Galvanizing, Chromate Galvanizing thiab Dichromate Galvanizing yog dab tsi?

Galvanizing yog txheej txheem txheej hlau los yog hlau nrog txheej tiv thaiv zinc los tiv thaiv xeb thiab xeb. Cov zinc muab ib qho kev thaiv ntawm qhov chaw thiab cov khoom, tiv thaiv cov hlau los ntawm kev puas tsuaj rau lub sijhawm. Cov txheej txheem no feem ntau siv rau hauv kev tsim kho thiab kev lag luam tsheb los tiv thaiv hlau los ntawm ib puag ncig kev ntxhov siab thiab hnav thiab tsim kua muag.

Chromate galvanizing, tseem hu ua daj chromate, yog ib hom galvanizing uas siv cov chromate hloov dua siab tshiab txheej tshaj zinc txheej. Cov txheej no txhim kho corrosion kuj ntawm zinc txheej thiab muab ntxiv tiv thaiv xeb thiab lwm yam degradation. Chromate galvanizing feem ntau yog siv rau hauv cov ntawv thov uas cov hlau raug rau cov tshuaj hnyav los yog corrosive ib puag ncig.

Dichromate galvanizing, tseem hu ua hexavalent chromium galvanizing, yog ib hom galvanizing uas siv cov tshuaj lom heev ntawm chromium los txhim kho cov khoom tiv thaiv ntawm zinc txheej. Txawm hais tias dichromate galvanizing muaj txiaj ntsig zoo ntawm kev tiv thaiv xeb thiab xeb, cov txheej txheem no tau poob tawm ntawm kev txaus siab vim nws cov tshuaj lom thiab muaj peev xwm ua rau muaj kev phom sij. Niaj hnub no, ntau qhov kev lag luam tau hloov mus rau kev nyab xeeb thiab ntau dua ib puag ncig-phooj ywg rau kev tiv thaiv hlau.

Zuag qhia tag nrho, galvanizing yog txheej txheem tseem ceeb rau kev tiv thaiv hlau los ntawm xeb thiab lwm yam kev xeb. Los ntawm kev muab cov kev tiv thaiv tiv thaiv cov ntsiab lus, galvanized hlau tuaj yeem tiv taus cov xwm txheej hnyav thiab kav ntev rau ntau xyoo yam tsis tas yuav tsum muaj kev saib xyuas lossis kho qhov tseem ceeb. Txawm hais tias nws yog los ntawm chromate galvanizing lossis lwm cov txheej txheem tiv thaiv, cov txheej txheem no tseem yog ib feem tseem ceeb ntawm ntau qhov kev lag luam thiab kev siv niaj hnub no.