Uma ubuza ukuthi ama-black zinc-plated countersunk cross bolts ahlala isikhathi eside, impendulo emfushane ithi: kuncike ngokuphelele lapho uwasebenzisa khona. Ngibone ama-specs amaningi kakhulu ebiza i-zinc emnyama njengento yokubamba konke ukumelana nokugqwala nobuhle, kuphela ukuze izingxenye zehluleke ngaphambi kwesikhathi endaweni engafanele. I-plating ngokwayo ayisona isixhumanisi esibuthakathaka; kuwukulindela ukuthi kuyisixazululo sendawo yonke.

Kusho Ukuthini I-Black Zinc Empeleni Phansi

Empeleni, i-zinc emnyama ivamise ukusho inqubo yokucwenga i-zinc elandelwa yingubo yokuguqula i-chromate emnyama. Lesi akusona isivimbeli esiwugqinsi, esiqinile esifana ne-hot-dip galvanizing. Kuyingqimba encane yomhlatshelo. Ichromate emnyama inikeza umbala futhi yengeza ungqimba oluncane lokumelana nokugqwala, kodwa umsebenzi wayo oyinhloko ngokuvamile kuwubuhle nje—ukunikeza umfaniswano, isiphetho esimnyama esibukeka njengemboni noma kunciphisa ukubonakaliswa kokukhanya. Isivikelo sangempela sivela ku-zinc engaphansi, ezogqwala ngokuzidela ukuze ivikele i-substrate yensimbi. Ngakho-ke, ukuqina lapha kumayelana nekhono le-zinc lokuzidela kancane kancane.

Ngikhumbula iqoqo lephrojekthi eminyakeni edlule, elalisetshenziswa ezivalekile zikagesi zangaphakathi egumbini leseva elilawulwa yisimo sezulu. Basebenza kahle iminyaka eminingi—bengekho ukugqwala, amakhanda ahlala ehlanzekile. Kodwa leyo imvelo elungile. Lapho wethula umswakama, usawoti, noma imijikelezo yokushisa evamile, indaba iyashintsha. Ukugqoka okumnyama kungafihla izigaba zokuqala zokugqwala okumhlophe (i-zinc oxide), okuyinkinga. Ungase ungaboni ukwehluleka ukuza kuze kube yilapho kuthuthukisiwe.

I-countersunk head design yengeza esinye isendlalelo embuzweni wokuqina. Ukuze uqedele, uvame ukukhanda noma ukunyathela ikhanda, elinganciphisa noma liphule i-plating emaphethelweni. Uma i-plating ingahambisani lapho-futhi kuvame ukuba njalo-leso isiqalo sakho sokugqwala okubomvu. Ngihlole izingxenye lapho ukugqwala kuqale khona ngokuqondile emaphethelweni acijile ekhanda le-countersunk, iphuzu lokuhluleka lakudala elimayelana nejometri kunekhemikhali yokucwenga.

I-Cross Recess: Isici Esifihlekile Sokuqina

Wonke umuntu ugxile ku-plating yangaphandle, kodwa isistimu yokushayela ibalulekile ukuze kusebenze ukuqina. Ikhanda le-Phillips (cross recess), ikakhulukazi kwibhawodi eshisiwe, linamaphuzu okucindezeleka emvelo. Ngesikhathi sokufakwa, uma i-bit yomshayeli ingahlali kahle noma i-torque iphezulu, uzibeka engozini yokuphuma-i-bit eshibilika futhi ikhumule ikhefu. Ibhawodi elihlutshiwe aliqinile noma ngabe kuhle kangakanani ukumelana nokugqwala kwalo. Lokhu kwenza ikhwalithi yokwakheka kwekhefu ibe phambili. Isiphambano esingakhiwanga kahle, esingashoni, noma esingekho maphakathi sizohluleka ngesikhathi sokufakwa, kwenze ibhawudi lingasebenzi.

Lokhu sikufunde kanzima emgqeni wokuhlanganisa sisebenzisa abashayeli abazenzakalelayo. Ukuthunyelwa kwamabhawudi amnyama afakwe ku-zinc, atholakala ngezindleko eziphansi, abenokujula kwekhefu okungahambisani. Abashayeli babelokhu beshibilika, bekhumula amakhanda, bamise nolayini. Ukumelana nokugqwala kwakungabalulekile; amabhawodi ahlulekile esigabeni sokushayela. Kusiphoqe ukuthi sihlole abahlinzeki bempahla hhayi nje ezitifiketini zokucwenga, kodwa ekubekezeleni kwabo okubandayo kanye nokubekezelela imishini ngesikhathi sekhefu. Inkampani efana I-Handan Zitai Fetesser Comment Co, Ltd., esekelwe kuhabhu enkulu yokukhiqiza yase-China, ngokuvamile inobuchwepheshe bamathuluzi wokwakheka kwesici sokushayela esingaguquki, esibaluleke njengokuqeda.

Yingakho kunoma yiluphi uhlelo lokusebenza olubucayi, ngingacacisa idrayivu yokusebenza okuphezulu njenge-Pozidriv noma i-Torx yamakhanda aphikisayo, kodwa lokho akuyona inketho ngaso sonke isikhathi lapho usebenzisana nemiklamo yefa noma izindinganiso ezithile ezidinga isiphambano se-Phillips.

