I-Dacromet Coating Bolts-IsiKhokelo esiBanzi seZinc-Aluminiyam yeTekhnoloji yoKutyabeka ngeFlake yeeFasteners 

1.Yintoni iDacromet?

I-Dacromet yaphuhliswa ngasekupheleni kweminyaka yee-1960 yinkampani yaseMelika i-Diamond Shamrock (kamva i-MCI, emva koko i-NDS / i-Doerken MKS). Idalwe ekuqaleni ukujongana nokungaphumeleli kwe-hydrogen embrittlement kwi-fasteners yemoto ephezulu, ukususela ngoko iye yaba ngumgangatho owaziwayo kwihlabathi jikelele wokulwa nokubola, ochazwe phantsi kwe-ISO 10683, ASTM B695, kunye nemigangatho eyahlukeneyo yesizwe (GB/T 18684 e-China).

Iimpawu eziphambili

Inkqubo engeyiyo eye-electrolytic: I-Dacromet isetyenziswe nge-dip-spin coating, kungekhona i-electroplating. Akukho msinga wombane udlula kwiindawo, ususa ukuveliswa kwe-hydrogen kunye nomngcipheko we-embrittlement ehambelana nayo.

I-Flake-based Coating: I-coating iqukethe i-zinc microscopic kunye ne-aluminium flakes (20-60 nm ubukhulu) eziwelana njengama-shingles ophahleni, ukudala umqobo oxineneyo, onamanqwanqwa amaninzi.

Ibhityile kwaye iyunifomu: Ubungqingqwa obuqhelekileyo bokugquma buyi-4–10 µm - bubhityile ngokwaneleyo ukugcina umsonto ufanelekile kunye nokunyamezelwa kwe-dimensional, ngokungafaniyo ne-galvanizing yediphu eshinyeneyo.

Iyahambelana nendalo: I-Dacromet yanamhlanje ayinayo i-hexavalent chromium (Cr⁶⁺), idibana ne-RoHS, i-REACH, kunye ne-ELV (i-End-of-Life Vehicle) imiyalelo.

Ukumelana nobushushu: I-inorganic coating imelana nobushushu benkonzo eqhubekayo ukuya kuma-250 ° C, iyenza ilungele indawo ye-injini kunye ne-exhaust-fasteners ezikufutshane.

2.Izinto eziluncedo ezingundoqo

Uxhathiso oluphezulu lokutya: Iiyure ezingama-500-1,200 zokutshiza ityuwa engathathi hlangothi (NSS) nge-ISO 9227 - amaxesha angama-5-10 angcono kune-zinc plating yesiqhelo (96-240 hrs).

Ukungabikho kwe-hydrogen embrittlement: Inkqubo engeyiyo i-electrolytic iphelisa i-hydrogen absorption, eyenza i-Dacromet ibe yinto ekhethiweyo yokugqoka i-fasteners ephezulu (iBakala 8.8-12.9) apho i-electroplating inqatshelwe okanye ivinjelwe.

Ukufana okugqwesileyo kokwaleka: Idiphu-spin yokwambathisa igquma imingxuma engaphakathi, imingxuma engaboniyo, kunye neejiyometri ezintsonkothileyo ngokufanayo kune-electroplating okanye i-hot-dip galvanizing. Iingcambu zemisonto kunye neengcambu zifumana ukhuseleko oluhambelanayo.

Ukwaleka okucekethekileyo, ukunyamezela okugciniweyo: Kwi-4-10 µm, i-Dacromet ayiphazamisi ukubandakanya intambo okanye ubudlelwane be-torque-tension. Akukho kuphinda kucofa amandongomane kuyafuneka, ngokungafaniyo neziqhoboshi ezishushu zediphu.

Ukumelana nobushushu: I-inorganic ceramic-like coating igcina iimpawu zayo zokukhusela kwiqondo lokushisa ukuya kwi-250 ° C (eqhubekayo) kunye ne-300 ° C (ixesha elifutshane), idlula kakhulu iingubo eziphilayo.

