi ye-metallurgical kunye nesenzo se-anode yombingelelo. Le yincwadi yokufunda. Kodwa ukuqina kwangempela kuxhomekeke kakhulu kumgangatho wentsimbi yesiseko kunye nolawulo lwenkqubo. Ndibone iibholiti ezivela kwibhetshi ethembekileyo zisilela kwangaphambi kwexesha ngenxa yokuba intsimbi engaphantsi yayinobumdaka obubangela ukunamathiswa komgangatho ongalinganiyo. I-zinc yenze umsebenzi wayo, kodwa yayilwa idabi ukusuka kwisiseko esibuthathaka. Asikokuntywilisela nje ibholithi; imalunga nento oyitshoyo.

Emva koko kukho inkqubo ngokwayo. Inkqubo efanelekileyo ye-HDG ibandakanya ukulungiswa okungqongqo komphezulu-ukunciphisa, ukucoca, ukuguquguquka. Ukuba i-asidi ye-pickling ayilawulwa ngokuchanekileyo, ufumana imingcipheko ye-hydrogen embrittlement, ngakumbi kwiibholiti eziphezulu. Ndikhumbula iprojekthi apho sasinothotho lweebholithi zebakala lesi-8.8 phantsi koxinzelelo. Oyena nobangela? Ukubhaka okungonelanga emva kokufaka igalvanizing ukugxotha i-hydrogen. Ibango lozinzo liyawa ukuba icandelo liyasilela ngokwesakhiwo phambi kokuba umhlwa ude ufumane ithuba.

Kwaye ukugqiba akufani njengengubo yokuthambisa. Ufumana ukuthontsiza, imitsi, kunye nepateni yespangle. Kwezinye izicelo zesakhiwo, oko kulungile. Kodwa kwiindibano ezichanekileyo apho unyamezelo lwe-dimensional luqinile, ukutyeba okongezelelekileyo kwimisonto kunokuba liphupha elibi. Uhlala ufuna ukuphinda ucofe i-nut okanye usebenzise i-oversize tapping, eyongeza iindleko kunye nobunzima. Ukhetho 'oluzinzileyo' aluzinzisi kangako ukuba ludala inkunkuma kwaye lusebenza kwakhona ezantsi.

Umlinganiselo weLedger yokusiNgqongileyo

Xa abantu bethetha ngokuzinzileyo, bahlala becinga nje ubomi obude. Kodwa iindleko zokusingqongileyo zokuvelisa yinxalenye enkulu ye-equation. Inkqubo yeHDG ifuna amandla kakhulu—ifudumeza iiketile ezinkulu ze-zinc ukuya kuma-450°C. I-zinc ngokwayo ingumthombo. Ngelixa iphinda isetyenziswe, imveliso yokuqala inomkhondo wayo. Isigaba sokukhetha sisebenzisa i-hydrochloric okanye i-sulfuric acid, ukudala inkunkuma efuna ukungathathi hlangothi ngokucophelela kunye nokulahlwa. Uvavanyo oluzinzileyo ngokwenene kufuneka luphendule ngoku.

Yithelekise neplating yoomatshini okanye entsha, ebhityileyo-ifilimu engaphiliyo yokwaleka. Basenokuba nomthwalo osezantsi wokusingqongileyo, kodwa ukuba bafuna ukutshintshwa kabini rhoqo, ujonge imijikelo emininzi yokuvelisa, uthutho olungakumbi, umsebenzi wofakelo olongezelelekileyo. Kuseto olunzima lwemizi-mveliso okanye lweziseko ezingundoqo-cinga iinqaba zothumelo lwamandla, iindlela zokugada uhola wendlela-ithuba elide lokubuyisela i-HDG lihlala liphumelela uvavanyo lobomi. Lurhwebo: impembelelo yenkqubo yangaphambili ngokuchasene nokuqina kwexesha elide.

Ndasebenza nomenzi weziko lokucoca amanzi amdaka. Baqale bathathela ingqalelo iziqhoboshi zentsimbi ezingenasici kwiipaneli ezithile zokufikelela, balking kumandla enkqubo ye-HDG. Kodwa ucazululo lweendleko zomjikelo wobomi lubonise ukuba kwimeko-bume eyingozi kakhulu, nokuba i-316 ingenastainless inokufuna ukuhoywa, ngelixa i-HDG etyebileyo, esetyenziswe kakuhle kwibholiti yentsimbi yekhabhoni inokuthi ikhuphe ipaneli ngokwayo. Isigqibo sajika sabuyela kwi-HDG. Ukhetho oluzinzileyo alusoloko lunencwadana yemveliso ekhangeleka iluhlaza.

INyaniso yoLungiselelo kunye neKhonkco loNikezo

Nantsi into engakuxeleliyo amaphepha akhethekileyo: ukufumana izinto ezingaguquguqukiyo, iziqhoboshi ezikumgangatho ophezulu zeHDG kwisikali asiyonto encinci. Ubunzima bokugquma bunokwahluka ibhetshi ukuya kwibhetshi. Ndiye ndahambisa apho unxibelelwano lomsonto lwalungahambelani ngenxa yokuba igalvanizing yakhelwe ngaphezulu kwibhetshi enye. Udinga umboneleli onolawulo olungqongqo lwenkqubo, hayi nje umgca wokuphola.