Izindawo Zomhlaba Wangempela: Lapho Zisebenza Khona Futhi Lapho Zingasebenzi

Ake sicacise. Okufakwa endlini, okomile—i-electronics, ifenisha yangaphakathi, ifreyimu ye-drywall ezakhiweni ezilawulwa yisimo sezulu—la mabhawodi ahlala isikhathi eside ngokuphelele. Isiphetho esimnyama siyaphakama, futhi i-zinc inikeza isivikelo esanele kumswakama ozenzakalelayo. Ngizisebenzise kumikhiqizo efana ne-ITW Shakeproof noma ngithole kubahlinzeki abayinqwaba e-Yongnian ngemisebenzi enjalo ngaphandle kwezinkinga.

Indawo empunga ivikelekile ekusetshenzisweni kwangaphandle—njengangaphansi kwezivalo, kuma-soffits, noma ngaphakathi kwezimoto. Lapha, ungase uthole ukujiya, umswakama ngezikhathi ezithile. Ukuqina kuba umsebenzi wesikhathi. Ngibabone eminyakeni engu-2-3 edlule ngaphambi kokubonisa ukugqwala okumhlophe okubalulekile, futhi mhlawumbe 4-5 ngaphambi kokugqwala okubomvu kuvele emaphethelweni. Ihlala isikhathi eside engxenyeni engakhiwe, eshintshwayo, kodwa hhayi ekufakweni unomphela.

Izindawo ezinokhahlo ziyi-cha enzima. Izindawo ezisogwini ezinesifutho sikasawoti, izicelo zomgwaqo ezinosawoti osusa uqweqwe lukasawoti, noma izilungiselelo zezimboni ezinomswakama ophezulu zizodla ngokufakwa kwezinki ezimnyama ezijwayelekile ezinyangeni. I-black coating ingase ibe ne-micropore, isheshise ukugqwala. Kulezi zimo, ukuzibiza ngokuthi ziqinile kuyiphutha. Udinga i-coat esindayo efana ne-mechanical plating, i-hot-dip galvanizing, noma ukushintshela kunsimbi engagqwali.

Ukwehluka Komhlinzeki kanye Nenkinga Yeqoqo Elihle

Ukuqina akukhona nje nge-spec; imayelana nokukhiqiza okungaguquki. Ugqinsi lwesendlalelo se-zinc (kukalwa ngama-microns) kanye nekhwalithi yenqubo yokuguqulwa kwechromate kuyahluka kakhulu kubahlinzeki. Umkhiqizi onedumela elihle uzolandela izindinganiso ezifana ne-ASTM B633 zokucwecwa kwe-zinc, ecacisa ubuncane bokujiya (isb., ama-microns angu-5 okusetshenziswa kwezentengiso kwe-SC2). Izinto eziningi ezishibhile ezivela kwamanye amazwe zeqa ukulawulwa kwenqubo okufanele.

Ungabheka iwebhusayithi yabo, njenge https://www.zitaifasteners.com, ukubona ukuthi bachaza kabanzi ngezinqubo zabo nokulawulwa kwekhwalithi. Umkhiqizi otholakala endaweni enkulu yokukhiqiza efana ne-Yongnian, onokufinyelela kumaketanga ahlanganisiwe wokunikezela, uvame ukuba nokuvumelana okungcono. Ukukhuluma kuka-Handan Zitai ngokuba sengxenyeni enkulu yesisekelo esijwayelekile kuphakamisa ukuthi banengqalasizinda, kodwa kusadingeka uqinisekise izilawuli zabo zolayini wokucwenga. Ngike ngaba nama-bolt afanayo avela ezindaweni ezimbili ezahlukene enza ngendlela ehluke ngokuphelele ekuhlolweni okufanayo kwe-salt spray.

I-takeway? Hlala ucela isitifiketi sokuhlola seqoqo lokucwenga, ikakhulukazi amaphrojekthi angaphandle. Ungacabangi ukuthi i-zinc emnyama isho into efanayo yonke indawo.

Ngakho, Ingabe Zihlala Ziqinile? Isinqumo Esisebenzayo

Kungu-yebo onemibandela. Ngelungelo, isicelo esilawulwayo, black zinc-plated countersunk cross bolts zinikeza ibhalansi enhle yokumelana nokugqwala, ubuhle, kanye nezindleko. Ukuqina kwazo kuyamukeleka. Kodwa azisona isixazululo esilingana konke. I-plating incane futhi inomhlatshelo; ikhefu eliphambanayo lingaba iphuzu elibuthakathaka uma izinga liphansi.

Umthetho wami wesithupha: zisebenzise endlini ngaphandle komcabango wesibili. Ngokusetshenziswa kwangaphandle okuvikelekile, lindela impilo yesevisi mhlawumbe iminyaka emi-3-5, futhi uhlele ukuhlolwa noma ukushintshwa. Kunoma isiphi isicelo esinzima noma esibucayi, cacisa isiphetho esihlukile noma okubalulekile ngokuphelele. Futhi ungalokothi, i-ever sacrifice drive ifaka ikhwalithi ngentengo eshibhile-ibhawudi elihlutshiwe liyibhawodi elihlulekile, kungakhathaliseki ukuthi limbozwe kanjani.

Ekugcineni, ukuqina kuyimpahla yesistimu, hhayi nje into ephathekayo. Kuya ngendawo ezungezile, indlela yokufaka, kanye nekhwalithi yokukhiqiza engaguquki ngemuva kwalelo bhawudi elithile elisesandleni sakho. Ukuqedwa kwe-zinc emnyama kungukuguquguquka okukodwa nje kuleyo equation.