Ukuthobela indalo esingqongileyo: Isimahla kwi-Cr⁶⁺, ithobela i-RoHS, i-REACH, kunye nezikhokelo ze-ELV. Ulwelo lokugquma olusekwe emanzini lune-VOC ekhutshwayo ephantsi xa kuthelekiswa nezinye iindlela ezisekelwe kwi-solvent.

Ukubambelela kakuhle kunye nokumelana nokunxiba: Isigqubuthelo seflake esibotshelelwe ngokwekhemikhali sixhathisa ukuqhekeka, ukukrwela, kunye nokuphatha umonakalo ongcono kunokwabiwa kwesiqhelo.

3. Ukuthelekisa nezinye iiCoatings

Itheyibhile engezantsi ithelekisa i-Dacromet kunye nezona ndlela zimbini zixhaphakileyo zokugquma i-fastener-i-electroplated zinc plating kunye ne-hot-dip galvanizing:

Isitshizi setyuwa ngokwe-ISO 9227 NSS. Umngcipheko we-Hydrogen embrittlement usebenza kwiifasteners ze-electroplated zeBanga le-10.9 nangaphezulu.

4. Usetyenziso

Iimoto: Izinto ze-injini, iziqhoboshi ze-chassis, iinkqubo zebrake, iindawo zokunqunyanyiswa, kunye nehardware yangaphantsi. I-Dacromet ichazwe yi-OEMs enkulu (i-VW, i-Toyota, i-GM, i-Ford) kwi-bolts yamandla aphezulu (iBakala 8.8-10.9) apho i-hydrogen embrittlement kufuneka igwenywe.

Ulwakhiwo & neziseko: Uqhagamshelo lwesakhiwo sentsimbi, izixhobo zebhulorho, iziqhoboshi zetonela, kunye nezibophelelo ze-formwork zekhonkrithi ezivezwe kwindawo efumileyo neyonakalisayo.

Umbane & namandla: Iibholiti zetower yothumelo, izixhobo zokutshintsha umbane, kunye neziqhoboshi ezivalekileyo zombane ezifuna ukomelela kwangaphandle ixesha elide.

Isiporo kunye nokuhamba: Izixhobo zokubopha isitokhwe eziqengqelekayo, izinto zomkhondo, kunye nezixhobo zokubonisa izixhobo ezivezwe kwiityuwa ze-icing kunye ne-atmospheric corrosion.

Ezaselwandle kunye nonxweme: Idokhi kunye ne-hardware ye-harbor, iziqhoboshi zeqonga elingaphesheya kolwandle, kunye nezixhobo kwiatmosphere ezinetyuwa (zongezwa ngesambatho se-sealer sokhuseleko oluphezulu).

Amandla omoya: Iibholiti ze-Tower flange, ii-nacelle hardware, kunye neebholiti ze-ankile ezisisiseko ezifuna amashumi eminyaka okhuseleko lokungathotywa kokugqwala.

Izixhobo kunye neHVAC: Izibophelelo zokutshintsha ubushushu, iinxalenye zesithando somlilo, kunye nehardware yeyunithi yangaphandle apho ukuxhathisa ubushushu kunye nokukhuselwa komhlwa zifuneka zombini.

Isishwankathelo

I-Dacromet yitekhnoloji eqinisekisiweyo, ephezulu yokusebenza kwe-anti-corrosion kwi-fasteners yentsimbi. Isakhiwo sayo esiyingqayizivele se-zinc-aluminium flake, esisetyenziswe ngenkqubo ye-non-electrolytic dip-spin, ihambisa i-500-1,200 iiyure zokuxhathisa ityuwa ngaphandle kwe-hydrogen embrittlement - iyenza i-coating yokukhetha iibholiti eziphezulu kumacandelo emoto, ukwakhiwa, kunye namandla. Ngefilimu yayo encinci, efana nefilimu, ukuthotyelwa kokusingqongileyo, kunye nokumelana nobushushu obubalaseleyo, i-Dacromet ivala isithuba phakathi kwe-zinc plating ebiza ixabiso eliphantsi kunye nentsimbi ebiza kakhulu, enikezela ukulungelelaniswa kwentsebenzo, ukuthembeka, kunye neendleko zokufuna izicelo zokuziqinisa.