I-Dacromet Coating Bolts-Umhlahlandlela Ophelele we-Zinc-Aluminium Flake Coating Technology for Fasteners 

1.Iyini i-Dacromet?

I-Dacromet yathuthukiswa ngasekupheleni kwawo-1960 yinkampani yaseMelika i-Diamond Shamrock (kamuva eyaba yi-MCI, kwase kuba yi-NDS / Doerken MKS). Yakhelwe ekuqaleni ukuze kubhekwane nokwehluleka kwe-hydrogen embrittlement ezixhunyweni zezimoto ezinamandla aphezulu, kusukela ngaleso sikhathi isiphenduke indinganiso eyaziwayo emhlabeni wonke yokulwa nokugqwala, ecaciswe ngaphansi kwe-ISO 10683, ASTM B695, kanye namazinga ahlukahlukene kazwelonke (GB/T 18684 e-China).

Izimpawu Ezisemqoka

Inqubo engeyona eye-electrolytic: I-Dacromet isetshenziswa nge-dip-spin coating, hhayi i-electroplating. Awekho amandla kagesi adlula ezingxenyeni, aqede ukukhiqizwa kwe-hydrogen kanye nengozi ehlobene ne-embrittlement.

I-Flake-based coating: Ukumboza kuqukethe ama-zinc amancane nama-aluminium flakes (ugqinsi oluphakathi kuka-20–60 nm) agqagqene njengama-shingles ophahleni, okwakha umgoqo ominyene, onezingqimba eziningi.

Mncane futhi umfaniswano: Ugqinsi olujwayelekile lokumboza luyi-4–10 µm - mncane ngokwanele ukuze kulondolozwe ukulingana kwentambo nokubekezelela kobukhulu, ngokungafani nokucwebezela kwediphu eshisayo.

Ukuthobela imvelo: I-Dacromet yesimanje ayinayo i-hexavalent chromium (Cr⁶⁺), ihlangabezana neziqondiso ze-RoHS, REACH, kanye ne-ELV (End-of-Life Vehicle).

Ukumelana nokushisa: I-inorganic coating imelana namazinga okushisa aqhubekayo afinyelela ku-250°C, okuyenza ifaneleke indawo yenjini kanye nezinsimbi zokubopha eziseduze kwe-exhaust.

2.Izinzuzo Eziyinhloko

Ukumelana nokugqwala okuphezulu: Amahora angu-500–1,200 esifutho sikasawoti esimaphakathi (NSS) nge-ISO 9227 ngayinye — izikhathi ezi-5–10 ezingcono kunezicwecwe ezivamile ze-zinc (amahora angu-96–240).

I-Zero hydrogen embrittlement: Inqubo engeyona i-electrolytic iqeda ukumuncwa kwe-hydrogen, okwenza i-Dacromet ibe i-coat ethandwayo yezinsimbi eziqinile (iBanga lesi-8.8-12.9) lapho i-electroplating ivinjelwe noma ivinjelwe.

Ukufana okuhle kwe-coating: I-Dip-spin coating imboza ingaphakathi, izimbobo ezingaboni, namajiyometri ayinkimbinkimbi ngokufanayo kune-electroplating noma i-hot-dip galvanizing. Ama-thread crests kanye nezimpande zithola ukumbozwa okufanayo.

I-coating encane, ukubekezelelana okulondoloziwe: Ku-4–10 µm, i-Dacromet ayiphazamisi ukusebenzisana kwentambo noma ubudlelwano be-torque-tension. Akudingeki ukuphinda uthephe amantongomane, ngokungafani nezibophelelo ezifakwe emanzini ashisayo.

Ukumelana nokushisa: I-inorganic Ceramic-like coating igcina izakhiwo zayo zokuvikela emazingeni okushisa afinyelela ku-250°C (ngokuqhubekayo) kanye no-300°C (isikhashana), okwedlula kude izimbotshana zemvelo.

Ukuthobela imvelo: Imahhala ye-Cr⁶⁺, ithobelana ne-RoHS, REACH, kanye neziqondiso ze-ELV. Uketshezi olunamanzi olusekelwe emanzini lunokukhishwa kwe-VOC okuphansi uma kuqhathaniswa nezinye izindlela ezisekelwe ku-solvent.