Kulapho ubambiswano kunye nomvelisi ofakwe kwi-ecosystem yemizi-mveliso ekhulileyo yenza umahluko. Thatha inkampani efana I-Sunnian Zitai Festener Fishaner Comment Com.. Ngokusekwe eYongnian, eHandan-intliziyo yemveliso yaseTshayina ekhawulezayo-bajikelezwe lulonke ikhonkco lokubonelela, ukusuka kumzobo wocingo ukuya kwingubo yokugqibela. Indawo yabo kufutshane neendlela ezinkulu zothutho (https //wwww.ziitasteners.com amanqaku ukusondela kwi-Beijing-Guangzhou Railway kunye ne-expressways) ayisiyondawo yokuthengisa; kuthetha ukukhutshwa okuphantsi kolungiselelo lwezinto ezikrwada kunye nempahla egqityiweyo. Xa umboneleli wakho ephakathi kweyona nxalenye inkulu yemveliso ekumgangatho ophezulu eTshayina, banokufikelela kumgangatho wentsimbi ongaguqukiyo kunye namaqabane akhethekileyo asebenza nawo iminyaka. Oko kuhambelana yintsika efihliweyo yokuzinza-ukunciphisa umngcipheko weebhetshi eziphosakeleyo eziba yinkunkuma.

Iindlela zokungaphumeleli: Yintoni eyona nto ingahambi kakuhle

Uzinzo lukwamalunga nokuphepha ukungaphumeleli. Iibholiti ze-HDG azirhaleli nje ngokulinganayo. Amanqaku okusilela okuqhelekileyo akwimisonto esikiweyo, apho i-coat inokuba mncinci, kwaye iphantsi komthwalo ozinzileyo apho uxinzelelo lwe-corrosion cracking lunokuqalisa. Ndibone iibholiti kwindawo yokwandiswa kwebhulorho apho intshukumo ethe gqolo encinci yayinxiba i-zinc ekuhlaleni, ikhokelela kwimingxuma ekhawulezileyo. Ibhawuthi eseleyo ibijongeka intsha kraca.

Omnye umba ofihliweyo yi-galvanic corrosion. Ukudibanisa ibholidi yensimbi ye-HDG enentsimbi engaphantsi (efana ne-aluminium) kwindawo emanzi inokunyusa ukukhawuleza kwe-aluminiyam. Ngakolunye uhlangothi, ukuyidibanisa kwintsimbi ehloniphekileyo njengobhedu kunokuncama i-zinc coating ngesantya esikhawulezayo. Kufuneka ucinge ngayo yonke indibano. Ukuchaza i-HDG ngaphandle kokuqwalasela izixhobo zokukhwelana yimpazamo ye-rookie yakudala ebeka esichengeni ukuqina okuhlawulelayo.

Emva koko kukho ubushushu. Iingubo ze-HDG zilungile kwiimeko ezininzi ezisezantsi, kodwa kwizicelo eziqhubekayo zokushisa okuphezulu (ngokuqhubekayo ngaphezu kwe-200 ° C), i-zinc inokusasazeka kwintsimbi, yenze i-brittle layer kwaye ilahlekelwe yixabiso layo lokukhusela. Kwiprojekthi yepaneli yokufikelela kwibhoyila, kwafuneka sitshintshele kwi-coating ye-zinc-nickel edibeneyo. Yayisisifundo sokuba umgangatho we-HDG unemida, kwaye ukuwusebenzisa ngobumfama abubo ubunjineli obuzinzileyo.

Isigwebo: Ewe ofanelekileyo, onamehlo abukhali avuliweyo

Ke, ngaba iibholiti ezishushu zediphu zizinzileyo kushishino? Ukuthatha kwam ngu-ewe ofanelekileyo, kodwa kuphela xa usetyenziswa ngokuqonda okunzulu kunye nokuchaneka. Ziyisisombululo esomeleleyo, esiqinisekisiweyo soluhlu olukhulu lwemizi-mveliso ngokubanzi, ulwakhiwo, kunye nezicelo zeziseko zophuhliso apho uxhathiso lwe-corrosion yexesha elide kunye nokugcinwa okuncinci kuyinjongo. Ukuzinza kwabo kukhanya kwinqanaba lokusetyenziswa.

Nangona kunjalo, azikho inkcazo yendalo yonke, engenangqondo. Ibango lozinzo lixhomekeke kwingcaciso eyiyo (ibakala, ubukhulu bokwambathisa ukuya kumgangatho), ulawulo olungqongqo lomgangatho ngexesha lokwenziwa, kunye nofakelo oluchanekileyo kunye nokubhanqa nezinye izinto. Ifuna ukubuza umthengisi wakho imibuzo enzima malunga nenkqubo yabo, umthombo wabo wentsimbi, kunye neeprothokholi zabo zovavanyo.

Ekugqibeleni, i-fastener eyona nto igcinakeleyo yinto efanelekileyo-injongo, eyenziwe ngenkunkuma elawulwayo, kwaye ihlala ngokuchanekileyo nje ngokuba isakhiwo sibambene kunye-akukho ngaphezulu, akukho ngaphantsi. Kwizicelo ezingenakubalwa, iHDG ibetha olo phawu. Kodwa ukucinga ukuba ihlala iyimpendulo apho thina, njengeshishini, sinokuthi sonqene. Sisixhobo, esihle kakhulu, kodwa hayi umlingo. Uzinzo lwangempela luvela kubuchwephesha obusemva kokukhethwa kunye nokusetyenziswa kwayo.