Hauv teb ntawmtus ntsias hlauCov kev kho deg, nrog rau cov khaub thuas txias thiab kub-dip galvanizing, muaj ib qho kev txhim kho corrosion-resistant coating tshuab hu liDacromet KhoCov. Keeb kwm los ntawm txawv teb chaws, dacromet yog tus txheej txheem tshiab txheej txheem rau cov txheej txheem bolts. Nws cov ntsev tsuag tsuag ua kom ntev tshaj ntawm electrogalvanizing-tshwj xeeb kho dacromet bolts tuaj yeem tiv thaiv ntau dua 1,} Kev ntsuas ntsev, kev ua haujlwm tsis muaj hluav taws xob.
Thaum ntxov cov ntaub ntawv hauv tsev thaum ntxov, ntau lub installation ib txwm muaj bolts nrog cov kev tiv taus corrosion zoo heev. Hluav Taws Xob Hluav Taws Xob Feem Ntau Ua Tsis Tau Raws Li Cov Qauv Tsim, Thaum Hot-Dip Galvanized Bolts, txom nyem los ntawm cov xov tsis txaus vim yog cov txheej txheem kev txwv. Dacromet kev kho mob txig qhov sib txawv no. Dacromet bolts muab 10 zaug lub corrosion tsis kam ntawmElectrogalvanized BoltsCov. Tsis zoo li kub-dip galvanizing, lawv tsis ua kev puas tsuaj rau kev ua kom haum rau kev sib tsoo), tshem tawm hydrogen embrittlement txaus ntshai, thiab tiv thaiv ntau kub. Raws li qhov tshwm sim, feem ntau bolts siv nyob rau hauv tsheb thiab maus taus niaj hnub no yuav tsum tau kho dacromet.
Lub dacromet cov txheej txheem kab rov qab mus rau xyoo 1930 hauv Tebchaws Europe. Thaum lub sijhawm, huab cua txias thiab cov pa roj carbon monoxide (piv txwv li, tsuag tsuag) sai sai Cov kws tshawb fawb tau tsim cov khoom siv ua dej ua ke uas siv zinc plaub ya ri, txhuas flakes, thiab chromic acid. Tom qab tau thov rau cov hlau chaw thiab sintered ntawm 300-320 degree, cov khoom siv no ib tug tuab inorganic passivation zaj duab xis ntawm cov hlau nto. Tom qab ntawd tau los ntawm Asmeskas tub rog raws li kev tiv thaiv-qib tawm tsam kev txhim kho corrosion, nws tau siv txij li thaum. Tom qab xyoo ntawm kev txhim kho, nws muaj cov pej xeem thiab yog siv dav hauv kev lag luam xws li hluav taws xob thiab kev tsim kho.
Cov txheej txheem DACROMET kho yog ncaj tab sis hauv paus sib txawv ntawm electrogalvanizing (tsis muaj electrolytic dip-txheej thiab Sintering cov txheej txheem):Pajyog raus rau hauv lossis txau nrog cov slurry uas muaj zinc thiab txhuas plinc thiab tam sim no muaj cov khaub ncaws hnav siab, sib xyaw ua ke. Tsis zoo li qub zinc Txheej txheej, dacromet txheej pom cov khoom tshwj xeeb, suav nrog cov tshuaj ntsuab oxidation thiab ntsev txau. Tom qab kev kho mob, tsis muaj polishing, kev ua kom tawg, kev poob siab, ua kom muaj kev xaiv ib puag ncig ntawm cov neeg hauv ib puag ncig ntawm cov neeg siv hluav taws xob rau kev xa tawm.
Dacromet Bolts muab cov txiaj ntsig tseem ceeb:
Piv rau electrogalvanizing (nrog nyias 5-15μm zinc txheej mus rau kev puas tsuaj los ntawm kev sib txhuam), dacromet's kev sib txhuam tsis tau thaum lub sijhawm thauj thiab kev teeb tsa, tiv thaiv cov rog thiab cov xeb ntawd tom qab.
Piv rau kub-dip galvanizing (nrog tuab 50-80μμμ md yog clog txiv ntseej yam tsis tau sau lawv, kom ua ke ncaj thiab meej.