Ukunamathela okuhle nokumelana nokugqoka: Ukufakwa kwe-flake okuhlanganiswe ngamakhemikhali kumelana nokuqhekeka, ukuklwejwa, kanye nokuphatha umonakalo kangcono kunokucwecwa okujwayelekile.

3. Ukuqhathanisa Nezinye Izingubo

Ithebula elingezansi liqhathanisa i-Dacromet nezinye izindlela ezimbili ezivame kakhulu zokuhlanganisa izinsimbi - i-electroplated zinc plating kanye ne-hot-dip galvanizing:

Isifutho sikasawoti ngokwe-ISO 9227 NSS. Ingozi ye-hydrogen embrittlement isebenza kuzixhumi ezifakwe ugesi zeBanga 10.9 nangaphezulu.

4. Izinhlelo zokusebenza

Ezezimoto: Izingxenye zenjini, izinsimbi ze-chassis, amasistimu amabhuleki, izingxenye ezimisiwe, nezingxenyekazi zekhompuyutha zangaphansi. I-Dacromet icaciswa ama-OEM amakhulu (i-VW, i-Toyota, i-GM, i-Ford) kumabhawodi anamandla aphezulu (iBanga lesi-8.8–10.9) lapho ukufakwa kwe-hydrogen kufanele kugwenywe.

Ezokwakha nengqalasizinda: Izixhumi zesakhiwo sensimbi, ihadiwe yebhuloho, izinsimbi zokubopha emhubheni, nezibopho zikakhonkolo zeformwork ezivezwe endaweni enomswakama negqwalile.

Ugesi namandla: Amabhawodi wombhoshongo wokudlulisa, ihadiwe ye-switchgear, nezixhumi zokubopha zikagesi ezidinga ukuqina kwangaphandle kwesikhathi eside.

Isitimela nezokuthutha: Izibophelelo zesitoko ezigingqikayo, izingxenye zethrekhi, nezingxenyekazi zekhompuyutha zemishini yokubonisa izimpawu ezivezwe kusawoti wokususa iqhwa nokugqwala komkhathi.

Osolwandle nasogwini: I-hardware yedokhi neyechweba, izibophelelo zeplathifomu yasogwini, nezinto zokusebenza ezisemoyeni eligcwele usawoti (kungezwe ngejazi langaphezulu elivalekayo ukuze kuvikeleke kakhulu).

Amandla omoya: Amabhawodi e-Tower flange, ihadiwe ye-nacelle, namabhawodi okuhanjelwa ayisisekelo adinga amashumi eminyaka okuvikela ukugqwala okungenakulungiswa.

Izinto zikagesi ne-HVAC: Izibophelelo zokushintsha ukushisa, izingxenye zesithando somlilo, nezingxenyekazi zekhompyutha zeyunithi yangaphandle lapho ukumelana nokushisa nokuvikela ukugqwala kuyadingeka kokubili.

Isifinyezo

I-Dacromet iwubuchwepheshe obufakazelwe, obusebenza kahle bokulwa nokugqwala kwezinsimbi zensimbi. Isakhiwo sayo esiyingqayizivele se-zinc-aluminium flake, esisetshenziswa ngenqubo ye-non-electrolytic dip-spin, iletha amahora angama-500-1,200 okumelana nesifutho sikasawoti ngaphandle kokuhoxiswa kwe-hydrogen - okuyenza ibe uqweqwe olukhethwayo lwamabhawodi anamandla emikhakheni yezimoto, ezokwakha, nezamandla. Ngefilimu yayo encane, efanayo, ukuthobela imvelo, kanye nokumelana nokushisa okuhle kakhulu, i-Dacromet ivala igebe phakathi kokucwenga kwe-zinc engabizi kakhulu kanye nensimbi engabizi ebizayo, enikeza ibhalansi efanele yokusebenza, ukwethembeka, kanye nezindleko zokufuna ukufaka isicelo sokubopha.